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1.
Horiz. med. (Impresa) ; 24(2): e2560, abr.-jun. 2024. tab, graf
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1569203

ABSTRACT

RESUMEN Objetivo: Describir la cronología, evolución e impacto de la investigación global sobre el dolor crónico posoperatorio. Materiales y métodos: Estudio bibliométrico que utilizó la base de datos Scopus. Se diseñó y validó una búsqueda estructurada que permitió la recolección de metadatos, los cuales se analizaron a través del paquete Bibliometrix del lenguaje de programación R. Se realizó la descripción de las características generales, la evolución y el cálculo de métricas de impacto de la investigación global sobre el dolor crónico postoperatorio. Resultados: Se incluyeron 1496 documentos, con una ventana de tiempo entre 1983 y 2023. El 70,7 % (n = 1059) de la producción total fueron artículos originales, seguido de revisiones (n = 357; 23,8 %). Existió una colaboración internacional del 15,6 %, y, desde 1983, ha existido un crecimiento sostenido de la producción, con un incremento marcado en los últimos 13 años, donde el 2022 fue el año más fecundo (n = 191 documentos publicados). Se identificó que Canadá y Dinamarca lideran el impacto de la investigación global, y cuentan con los autores e instituciones más prolíficas. Sin embargo, Estados Unidos es el país más productivo, ya que lidera una importante colaboración, esencialmente junto a países europeos y latinos. Se encontró que el dolor neuropático, la valoración de factores de riesgo y el manejo del dolor son algunos de los tópicos más frecuentes. En los últimos 10 años, aproximadamente, ha existido un interés persistente en la investigación sobre calidad de vida, predicción, prevención y valoración de factores de riesgo. Últimamente, ha existido especial interés en el estudio del dolor en cirugía toracoscópica videoasistida y construcción de modelos de predicción. Conclusiones: Se reveló un crecimiento sostenido en la investigación global sobre dolor crónico postoperatorio, en los últimos 40 años. Dicho crecimiento ha estado liderado esencialmente por instituciones canadienses y danesas, a pesar de que se ha considerado a Estados Unidos como el país más prolífico. Asimismo, ha existido una transición importante en los tópicos estudiados, se ha pasado del uso de fármacos y determinación de factores de riesgo al estudio de modelos de predicción, sistematización de datos y cirugía videoasistida.


ABSTRACT Objective: To describe the chronology, evolution and impact of global research into chronic postoperative pain. Materials and methods: A bibliometric study was conducted using the Scopus database. A structured search was designed and validated, thereby allowing the collection of metadata, which were analyzed through the Bibliometrix package of the R programming language. The study involved the description of the general characteristics, evolution and calculation of impact metrics of global research into chronic postoperative pain. Results: The study included 1,496 documents, which spanned from 1983 to 2023. Original articles accounted for 70.7 % (n =1,059) of the total output, followed by reviews (n = 357; 23.8 %). There was an international collaboration rate of 15.6 %, and there has been sustained growth in output since 1983, with a sharp increase in the last 13 years, 2022 being the most prolific one (n =191 published documents). It was identified that Canada and Denmark lead the impact of global research and have the most productive authors and institutions. However, the United States is the most prolific country because it leads significant collaboration, mainly with European and Latin American countries. Neuropathic pain, risk factor assessment and pain management were identified as some of the most frequent topics. Over the past approximately 10 years, there has been persistent interest in research on quality of life, prediction, prevention, and risk factor assessment. Recently, there has been interest in studying pain in video-assisted thoracoscopic surgery and developing predictive models. Conclusions: The study revealed sustained growth in global research on chronic postoperative pain over the past 40 years. Such growth has been mainly led by Canadian and Danish institutions, despite the United States being the most prolific country. Moreover, there has been a significant transition in the studied topics, moving from the use of drugs and identification of risk factors to the study of predictive models, data systematization, and video-assisted surgery.

2.
Medisur ; 22(1)feb. 2024.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1558542

ABSTRACT

Fundamento el dolor postoperatorio se considera un dolor con limitaciones de tiempo, a menudo mal controlado. Su manejo representa un gran desafío, ya que la analgesia postoperatoria debe brindar a la madre un control adecuado de este, y a su vez facilitar la atención del bebé. Objetivo evaluar la efectividad de la anestesia subaracnoidea con morfina como tratamiento del dolor postoperatorio en cesárea. Métodos estudio descriptivo y transversal, realizado en el Hospital General Docente Martín Chang Puga, del municipio de Nuevitas, provincia de Camagüey, entre enero de 2021 y diciembre de 2022. La muestra estuvo conformada por 36 pacientes a las cuales se aplicó anestesia subaracnoidea con lidocaína hiperbárica más morfina para la cesárea. Resultados predominó la edad comprendida entre 27-31 años. El 63,9 % de las cesareadas no refirió dolor postoperatorio. Casi la mitad de la población (47,2 %) estudiada presentó efectos secundarios con el uso de la morfina intratecal, principalmente el prurito. El 80,5 % expresó satisfacción con la analgesia postoperatoria. Conclusiones la mayoría de las pacientes encontraron satisfacción con el tratamiento analgésico, a pesar la presencia de efectos adversos, de modo que el uso de morfina intratecal es efectivo en el manejo del dolor poscesárea.


Foundation Postoperative pain is considered time-limited pain, often poorly controlled. Its management represents a great challenge, since postoperative analgesia must provide the mother with adequate control, and at the same time facilitate care for the baby. Objective to evaluate the effectiveness of subarachnoid anesthesia with morphine as a treatment for postoperative pain in cesarean section. Methods descriptive and cross-sectional study carried out at the Martín Chang Puga General Teaching Hospital, in the Nuevitas municipality, Camagüey province, between January 2021 and December 2022. 36 patients to whom subarachnoid anesthesia was applied with Hyperbaric lidocaine plus morphine for cesarean section were considered as the sample. Results the age between 27-31 years predominated. 63.9% of cesarean patients did not report postoperative pain. Almost half of the population (47.2%) studied presented side effects with the use of intrathecal morphine, mainly pruritus. 80.5% expressed satisfaction with postoperative analgesia. Conclusions the majority of patients were satisfied with the analgesic treatment, despite the presence of adverse effects, so that the use of intrathecal morphine is effective in the management of post-cesarean section pain.

