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The present study investigated the reliability and sensitivity of a wearable near-infrared spectroscopy (wNIRS) device in moderate and heavy exercise intensity domains. On three separate days, eleven males performed an incremental test to exhaustion, and in the following visits, four submaximal constant-load bouts (i.e., test and retest) were performed in the moderate-intensity domain (100 and 130 W) and heavy-intensity domain (160 and 190 W). The local tissue oxygen saturation index (SmO2) and pulmonary oxygen uptake (V̇O2) were measured continuously. The absolute SmO2 and V̇O2 values and the change (Δ) from the 3rd to 6th min of exercise were calculated. There was good reliability for SmO2 measurements, as indicated by the high intraclass correlation coefficient analysis (ICC ≥0.84 for all) and low coefficient of variation between the two trials (CV ≤4.1% for all). Steady-state responses were observed for SmO2 and V̇O2 from the 3rd to the 6th min in the two moderate-intensity bouts (P>0.05), whereas SmO2 decreased and V̇O2 increased from the 3rd to the 6th min in the two heavy-intensity bouts (P<0.05). Together, these findings suggested that the SmO2 measured with a wNIRS device is reliable and sensitive to track local metabolic changes provoked by slight increments in exercise intensity.
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Objective:To explore the application value of regional oxygen saturation (rSO 2) level in the prognosis evaluation of patients with acute lower limb ischemia (ALLI). Methods:Retrospective analysis of clinical data of 82 ALLI patients admitted to the ICU of Xinjiang Uygur Autonomous Region People's Hospital from June 2021 to June 2022. The subjects were divided into event group and non-event group according to the incidence of adverse events during the follow-up. The general clinical data of the two groups were compared. Multiple stepwise linear regression was used to analyze the independent related factors of rSO 2. Multivariate Cox regression was used to analyze independent risk factors of adverse events. Receiver operating characteristic (ROC) curve was used to obtain the optimal cut-off value of rSO 2 prediction adverse events. The subjects were divided into high-value group and low-value group according to the optimal cut-off value. Kaplan-Meier curve was used to analyze the difference in survival rate between groups during the follow-up. Results:A total of 82 ALLI patients were included in this study, and the incidence of adverse events during follow-up was 25.6% (21 cases). The rSO 2 of four periods and maximum, minimum, average and ankle-brachial index in the event group were significantly lower than those in the non-event group. The troponin I, troponin T, myoglobin, creatine kinase, C-reactive protein, and lactate in the event group were significantly higher than those in the non event group ( P?0.05). Multiple stepwise linear regression analysis showed that: C-reactive protein ( β=-0.320, P=0.002), lactate ( β=-0.262, P=0.009), troponin Ⅰ ( β=-0.230, P=0.025), and smoking history ( β=-0.211, P=0.034) were all independent predictors of rSO 2. Multivariate Cox regression analysis showed that 24 h rSO 2 (mean) was an independent influencing factor for adverse events in ALLI patients (adjusted HR=0.67, 95% CI:0.54-0.83, P<0.001). The 24 h rSO 2 (mean) was good in predicting the incidence of adverse events at 30, 60, and 90 days in ALLI patients (AUC were 0.934, 0.867 and 0.823), and the corresponding optimal cut-off values of rSO 2 were 59.36, 59.03 and 59.03. The sensitivity and specificity to predict adverse events in ALLI patients were 85.7% and 85.3% when the 24 h rSO 2 (mean) was 59.36 as the best cut-off value. According to the optimal cut-off , the subjects were divided into high value group (rSO 2>59.36%, 59 cases) and low value group (rSO 2≤59.36%, 23 cases), Kaplan Meier survival curve analysis showed that there was significant difference in event free survival between the two groups ( P<0.001), the high value group significantly better than the low value group. Conclusion:The 24 h rSO 2 (mean) is an independent influencing factor for adverse events in ALLI patients, and has good predictive value for prognosis.
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OBJECTIVE:Masks are one of the most important defenses against the virus.However,the impact of wearing masks during daily activities or sports on respiratory and circulatory function remains controversial.A comprehensive quantitative evaluation of the effects of mask-wearing on human heart rate,oxygen saturation and end-expiratory carbon dioxide by Meta-analysis was conducted.The effects of wearing different types of masks at different exercise intensities and time of exercise on the human respiratory and circulatory system were explored. METHODS:By February 2023,with"mask,face mask,N95,training,sports,running,walking,cycling"as the Chinese search terms and"masks,respiratory protective devices,N95 respirators,surgical face masks,exercise,resistance training,explosive training,muscle exercises"as English search terms,the experimental studies addressing the influence of exercise with a mask on hemodynamic indexes were retrieved from CNKI,Web of Science,PubMed,Cochrane Library and WanFang databases.The outcome indicators included three continuous variables-exercise center rate,blood oxygen saturation and end-expiratory carbon dioxide.Stata16.0 software was used to analyze the outcome indicators of the included literature.The PEDro scale was used as a quality assessment tool,and the funnel plot was used to analyze the impact of publication bias. RESULTS:Totally 25 articles involving 857 healthy children and adults were included in this Meta-analysis.The overall methodological quality was high,with 22 studies scoring 6 points on the PEDro scale,2 studies scoring 7 points and 1 study scoring 8 points.The meta-analysis results showed that compared with the control group,exercise with masks had no significant effect on heart rate(SMD=0.02,95%CI:-0.11 to 0.15,P=0.81),but increased end-expiratory carbon dioxide(SMD=0.60,95%CI:0.37 to 0.83,P=0.00),decreased oxygen saturation(SMD=-0.28,95%CI:-0.47 to-0.09,P=0.03).Intensity and duration were the factors that affected the heterogeneity between studies.Wearing a mask during high-intensity exercise significantly increased heart rate(SMD=-0.20,95%CI:-0.36 to-0.04,P=0.02).The effect of high-intensity and short-time exercise on blood oxygen saturation was significantly higher than that of other exercises(SMD=-0.40,95%CI:-0.70 to-0.10;SMD=-0.25,95%CI:-0.45 to-0.04).For end-expiratory carbon dioxide,maintaining a certain intensity and increasing the exercise time or increasing the intensity further increased the index significantly,reaching a moderate effect size(SMD=0.61,95%CI:0.06 to 1.15;SMD=0.58,95%CI:0.04 to 1.13). CONCLUSION:Existing evidence suggests that exercise with masks may have the adverse effect of increasing end-expiratory carbon dioxide and decreasing blood oxygen saturation.The influence of different exercise test time and intensities on the three outcome indexes was different.Wearing a mask during high-intensity exercise can significantly increase heart rate and decrease blood oxygen saturation.Maintaining moderate intensity for a long period or further increasing the intensity of exercise will lead to increased end-expiratory carbon dioxide levels.
