Analgosedación con propofol y fentanilo en las colonoscopia / Analgosedation with propofol and fentanyl in colonoscopy

RESUMEN Introducción: La comodidad durante la colonoscopia es una condición importante si se quiere que el paciente acepte procedimientos repetidos. Por lo tanto, se necesita de una buena sedación que pudiera combinar la analgesia con amnesia. Objetivo: Describir la utilidad de la analgosedación balanceada con propofol/fentanilo en colonoscopia ambulatoria. Métodos: Se realizó un estudio observacional descriptivo longitudinal prospectivo en pacientes a los que se les realizó colonoscopia de forma ambulatoria en el Hospital General Universitario "Dr. Gustavo Aldereguía Lima" en el período entre enero de 2017 y diciembre de 2018. Resultados: El 34,2 % de los pacientes tenía entre 50 y 59 años, el 62,9 % eran mujeres. El 73,3 % de los pacientes se clasificó como ASA II según el estado físico. Los valores medios de frecuencia cardiaca y tensión arterial media tuvieron una disminución ligera después de aplicada la anestesia y se mantuvieron constantes en el resto de los momentos evaluados. Los valores medios de saturación de oxígeno de la hemoglobina se mantuvieron relativamente constantes en todos los momentos y resultaron algo superiores a la llegada del paciente a recuperación. La calidad de la sedación fue adecuada en 86,2 % de los pacientes. La calidad de la analgesia y la recuperación fue buena en 88,4 % y 96,2 %, respectivamente. Se presentaron complicaciones en el 16,5 % de los pacientes. Conclusiones: La analgosedación con propofol y fentanilo resultó una alternativa anestésica de utilidad en los pacientes a los que se les realizó colonoscopia ambulatoria con gran estabilidad hemodinámica en la serie estudiada.

ABSTRACT Introduction: Comfort during colonoscopy is an important condition if the patient is expected to accept repeated procedures. Therefore, good sedation that could combine analgesia with amnesia is needed. Objective: To describe the usefulness of balanced analgosedation with propofol/fentanyl in outpatient colonoscopy. Methods: A prospective, longitudinal, descriptive and observational study was carried out with patients who received outpatient colonoscopy at Dr. Gustavo Aldereguía Lima General University Hospital in the period between January 2017 and December 2018. Results: 34.2% of the patients were between 50 and 59 years old, while 62.9% were women. 73.3% of patients were classified as ASA II, according to their physical status. The mean values for heart rate and mean arterial blood pressure had a slight decrease after anesthesia was applied and remained constant for the rest of the evaluated times. The mean values of hemoglobin-oxygen saturation remained relatively constant at all the evaluated times and were slightly higher on the patient's arrival to recovery. The quality of sedation was adequate in 86.2% of the patients. The quality of analgesia and recovery was good in 88.4% and 96.2%, respectively. Complications occurred in 16.5% of the patients. Conclusions: Analgosedation with propofol and fentanyl proved to be a useful anesthetic alternative in patients undergoing outpatient colonoscopy, with high hemodynamic stability in the studied series.

Clinical efficacy of ultrasound-guided adductor block with chloroprocaine combined with fentanyl for early rehabilitation training after total knee arthroplasty / 中国基层医药

Objective:To investigate the effects of ultrasound-guided adductor block with chloroprocaine combined with fentanyl on analgesia and early rehabilitation after total knee arthroplasty.Methods:Eighty-eight patients who underwent total knee arthroplasty in Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine between June 2018 and June 2020 were included in this study. They were randomly divided into control and study groups, with 44 patients per group. The control group was subjected to distal adductor block with ropivacaine. The study group received distal adductor block with ropivacaine combined with fentanyl. Before and after distal adductor block, resting pain response was evaluated using the Visual Analogue Scale. The success rate, onset time of block, and duration of block effect were recorded. The quadriceps femoris muscle strength, knee joint range of motion, and Hospital for Special Surgery knee score before and after block were measured. The time spent in stand-to-walk test and 10-meter walking test, and incidence of falls during rehabilitation training as well as drug-related adverse reactions were recorded.Results:There were no significant differences in resting-state and task-state Visual Analogue Scale scores post-block between the two groups ( t = 0.43, 0.46, P = 0.689, 0.644). The onset time of block and duration of block effect in the study group were (5.02 ± 0.94) minutes and (2.64 ± 0.39) minutes, respectively, which were significantly shorter than those in the control group [(7.49 ± 1.12) minutes, (7.08 ± 0.92) minutes, t = 5.73, 13.02, both P < 0.001]. There was no significant difference in block success rate between study and control groups (100.0% vs. 100.0%, χ 2 = 0.00, P = 1.000). The quadriceps femoris muscle strength, knee range of motion, and Hospital for Special Surgery knee score in the study group were (4.68 ± 0.44), (112.57 ± 9.96) o and (70.56 ± 6.84) points, which were superior to those in the control group [(4.19 ± 0.42), (101.30 ± 9.67) o,(62.47 ± 6.16) points, t = 3.42, 4.64, 6.58, all P < 0.001). The time spent in stand-to-walk test and 10-meter walking test were (7.95 ± 1.48) minutes and (4.67 ± 0.63) minutes, respectively, which were significantly shorter than those in the control group [(13.41 ± 2.05) minutes, (6.24 ± 0.77) minutes, t = 8.23, 6.74, both P < 0.001). The incidence of falls in the study group was significantly lower than that in the control group (11.3% vs. 29.5%, χ 2 = 4.47, P = 0.034). There was no significant difference in total incidence of drug-related adverse reactions between the two groups (9.1% vs. 13.6%, χ 2 = 0.45, P = 0.502). Conclusion:Distal adductor block with cloprocaine combined with fentanyl meets the requirement of short-term intensive analgesia after total knee arthroplasty, and achieves sufficient analgesia, maximum retention of motor function, rapid onset, and repaid recovery.