3.
Tianjin Medical Journal ; (12): 302-306, 2024.
Article in Chinese | WPRIM | ID: wpr-1021014

ABSTRACT

Objective To observe the effect of ultrasound-guided anterior quadratus lumborum block at lateral supra-arcuate ligament(QLB-LSAL)and transversus abdominis plane block(TAPB)on analgesia and recovery quality after laparoscopic partial hepatectomy(LPH).Methods Fifty-eight patients underwent elective LPH were selected and divided into the quadratus lumborum group or the transversus abdominis group randomly,with 29 patients in each group.The quadratus lumborum group received bilateral QLB-LSAL,and the transversus abdominis group received bilateral subcostal TAPB block before surgery.Both groups received 20 mL of 0.33%ropivacaine on each side.All patients used patient-controlled intravenous analgesia(PCIA)postoperatively.The numeric rating scale(NRS)scores for rest and movement were recorded at 2,4,6,12,24 and 48 hours postoperatively,as well as the Quality of Recovery-15(QoR-15)scores at 1 day preoperatively,1 and 3 days postoperatively.The perioperative anesthetic agent consumption,PCIA pressing frequency,remedial analgesia use in 48 h,postoperative nausea and vomiting(PONV)incidence and time of first out-of-bed mobilization were also recorded.Results Compared with the transversus abdominis group,the quadratus lumborum group had lower movement NRS scores at 2,4,6,12,24 and 48 hours postoperatively,and lower rest NRS scores at 2,4,6,12 and 24 hours postoperatively(P<0.05).The quadratus lumborum group had higher QoR-15 scores at 1 and 3 days postoperatively(P<0.05).Patients in the quadratus lumborum group had reduced perioperative remifentanil and sufentanil consumption,postoperative 48-hour rescue analgesia use,PCIA pressing frequency,PONV incidence and time of first out-of-bed mobilization(P<0.05).Conclusion QLB-LSAL block provides superior analgesic effects and recovery quality compared to TAPB block after LPH.

4.
Article in Chinese | WPRIM | ID: wpr-1024248

ABSTRACT

Objective:To investigate the analgesic effect of ultrasound-guided transversus abdominis plane block versus ultrasound-guided quadratus lumborum block in older adult patients undergoing inguinal hernia repair surgery. Methods:A total of 150 older adult patients who underwent inguinal hernia repair surgery at the Marine Police Corps Hospital of Chinese People's Armed Police Force from April 2019 to May 2022 were included in this study. They were randomly divided into a control group ( n = 75) and a study group ( n = 75) using a random number table method. All patients underwent elective laparoscopic tension-free inguinal hernia repair surgery. Patients in the control group received ultrasound-guided transversus abdominis plane block after inguinal hernia repair surgery, while those in the study group received ultrasound-guided quadratus lumborum block. The changes in Visual Analog Scale (VAS) score and Ramsay score within 48 hours after surgery were compared between the two groups. Inflammatory factors and stress factors including serum tumor necrosis factor alpha, interleukin-6, norepinephrine, and cortisol, were measured at 24 and 48 hours after surgery. The use of analgesics, drug-related adverse reactions, and incidence of nerve block-related complications within 48 hours after surgery were also compared between the two groups. Results:There was no significant difference in Ramsay score between the two groups at 4, 8, 12, 24, and 48 hours after surgery (all P > 0.05). There was no significant difference in VAS score between the two groups at 4 and 8 hours after surgery (both P > 0.05). At 12, 24, and 48 hours after surgery, the VAS score in the study group was (1.36 ± 0.57) points, (2.05 ± 0.56) points, and (1.79 ± 0.55) points, respectively, which were significantly lower than (1.92 ± 0.59) points, (2.68 ± 0.62) points, and (2.36 ± 0.59) points in the control group ( t = 6.65, 7.31, 5.86, all P < 0.001). At 24 and 48 hours after surgery, serum tumor necrosis factor alpha, interleukin-6, norepinephrine, and cortisol levels in the study group [24 hours: (63.89 ± 4.65) ng/L, (156.59 ± 8.62) ng/L, (97.02 ± 6.95) g/L, (36.95 ± 3.26) g/L; 48 hours: (49.66 ± 3.74) ng/L, (131.45 ± 7.73) ng/L, (74.63 ± 5.91) g/L, (30.41 ± 2.96) g/L] were significantly lower than those in the control group [24 hours: (76.42 ± 5.17) ng/L, (189.32 ± 10.41) ng/L, (105.53 ± 7.83) g/L, (45.16 ± 3.74) g/L; 48 hours: (58.15 ± 3.94) ng/L, (162.74 ± 8.49) ng/L, (89.51 ± 6.37) g/L, (36.92 ± 3.31) g/L, t = 10.49-26.38, all P < 0.001]. The proportion of patients who received analgesics within 48 hours after surgery in the study group was 8.00% (6/75), which was significantly lower than 25.33% (19/75) in the control group ( χ2 = 8.11, P = 0.004). The overall incidence of drug-related adverse reactions within 48 hours after surgery in the study group [6.67% (3/75)] was significantly lower than that in the control group [11% (11/75), χ2 = 4.61, P = 0.032]. Conclusion:Compared with ultrasound-guided transversus abdominis plane block, ultrasound-guided quadratus lumborum block better helps alleviate postoperative pain in older adult patients undergoing inguinal hernia repair surgery, inhibits inflammation and stress reactions, reduces the dosage of analgesic drugs, and decreases the incidence of adverse drug reactions.