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Objective:To evaluate the diagnostic value of intestinal regional oxygen saturation（rSO 2）and fecal calprotectin in the occurrence and severity of necrotizing enterocolitis（NEC）in premature infants. Methods:A prospective observational study was conducted among premature infants admitted to Quanzhou Children's Hospital from October 2019 to December 2022. Intestinal rSO 2 was monitored within two hours of diagnosis of NEC，and fecal calprotectin was measured. Results:A total of 60 patients were included, including 30 cases with NEC and 30 cases without NEC, 14 cases of medical NEC, 16 cases of surgical NEC, and eight infants died due to NEC. Infants with NEC had lower intestinal rSO 2 [49（30，60）% vs. 66（60，69）%] and higher calprotectin levels [479（297，886）μg/g vs. 203（113，275）μg/g] than those in infants without NEC ( P<0.01). The levels of intestinal rSO 2 were lower in surgical NEC than those in medical NEC，and were lower in the death group than that in the survival group ( P<0.01)，but no similar difference was found in the levels of calprotectin. ROC curve analysis showed that intestinal rSO 2 combined with calprotectin had a sensitivity of 73%，a specificity of 100%，and the largest area under curve of 0.91 in the diagnosis of NEC. Intestinal rSO 2 had an optimal cut-off value of 31% in predicting death in infants with NEC，with a sensitivity of 100%，a specificity of 95%，and an area under curve of 0.99. Conclusion:Intestinal rSO 2 and fecal calprotectin can effectively identify the presence of NEC，and their combined detection can improve the diagnostic efficiency. Intestinal rSO 2 is a good predictor of the severity of NEC，but not fecal calprotectin.
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Objective:To study the application effect of family integrated ward in maintaining the optimal target pulse oxygen saturation (SpO 2) in premature infants with bronchopulmonary dysplasia (BPD). Methods:This was a retrospective cohort study. Premature infants with BPD admitted to the neonatal intensive care unit of Children's Hospital of Nanjing Medical University from June 2019 to January 2022 were enrolled. Based on whether to stay in family integrated ward and implement family integrated care (FICare), these premature infants were divided into the family ward group and the control group. The ratio of optimal target SpO 2 within 24 h before discharge, the duration of home oxygen therapy, and ratio of readmission due to respiratory disease within 6 months after discharge were analyzed between the two groups. Results:During the study period, a total of 167 premature infants with BPD were admitted, including 101 in the family ward group and 66 in the control group. Compared with the control group, the family ward group showed a higher proportion of achieving the optimal target SpO 2 within 24 h before discharge (58.0% vs. 24.0%), shorter duration for home oxygen therapy (7.0 d vs. 12.0 d), and a lower readmission rate within 6 months after discharge (16.5% vs. 30.2%), which had statistically significant difference (all P<0.05). Further regression analysis showed that participating in the family integrated ward significantly reduced the demand for home oxygen therapy and the duration of home oxygen therapy, but had no significant impact on the readmission rate within 6 months after discharge. Conclusions:Family integrated ward can effectively increase the proportion of achieving the optimal target SpO 2 for premature infants with BPD within 24 h before discharge, reduce the demand for home oxygen therapy, and shorten the time of home oxygen therapy after discharge, which is beneficial for improving the living quality of premature infants with BPD.
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Abstract Introduction Cricothyrotomy, percutaneous dilation tracheostomy, and tracheostomy are all cost-effective and safe techniques used in the management of critically ill patients who need an artificial airway other than endotracheal tube ventilation. The present study focused on enlightening on elective and emergency procedures performed on conditions present with difficult airways and also attempts to shed light on the aspects of securing an airway in anticipated and unanticipated difficult intubation. Objective The objective of the study was to compare the three procedures conducted during difficult airway/failed intubation situations. Methods The present retrospective observational study was conducted collecting data from patient files obtained at a tertiary healthcare center from 2013 to 2018. The difficult intubation cases were managed by ear, nose, and throat (ENT) surgeons. The study compared three methods: Cricothyrotomy, percutaneous dilation tracheostomy, and tracheostomy based on factors such as procedure duration, complications, and the instruments required for each procedure. Results The study enrolled 85 patients, 61 males and 24 females, aged between 30 and 70 years old. To perform cricothyrotomy, only a simple blade was required. Cricothyrotomy had the shortest operating time (4.1±3.1 minutes) and the shortest time of full oxygen saturation (3 min). Percutaneous tracheostomy had the least amount of bleeding (1%). Cricothyrotomy significantly showed the least intraoperative bleeding than percutaneous dilation, tracheostomy, and tracheostomy (p = 0.001). Conclusion Cricothyrotomy is preferable as it takes less time to perform, causes less bleeding, and takes the least time for full oxygen saturation than tracheostomy and percutaneous dilatational tracheostomy in "can't intubate, can't oxygenate" patients.