Exploración de la eficacia analgésica de dos parches transdérmicos analgésicos de opioides, buprenorfina y fentanilo, según sus variaciones de dosis en el control del dolor en pacientes paliativos oncológicos / Exploration of the analgesic efficacy of two-transdermal analgesic patches of opioids, buprenorphine and fentanyl, according to their dose variations in pain control in palliative cancer patients

Objetivo: El presente trabajo de investigación tuvo como objetivo explorar la eficacia analgésica mediante la comparación de la respuesta analgésica de los parches transdérmicos (PTD) de buprenorfina y fentanilo en dolor oncológico y patrón de uso. Material y Método: Se obtuvieron los datos y variables desde los registros clínicos de pacientes ingresados a la Unidad de Cuidados Paliativos (UCP) del Instituto Nacional del Cáncer (INC) que estaban bajo tratamiento en mayo del 2017. Se incluyó en este estudio a 78 pacientes con PTD, que representan el 13% de los pacientes en control mensual. De estos, 66 estaban bajo tratamiento con buprenorfina y 8 bajo tratamiento con fentanilo. Resultados: Los resultados mostraron que el PTD de buprenorfina se utiliza más frecuentemente que el de fentanilo. El principal motivo de rotación fue dolor no controlado, seguido por imposibilidad de contar con la administración por vía oral. En pacientes con mayores intensidades de dolor somático o visceral se indicó fentanilo y en aquellos con componente neuropático se prefirió el uso de buprenorfina. PTD de fentanilo fue indicado en dosis mayores que buprenorfina, incluso al comparar sus dosis equianalgésicas, siendo la variación de dosis alta para ambos parches: aumentó en promedio 257%. Se logró una mejor respuesta analgésica con buprenorfina, con una variación de intensidad de escala numérica verbal (ENV) de 2,94 y 1,88 puntos de promedio para buprenorfina y fentanilo, respectivamente. Adicionalmente, se presentó mayor reacción local dérmica con fentanilo. Conclusiones: Se evidenció diferencias en patrón de uso y, a diferencia de lo esperado, se obtuvo una mejor eficacia analgésica con buprenorfina. Datos que deben ser corroborados en estudios con mayor número de pacientes bajo tratamiento con fentanilo.

Objective: This study aims to explore analgesic efficacy comparisons of buprenorphine and fentanyl transdermal patches (TDP) in cancer pain and it's usage pattern. Material and Method: Data and variables were collected from patient's clinical reports who were admitted in the National Cancer Institute's (NCI) Palliative Care Unit (PCU) and were under treatment with TDP in May 2017. 78 TDP patients were studied and represented 13% of the monthly control patients in the PCU. Of these, 66 were under buprenorphine treatment and 8 under fentanyl treatment. Results: The results showed that buprenorphine TDP is more frequently used than fentanyl TDP, and the main reason for exchange between them was uncontrolled pain, followed by oral administration impossibility. Fentanyl TDP was indicated in patients with higher somatic or visceral pain intensities and Buprenorphine TDP was preferred in patients with neuropathic pain. Fentanyl TDP was indicated in higher doses than buprenorphine, even when comparing its equianalgesic doses, the dose variation was high for both patches throughout the treatment: it increased on average by 257%. A better analgesic response was achieved with buprenorphine, with a variation of intensity of the Verbal Numerical Scale (VNS) of 2.94 and 1.88 average points, for buprenorphine and fentanyl respectively. Additionally, there was a higher local dermal reaction with fentanyl TDP. Conclusions: Differences in usage patterns were evidenced and, unlike what was expected, better analgesic efficacy was obtained with buprenorphine TDP. This data should be corroborated in receiving fentanyl treatment.

Effect of CYP3A4*1G gene polymorphism on postoperative analgesia with fentanyl-related drugs: a Meta-analysis / 肿瘤研究与临床

Objective:To systematically review the relationship between CYP3A4*1G gene polymorphism and the analgesic effect of fentanyl-related drugs.Methods:The related literature about the effect of gene polymorphism on analgesic effect of fentanyl-related drugs published at home and abroad was searched in PubMed, Embase, Cochrane Library, CNKI, Wanfang and China Biomedical Literature databases from database establishment to August 2019. According to the inclusion and exclusion criteria, two researchers screened the literature independently, extracted the data and evaluated the methodological quality. Data analysis was performed by Review Manager 5.1 software.Results:Six literature was enrolled with 1 050 cases, including 543 cases of wild-type homozygote (CC), 437 cases of heterozygote (CG) and 70 cases of mutant homozygote (GG). The results showed that there was no significant difference in pain score between the three groups in a pairwise comparison at 24 hours after operation (all P > 0.05), but the consumption of fentanyl-related drugs in GG group was lower than that in CC group and CG group, and the differences were statistically significant [GG group vs. CC group: standardized mean difference (SMD) = -0.78, 95% CI -1.03- -0.52, P<0.01; GG group vs. CG group: SMD = -0.61, 95% CI -0.87- -0.35, P<0.01]. Conclusions:CYP3A4*1G gene polymorphism can affect the postoperative analgesia effect of fentanyl-related drugs. With the same analgesic effect, the consumption of fentanyl-related drugs in GG patients is reduced.