5.
Journal of Chinese Physician ; (12): 93-97, 2024.
Article in Chinese | WPRIM | ID: wpr-1026068

ABSTRACT

Objective:To explore the effects of different concentrations of ropivacaine ultrasound-guided transverse abdominis plane block on postoperative pain and stress response in patients undergoing laparoscopic sleeve gastrectomy.Methods:A prospective study was conducted on 120 obese patients who underwent laparoscopic sleeve gastrectomy at the Puren Hospital Affiliated to Wuhan University of Science and Technology from July 2020 to July 2022. According to the random number table method, all patients were divided into a control group, a low concentration group, and a high concentration group, with 40 cases in each group. All three groups underwent ultrasound-guided transverse abdominis plane block after general anesthesia induction. The control group was injected with physiological saline, while the low concentration group and high concentration group were injected with 0.25% and 0.50% ropivacaine, respectively. Stress response indicators before and after surgery in three groups [adrenaline (E), cortisol (Cor), free thyroxine (FT4), and C-reactive protein (CRP)], hemodynamic indicators [mean arterial pressure (MAP) and heart rate (HR)], glucose and lipid metabolism indicators [fasting blood glucose (FBG), 2-hour postprandial blood glucose (2-hour PBG), glycated hemoglobin (HbA 1c), total cholesterol (TC), and triglycerides (TG)] and Visual Analog Scale (VAS) score were compared before and after surgery. Results:On the 1st day after surgery, the levels of E, Cor, FT4, CRP, FBG, 2-hour PBG, HbA 1c, TC, and TG in the high concentration group were lower than those in the control group and low concentration group (all P<0.05); 15 minutes after anesthesia and 2 hours after surgery, the MAP and HR of the high concentration group were higher than those of the control group and the low concentration group (all P<0.05); At 6, 12, and 24 hours after surgery, the VAS score of the high concentration group was lower than that of the control group and the low concentration group (all P<0.05); There was no statistically significant difference in the incidence of airway reactions during anesthesia induction among the three groups ( P>0.05). Conclusions:In laparoscopic sleeve gastrectomy, administering 0.50% concentration of ropivacaine ultrasound-guided plane block of the transverse abdominis muscle has a strong postoperative analgesic effect, which can improve E, Cor, FT4, and CRP levels, and is worthy of clinical application.

6.
Article in Chinese | WPRIM | ID: wpr-1028518

ABSTRACT

Objective:To evaluate the efficacy and safety of oliceridine for treatment of moderate to severe pain after surgery with general anesthesia in patients.Methods:The patients with moderate to severe pain (numeric pain rating scale ≥4) after abdominal surgery with general anesthesia from 14 hospitals between July 6, 2021 and November 9, 2021 were included in this study. The patients were assigned to either experiment group or control group using a random number table method. Experiment group received oliceridine, while control group received morphine, and both groups were treated with a loading dose plus patient-controlled analgesia and supplemental doses for 24 h. The primary efficacy endpoint was the drug response rate within 24 h after giving the loading dose. Secondary efficacy endpoints included early (within 1 h after giving the loading dose) drug response rates and use of rescue medication. Safety endpoints encompassed the development of respiratory depression and other adverse reactions during treatment.Results:After randomization, both the full analysis set and safety analysis set comprised 180 cases, with 92 in experiment group and 88 in control group. The per-protocol set included 170 cases, with 86 in experiment group and 84 in control group. There were no statistically significant differences between the two groups in 24-h drug response rates, rescue analgesia rates, respiratory depression, and incidence of other adverse reactions ( P>0.05). The analysis of full analysis set showed that the experiment group had a higher drug response rate at 5-30 min after giving the loading dose compared to control group ( P<0.05). The per-protocol set analysis indicated that experiment group had a higher drug response rate at 5-15 min after giving the loading dose than control group ( P<0.05). Conclusions:When used for treatment of moderate to severe pain after surgery with general anesthesia in patients, oliceridine provides comparable analgesic efficacy to morphine, with a faster onset.

7.
Acta Paul. Enferm. (Online) ; 37: eAPE02305, 2024. tab
Article in Portuguese | LILACS-Express | LILACS, BDENF | ID: biblio-1573501

ABSTRACT

Resumo Objetivo Identificar os efeitos mediadores do medo e ansiedade pré-operatórios sobre a intensidade da dor pós-operatória em pessoas submetidas a cirurgias eletivas até seis meses após cirurgia. Métodos Estudo observacional e longitudinal de análise quantitativa foi realizado com 172 pacientes adultos internados em uma instituição hospitalar e submetidos a cirurgias eletivas. Os instrumentos usados foram: formulário para caracterização de variáveis sociodemográficas, clínicas e cirúrgicas; Escala Hospitalar de Ansiedade e Depressão; Escala de Medos Relacionados a Cirurgia e Escala de Categoria Numérica para dor. As entrevistas foram realizadas no período pré-operatório, 48 horas após a cirurgia e mensalmente até completar seis meses do pós-operatório. Para a análise estatística descritiva das variáveis explanatórias, foram usadas as frequências absoluta e relativa, média, desvio padrão, mediana e os valores mínimo e máximo. A relação entre as variáveis estudadas foi analisada usando as medidas de correlação e dos efeitos mediadores (modelo de equações estruturais; método de máxima verossimilhança). Resultados No período pós-operatório (6 meses), a média de dor variou de 4,86 a 1,19. As médias de ansiedade (7,62) e medo (25,2) relacionados à cirurgia foram calculadas. A análise das variáveis mostrou correlação positiva tanto do medo como da ansiedade pré-operatórios com os níveis de dor mais elevados avaliados em distintos momentos do período pós-operatório. Além disso, a ansiedade pré-operatória exerceu um efeito mediador na relação entre o medo relacionado à cirurgia, manifestado no período pré-operatório, e a dor pós-operatória nas primeiras 48 h após a cirurgia. Conclusão As variáveis psicológicas, medo e ansiedade pré-operatórios, influenciaram a intensidade da dor pós-operatória em pessoas submetidas a cirurgias eletivas. Intervenções de enfermagem voltadas para ansiedade e medo podem ser úteis aos pacientes cirúrgicos.


Resumen Objetivo Identificar los efectos mediadores de la ansiedad y del miedo preoperatorio sobre la intensidad del dolor posoperatorio en personas que realizaron cirugías electivas hasta los seis meses posteriores a la cirugía. Métodos Se realizó un estudio observacional y longitudinal de análisis cuantitativo con 172 pacientes adultos internados en una institución hospitalaria y sometidos a cirugías electivas. Los instrumentos utilizados fueron: formulario para caracterización de variables sociodemográficas, clínicas y quirúrgicas; Escala Hospitalaria de Ansiedad y Depresión; Escala de Miedos Relacionados con Cirugías y Escala de Categoría Numérica del Dolor. Las entrevistas se realizaron en el período preoperatorio, 48 horas después de la cirugía y mensualmente hasta completar seis meses de posoperatorio. Para el análisis estadístico descriptivo de las variables explicativas, se utilizaron las frecuencias absoluta y relativa, promedio, desviación típica, mediana y valores mínimo y máximo. La relación entre las variables estudiadas se analizó utilizando las medidas de correlación y de los efectos mediadores (modelo de ecuaciones estructurales, método de máxima verosimilitud). Resultados En el período posoperatorio (6 meses), el promedio del dolor varió de 4,86 a 1,19. Se calculó el promedio de ansiedad (7,62) y miedo (25,2) relacionado con la cirugía. El análisis de las variables demostró correlación positiva tanto de la ansiedad como del miedo preoperatorio con niveles de dolor más altos evaluados en distintos momentos del período posoperatorio. Además, la ansiedad preoperatoria tuvo un efecto mediador en la relación entre el miedo relacionado con la cirugía (manifestado en el período preoperatorio) y el dolor posoperatorio en las primeras 48 horas después de la cirugía. Conclusión Las variables psicológicas, ansiedad y miedo preoperatorio, influyeron en la intensidad del dolor posoperatorio en personas que realizaron cirugías electivas. Las intervenciones de enfermería orientadas hacia la ansiedad y el miedo pueden ser útiles para pacientes quirúrgicos.