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ABSTRACT Introduction: Traditional intermittent hypoxia training improves sport performance after short periods of exposure, but acute exposure to intermittent hypoxia leads to decreased training intensity and technical quality. The solution to overcome these negative effects may be to perform efforts in normoxia and the intervals between efforts in hypoxia, maintaining the quality of training and the benefits of hypoxia. Objective: This study aimed to evaluate the acute physiological responses to hypoxia exposure during recovery between high intensity efforts. Materials and methods: Randomized, one-blind, placebo-controlled study. Sixteen men performed a graded exercise test to determine their maximal intensity and two sessions of high-intensity interval training. The training intervals could be in hypoxia (HRT), FIO2: 0.136 or normoxia (NRT), FIO2: 0.209. During the two-minute interval between the ten one-minute efforts, peripheral oxygen saturation (SpO2), heart rate (HR), blood lactate ([La]), blood glucose ([Glu]) were constantly measured. Results: There were differences in HR (TRN = 120 ± 14 bpm; TRH = 129 ± 13 bpm, p < 0.01) and SpO2 (TRN = 96.9 ± 1.0%; TRH = 86.2 ± 3.5%, p < 0.01). No differences in [La] and [Glu] TRN (4.4 ± 1.7 mmol.l-1; 3.9 ± 0.5 mmol.l-1) and TRH (5.2 ± 2.0 mmol.l-1; 4.0 ± 0.8 mmol.l-1, p = 0.17). Conclusion: The possibility of including hypoxia only in the recovery intervals as an additional stimulus to the training, without decreasing the quality of the training, was evidenced. Level of Evidence II; Randomized Clinical Trial of Minor Quality.
RESUMEN Introducción: El entrenamiento tradicional en hipoxia intermitente mejora el rendimiento deportivo tras cortos periodos de exposición, sin embargo, la exposición aguda a la hipoxia intermitente conduce a una disminución de la intensidad del entrenamiento y de la calidad técnica. La solución para superar estos efectos negativos puede ser realizar los esfuerzos en normoxia y los intervalos entre esfuerzos en hipoxia, manteniendo la calidad del entrenamiento y los beneficios de la hipoxia. Objetivo: Este estudio pretendía evaluar las respuestas fisiológicas agudas a la exposición a la hipoxia durante la recuperación entre esfuerzos de alta intensidad. Materiales y métodos: Estudio aleatorizado, a ciegas y controlado con placebo. Dieciséis hombres realizaron una prueba de ejercicio graduado para determinar su intensidad máxima y dos sesiones de entrenamiento por intervalos de alta intensidad. Los intervalos de entrenamiento podían ser en hipoxia (HRT), FIO2: 0,136 o normoxia (NRT), FIO2: 0,209. Durante el intervalo de dos minutos entre los diez esfuerzos de un minuto, se midieron constantemente la saturación periférica de oxígeno (SpO2), la frecuencia cardiaca (FC), el lactato en sangre ([La]) y la glucemia ([Glu]). Resultados: Hubo diferencias en la FC (TRN = 120 ± 14 lpm; TRH = 129 ± 13 lpm, p < 0,01) y la SpO2 (TRN = 96,9 ± 1,0%; TRH = 86,2 ± 3,5%, p < 0,01). No hubo diferencias en [La] y [Glu] TRN (4,4 ± 1,7 mmol.l-1; 3,9 ± 0,5 mmol.l-1) y TRH (5,2 ± 2,0 mmol.l-1; 4,0 ± 0,8 mmol.l-1, p = 0,17). Conclusión: Se evidenció la posibilidad de incluir hipoxia sólo en los intervalos de recuperación como estímulo adicional al entrenamiento sin disminuir la calidad del mismo. Nivel de Evidencia II; Ensayo Clínico Aleatorizado de Baja Calidad.
RESUMO Introdução: O treinamento de hipóxia intermitente tradicional melhora o desempenho esportivo após curtos períodos de exposição, porém a exposição aguda à hipóxia intermitente leva à diminuição da intensidade do treinamento e da qualidade técnica. A solução para superar esses efeitos negativos pode ser realizar esforços em normóxia e os intervalos entre os esforços em hipóxia, mantendo a qualidade do treinamento e os benefícios da hipóxia. Objetivo: Este estudo teve como objetivo avaliar as respostas fisiológicas agudas à exposição de hipóxia durante a recuperação entre esforços de alta intensidade. Materiais e métodos: Estudo aleatório e one-blinded, com efeito placebo controlado. Dezesseis homens realizaram um teste de exercício graduado para determinar sua intensidade máxima e duas sessões de treinamento intervalado de alta intensidade. Os intervalos de treinamento podem ser em hipóxia (TRH), FIO2: 0,136 ou normóxia (TRN), FIO2: 0,209. Durante os dois minutos de intervalo entre os dez esforços de um minuto, foram medidos constantemente a saturação periférica de oxigênio (SpO2), frequência cardíaca (FC), lactato sanguíneo ([La]), glicemia ([Glu]). Resultados: Houve diferenças na FC (TRN = 120 ± 14 bpm; TRH = 129 ± 13 bpm, p <0,01) e SpO2 (TRN = 96,9 ± 1,0%; TRH = 86,2 ± 3,5%, p <0,01). Sem diferenças em [La] e [Glu] TRN (4,4 ± 1,7 mmol.l-1; 3,9 ± 0,5 mmol.l-1) e TRH (5,2 ± 2,0 mmol.l-1; 4,0 ± 0,8 mmol.l-1, p = 0,17). Conclusão: Evidenciou-se a possibilidade de incluir a hipóxia apenas nos intervalos de recuperação como um estímulo adicional ao treinamento, sem diminuir a qualidade do treinamento. Nível de Evidência II; Estudo Clínico Randomizado de Menor Qualidade.
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Abstract Background: Arterial oxygen saturation (SaO2) values are used to make clinical decisions that might change a patient's prognosis, and it has been proposed as the fifth vital sign. This study aimed to determine the variation of SaO2 at different altitudes above sea level (ASL) in healthy Mexican full-term newborns. Methods: From July 2018 to June 2019, a cross-over study was conducted in six hospitals at different altitudes ASL in Mexico. SaO2 was measured in 4015 newborns after the first 24 h of birth and before leaving the hospital using pulse oximetry. We analyzed three groups: < 250 m ASL (group 1), 1500 m ASL (group 2), and 2250 m ASL (group 3). Results: The mean SaO2 was 97.6 ± 1.8%. For group 1, mean oxygen saturation was 98.2 ± 1.9%; for group 2, 96.7 ± 1.9%, and for group 3, 96.0 ± 2.1%. A statistically significant difference was observed among the groups (p < 0.001), and this difference was higher between groups 1 and 2 (1.5%, p < 0.001). Linear regression analysis showed a decrease in oxygen saturation of 1.01% for every 1000 m ASL. Conclusions: We demonstrated a statistically significant reduction in SaO2 levels at higher altitudes. This observation can be relevant for clinical decision-making based on pulse oximetry such as critical congenital heart disease screening in Mexico, where more than half of the population lives above 1500 m ASL.