Effects of intrathecal morphine and fentanyl on IFN-γ levels in hippocampus and plasma of rats with incisional pain / 中华麻醉学杂志

Objective:To evaluate the effects of intrathecal morphine and fentanyl on interferon (IFN)-γ levels in hippocampus and plasma of rats with incisional pain.Methods:Ninety-six healthy male Sprague-Dawley rats in which intrathecal catheters were successfully inserted, weighing 180-220 g, aged 6-8 weeks, were divided into 4 groups ( n=24 each) using a random number table method: normal saline group (group NS), incisional pain group (group P), morphine and fentanyl group (group MF) and morphine and fentanyl with incisional pain group (group MFP). Incisional pain model was established in group P and group MFP.At 20 min before the model was established, a 50 μl mixture of morphine 5 μg/kg and fentanyl 0.25 μg/kg was intrathecally injected in group MF and group MFP, while normal saline 50 μl was injected intrathecally in group NS and group P. At 24 h before establishment of the model (T 0) and at 1, 6, 24, 48 and 72 h after establishment of the model (T 1-5), 6 mice were randomly selected from each group for determination of the mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL). The animals were sacrificed and hippocampal tissues and blood samples from the inferior vena cava were collected for determination of IFN-γ levels in hippocampal tissues and plasma (by enzyme-linked immunosorbent assay). Results:Compared with group NS, MWT was significantly decreased and TWL was shortened at T 1-5, and IFN-γ concentration in plasma was decreased at T 2, 3 and T 5 in group P, MWT was increased and TWL was prolonged at T 1-3 in group MF, MWT was decreased and TWL was shortened at T 1-3 in group MFP, and IFN-γ concentration in plasma was decreased at T 2 in MF and MFP groups ( P<0.05). Compared with group P, MWT was increased, TWL was prolonged at T 1-5, and IFN-γ concentration in plasma was increased at T 2, 3 and T 5 in MF and MFP groups ( P<0.05). Compared with group MF, MWT was decreased and TWL was shortened at T 1-4, and IFN-γ concentration in plasma was increased at T 2 and T 3 in MFP ( P<0.05). There was no significant difference in IFN-γ concentration at each time point among the 4 groups ( P>0.05). Conclusion:Intrathecal morphine and fentanyl can increase plasma IFN-γ concentration, and improve peripheral immunosuppression.

Analgesic efficacy of dexmedetomidine combined with fentanyl citrate injection in patients undergoing laparoscopic appendectomy and its effects on inflammatory factor level / 中国基层医药

Objective:To investigate the analgesic efficacy of dexmedetomidine combined with fentanyl citrate injection in patients undergoing laparoscopic appendectomy and its effects on inflammatory factor level.Methods:200 patients with appendicitis who underwent laparoscopic appendectomy in Hangzhou Dajiangdong Hospital from April 2017 to March 2019 were included in this study. They were randomly assigned to receive postoperative anesthesia either with fentanyl citrate injection alone (control group, n = 100) or fentanyl citrate injection combined with dexmedetomidine (observation group, n = 100). At different time points after surgery, Visual Analogue Scale (VAS) score was compared between the two groups. Inflammatory factors C-reactive protein, interleukin-6, and tumor necrosis factor-α levels before and after surgery, and the incidence of adverse reactions were compared between the two groups. Results:At 6, 12, 24 and 48 hours after surgery, VAS score in the observation group was significantly lower than that in the control group ( t = 4.671, 9.594, 10.877 and 12.358, all P < 0.001). Before surgery, there were significant differences in C-reactive protein, interleukin-6, and tumor necrosis factor-α levels between the two groups ( t = 0.224, 0.188, 0.421, all P > 0.05). At 24 hours after surgery, C-reactive protein, interleukin-6, and tumor necrosis factor-α levels in each group were significantly increased compared with before surgery, and C-reactive protein, interleukin-6, and tumor necrosis factor-α levels in the observation group were significantly lower than those in the control group ( t = 2.496, 2.209, 3.165, all P < 0.05). There was no significant difference in the incidence of adverse reactions between the control and observation groups [8.00% (8/100) vs. 10.00% (10/100), χ2 = 0.244, P > 0.05]. Conclusion:Dexmedetomidine combined with fentanyl citrate injection exhibits good and anesthesic and analgesic effects during laparoscopic appendectomy, helps inhibit the expression of inflammatory factors, reduces the level of inflammatory factors, leads to less adverse reactions, and is highly safe.

Effectiveness of Fentanyl Citrate Patch for Respiratory Distress in Lung Metastasis of Urinary Tract Cancer: a Case Report / 医薬品情報学

Objective: Among the opioids used for treating dyspnea in cancer patients, the evidence for clinical use of fentanyl is not adequate. We report a case that suggested that fentanyl citrate patch improved dyspnea caused by lung metastasis of ureteral cancer.Case: An 86-year-old female was scheduled to start opioids for dyspnea caused by exacerbation of lung metastasis from ureteral cancer. Morphine hydrochloride was not chosen due to renal dysfunction, and oxycodone hydrochloride extended-release tablet was initiated. However, one day after starting medication, the patient refused to take the tablet because of vomiting. Given the difficulties in using morphine hydrochloride and oxycodone hydrochloride extended-release tablet, fentanyl citrate patch 0.5 mg/day was started for the purpose of improving dyspnea. The dose was eventually increased to 1.0 mg/day. Dyspnea improved and she was discharged.Conclusion: This case suggested the possibility that use of fentanyl citrate patch may be effective for dyspnea. Fentanyl citrate patch may provide one option when other drugs such as morphine hydrochloride and oxycodone hydrochloride cannot be used. However, since this is a report of a single case, further verification is required to clarify the effectiveness of fentanyl citrate patch for dyspnea.

The Use of Intravenous Fentanyl for the Palliation of Refractory Dyspnea in an End-stage Heart Failure Patient with Renal Insufficiency

Introduction: We report a case of dyspnea in the patient with end-stage heart failure with renal insufficiency, which was refractory and was successfully controlled with intravenous fentanyl. Case: The patient was a 76-year-old man with dilated cardiomyopathy who repeatedly had been in and out of the hospital. He was admitted to the hospital because of heart failure exacerbation and treated with all available heart failure therapies, but his dyspnea was refractory. We implemented the team-based palliative care intervention and used intravenous fentanyl as a substitute for morphine due to renal insufficiency. His dyspnea was relieved in dose-dependent without heart failure recovery. Conclusion: In this case, we used intravenous fentanyl to relieve dyspnea in patients with end-stage heart failure. Under careful observation, fentanyl may be used as an alternative drug to relieve dyspnea in patients with end-stage heart failure.