Abstract Objective To identify the mediating effects of preoperative fear and anxiety on postoperative pain intensity in people undergoing elective surgeries up to six months after surgery. Methods This is an observational and longitudinal study with quantitative analysis, carried out with 172 adult patients admitted to a hospital and undergoing elective surgeries. The instruments used were: form for characterizing sociodemographic, clinical and surgical variables; Hospital Anxiety and Depression Scale; Surgical Fear Questionnaire; and Numeric Rating Scale for pain assessment. The interviews were carried out during the preoperative period, 48 hours after surgery and monthly until six months after surgery. For the descriptive statistical analysis of the explanatory variables, the absolute and relative frequencies, mean, standard deviation, median and minimum and maximum values were used. The relationship between the variables studied was analyzed using measures of correlation and mediating effects (structural equation model, maximum likelihood method). Results During the postoperative period (6 months), the mean pain ranged from 4.86 to 1.19. The means for anxiety (7.62) and fear (25.2) related to surgery were calculated. The analysis of variables showed a positive correlation between both preoperative fear and anxiety with the highest pain levels assessed at different moments in the postoperative period. Furthermore, preoperative anxiety exerted a mediating effect on the relationship between fear related to surgery, manifested in the preoperative period, and postoperative pain in the first 48 hours after surgery. Conclusion Psychological variables, such as preoperative fear and anxiety, influenced postoperative pain intensity in people undergoing elective surgeries. Nursing interventions aimed at anxiety and fear may be useful for surgical patients.

8.
Rev. cir. traumatol. buco-maxilo-fac ; 23(3): 19-22, jul.-set. 2023. ilus
Article in Portuguese | BBO, LILACS | ID: biblio-1555753

ABSTRACT

Apesar da evolução da tecnologia minimamente invasiva com procedimentos cirúrgicos extremamente seguros, são recorrentes no período pós-operatório complicações como dor, náusea, vômito, cefaleia, sonolência e depressão respiratória, sendo estes os principais motivos de internações hospitalares prolongadas. A pesquisa da Acupuntura reveste-se portanto de grande interesse, na medida em que poderá traduzir estes conhecimentos milenares, contribuindo para sua aceitação e incorporação no âmbito hospitalar e ambulatorial... (AU)


Despite the evolution of minimally invasive technology with extremely safe surgical procedures, complications such as pain, nausea, vomiting, headache, drowsiness and respiratory depression are recurrent in the postoperative period, being the main reasons for prolonged hospitalizations. A Research in acupuncture is, therefore, of great interest, as it can translate this ancient knowledge, contributing to its acceptance and incorporation in hospital and outpatient settings... (AU)


Apesar de la evolución de la tecnología mínimamente invasiva con procedimientos quirúrgicos extremadamente seguros, complicaciones como dolor, náuseas, vómitos, cefalea, somnolencia y depresión respiratoria son recurrentes en el postoperatorio, siendo los principales motivos de estancia hospitalaria prolongada. Por lo tanto, la investigación en acupuntura es de gran interés, ya que puede traducir este conocimiento antiguo, contribuyendo a su aceptación e incorporación en entornos hospitalarios y ambulatorios.


Subject(s)
Humans , Male , Female , Pain, Postoperative , Acupuncture Therapy , Acupuncture , Drug-Related Side Effects and Adverse Reactions
9.
Rev. colomb. anestesiol ; 51(3)sept. 2023.
Article in English | LILACS-Express | LILACS | ID: biblio-1535696

ABSTRACT

Timely post-operative pain management in elderly patients is critically important. Given their physiological changes and comorbidities, management in this group of patients is different from the rest of the population. Knowledge of potentially inappropriate medications (Beers criteria) is relevant because of the presence of comorbidities in this population. Although acetaminophen continues to be safe, non-steroidal anti-inflammatory agents produce several adverse effects which need to be considered before they are used. On the other hand, opioids continue to be one of the pillars in analgesia, with due consideration of their adverse affects and interactions, and the need for dose adjustments. Adequate postoperative pain management prevents adverse effects and the risk of developing chronic pain.


El manejo oportuno del dolor en la población anciana durante el periodo posoperatorio es de vital importancia. Este grupo de pacientes, dado sus cambios fisiológicos y comorbilidades, requieren un manejo diferente al resto de la población. Es relevante conocer cuáles medicamentos son potencialmente inapropiados para su uso (criterios de Beers) ante las comorbilidades de esta población. Si bien el acetaminofén continúa siendo seguro, los antiinflamatorios no esteroideos causan varios efectos adversos que ameritan consideración antes de su uso; por su parte, los opioides siguen siendo uno de los pilares analgésicos, teniendo en cuenta sus efectos adversos y valorando la necesidad de ajuste de dosis e interacciones. El adecuado manejo del dolor posoperatorio previene desenlaces adversos y el riesgo de cronificación.

10.
Espaç. saúde (Online) ; 24: 1-13, 01 mar. 2023. tab
Article in Portuguese | LILACS | ID: biblio-1512530

ABSTRACT

Avaliar e manejar a dor no período pós-operatório é fundamental, pois a dor aguda, se não ratada, é capaz de alterar diversos sistemas orgânicos. A realidade virtual constitui instrumento promissor de baixo custo para o alívio da dor. Este trabalho objetivou determinar a eficácia da realidade virtual no manejo da dor aguda leve a moderada em pacientes no pós-operatório mediato. Trata-se de um estudo clínico randomizado, realizado em um hospital pediátrico de Curitiba. Os participantes da pesquisa foram randomizados e alocados em dois grupos, submetidos a um vídeo temático relaxante e à realidade virtual. Os dados foram submetidos à análise estatística descritiva e inferencial. A redução da dor proporcionada pela realidade virtual é estatisticamente significativa e superior quando comparada à redução induzida pelo vídeo temático relaxante, podendo otimizar a experiência de hospitalização, com atenção centrada na experiência do paciente, mitigando os efeitos colaterais relacionados ao uso de opioides.