Resumen Introducción: Los valores de SaO2 (saturación de oxígeno) se utilizan para la toma de decisiones clínicas que podrían cambiar el pronóstico del paciente. El objetivo de este estudio fue determinar la variación de la SaO2 en recién nacidos mexicanos a término sanos a diferentes altitudes en México. Métodos: Se llevó a cabo un estudio transversal en seis hospitales situados a diferentes altitudes en México. Se determinó la SaO2 usando oximetría de pulso en 4015 recién nacidos después de las primeras 24 horas de vida, pero antes del egreso del hospital de nacimiento. Se formaron tres grupos para el análisis: grupo 1 con altitud < 250 m sobre el nivel del mar (SNM); grupo 2, altitud de 1500 m SNM y grupo 3, altitud de 2250 m SNM. Resultados: El promedio de la SaO2 fue de 97.6 ± 1.8%. Para el grupo 1, la media fue 98.2 ± 1.9%, para el 2, 96.7 ± 1.9% y para el 3, 96.0 ± 2.1%. Se observó una diferencia estadísticamente significativa entre los grupos (p < 0.001), que fue mayor entre los grupos 1 y 2 (1.5%, p < 0.001). El análisis de regresión lineal mostró una reducción de 1.01% en la SaO2 por cada 1000 m SNM. Conclusiones: Se demostró una disminución estadísticamente significativa de los valores de SaO2 conforme aumenta la altitud. Esto puede ser de particular relevancia en la toma de decisions clínicas basadas en la oximetría de pulso, como el tamiz neonatal cardiaco, sobre todo en México donde mas de la mitad de la población vive a una altitud superior a 1500 m SNM.
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Introducción: La COVID-19 genera afectación durante el proceso de la enfermedad en el aparato respiratorio y cardiovascular; sin embargo, se desconoce si esta afectación desaparece con la resolución del proceso inflamatorio o se mantienen en forma de secuela con el de cursar del tiempo. Objetivo: Analizar la capacidad funcional cardiorrespiratoria en pacientes entre 30 y 60 años post COVID-19. Métodos: Se realizó una investigación básica, no experimental, descriptiva y transversal que incluyó 328 pacientes, de los cuales 178 formaron parte de la muestra. Se analizaron características generales, la capacidad funcional respiratoria y cardiovascular. Resultados: Promedio de edad de 53,48 años con predominio de pacientes femeninas (55,62 %). El 33,15 % de los pacientes refirió una comorbilidad asociada. El 15,73 % de los pacientes presentaba bradicardia y el 8,99 % taquicardia. En el 42,70 % de los casos se identificó enfermedad hipertensiva. Las manifestaciones respiratorias estuvieron dadas por la presencia de disnea y porcentaje elevado de pacientes con taquipnea y trastornos de la saturación de oxígeno. Conclusiones: Después de transcurridos 6 meses de la presencia de COVID-19 un elevado porcentaje de pacientes presentaban manifestaciones cardiorrespiratorias que afectaban la capacidad funcional de ambos aparatos.
Introduction: COVID-19 affects the respiratory and cardiovascular systems during the disease process; however, it is unknown if this affectation disappears with the resolution of the inflammatory process or if it remains in the form of a sequel over time. Objective: To analyze the cardiorespiratory functional capacity in patients between 30 and 60 years old post COVID-19. Methods: A basic, non-experimental, descriptive and cross-sectional investigation was carried out that included 328 patients, of which 178 were part of the sample. General characteristics, respiratory and cardiovascular functional capacity were analyzed. Results: Average age of 53,48 years with a predominance of female patients (55.62 %). 33.15 % of the patients reported an associated comorbidity. 15.73 % of the patients presented bradycardia and 8.99 % tachycardia. Hypertensive disease was identified in 42.70 % of the cases. The respiratory manifestations were given by the presence of dyspnea and a high percentage of patients with tachypnea and oxygen saturation disorders. Conclusions: After 6 months of the presence of COVID-19, a high percentage of patients presented cardiorespiratory manifestations that affected the functional capacity of both devices.