Fentanyl Patch in Reducing Intractable Pain in Patients with Amyotrophic Lateral Sclerosis: A Case Report

Abstract: We report a case of intractable pain in a patient with amyotrophic lateral sclerosis (ALS) that was successfully managed by administering a fentanyl transdermal patch. Case: A 75-year-old man was diagnosed with ALS in 2013 after he became aware of difficulty in walking and systemic pain since 2010. In 2019, he underwent gastrostomy and tracheostomy, and intractable generalized pain necessitated the administration of morphine hydrochloride six times a day; however, it could not provide adequate pain relief. Later, morphine was replaced with a fentanyl patch under a very strict safe-monitored setting and the pain became bearable. Discussion: Although high-level evidence is lacking, pain experts have reported the effectiveness of morphine for intractable pain in patients with ALS. Frequent short-acting morphine dosing is often burdensome due to the complexity of its administration and it also causes end-of-dose pain. A fentanyl patch may possibly improve these drawbacks.

Experiencia en sedoanalgesia vinculada a procedimientos en un departamento de emergencia pediátrica / Experience in procedural sedation and analgesia in a pediatrics emergency unit / Experiência em sedação e analgesia ligada a procedimentos em um departamento de emergência pediátrica

Resumen: Introducción: la realización de procedimientos dolorosos es cada vez más frecuente en el área de urgencias pediátricas. El control del dolor, mitigar el temor y la ansiedad es una pieza clave en la atención del paciente pediátrico y una de las prioridades del médico emergencista. Objetivo: describir la experiencia en sedoanalgesia con ketamina y fentanilo como único fármaco o asociados a otros para procedimientos dolorosos en el Departamento de Emergencia Pediátrica (DEP) del Centro Hospitalario Pereira Rossell (CHPR). Material y método: estudio descriptivo, retrospectivo. Período: enero de 2011 a julio de 2016. Población: todos los pacientes que recibieron sedoanalgesia con ketamina o fentanilo (solos o asociado a otros fármacos) para realización de procedimientos dolorosos en el DEP-CHPR. Base de datos: historias clínicas. Se midió la eficacia mediante el éxito del procedimiento y la seguridad por la presencia de efectos adversos vinculados a la misma. Resultados: n=352, menores de 15 años; 96 recibieron ketamina y 256 recibieron fentanilo. Media de edad: 7 años, sexo masculino: 245. Dosis media de ketamina 1 mg/kg. Dosis media de fentanilo 1 ɤ/kg. Principales indicaciones de sedoanalgesia: procedimientos ortopédicos (264), toracocentesis (62). Procedimiento con éxito: 352 pacientes. Monitorización cardiovascular y saturometría durante el procedimiento: 100%. Efectos adversos: seis (no requiriendo maniobras de soporte vital avanzado). Ningún paciente cambió su destino final. Conclusiones: la utilización de sedoanalgesia resultó eficaz y segura realizada por el pediatra emergencista capacitado en el manejo farmacológico y de soporte vital avanzado. La monitorización del procedimiento durante y luego de éste es necesaria para pesquisar y resolver precozmente las complicaciones.

Summary: Introduction: painful procedures are gradually increasing frequency in pediatrics emergency units. Controlling pain and mitigating fear and anxiety are of the essence when assisting pediatric patients and one of the priorities of emergency doctors. Objective: to describe using sedoanalgesia with ketamine and fentanyl as the only drug or associated with other drugs during painful procedures, at the Pediatrics Emergency Unit, of the Pereira Rossell Hospital Center. Method: descriptive, retrospective study from January 2011 to July 2016. Population: all patients who received sedoanalgesia with ketamine and fentanyl (as the only drug or associated with other drugs) during painful procedures at the Pediatrics Emergency Unit, of the Pereira Rossell Hospital Center. Database: medical records. Effectiveness was measured by success of the procedure and safety in terms of adverse effects in connection with it. Results: N=352 children younger than 15 years old. 96 received ketamine and 256 received fentanyl. Average age was 7 years old and 245 of them were boys. Average dose of ketamine was 1 mg/kg, average dose of fentanyl was 1 ɤ/kg. Main indications for sedoanalgesia included: orthopaedic procedures (264), thoracentesis (62). Procedures were successful in 352 patients. 100% of cases involved cardiovascular monitoring and blood oxygen saturation meter. Adverse effects: 6 (no advanced life support manoeuvres required). No patient changed final destination. Conclusions: the use of sedoanalgesia was effective and safe, when applied by emergengy pediatricians qualified in the handling of drugs and advanced life support. Monitoring during and after procedure is required to determine and solve complications at an early stage.

Resumo Introdução: a realização de procedimentos dolorosos é cada vez mais frequente na área de emergência pediátrica. Controlar a dor, mitigar o medo e a ansiedade é um elemento-chave no atendimento ao paciente pediátrico e uma das prioridades do médico de emergência. Objetivo: descrever a experiência em sedação e analgesia com ketamina e fentanil como fármaco único ou associado a outros para procedimentos dolorosos, no Serviço de Emergência Pediátrica (DEP) do Centro Hospitalar Pereira Rossell (CHPR) Material e métodos: estudo descritivo retrospectivo. Período: janeiro de 2011 a julho de 2016. População: todos os pacientes que receberam sedação e analgesia com ketamina ou fentanil (isoladamente ou em combinação com outras drogas) para realização de procedimentos dolorosos no DEP-CHPR. Banco de dados: prontuários médicos. A eficácia foi medida pelo sucesso do procedimento e a segurança pela presença de efeitos adversos associados. Resultados: n = 352 crianças menores de 15 anos. 96 receberam ketamina e 256 receberam fentanil. Idade média: 7 anos, sexo masculino: 245. Dose média de ketamina 1 mg / kg. Dose média de fentanil 1 ɤ/kg. Principais indicações para sedação e analgesia: procedimentos ortopédicos (264), toracocentese (62). Procedimento com sucesso: 352 pacientes. Monitorização cardiovascular e oximetria durante o procedimento: 100%. Efeitos adversos: 6 (não requer manobras de suporte avançado de vida). Nenhum paciente mudou seu destino final. Conclusões: o uso da sedação e analgesia foi eficaz e seguro realizado por pediatra de emergência capacitado em manejo farmacológico e suporte avançado de vida. O monitoramento do procedimento durante e após é necessário para investigar e resolver precocemente as complicações.