Assessing and managing pain in the post-operative period is essential, as acute pain, if left untreated, can alter several organic systems. Virtual reality is a promising low-cost tool for pain relief. This study aimed to determine the effectiveness of virtual reality in the management of mild to moderate acute pain in patients in the immediate postoperative period. This is a randomized clinical study, carried out in a pediatric hospital in Curitiba. Research participants were randomized and allocated into two groups, and shown a relaxing thematic video and virtual reality. Data were subjected to descriptive and inferential statistical analysis. Pain reduction provided by virtual reality is statistically significant and superior when compared to the reduction induced by the relaxing thematic video, and can optimize the hospitalization experience, with attention focused on the patient's experience, mitigating side effects related to the use of opioids


La evaluación y manejo del dolor en postoperatorio es fundamental. Ya que el dolor agudo, si no se trata, es capaz de alterar varios sistemas. La realidad virtual es un instrumento prometedor de bajo costo para alivio del dolor. Este estudio tuvo como objetivo determinar la efectividad de la realidad virtual en el manejo del dolor agudo en pacientes en postoperatorio inmediato. Se trata de un estudio clínico aleatorizado realizado en un hospital pediátrico de Curitiba. Los sujetos de la investigación fueron aleatorizados y distribuidos en dos grupos, sometidos a un video temático relajante y a la realidad virtual. Los datos fueron sometidos al análisis estadístico descriptivo e inferencial. La reducción del dolor proporcionada por la realidad virtual es estadísticamente significativa y superior en comparación con la reducción inducida por el video temático relajante, que puede optimizar la experiencia de hospitalización, con atención contrada en la experiencia del paciente, mitigando efectos secundarios relacionados con opioides.


Subject(s)
Pain, Postoperative , Nursing Care
11.
Article in Chinese | WPRIM | ID: wpr-994148

ABSTRACT

Objective:To evaluate the effects of low-dose esketamine on remifentanil-induced postoperative hyperalgesia in the patients.Methods:Ninety-six American Society of Anesthesiologist Physical Status classificationⅠ or Ⅱ patients, aged 18-60 yr, with body mass index of 18-30 kg/m 2, scheduled for elective thyroidectomy under general anesthesia, were divided into 3 groups ( n=32 each) using a random number table method: control group (group C), esketamine administered before anesthesia induction group (group K1), and esketamine administered immediately after the end of surgery group (group K2). Esketamine 0.4 mg/kg was intravenously injected in group K1, and the equal volume of normal saline was given instead in C and K2 groups at 5 min before anesthesia induction. Anesthesia was induced by intravenous injection of propofol, remifentanil and rocuronium. Remifentanil was intravenously infused at a rate of 0.3 μg · kg -1·min -1 and 1.5%-2.5% sevoflurane was inhaled for anesthesia maintenance. Esketamine 0.4 mg/kg was intravenously injected in group K2 and the equal volume of normal saline was given instead in C and K1 groups immediately after the end of surgery. The mechanical pain thresholds of surgical incision and forearm of non-dominant hand were measured at 1 day before surgery and 30 min, 6 h, 24 h and 48 h after surgery, and flurbiprofen axetil was intravenously injected for rescue analgesia when the NRS score≥4 or the patient needed sedation. The intensity of pain was estimated using numeric rating scale at 30 min, 6 h, 24 h and 48 h after surgery. The intraoperative consumption of remifentanil, use of vasoactive drugs, recovery time, tracheal extubation time, duration of PACU stay, postoperative rescue analgesia and adverse reactions were recorded. Results:Compared with C group, the mechanical pain threshold around surgical incision and of the forearm of non-dominant hand was significantly increased at 30 min and 6 h after surgery in K1 and K2 groups ( P<0.05). Compared with C and K1 groups, the emergence time, tracheal extubation time, and duration of PACU stay were significantly prolonged, and the incidence of hallucinations and increased glandular secretion was increased in group K2 ( P<0.05). There were no significant differences in the consumption of remifentanil, intraoperative utilization rate of atropine and ephedrine, numeric rating scale scores at each time point after surgery, incidence of postoperative nausea and vomiting, and rate of rescue analgesia among the three groups ( P>0.05). Conclusions:Intravenous injection of small dose of esketamine (0.4 mg/kg) before anesthesia induction and immediately after the end of surgery can reduce postoperative hyperalgesia induced by remifentanil, and administration before anesthesia induction provides better efficacy in the patients.

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Article in Chinese | WPRIM | ID: wpr-994150