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Objective:To investigate the value of pulse oxygen saturation (SpO 2) monitoring in predicting children with moderate-to-severe obstructive sleep apnea (OSA). Methods:It was a retrospective study involving 341 children with snoring during nighttime sleep who had visited the Children′s Hospital of Soochow University from June 2017 to November 2020 and monitored for polysomnography (PSG) and SpO 2.The SpO 2 parameters mainly included oxygen desaturation index (ODI), oxygen desaturation index ≥3% (ODI3), oxygen desaturation index ≥4% (ODI4), mean pulse blood oxygen saturation (MSpO 2), lowest pulse blood oxygen saturation (LSpO 2), cumulative time spent with blood oxygen saturation below 95%, 92% and 90%(T95, T92 and T90). According to obstructive sleep apnea hypopnea index (OAHI), patients were divided into the snoring and mild OSA group (OAHI≤5 times/h) and moderate-to-severe OSA group (OAHI>5 times/h). Differences in SpO 2 parameters were compared between groups using the Chi- square test and Mann- Whitney U test. Spearman correlation analysis was used to analyze the correlation between SpO 2 parameters and OAHI in all children.The SpO 2 parameters were included in the Logistic regression model.Receiver operating characteristic (ROC) curve was used to analyze the diagnostic efficiency of SpO 2 parameters on moderate-to-severe OSA. Results:A total of 341 patients were recruited, including 206 male and 135 female patients with the mean age, body mass index (BMI) and OAHI of 6.0 (4.0, 7.5) years, 16.2 (15.1, 18.0) kg/m 2 and 0.6 (0.1, 3.0) times /h, respectively.There were 283(83.0%) and 58 (17.0%) patients in the snoring and mild OSA group and moderate-to-severe OSA group.The ODI3[0.7 (0.3, 1.4) times/h vs.7.7 (4.4, 12.8) times/h], ODI4[0.4 (0.1, 0.8) times/h vs.5.3 (2.7, 9.1) times/h], T95[1.4 (0.3, 5.3) min vs.13.7 (7.0, 33.5) min], T92[0.1 (0, 0.5) min vs.1.8 (0.9, 6.0) min] and T90[0 (0, 0.1) min vs.0.6 (0.2, 2.2) min] were significantly lower in the snoring and mild OSA group than those of moderate-to-severe group, while LSpO 2[91.0 (89.0, 93.0)% vs.86.5 (82.0, 88.0)%] and MSpO 2[ 97.0 (97.0, 98.0)% vs.96.0 (96.0, 97.0)%] were significantly higher(all P<0.001). All SpO 2 parameters were significantly correlated with OAHI (all P<0.001), and the correlation coefficient between ODI3 and OAHI was 0.660.ODI3 was an independent predictor of moderate-to-severe OSA ( OR=3.117, 95% CI: 1.635-5.945, P=0.001). The area under the ROC curve of ODI3 in predicting the moderate-to-severe OSA was 0.957, and the cut-off value of 3.45 times/h and specificity of 95.4%.MSpO 2 was an independent predictor of moderate-to-severe OSA ( OR=2.917, 95% CI: 1.589-5.354, P=0.001). Conclusions:ODI3 can be used to predict the moderate-to-severe OSA in children.
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Objective To observe the effects of thoracic paravertebral nerve block(TPVB)combined with preserved spontaneous respiratory anesthesia on intraoperative local cerebral oxygen saturation(SrcO2)and postoperative delirium(POD)in elderly patients undergoing thoracoscopic surgery.Methods A total of 80 elderly patients who planned to undergo thoracoscopic wedge resection of lung were randomly divided into the control group and the observation group,and finally 76 patients completed the study,with 39 cases in the control group and 37 cases in the observation group.The control group was given general anesthesia under single lung ventilation,while the observation group was given TPVB combined with preserved spontaneous respiratory anesthesia.Patients'SrcO2 was monitored by a near infrared spectrometer,and the decrease of SrcO2 from baseline by≥10%was considered as cerebral oxygen desaturation(COD).The preoperative baseline value of SrcO2,intraoperative lowest value of SrcO2,the incidence and duration of COD of the two groups were compared.The operation situation,the incidence of hypotension,hypoxemia,delayed awakening and analgesic recovery rate were counted.The incidence of POD and pain visual analogue scale(VAS)score 2 hours,24 hours and 72 hours after surgery were evaluated.The hospitalization time was recorded,and the quality of recovery-40(QoR-40)scores at admission and discharge were evaluated.Results There was no significant difference in operative time,intraoperative blood loss,preoperative baseline value of SrcO2,VAS score 2 hours after surgery and QoR-40 score at admission between the two groups(P>0.05).Compared with the control group,the observation group had higher intraoperative lowest value of SrcO2(P<0.05),lower incidence and shorter duration of COD(P<0.05),lower incidence of POD 2 hours,24 hours and 72 hours after surgery(P<0.05),lower VAS scores 24 hours and 72 hours after surgery and analgesic recovery rate(P<0.05),lower/shorter incidence of intraoperative hypotension,delayed awakening and hospitalization time(P<0.05),and higher QoR-40 scores at discharge(P<0.05).Conclusion TPVB combined with preserved spontaneous respiratory anesthesia can improve the level of cerebral oxygenation and reduce the occurrence of POD in elderly patients undergoing thoracoscopic surgery.
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Objective:To explore the application effect of anesthesia management based on cerebral oxygen saturation monitoring in elderly non-small cell lung cancer (NSCLC) radical surgery and its impact on patient cognitive function.Methods:Ninety elderly NSCLC patients who were treated at the Sixth Affiliated Hospital of South China University of Technology from June 2022 to January 2023 were selected. The patients were divided into an observation group ( n=45) and a control group ( n=45) using the envelope method. Both groups underwent radical lung cancer surgery under general anesthesia, while the control group received routine anesthesia management and the observation group received anesthesia management based on cerebral oxygen saturation monitoring. The surgical time, intraoperative blood loss, anesthesia time, remifentanil dosage, and propofol dosage were observed in two groups. At the same time, differences in serum interleukin-6 (IL-6), C-reactive protein (CRP), procalcitonin (PCT), and other levels were compared between the two groups. Results:There was no statistically significant difference in surgical time, intraoperative blood loss, anesthesia time, and remifentanil dosage between the two groups (all P>0.05); The dosage of propofol in the observation group was (880.41±41.06)mg, significantly lower than that in the control group ( P<0.05). The mean arterial pressure (MAP) and heart rate (HR) in the observation group were significantly higher than those in the control group at 5 minutes (T 1) and 30 minutes (T 2) after anesthesia (all P<0.05); The local cerebral oxygen saturation (rSO 2) and bispectral index (BIS) of the observation group at T 1, T 2, and postoperative (T 3) were significantly higher than those of the control group (all P<0.05). The serum levels of IL-6, CRP, PCT, tumor necrosis factor α (TNF-α), and S-100b in the observation group at 24 hours postoperatively were (13.36±1.22)mg/L, (10.08±1.12)ng/L, (0.94±0.15)ng/ml, (11.15±1.26)ng/L, and (1 445.15±180.05)ng/L, respectively, significantly lower than those in the control group (all P<0.05). The MMSE score of the observation group at 24 hours post surgery was (25.78±1.02), significantly higher than that of the control group ( P<0.05). The incidence of postoperative cognitive impairment in the observation group and the control group was 4.44%(2/45) and 8.89%(4/45), respectively, with no statistically significant difference ( P=0.673). Conclusions:Anesthesia management based on cerebral oxygen saturation monitoring has a good application effect in elderly NSCLC radical surgery, with small fluctuations in patient hemodynamic indicators, which can inhibit inflammatory factor levels and have a mild impact on postoperative cognitive function.