Síndrome serotoninérgico como reacción adversa infrecuente ante la sinergia entre Linezolid y Fentanilo: presentación de caso / Serotonin syndrome as an infrequent adverse reaction to synergy between Linezolid and Fentanyl: case presentation

Resumen El síndrome serotoninérgico es una condición potencialmente mortal causada por medicamentos que afectan el metabolismo de la serotonina o que actúan como agonistas directos del receptor de esta o una combinación de ambos. El síndrome da lugar a una variedad de manifestaciones mentales, autonómicas y neuromusculares, que pueden variar desde leves hasta potencialmente mortales. Se reporta el caso clínico de un paciente el cual desarrolló este síndrome por la coadministración y sinergismo de linezolid y fentanilo, con una gran variedad de características clínicas, desde las más sutiles, como cifras tensionales altas de difícil manejo mientras se encontraba bajo el efecto de sedoanalgesia, hasta las manifestaciones más floridas del síndrome posterior a la suspensión de esta. La asociación de estos medicamentos representa una etiología poco informada que puede favorecer la aparición del síndrome, mientras que el uso de benzodiazepinas puede enmascarar el cuadro dificultando su diagnóstico. MÉD.UIS.2020;33(3): 59-66

Abstract Serotonin syndrome is a life-threatening condition caused by medications that affect serotonin metabolism or that act as direct agonists for serotonin receptor or a combination of both. The syndrome gives rise to a variety of mental, autonomic, and neuromuscular manifestations, which can range from mild to life-threatening. We report a clinical case of a patient who developed this syndrome due to the co-administration and synergism of linezolid and fentanyl, with a wide variety of clinical characteristics, from the most subtle, such as high blood pressure levels difficult to manage while under the effect of sedoanalgesia, to the most florid manifestations of the syndrome after 48 hours of its suspension. The association of these drugs represents a poorly reported etiology that may favor the appearance of the syndrome, while the use of benzodiazepines may mask the condition, making its diagnosis difficult. MÉD.UIS.2020;33(3): 59-66

Comparison of post-anesthesia recovery time in sedated patients for colonoscopy using midazolam or fentanyl associated with propofol / Comparação do tempo de recuperação pós-anestésica em pacientes sedados para colonoscopia usando midazolam ou fentanil associados a propofol

ABSTRACT Objective: Comparison of post-anesthesia recovery time in sedated patients for colonoscopy using two drug combinations: midazolam and propofol or fentanyl and propofol. Method: Fifty patients ASA I and II, from 18 to 65 years of age, candidates for elective colonoscopy under sedation administered by an anesthesiologist, were randomized in two groups: Group A (midazolam and propofol) and Group B (fentanyl and propofol). Each patient was evaluated as for the length of the exam (Exam length), length of stay in the post-anesthesia care unit 1 and 2 (LSPACU1 and LSPACU2) and hospital discharge. Episodes of awakening, and of movement, drop in SpO2 < 90%, need for mechanical ventilation, propofol consumption, heart rate (HR) and mean blood pressure (MBP) were also evaluated. Results: Patients of group B had a recovery time in LSPACU1 statistically shorter than that for those in group A. In both groups, LSPACU1 was considered inversely proportional to LSPACU2. Hospital discharge time was similar between groups. Patients of group B had a significant decrease in MBP during and at the end of the exam, when compared to the initial measurement and that during sedation. Nevertheless, this variation was lower than 20%. No adverse event was observed. All patients were discharged on the same day, with no unexpected hospitalization. Conclusions: The combined use of fentanyl and propofol for colonoscopy sedation had a post-anesthesia recovery time in LSPACU1 shorter than that with the combination of midazolam and propofol. Nevertheless hospital discharge time was similar between groups.

RESUMO Objetivo: Comparar o tempo de recuperação pós-anestésica de pacientes sedados para colonoscopia usando duas combinações de fármacos: midazolam e propofol ou fentanil e propofol. Método: Cinquenta pacientes ASA I e II, entre 18 e 65 anos, candidatos a colonoscopia eletiva sob sedação administrada por anestesiologista, foram randomizados em dois grupos: Grupo A (midazolam e propofol) e Grupo B (fentanil e propofol). Cada paciente foi avaliado quanto ao tempo de realização do exame (TExame), tempo de permanência na sala de recuperação pós-anestésica 1 e 2 (TSRPA 1 e TSRPA2) e a alta domiciliar. Episódios de despertar, movimentação, queda de SpO2 < 90%, necessidade de assistência ventilatória, consumo de propofol, frequência cardíaca (FC) e pressão arterial média (PAM) também foram avaliados. Resultados: Pacientes do grupo B apresentaram tempo de recuperação na SRPA1 inferior estatisticamente ao grupo A. Em ambos os grupos o TSRPA1 foi considerado inversamente proporcional ao TSRPA2. O tempo de alta domiciliar foi semelhante entre os grupos. Pacientes do grupo B apresentaram redução significativa na PAM no tempos exame e final, em relação ao inicial e sedação. Entretanto, essa variação foi inferior a 20%. Não foram observados eventos adversos. Todos os pacientes evoluíram com alta domiciliar no mesmo dia, sem ocorrência de internação não prevista. Conclusões: O uso combinado de fentanil e propofol para sedação em colonoscopia produziu tempo de recuperação pós-anestésica na SRPA1 inferior a combinação midazolam e propofol. No entanto, o tempo de alta domiciliar foi semelhante entre os grupos.