ABSTRACT

Objective:To evaluate the role of sphingosine-1-phospho-1 receptor(S1PR1)in the dorsal root ganglion in remifentanil-induced hyperalgesia in rats with incisional pain.Methods:Forty-eight male Sprague-Dawley rats with successful intrathecal and caudal vein catheterization, weighing 260-280 g, aged 2-3 months, were divided into 6 groups ( n= 8 each) using a random number table method: control group (group C), S1PR1 antagonist (FTY720) group (group F), remifentanil group (group R), remifentanil + S1PR1 antagonist (FTY720) group (group R+ F), remifentanil + incisional pain group (group R+ I), and remifentanil + incisional pain + S1PR1 antagonist (FTY720) group (group R+ I+ F). In C group, normal saline 0.1 μg·kg -1·min -1 was intravenously infused for 60 min. In R group, remifentanil 1.0 μg· kg -1·min -1 was infused for 60 min through the caudal vein. In F group, FTY720 3 nmol was intrathecally injected, and 10 min later normal saline 1.0 μg· kg -1·min -1 was infused for 60 min via the caudal vein. In R+ F group, FTY720 3 nmol was intrathecally injected, and 10 min later remifentanil 1.0 μg· kg -1·min -1 was infused for 60 min through the caudal vein. In R+ I group, remifentanil 1.0 μg·kg -1·min -1 was infused for 60 min through the caudal vein while the model of incisional pain was developed. In R+ I+ F group, FTY720 3 nmol was intrathecally injected, 10 min later the incisional pain model was prepared, and remifentanil 1.0 μg·kg -1·min -1 was injected for 60 min through the caudal vein at the same time. The mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL) were measured at 24 h before remifentanil or normal saline infusion (T 0) and 2, 6, 24 and 48 h after stopping remifentanil or normal saline infusion (T 1-4). Rats were sacrificed after the last measurement of pain threshold, and the L 4-6 segments of dorsal root ganglion were taken for determination of the expression of S1PR1, NOD-like receptor thermal protein domain-associated protein 3 (NLRP3), interleukin-1β (IL-1β) and glutamate transporter-1 (GLT-1) protein and mRNA (by Western blot and quantitative polymerase chain reaction). Results:Compared with C group, the MWT was significantly decreased and TWL was shortened at T 1-4, the expression of S1PR1, NLRP3 and IL-1β protein and mRNA in dorsal root ganglion was up-regulated, and the expression of GLT-1 protein and mRNA in dorsal root ganglion was down-regulated in R group ( P<0.05), and no significant change was found in the parameters mentioned above in group F ( P>0.05). Compared with R group, MWT was significantly decreased and TWL was shortened at T 1-4, the expression of S1PR1, NLRP3 and IL-1β protein and mRNA in dorsal root ganglion was up-regulated, and GLT-1 protein and mRNA expression in dorsal root ganglion was down-regulated in R+ I group, and MWT was significantly increased and TWL was prolonged at T 1-4, the expression of S1PR1, NLRP3 and IL-1β protein and mRNA in the dorsal root ganglion was down-regulated, and GLT-1 protein and mRNA expression in the dorsal root ganglion was up-regulated in R+ F group ( P<0.05). Compared with R+ I group, MWT was significantly increased and TWL was prolonged at T 1-4, the expression of S1PR1, NLRP3 and IL-1β protein and mRNA in the dorsal root ganglion was down-regulated, and the expression of GLT-1 protein and mRNA in the dorsal root ganglion was up-regulated in R+ I+ F group( P<0.05). Conclusions:The mechanism by which remifentanil induces hyperalgesia is associated with up-regulation of S1PR1 expression, activation of inflammatory factors, and down-regulation of GLT-1 expression in the rats with incisional pain.

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Article in Chinese | WPRIM | ID: wpr-989638

ABSTRACT

Objective:To analyze the rule of acupoint selection for acupuncture in relieving postoperative pain based on data mining technology.Methods:Articles about acupuncture for postoperative pain were retrieved from CNKI, SinoMed, VIP, Wanfang, PubMed, Embase and Web of Science databases from establishment to June 6, 2022. Excel 2019 and SPSS Modeler 18.0 software were used to establish acupoints database and conduct the data analysis.Results:Totally 308 articles were obtained, involving 317 acupuncture prescriptions and 173 acupoints. Acupoints of bladder meridian, stomach meridian, large intestine meridian and spleen meridian were used frequently. Zusanli (ST 36), Hegu (LI 4) and Neiguan (PC 6) were high-frequency acupoints with a frequency of ≥50 times. Five-shu acupoint was often selected in specific acupoints. The common sites for acupuncture to relieve postoperative pain were abdomen, perianal, lumbar back and knee. Zusanli (ST 36), Neiguan (PC 6) and other acupoints were commonly used for abdominal postoperative pain, and the most commonly used combination was "Zusanli (ST 36)-Neiguan (PC 6)"; Chengshan (BL 57), Changqiang (GV 1) and other acupoints were often used for perianal postoperative pain, and "Chengshan (BL 57)-Changqiang (GV 1)" was highly correlated combination; Shenshu (BL 23) and Huantiao (GB 30) were commonly used for postoperative pain in the lumbar and back region, and acupoints with high correlation were "Ashi acupoint-Huantiao (GB 30)" and "Shenshu (BL 23)-Huantiao (GB 30)"; Xuehai (SP10) and Liangqiu (ST 34) were commonly used for postoperative pain of knee, and their compatibility had a high correlation.Conclusion:Acupuncture therapy for relieving postoperative pain often selects Yang meridians acupoints, and follows the principle of distal-proximal points combination and acupoint selection along meridians, and pays attention to the use of specific acupoints.

14.
Article in Chinese | WPRIM | ID: wpr-989735

ABSTRACT

Objective:To explore the effects of Compound Huangbai Liquid coating combined with Xiaochuang Mixture on wound healing, clinical symptoms and inflammatory response in patients with perianal abscess surgery; To evaluate the clinical efficacy.Methods:Randomized controlled trial. 120 patients after perianal abscess surgery in the hospital from August 2021 to August 2022 were selected as the observation subjects, and they were divided into three groups by the random number table method, with 40 cases in each group. On the basis of routine anti-infection therapy, external TCM application group was given Compound Huangbai Liquid coating, oral TCM administration group was given oral Xiaochuang Mixture, and combined treatment group was treated with Compound Huangbai Liquid coating + Xiaochuang Mixture. The three groups were continuously treated for 15 days. TCM symptoms scores and VAS score were performed on the 2nd day, 7th day and 15th day after surgery, and the levels of IL-6 and TNF-α were detected by ELISA. The wound healing time and carrion shedding time of patients were observed and recorded, and the clinical efficacy was evaluated.Results:The scores of perianal secretions, granulation morphology and surrounding tissue edema and score of VAS decreased in the three groups at 7 days and 15 days after surgery compared with those at 2 days after surgery ( P<0.01), and with the extension of time, the scores of perianal secretions, granulation morphology and surrounding tissue edema and VAS score from the aspects of time-point effect ( F=21.69, 134.65, 19.27, 73.15) and between-group effect ( F=7.99, 98.79, 8.68, 10.71) were declined ( P<0.01), and there was an interaction effect between the decline degree and the treatment method ( F=9.78, 59.52, 11.29, 22.48, P<0.01). The carrion shedding time [(4.63±1.31) d vs. (6.22±2.14) d, (6.17±2.09) d, F=9.16] and healing time [(27.76±3.46) d vs. (30.27±4.11) d, (31.48±4.23) d, F=9.24] were earlier in combined treatment group than those in the external TCM application group and oral TCM administration group ( P<0.01). Serum levels of IL-6 and TNF-α in the three groups at 7 and 15 days after surgery were reduced compared with those at 2 days after surgery ( P<0.01), and with the extension of time, the levels of serum IL-6 and TNF-α in the three groups decreased from the aspects of time-point effect ( F=69.36, 38.76) and between-group effect ( F=21.81, 13.50) ( P<0.01), and there was an interaction effect between the decrease degree and treatment method ( F=28.46, 23.34, P<0.01). The total effective rate was 100.0% (40/40) in combined treatment group, 80.0% (32/40) in external TCM application group and 87.2% (34/39) in oral TCM administration group ( H=8.44, P=0.015). Conclusion:The combination of Compound Huangbai Liquid coating and Xiaochuang Mixture can reduce perianal secretions, improve granulation morphology, alleviate surrounding tissue edema and wound pain, promote wound healing, and reduce inflammatory response of patients with perianal abscess surgery.