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Objective:To explore the application research of isolated esophageal ventilation device in painless gastroscopy.Methods:A total of 200 patients who underwent painless gastroscopy requiring esophageal isolation were selected,and they were randomly divided into an observation group(isolated esophageal ventilation device + gastroscopy)and a control group(ordinary mask ventilation + gastroscopy),with 100 cases in each group.The heart rates,blood pressures,the numbers of breaths and blood oxygen saturation(SpO2)of 5 time points of two groups were recorded at entering time(T0),pre installing ventilation device(T1),post installing ventilation device(T2),during gastroscopy(T3)and post gastroscopy(T4).And then,the incidence of complications,occurrence of adverse events,total dosages of Propofol,operation times of gastroscopy,wake-up times and observation times of two groups were compared.Patients'satisfactions for the examination were evaluated by self-designed satisfaction survey and evaluation scale.Results:The differences of SpO2 between the two groups of patients at T1-T4 time points were statistically significant(t=23.150,t=14.720,t=17.900,t=18.520,P<0.05),respectively,and the difference of that between two groups at T0 time point was not statistically significant.There were no significant differences in blood pressure,heart rate and respiratory frequency between the two groups of patients at different time points.The total incidences of complications in the control group and the observation group were respectively 68.00％ and 13.00％.The total incidence of complications in the control group was significantly higher than that in the observation group,and the difference was statistically significant(x2=62.766,P<0.05).The total dosage of Propofol,time of gastroscopy examination and observation time of the observation group were significantly lower than those of the control group,and the differences were statistically significant(t=4.977,t=20.040,t=6.486,P<0.05),respectively.There was no statistically significant difference in the wake-up time between the two groups of patients.The satisfaction rates of the control group and observation group were respectively 79.00％ and 95.00％for painless gastroscopy,and the satisfaction rate of the control group was significantly lower than that of the observation group,and the difference was statistically significant(x2=11.317,P<0.05).Conclusion:In the application of the isolated esophageal ventilation device in painless gastroscopy,the SpO2 decrease of preventive operation can improve the oxygenation state of patients,and decrease the incidence rate of chocking cough and other adverse reactions,and reduce the occurrence of gastric reflux,and shorten the time of gastroscopy examination,and enhance the satisfaction of patients for examination,which has better safety.
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Objective:To systematically review and evaluate the effect of intraoperative regional cerebral oxygen saturation (rSO 2) monitoring on perioperative neurocognitive disorders (PNDs) in elderly patients undergoing non-cardiac surgery. Methods:China National Knowledge Infrastructure, Wanfang Database, China Biomedical Literature Database, China Science and Technology Journal Database, PubMed, Cochrane Library, Embase and Web of Science databases were searched from inception to October 2022 for randomized controlled trials involving the effects of intraoperative rSO 2 monitoring on PND in elderly patients underwent non-cardiac surgery. The primary outcome measure was the incidence of PND (1-7 days after surgery), and secondary outcome measures were intraoperative minimum rSO 2 (rSO 2min), intraoperative mean rSO 2 (rSO 2mean), maximum percentage of decrease (rSO 2% max) in rSO 2 from baseline (rSO 2baseline), and the Montreal Cognitive Assessment Scale was used to evaluate the quality of references that met the inclusion criteria, and data were extracted for meta-analysis using RevMan5.4 software. Results:Thirteen randomized controlled trials were enrolled, involving 1 134 patients with 557 patients in experimental group (anesthesia under rSO 2 monitoring) and 577 patients in control group. The results of meta-analysis showed that the incidence of PND was significantly lower in experimental group than in control group ( RR=0.32, 95% confidence interval [ CI] 0.25-0.41, P<0.001), the intraoperative rSO 2min was significantly higher in experimental group than in control group ( MD=7.46, 95% CI 5.05-9.86, P<0.001), and the intraoperative rSO 2mean was significantly higher in experimental group than in control group ( MD=5.49, 95% CI 3.97-7.02, P<0.001), the intraoperative rSO 2% max was significantly lower in experimental group than in control group ( MD=-6.55, 95% CI-9.03--4.07, P<0.001), and the postoperative Montreal Cognitive Assessment Scale score was significantly higher in experimental group than in control group ( MD=1.37, 95% CI 0.74-1.99, P<0.001). Conclusions:Intraoperative application of rSO 2 monitoring can reduce the occurrence of PND in elderly patients undergoing non-cardiac surgery.
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Objective:To explore the effects of game addiction disorders on brain cognitive control functions based on near-infrared spectroscopy.Methods:Thirteen subjects were screened according to the Online Game Addiction (OGA) Scale. The experimental paradigm was the stop-signal task. The relative concentration levels of oxyhemoglobin (HbO 2) and deoxyhemoglobin (Hb) in the prefrontal region of the brain during cognitive activity were collected using near-infrared spectroscopy to assess the cognitive control function of the subjects. Results:The game-addicted patients had lower keystroke accuracy in the stop-signal task than healthy subjects, and the difference was statistically significant ( P<0.05). Compared to healthy subjects, game-addicted patients had less activation in prefrontal areas and showed uncontrolled behavior and brain activity. Conclusions:Game addiction disorders impair brain cognitive control, which in turn triggers a weakening of cognitive control. The results of this study provide a reference for the prevention and treatment of game addiction.