Sufentanil reduces emergence delirium in children undergoing transthoracic device closure of vsd after sevoflurane-based cardiac anesthesia

Abstract Objective: The aim of this study was to evaluate whether sufentanil can reduce emergence delirium in children undergoing transthoracic device closure of ventricular septal defect (VSD) after sevoflurane-based cardiac anesthesia. Methods: From February 2019 to May 2019, 68 children who underwent transthoracic device closure of VSD at our center were retrospectively analyzed. All patients were divided into two groups: 36 patients in group S, who were given sufentanil and sevoflurane-based cardiac anesthesia, and 32 patients in group F, who were given fentanyl and sevoflurane-based cardiac anesthesia. The following clinical data were recorded: age, sex, body weight, operation time, and bispectral index (BIS). After the children were sent to the intensive care unit (ICU), pediatric anesthesia emergence delirium (PAED) and face, legs, activity, cry, consolability (FLACC) scale scores were also assessed. The incidence of adverse reactions, such as nausea, vomiting, drowsiness and dizziness, was recorded. Results: There was no significant difference in age, sex, body weight, operation time or BIS value between the two groups. Extubation time (min), PEAD score and FLACC scale score in group S were significantly better than those in group F (P<0.05). No serious anesthesia or drug-related side effects occurred. Conclusions: Sufentanil can be safely used in sevoflurane-based fast-track cardiac anesthesia for transthoracic device closure of VSD in children. Compared to fentanyl, sufentanil is more effective in reducing postoperative emergence delirium, with lower analgesia scores and greater comfort.

Comparative study of fentanyl versus tramadol as adjuvant with low dose local anaesthetic ropivacaine (0.1%) for epidural labour analgesia

Background: Toxonomy committee of International Association defined pain as an unpleasant emotional and sensory experience associated with potential tissue damage. The present study was conducted to evaluate the effect of a combination of low dose ropivacaine with fentanyl and tramadol in epidural labour analgesia.Methods: This prospective randomized double blinded clinical study was conducted in 100 patients in labour after ethical committee approval. Inclusion criteria was patients who had ASA I and ASA II (American society of anesthesiologists physical status classification system), age above 18 years, height more than 150 cm, weight less than 110 kg, either primigravidae or gravid 2. Patients were allocated into two groups Group F (ropivacaine with fentanyl) and group T (ropivacaine with tramadol) by computer generated randomisation technique.Results: In the present study, mean age in group F (ropivacaine with fentanyl) was 22.54±2.5, mean age in group T (ropivacaine with tramadol) was 22.86±2.17, and weight in group F was 56.68±2.75 and group T was 56.58±2.58. Duration of labour in group F was 3.39±1.01 hrs and in group T was 3.42±0.70 hrs. There was no significant difference between the two groups at any time points for mean VAS score. There was no significant difference in the mean heart rate and arterial blood pressure among both the groups statistically (P>0.05). More side effects were seen in group F.Conclusions: Both fentanyl and tramadol in combination with ropivacaine provide similar analgesia with minimal motor block. Both have no adverse effects on cardiotocographic parameters. However side effects were relatively more common in fentanyl group. Thus tramadol is a safer alternative to fentanyl as an adjunct to epidural labour analgesia.

Comparison of Greater Palatine Nerve Block with Intravenous Fentanyl for Postoperative Analgesia Following Palatoplasty in Children

Good pain relief after palatoplasty is important as inadequate analgesia with vigorous cry leads to wound dehiscence, removal of sutures and extra nursing care. Decrease in oxygen requirement and cardio-respiratory demand occur with good pain relief and also promotes early recovery. Preoperative opioids have concerns like sedation, respiratory depression and airway compromise. Greater palatine nerve block with bupivacaine is safe and effective without the risk of respiratory depression. The study was done to compare pain relief postoperatively with intravenous fentanyl and greater palatine nerve block in children following palatoplasty. Methods80 children of ASA I & II, between 1 to 7 years were included and allocated into two groups of 40 each. Analgesic medication was given preoperatively after induction of general anaesthesia, children in Group B received greater palatine nerve block with 2 mL 0.25% inj. Bupivacaine (1 mL on each side) and Group F received 2 μg Kg-1 I.V. fentanyl as 2 mL solution. Assessment of pain was done by FLACC scale and recovery profile by Modified Aldrete Score. Haemodynamic monitoring along with side effects was assessed. Data was analysed using SPSS software (Statistical Package of Social Science) version 17.0. p-value of < 0.05 was considered significant. ResultsPatients receiving block showed significantly better recovery profile (9.22 ± 0.39) vs (8.78 ± 0.61), duration of analgesia (482.59 +93.76) vs (174.13 +84.91) and less mean paracetamol consumption (126.66 +18.70) vs (151.79 +60.03) with comparable haemodynamics and side effects. ConclusionsGreater palatine nerve block provides effective postoperative pain relief after palatoplasty in children compared to I.V. fentanyl. It is safe, easy to perform, and free of complications.

Evaluation of adjunctive analgesia with intrathecal fentanyl along with hyperbaric bupivacaine in spinal anesthesia for elective cesarean section

Background: Cesarean section (CS) is one of the most common surgical procedures in female patients. Authors aimed to evaluate the postoperative analgesic efficacy of adding intrathecal fentanyl to bupivacaine, and its effect on the onset and duration of spinal anesthesia along with its effect on mother and neonate.Methods: Study was performed on 60 cesarean section parturients divided into two groups. Group F received 2 ml of 0.5% hyperbaric bupivacaine (10 mg) plus 0.4 ml fentanyl (20 µg), and Group B received 2 ml of 0.5% hyperbaric bupivacaine (10 mg) plus 0.4 ml of normal saline. The parameters taken into consideration were pain scores, analgesic requirement, hemodynamic stability and side effects.Results: It was found that duration of sensory block was prolonged in fentanyl group (111 minutes vs 86 minutes, p<0.001). Duration of effective analgesia (174.36 minutes vs 127.81; p value <0.001) were also found to be prolonged in Group F with requirement of fewer postoperative analgesics (1.02 vs 2.76, p=0.03). There was not much difference in the occurrence of side effects in both the groups.Conclusions: Addition of fentanyl to intrathecal bupivacaine for cesarean section increases the duration of postoperative analgesia without increasing maternal or neonatal side effects.