15.
Article in Chinese | WPRIM | ID: wpr-991025

ABSTRACT

Objective:To observe the effects of ultrasound guided transversus abdominis plane block (TAPB) on pain, rehabilitation indexes and immune function of postoperative in patients undergoing laparoscopic colorectal cancer surgery.Methods:A total of 100 patients undergoing laparoscopic colorectal cancer surgery admitted to Jiading Branch of Shanghai First People′s Hospital/Jiangqiao Hospital of Jiading District and Shanghai First People′s Hospital from February 2020 to February 2021 were selected as the study subjects, including 43 patients performed epidural block (control group) and 57 patients performed TAPB (observation group). The clinical indicators, vital signs parameters, pain degree, immune function in the two groups were compared.Results:The exhausting time, defecation time, getting out of bed time and hospitalization time in observation group were shorter than those in control group: (2.71 ± 0.54) d vs. (2.99 ± 0.66) d, (3.02 ± 0.49) d vs. (3.49 ± 0.56) d, (3.20 ± 0.89) d vs. (3.85 ± 1.08) d, (6.81 ± 0.98) d vs. (7.71 ± 1.08) d, there were statistical differences ( P<0.05). The diastolic blood pressure, systolic blood pressure and heart rate at pre-anesthesia, immediate incision of the skin, end of the surgery between two groups had no significant differences ( P>0.05). The scores of visual analogue scale at 4, 24, 48 and 72 h after surgery in the observation group were significantly lower than those in the control group ( P<0.05). The levels of CD 3+, CD 4+, CD 4+/CD 8+ and IgM after surgery for 3 d in the observation group were higher than those in the control group: 0.512 ± 0.054 vs. 0.487 ± 0.051, 0.280 ± 0.036 vs. 0.222 ± 0.032, 1.36 ± 0.29 vs. 1.17 ± 0.26, (152.53 ± 34.3) kU/L vs. (138.86 ± 31.18) kU/L, there were statistical differences ( P<0.05). Conclusions:TAPB can effectively reduce the degree of postoperative pain and immunosuppression after laparoscopic colorectal cancer surgery, so as to promote postoperative rehabilitation of patients.

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Article in Chinese | WPRIM | ID: wpr-1024149

ABSTRACT

Methods:To investigate the analgesic efficacy of oxycodone after cesarean section and its effects on pain factors.Methods:A total of 100 pregnant women who underwent cesarean section in Taizhou Hospital of Zhejiang Province from August 2022 to March 2023 were included in this prospective study. They were divided into an observation group ( n = 50) and a control group ( n = 50) using a random number table method. Sufentanil was used for postoperative analgesia in the control group, and oxycodone was used for postoperative pain in the observation group. At 6, 12, 24, and 48 hours after surgery, visual analogue scale (VAS) scores of incision pain and uterine contraction pain and the Ramsay score were compared between the two groups. Before and 48 hours after surgery, pain factors (prostaglandin E 2, substance P, and norepinephrine) were compared between the two groups. At 48 hours after surgery, sleep quality, satisfaction with pain relief, and the incidence of adverse reactions were compared between the two groups. Results:The VAS scores of incision pain in the observation group were lower than those in the control group at the studied time points after surgery [6 hours: (2.35 ± 0.31) points vs. (2.78 ± 0.43) points; 12 hours: (5.08 ± 0.64) points vs. (5.67 ± 0.51) points; 24 hours: (4.76 ± 0.35) points vs. (5.12 ± 0.42) points; 48 hours: (2.18 ± 0.37) points vs. (2.54 ± 0.42) points, t = 5.74, 19.87, 4.66, 4.55, all P < 0.001]. At 6, 12, 24, and 48 hours after surgery, the VAS scores of uterine contraction pain in the observation group were significantly lower than those in the control group at the studied time points after surgery [6 hours: (2.41 ± 0.26) points vs. (2.85 ± 0.32) points; 12 hours: (4.98 ± 0.49) points vs. (5.41 ± 0.65) points; 24 hours: (4.65 ± 0.31) points vs. (4.98 ± 0.28) points; 48 hours: (2.04 ± 0.26) points vs. (2.43 ± 0.30) points, t = 7.55, 3.74, 5.59, 6.95, all P < 0.001]. There was no significant difference in Ramsay score between the two groups at 6, 12, 24, and 48 hours after surgery ( t = 0.44, 0.51, 0.78, 0.42, all P > 0.05). At 48 hours after surgery, prostaglandin E 2, substance P, and norepinephrine levels in the observation group were significantly lower than those in the control group ( t = 14.22, 9.05, 14.74, all P < 0.001). At 48 hours after surgery, The Pittsburgh Sleep Quality Index score in the observation group was significantly higher than that in the control group ( t = 4.64, P < 0.05). The overall satisfaction with postpartum analgesia in the observation group was significantly higher than that in the control group ( χ2 = 4.40, P < 0.05). There was no significant difference in the incidence of adverse reactions between the two groups ( χ2 = 0.33, 1.08, 0.38, 0.33, all P > 0.05). Conclusion:Oxycodone has a better analgesic effect on cesarean sections than sufentanil. Oxycodone can inhibit the release of pain factors and thereby reduce pain.

17.
Journal of Chinese Physician ; (12): 1601-1604, 2023.
Article in Chinese | WPRIM | ID: wpr-1026003

ABSTRACT

Pain caused by surgery is an important clinical issue that seriously affects postoperative rehabilitation and health-related quality of life. Failure to effectively manage postoperative pain not only leads to a decrease in patient quality of life, increases medical expenses, but also has a negative impact on patient recovery. Therefore, it is of great clinical significance to address the challenges of acute postoperative pain management, find effective management strategies, and improve the quality of pain management. This article summarizes the current status of acute postoperative pain management in recent years, including the mechanism of pain occurrence, pain assessment methods, drug and non drug management strategies, and predictive factors for chronic postoperative pain. It also looks forward to future research directions and application prospects.