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Objective:To evaluate the value of monitoring regional cerebral oxygen saturation (rSO 2) in the prognosis of comatose children in pediatric intensive care unit (PICU). Methods:A total of 127 coma children who admitted to PICU at Henan Children′s Hospital from January 2019 to September 2021 were collected and divided into mild[Glasgow coma score(GCS): 13-15], moderate(GCS: 9-12) and severe coma(GCS: 3-8) groups according to GCS.A cerebral oxygen monitor was used to monitor the rSO 2 of all children before treatment, and on the 3rd, 7th and 14th day after treatment.The outcomes were assessed according to the pediatric cerebral performance category (PCPC), and the children were divided into recovery group(PCPC score: 1), disability group(PCPC score: 2-4) and poor prognosis group(PCPC score: 5-6). Multiple linear regression and receiver operating characteristic(ROC) curve were used to analyze the correlation between rSO 2 and PCPC score. Results:rSO 2 in mild, moderate and severe coma groups before treatment were (78.06±3.21)%, (66.07±6.05)%, and (52.87±6.49)%, respectively ( F=209.263, P<0.05). rSO 2 before treatment was positively correlated with GCS( r=0.806, P<0.05). There were significant differences in rSO 2 among recovery group, disability group and poor prognosis group before treatment and that on the 3rd, 7th and 14th day after treatment ( P<0.05). Notably, rSO 2 in recovery group was higher than that in disability group, and rSO 2 in disability group was higher than that in poor prognosis group.The rSO 2 of three groups showed an increasing trend over time ( P<0.05). Multiple linear regression analysis showed that rSO 2 on the 7th and 14th day of treatment were independent prognostic factors ( OR -0.042, 95% CI -0.082~0.003, P<0.05; OR -0.047, 95% CI -0.094~0.000, P<0.05). ROC analysis showed that rSO 2 on the 7th day of treatment had a relatively higher prognostic value for children in coma, and the area under the ROC curve for predicting the prognosis of abnormal brain function and no wakefulness were 0.741 and 0.746, respectively. Conclusion:Monitoring rSO 2 has predictive value for the prognosis of brain function of coma children in PICU, in which the prognostic value of rSO 2 on the 7th day after treatment is relatively higher and can be used as a reference index for prognosis assessment of coma children in PICU.
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Objective:To investigate the effect of regional cerebral oxygen saturation (rSO 2) combined with neurophysiological blood pressure monitoring on brain protection and myocardial protection during carotid endarterectomy (CEA) in patients with carotid stenosis and coronary heart disease. Methods:One hundred patients with carotid artery stenosis complicated with coronary heart disease treated in Jinhua Central Hospital from June 2021 to June 2022 were randomly divided into control group and experimental group. All patients were scheduled to undergo CEA. Fifty patients in the control group were administered with empirically increasing basic blood pressure by 20% - 30%, and 50 patients in the experimental group were administered with blood pressure under the guidance of rSO 2 combined with motor evoked potentials (MEPs) and somatosensory evoked potentials (EPS). The neurological function indexes of the two groups [neuron specific enolase (NSE), central nerve specific protein (S100-β)], myocardial function indicators [cardiac troponin I (cTnI), B-type natriuretic peptide (BNP)], clinical indicators (eye opening time, extubation time, recovery room stay time, hospital stay) and the incidence of postoperative complications [delirium (POD), cognitive dysfunction (POCD), neurological impairment] were compard between the two groups. Results:Two sets of postoperative NSE and S100-β both increased ( P<0.05), but NSE and S100 in the experimental group after surgery were lower than those in the control group: (0.82 ± 0.14) μg/L vs. (1.18 ± 0.28) μg/L, (290.13 ± 27.25) mg/L vs. (301.98 ± 28.56) mg/L, the differences were statistically significant ( P<0.05). After surgery, cTnI and BNP increased in both groups ( P<0.05), but the cTnI and BNP in the experimental group were lower than those in the control group: (2.87 ± 0.74)] μg/L vs. (3.36 ± 0.83) μg/L, (3.01 ± 0.85) μg/L vs. (3.89 ± 0.92) μg/L, the differences were statistically significant ( P<0.05). The opening time, extubation time, recovery room stay time, and hospitalization time in the experimental group were shorter than those in the control group: (16.79 ± 3.15) min vs. (20.55 ± 3.83) min, (29.38 ± 4.66) min vs. (40.14 ± 4.57) min, (66.82 ± 15.80) min vs. (89.35 ± 24.78) min, (11.24 ± 4.89) d vs. (14.56 ± 6.74) d, there were statistical differences ( P<0.05). The incidence of postoperative complications in the experimental group was lower than that in the control group: 12.00% (6/50) vs. 28.00% (14/50), there was statistical difference ( P<0.05). Conclusions:The application of rSO 2 combined with neurophysiological blood pressure monitoring in CEA of patients with carotid artery stenosis and coronary heart disease has a good effect, which has brain protection and myocardial protection, can shorten the recovery time of anesthesia and hospitalization time, and reduce the incidence of postoperative complications.
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@#Abstract: Objective To explore the clinical characteristics of nucleic acid negative newborns delivered by pregnant women infected with SARS-CoV-2 (Omicron variant BA. 5.1.3) in Sanya area, and to provide evidence for understanding its clinical characteristics. Methods A retrospective analysis was performed on 14 neonates with negative nucleic acid delivered by pregnant women who tested positive for SARS-CoV-2 (Omicron variant BA.5.1.3) in Sanya Central Hospital (the Third People's Hospital of Hainan Province) from June 2022 to September 2022 (observation group, n=14). The corresponding nucleic acid-negative newborns delivered by pregnant women detected negative with SARS-CoV-2 (Omicronon variant strain BA.5.1.3) were set as the control group (n=56), and the general data and clinical characteristics of neonates in the two groups were compared. Results There was no significant difference between the observation group and the control group in pregnancy diabetes, pregnancy induced hypertension, gestational pre-eclampsia, fetal intrauterine distress, premature rupture of membranes (P>0.05); there was no significant difference between the observation group and the control group in terms of sex, gestational age, birth weight, age, mode of delivery, birth Apgar score, heart screening, pulmonary disease, glucose 6-phosphate dehydrogenase (G6PD) deficiency, thalassemia, breast milk jaundice, hemolytic jaundice (P>0.05). The bilirubin level, blue light irradiation cases and the duration of blue light irradiation of the newborns in the observation group at 7 days after birth were higher than those in the control group (P<0.05); the ratio of blood oxygen saturation ≥ 90% in the observation group was lower than that in the control group (21.43% vs 89.29%, P<0.05), and the ratio of blood oxygen saturation occasionally<90% was higher than that in the control group (57.14% vs 10.71%, P<0.05). The ratio of blood oxygen saturation<90% had no significant difference compared with that in the control group (7.14% vs 0, P>0.05), and the ratio of blood oxygen saturation reduced to the required oxygen uptake was higher than that in the control group (14.29% vs 0, P<0.05). Conclusions The jaundice manifestation of the nucleic acid-negative newborns delivered by pregnant women infected with SARS-CoV-2 (Omicronon variant strain BA.5.1.3) in Sanya area is relatively obvious, with blood oxygen saturation easily lower than 90% and even requiring oxygen inhalation in severe cases.