Antimicrobial effects of fentanyl and bupivacaine: an in vitro study / Efeitos antimicrobianos do fentanil e da bupivacaína: estudo in vitro

Abstract Study objective: In this study, we aimed to compare the antimicrobial effects of bupivacaine and fentanyl citrate and to reveal the impact on antimicrobial effect potential in the case of combined use. Design: In vitro prospective study. Setting: University Clinical Microbiology Laboratory. Measurements: In our study, in vitro antimicrobial effect of 0.05 mg.mL-1 fentanyl citrate, 5 mg.mL-1 bupivacaine were tested against Staphylococcus aureus American Type Culture Collection (ATCC) 29213, Pseudomonas aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 13883, Escherichia coli ATCC 25922 and Candida albicans ATCC 10231 as Group F (Fentanyl Citrate) and Group B (Bupivacaine), respectively. S. aureus ATCC 29213, P. aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 13883 and Escherichia coli ATCC 25922 were cultured onto Mueller Hinton agar (Oxoid, UK) plates and Candida albicans ATCC 10231 were cultured onto Sabouraud dextrose agar (Oxoid, UK) plates for 18-24 hours at 37 °C. Main results: In terms of inhibition zone diameters, S. Aureus ATCC 29213, P. aeruginosa ATCC 27853, and C. albicans ATCC10231 values obtained after 12 and 24 hours of incubation ​​were significantly higher in Group F than Group B (p < 0.001). In terms of inhibition zone diameters, E. coli ATCC 25922, and K. pneumomiae ATCC 13883 values obtained after 12 and 24 hours of incubation ​​were significantly higher in Group B than Group F (p < 0.001, E. coli 12ª hour p = 0.005). Conclusions: Addition of fentanyl to Local Anesthetics (LAs) is often preferred in regional anesthesia applications in today's practice owing especially to its effect on decreasing the local anesthetic dose and increasing analgesia quality and patient satisfaction. However, when the fact that fentanyl antagonized the antimicrobial effects of LAs in the studies is taken into account, it might be though that it contributes to an increase in infection complications. When the fact that fentanyl citrate which was used in our study and included hydrochloric acid and sodium hydroxide as protective agents, broadened the antimicrobial effect spectrum of LAs, had no antagonistic effect and showed a synergistic antimicrobial effect against E. Coli is considered, we are of the opinion that the addition of fentanyl to LAs would contribute significantly in preventing the increasing regional anesthesia infection complications.

Resumo Objetivo: O objetivo do presente estudo foi comparar os efeitos antimicrobianos da bupivacaína e citrato de fentanil e revelar o impacto no potencial do efeito antimicrobiano no caso de uso combinado. Desenho: Estudo prospectivo in vitro. Local: Laboratório de Microbiologia Clínica da Universidade. Medidas: Em nosso estudo, os efeitos antimicrobianos in vitro do citrato de fentanil na concentração de 0,05 mg.mL-1 - Grupo F e da bupivacaína na concentração de 5 mg.mL-1 - Grupo B foram testados em culturas de Staphylococcus aureus ATCC 29213 (do inglês American Type Culture Collection 29213), Pseudomonas aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 13883, Escherichia coli ATCC 25922 e Candida albicans ATCC 10231. As culturas de S. aureus ATCC 29213, P. aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 13883 e Escherichia coli ATCC 25922 foram semeadas em placas de ágar Mueller Hinton (Oxoid, Reino Unido), e a cultura de Candida albicans ATCC 10231 foi realizada em placa de ágar Sabouraud dextrose (Oxoid, Reino Unido) durante 18-24 horas a 37 °C. Principais resultados: Com relação ao diâmetro da zona de inibição, os valores de S. aureus ATCC 29213, P. aeruginosa ATCC 27853 e C. albicans ATCC10231 obtidos após 12 e 24 horas de incubação foram significantemente maiores no Grupo F do que no Grupo B (p < 0,001). Os valores do diâmetro da zona de inibição das culturas de E. coli ATCC 25922 e K. pneumomiae ATCC 13883 obtidos após 12 e 24 horas de incubação foram significantemente maiores no Grupo B do que no Grupo F (p < 0,001, E. coli na 12ª hora p = 0,005) Conclusões: A preferência atual e frequente pela adição de fentanil aos Anestésicos Locais (AL) para a realização de anestesia regional se deve sobretudo à possibilidade de redução da dose do anestésico local, a melhora na qualidade da analgesia e a satisfação do paciente. No entanto, ao considerar estudos em que o fentanil antagonizou o efeito antimicrobiano dos AL, pode-se pensar que esse fato contribua para aumento de complicação infecciosa. O citrato de fentanil usado em nosso estudo, contendo ácido clorídrico e hidróxido de sódio como agentes conservantes, ampliou o espectro de efeitos antimicrobianos dos AL, não teve efeito antagônico e demonstrou efeito antimicrobiano sinérgico contra a E. coli. Acreditamos que a adição de fentanil aos anestésicos locais traria importante contribuição na prevenção das crescentes complicações por infecção da anestesia regional.