18.
Journal of Chinese Physician ; (12): 1610-1614, 2023.
Article in Chinese | WPRIM | ID: wpr-1026005

ABSTRACT

Objective:To retrospectively observe the effect of oxycodone on acute postoperative pain in patients undergoing thoracoscopic surgery.Methods:A retrospective analysis was conducted on the clinical data of 404 patients undergoing thoracoscopic thoracic surgery under combined general anesthesia at the Xiangya Hospital, Central South University from April 1, 2020 to September 30, 2021. They were divided into A group ( n=99, oxycodone group) and B group ( n=305, control group) based on whether oxycodone was used during the surgery. The two groups of patients were further matched 1∶1 using the nearest neighbor matching method. We compared the Visual Analogue Scale (VAS) of activity and resting pain and the incidence of moderate to severe pain between two groups of patients 24 hours after surgery, and observed the incidence and severity of pain related adverse reactions such as nausea, vomiting, itching, and dizziness. Resultsl:After matching the propensity scores of the two groups of patients, the balance was good ( SMD<0.20). There was no statistically significant difference between the groups in age, gender, body mass index, American Society of Anesthesiologist (ASA) grade, surgical time, intraoperative bleeding, and the use of antiemetics and analgesics during the perioperative period (all P>0.05). Compared with the control group, patients in the group A had a resting VAS [(2.03±1.61)points vs (1.62±1.31)points, P=0.049], and activity VAS [(4.13±1.72)points vs (3.51±1.79)points, P=0.013] was even lower, and the incidence of moderate to severe pain (VAS≥4) during activity was lower [59.6%(59/99) vs 37.4%(37/99), P=0.003]. There was no statistically significant difference in the incidence of analgesic related adverse reactions between the two groups ( P>0.05). Conclusions:Intravenous injection of oxycodone can effectively alleviate acute pain in patients undergoing thoracoscopic surgery within 24 hours, and reduce the incidence of moderate to severe pain during activity.

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Journal of Chinese Physician ; (12): 1630-1634, 2023.
Article in Chinese | WPRIM | ID: wpr-1026009

ABSTRACT

Objective:To observe the effect of pre injection of three different doses of butorphanol tartrate on postoperative pain in gynecological laparoscopic surgery.Methods:A prospective study was conducted on 172 patients who underwent gynecological laparoscopic surgery under general anesthesia at the First Affiliated Hospital of Dalian Medical University from April to December 2022. According to the random number table method, patients were divided into B1 group, B2 group, and B3 group. These three groups were given 10, 20, and 30 μ g/kg butorphanol tartrate 15 minutes before surgery, respectively. Ramsay sedation score at 10 minutes after patient administration, the pain Numerical Rating Scale (NRS) scores and Bruggrmann Comfort Scale (BCS) for resting and active states at 2, 6, 12, 24, and 48 hours after surgery, hemodynamic parameters at different time points during surgery, postoperative use of adjuvant analgesics and effective number of compressions for patient-controlled intravenous analgesia (PCIA) and the incidence of postoperative adverse reactions were recorded.Resultsl:There was no statistically significant difference in general characteristics among the three groups of patients (all P>0.05). At 10 minutes after administration, there was a statistically significant difference in Ramsay scores between groups B2 and B3 compared to group B1 (all P<0.05). At 12 and 24 hours after surgery, the resting NRS score of B3 group was lower than that of B2 group and B1 group, and B2 group was lower than B1 group (all P<0.05); At 6, 12, and 24 hours after surgery, the NRS scores of postoperative activity in the B2 and B3 groups were lower than those in the B1 group (all P<0.05); At 6 and 12 hours after surgery, the NRS score of the B3 group was lower than that of the B2 group (all P<0.05). At 6 and 24 hours after surgery, there was a statistically significant difference in BCS between groups B2 and B3 compared to group B1 (all P<0.05). There was no statistically significant difference in the hemodynamic parameters at each time point during surgery, the effective number of PCIA compressions within 48 hours after surgery, and the incidence of postoperative adverse reactions among the three groups of patients (all P>0.05). There was a statistically significant difference in the rate of postoperative addition of analgesics among the three groups ( P<0.05). Conclusions:Intravenous injection of 15 minutes before gynecological laparoscopic surgery 30 μg/kg butorphanol tartrate can achieve good analgesic effects with fewer adverse reactions, and can be used as a priority dose for preventive analgesia in gynecological laparoscopic surgery.

20.
Journal of Chinese Physician ; (12): 1640-1643, 2023.
Article in Chinese | WPRIM | ID: wpr-1026011

ABSTRACT

Objective:To explore the effect of diclofenac sodium suppository combined with tramadol sustained-release tablets on postoperative pain relief and recovery in patients with mixed hemorrhoids.Methods:Sixty patients with mixed hemorrhoids who underwent external dissection and internal ligation at the Shenzhen Traditional Chinese Medicine Proctology Hospital from September to October 2023 were selected and randomly divided into A group and AS group using a random number table method, with 30 patients in each group. The group A patients received oral tramadol sustained-release tablets 4 hours after surgery, while the group AS received diclofenac sodium suppositories for anal canal therapy in addition to the group A. Two groups were compared for postoperative pain [Visual Analog Scale (VAS)] and patient comfort [Numerical Rating Scale (NRS)], cumulative tramadol consumption, supplementary rescue pethidine needs, and adverse reactions at 4, 8, 24, and 48 hours.Resultsl:The VAS of the AS group were lower than those of the A group at 4, 8, 24, and 48 hours after surgery. The NRS scores of the group A patients at 4, 8, and 24 hours were significantly better than those of the group AS. The cumulative consumption of tramadol in the AS group at 4, 8, 24, and 48 hours after surgery was significantly lower than that in the A group; The demand rate for postoperative rescue of pethidine in the group A was significantly higher than that in the group AS. The incidence of nausea in the group A was significantly higher than that in the group AS.Conclusions:The combination of postoperative diclofenac sodium suppositories and oral tramadol sustained-release tablets for mixed hemorrhoid surgery has a significant improvement effect on pain. It can reduce the dosage of tramadol, reduce the need for rescue and supplementary analgesia, and have fewer adverse reactions.

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