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Objective:To explore the correlation between intraoperative regional cerebral oxygen saturation(rScO 2) and nerve damage markers with postoperative neurological dysfunction(PND) in patients undergoing acute Stanford type A aortic dissection surgery. Methods:A total of 57 patients undergoing acute Stanford type A aortic dissection surgery under cardiopulmonary bypass(CPB) in the operating room of Henan Provincial Hospital from July 2020 to May 2021 were enrolled, regardless of gender, aged 35-64 years old, weighed 58.0-90.0 kg and with American Association of Anesthesiologists(ASA) classification status with Ⅱ-Ⅲ. A near infrared spectrometer(NIRS) was used to continuously monitor the bilateral rScO 2 of the patients during the surgery. Central venous blood was drawn 10 min before induction of anesthesia(T0), 10 min after induction of anesthesia(T1), immediately after CPB started(T2), when CPB ended(T3), at the end of the operation(T4), and when exiting ICU(T5), 1 day(T6), 2 days(T7) and 3 days(T8) after operation, and the levels of nerve injury marker S100 calcium binding protein(S100β protein) and neuron-specific enolase(NSE) in serum were measured. Follow up was performed on postoperative 3 to evaluate the occurrence of PND.The value of intraoperative rScO 2 and the concentrations serum S100β protein and NSE were compared between the PND group and the NND(NPND) group. The changes of intraoperative rScO 2 value, the concentrations of serum S100β protein and NSE between the PND group and NPND group were compared. The risk factors of PND and its correlation with the intraoperative rScO 2 value, and the concentrations of serum S100β protein and NSE were analyzed. The prognostic indicators of the two groups of patients were statistically analyzed. Results:Three patients were excluded from the study. A total of 12 patients(22.2%) developed PND(PND group), and 42 patients(77.8%) did not develop PND(NPND group) on postoperative 3 day. Compared with the NPND group, the minimum mean arterial pressure and the minimum rScO 2 during CPB were significantly decreased( P<0.05), the maximum da-rScO 2 during CPB was significantly increased( P<0.05), and duration of da-rScO 2>0.50, duration of da-rScO 2>0.40, duration of rScO 2 reduction >25%, rScO 2<0.50, rScO 2<0.40, during CPB were significantly prolonged( P<0.05) in the PND group. The levels of serum S100β and NSE in the PND group were significantly increased, compared with the NPND group at T2-8, respectively. Logistic regression analysis showed that the reduction of rScO 2 more than 25%( P=0.033), during of rScO 2<0.40( P=0.007) and duration of da-rScO 2>0.50( P=0.001) during CPB were risk factors of PND. Conclusion:Compared with the NPND group, the postoperative mechanical ventilation time, duration of ICU stay, postoperative hospital stay and PND recovery time were significantly prolonged( P<0.05), and the medical expenses were increased significantly( P<0.05) in the PND group. The duration of the reduction of rScO 2>25%, the duration of rScO 2<0.40 and the duration of da-rScO 2>0.50 during CPB are the risk factors of PND in patients with acute Stanford type A aortic dissection under CPB. Significantly increased levels of serum nerve injury markers S100β and NSE are related to the occurrence of PND. The occurrence of PND has a significant adverse effect on the early clinical prognosis of patients.
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【Objective】 To investigate the predictive value of regional cerebral oxygen saturation (rScO2) monitoring during total aortic arch replacement and stent trunk surgery for perioperative neurocognitive disorders (PND) and changes in plasma S100β protein and neuron-specific enolase (NSE) concentrations and their relationship with PND. 【Methods】 Sixty-five Stanford type A aortic dissection patients who planned to undergo total aortic arch replacement and trunk stenting were selected. Their rScO2 values were monitored throughout the operation and recorded after induction (T1), the beginning of CPB (T2), during deep hypothermic circulatory arrest (T3), rewarming to 36℃(T4), CPB stop for 1 hour (T5), and post-operation (T6). After induction (Ta), rewarming to 36℃ (Tb),1 h (Tc), 6 h (Td) and 24 h (Te) after cessation of cardiopulmonary bypass, central venous blood was collected from patients, and the concentrations of S100β protein and NSE in plasma were detected by ELISA. The patients were divided into PND group and non-PND group by the evaluation of MMSE scale at time of before operation, on the day of extubation, and 7 days after operation. 【Results】 The incidence of PND was 44.6%. The rScO2 value at T2 was significantly lower than that at T1 (P<0.05). The rScO2 value of PND group at T3 and T6 was significantly lower than that at T1 and non-PND group (P<0.05). The mean value of rScO2 and the minimum value of rScO2 in PND group were significantly lower than those in non-PND group, while rScO2 %max in PND group was significantly higher than that in non-PND group (P<0.05). The intraoperative critical value of rScO2 %max was >9.89%, the area under curve (AUC) was 0.658 (95% CI: 0.525-0.791, P<0.05), and sensitivity and specificity were 48.3% and 75.0%, respectively. The concentrations of S100β protein and NSE protein in PND group were significantly higher than those in non-PND group at Tc and Td (P<0.01). Compared with Ta, the concentration of S100β protein in PND group was significantly increased at Tc and Td (P<0.001), and the concentration of NSE protein was significantly increased at Tb-Te (P<0.01). CPB time was an independent risk factor for PND. 【Conclusion】 The occurrence of PND after total arch replacement and stenting may be related to the decrease of rScO2 and the increase of S100β protein and NSE protein. Intraoperative rScO2 %max >9.89% can be a potential predictor of PND.