Anestesia total intravenosa con remifentanilo vs fentanilo como base analgésica en cirugía torácica electiva / Intravenous total anesthesia with remifentanil and fentanyl as analgesic base in elective thoracic surgery

Introducción: Mantener una oxigenación adecuada durante la ventilación a un solo pulmón es el problema fundamental al que se enfrenta el anestesiólogo durante la cirugía torácica, es por ello que se mantiene una constante búsqueda del método anestésico ideal que ayude a lograr dicho objetivo. Objetivos: Evaluar los resultados de dos técnicas de anestesia total intravenosa con remifentanilo y fentanilo como base analgésica e identificar la aparición de complicaciones durante la intervención quirúrgica. Métodos: Se realizó un estudio causiexperimental prospectivo, en el Hospital Docente Clínico Quirúrgico Dr. Salvador Allende, entre enero 2013 a diciembre 2015 en 40 pacientes ASA II o III que requirieron procedimientos intratorácicos. Estos se dividieron en dos grupos. A (remifentanilo-propofol) y B (fentanilo-propofol). Se estudiaron variables hemodinámicas, de oxigenación durante la ventilación unipulmonar, el tiempo de recuperación anestésica (ventilación espontánea, apertura ocular, extubación) y la analgesia posoperatoria. Resultados: No existieron variaciones significativas en la hemodinamia, ni en la oxigenación de los enfermos con el empleo de ambas técnicas anestésicas; sin embargo, el despertar y recuperación posoperatoria a corto plazo fue mejor en el grupo A. La intensidad del dolor posoperatorio según la escala visual análoga fue menor en el grupo B. Conclusiones: Ambas técnicas son efectivas para procedimientos quirúrgicos torácicos. Con mínima interferencia en la hemodinámia y parámetros de oxigenación(AU)

Introduction: Maintaining adequate oxygenation during single-lung ventilation is a fundamental concern faced by the anesthesiologist during thoracic surgery; therefore, a constant search is maintained for the ideal anesthetic method that helps achieve this goal is maintained. Objectives: To evaluate the outcomes of two total intravenous anesthesia techniques with remifentanil and fentanyl as analgesic base and to identify the onset of complications during surgery. Methods: A prospective and quasi-experimental study was carried out at Dr. Salvador Allende Clinical-Surgical Hospital, between January 2013 and December, with 40 ASA II or III patients who required intrathoracic procedures. These were divided into two groups: A (remifentanil-propofol) and B (fentanyl-propofol). Hemodynamic variables and others of oxygenation during one-lung ventilation were studied, together with anesthetic recovery time (spontaneous ventilation, ocular opening, extubation) and postoperative analgesia. Results: There were no significant variations in the hemodynamics or oxygenation of patients with the use of both anesthetic techniques; however, awakening and short-term postoperative recovery was better in group A. Postoperative pain intensity, based on the analogue-visual scale, was lower in group B. Conclusion: Both techniques are effective for thoracic surgical procedures, with minimal effect in hemodynamics and oxygenation parameters(AU)

Comparison of Analgesic Effect of Fentanyl and Fentanyl with Midazolam as an Adjuvant to Intrathecal Bupivacaine in Lower Limb Surgeries

Introduction: Coadministration of drugs with synergistic effects considered one of the methods to increase the effectivenessof analgesia. The aim of this study is to evaluate the efficacy of midazolam to potentiate the analgesic effect of fentanyl as anadjuvant to bupivacaine.Materials and Methods: This is a hospital based prospective, randomized, double-blind interventional control study conductedat SMS medical college and hospitals, Jaipur. A total of 90 patients were enrolled in the study. They were allocated into threegroups, 30 in each. A total of 3.7 ml study drugs injected in each group. Intraoperative monitoring of hemodynamic parameters,duration of surgery, onset of sensory and motor block, duration of analgesia, sensory and motor block, and incidence of adverseeffects was done and compared.Results: There was no significant difference in mean pulse rate, systolic blood pressure, diastolic blood pressure, and meanarterial pressure (P > 0.05). The mean duration of surgery in Group A, B, and C was 101.3 ± 13.08, 92.93 ± 15.28, and 95.93± 16.03 min, respectively (P > 0.05). The mean onset time of sensory block in Group A was 7.29 ± 1.23, in B 4.92 ± 0.60, andin C 4.79 ± 0.91 min (P < 0.05). The mean onset time of motor block in Group A was 8.75 ± 0.55, in B 7.79 ± 0.42, and in C7.57 ± 0.29 min. In Group A, mean time of sensory block was 194.4 ± 6.80, in B 236.60 ± 12.79, and in C 254.30 ± 7.32 min. InGroup A, mean duration of motor block was 180.2 ± 5.22, in B 188.7 ± 4.04 and in C 199.6±6.69 min. In Group A, mean durationof analgesia was 215.7 ± 14.6, in B 445.8 ± 18.92, and in C 522.3 ± 16.33 min. The incidence of adverse effects was insignificant.Conclusion: We conclude that midazolam potentiates the effect of fentanyl in terms of prolonged duration of analgesia andprolonged motor and sensory block when used as an adjuvant of bupivacaine without any significant hemodynamic compromise.

Comparative Evaluation of Femoral Nerve Block & Intravenous Fentanly for Positioning During Spinal Anesthesia in Surgery of Femur Fractures

Introduction: Femur fractures configure an important publichealth issue and are associated with high mortality taxes andlose of functionality. Study aimed to compare the analgesiceffects of FNB with intravenous (IV) fentanyl prior topositioning for spinal block in patients with fractured femur.Material and Methods: Sixty patients scheduled for fracturedfemur surgery under spinal block. They were grouped as FNBgroup (n=30) and a fentanyl group (n=30). A spinal block wasperformed. Pain scores 15 minutes after analgesia and duringpositioning were recorded. A numeric rating pain scale (0 =no pain, 10 = maximal pain) was used. Additional fentanylrequirement during positioning and satisfaction with patientposition maintained for spinal block (yes = satisfactory, no =not satisfactory) were also recorded.Results: Base line values for Heart Rate (HR), Mean ArterialPressure (MAP) and type of surgery were comparable inboth the groups. We found an insignificant difference in HR(P>0.001) among the groups and a significantly lower MAPin FENT group (P = 0.0090). SpO2 was significantly lower inFENT group (P < 0.001).Conclusion: Femoral nerve block lowers pain and the needfor supplementary analgesia requirement