Evaluation of perfusion index as a non-invasive tool to identify epidural lidocaine block in anesthetized dogs

2021 ◽  
Vol 48 (6) ◽  
pp. S999
Author(s):  
C. Ricco Pereira ◽  
C. Doyle ◽  
A. Wanstrath ◽  
P. Lerche ◽  
T. Aarnes ◽  
...  
Shock ◽  
1995 ◽  
Vol 4 (Supplement) ◽  
pp. 57
Author(s):  
In-nami H ◽  
Okada K ◽  
Tezuka S ◽  
Ohno T ◽  
Harashima T ◽  
...  

2020 ◽  
Vol 23 (2) ◽  
pp. 9-13
Author(s):  
Sushila Lama Moktan ◽  
Manan Karki

Introduction: Laryngoscopy and intubation is always associated with a short term reflex sympathetic pressor response. The perfusion index is an indirect, non-invasive, and continuous measure of peripheral perfusion by pulse oximeter which can detect the stress response to intubation similar to heart rate, systolic blood pressure and diastolic blood pressure. Methods: This prospective observational study enrolled sixty-five normotensive patients of American society of anesthesiologists physical status grade I and II scheduled for elective surgery under general anaesthesia. Tracheal intubation was performed after induction with intravenous fentanyl, propofol and vecuronium. Heart rate, Systolic and Diastolic Blood Pressure and Perfusion Index were measured before induction of anesthesia, before intubation and one minute, three minutes, five minutes after the insertion of the endotracheal tube. Increase in heart rate by ?10 beats per minute, systolic and diastolic blood pressure by ?15 millimeters of mercury and decrease in Perfusion index ?10% after endotracheal intubation as compared to preintubationvalue were considered positive haemodynamic changes. Results: Endotracheal intubation produced a significant increase in heart rate and blood pressure whereas perfusion index decreased significantly. Our study showed that perfusion index response criterion achieved 97.7% (Confidence interval 97.58-97.86) sensitivity in detecting the stress response to insertion of endotracheal tube whereas systolic and diastolic blood pressure achieved sensitivity of 90% and 92% respectively. Conclusion: Perfusion Index is easier, reliable and non-invasive alternative to conventional haemodynamic criteria for detection of stress response to endotracheal intubation.


2021 ◽  
pp. E459-E466

BACKGROUND: Cold hypersensitivity in the hands and feet is a common clinical symptom in Asian women. Currently, treatment of cold hypersensitivity in the hands and feet is still limited to traditional Chinese medicine, mainly herbal medicine. However, many patients with cold hypersensitivity in the hands and feet in China are not satisfied with the therapeutic effect of herbal medicine, and took medication for a longer time. Chemical lumbar sympathectomy is widely used in the treatment of plantar hyperhidrosis, diabetic foot, recalcitrant erythromelalgia, and other diseases. OBJECTIVES: This study was conducted to evaluate the short-term as well as long-term efficacy, complications, and patient satisfaction of chemical lumbar sympathectomy during treatment cold hypersensitivity in the hands and feet. STUDY DESIGN: A retrospective, observational study. SETTING: Department of Anesthesiology and Pain Medicine, Jiaxing, China. METHODS: A retrospective study of 72 patients with cold hypersensitivity in the hands and feet who received chemical lumbar sympathectomy treatment in our hospital from January 2015 to October 2018 was conducted. The heart rate, non-invasive blood pressure, oxygen saturation, visual analog scale, perfusion index, and plantar temperature were monitored and recorded in before treatment (T1) and after treatment (T2) groups. The patients were followed up on day 1, at week 1, 1 month, 3 months, 6 months, one year, and 2 years after operation for satisfaction, complications, and recurrence. RESULTS: There were no significant differences in heart rate, non-invasive blood pressure, and oxygen saturation between T1 and T2 groups (P > 0.05). Perfusion index and plantar temperature in T2 group were remarkably higher than T1 group, and the difference was statistically significant (P < 0.01). The visual analog scale score of the T2 group was significantly reduced (P < 0.01). Of all the patients who underwent chemical lumbar sympathectomy, the postoperative therapeutic effect was effective in 63 cases (87.5%) and ineffective in 9 cases (12.5%). Among the effective patients, the postoperative curative effect was shown to be excellent in 47 cases and improved in 16 cases. According to the follow-up results at day 1, 1 week, 1 month, 3 months, 6 months, 1 year, and 2 years after operation, the satisfaction rate was 87.5%, 87.5%, 81.9%, 61.1%, 52.7%, 41.6%, and 34.7%, respectively. There were no serious complications observed and 23 patients relapsed after two years. Multivariate logistic regression analysis results showed that the effect of visual analog scale (OR = 7.312, 95% CI: 1.598 – 33.646, P = 0.011) and plantar temperature (OR = 0.470, 95% CI: 0.288 – 0.766, P = 0.002) on therapeutic effect showed has statistical significance; the effect of gender (OR = 0.654, 95% CI: 0.134 – 3.181, P = 0.599), age (OR = 0.975, 95% CI: 0.916 – 1.039, P = 0.441), perfusion index (OR = 0.710, 95% CI: 0.367 – 1.375, P = 0.310), and disease course (OR = 1.019, 95% CI: 0.997 – 1.042, P = 0.088) on therapeutic effect showed no statistical significance. The effect of gender (OR = 0.451, 95% CI 0.131 – 1.554, P = 0.207), age (OR = 0.961, 95% CI 0.912 – 1.013, P = 0.141), and course of disease (OR = 1.006, 95% CI 0.997 – 1.015, P = 0.203) on postoperative recurrence showed no statistical significance. LIMITATIONS: The nonrandomized, single-center, small sample size, retrospective design is a major limitation of this study. CONCLUSIONS: Chemical lumbar sympathectomy is a valid treatment option for cold hypersensitivity in hands and feet, and computed tomography-guided percutaneous puncture chemical lumbar sympathectomy has the advantages of high success rate, less invasion, less complications, and repeatablity. KEY WORDS: Cold hypersensitivity in hands and feet, chemical lumbar sympathectomy, computed tomography-guided


2015 ◽  
Vol 68 (4) ◽  
pp. 352 ◽  
Author(s):  
Seul Gi Park ◽  
Oh Haeng Lee ◽  
Yong-Hee Park ◽  
Hwa Yong Shin ◽  
Hyun Kang ◽  
...  

2021 ◽  
pp. 175045892097926
Author(s):  
Mukri P Nasution ◽  
Mariza Fitriati ◽  
Anna S Veterini ◽  
Prihatma Kriswidyatomo ◽  
Arie Utariani

Background Post-anaesthetic shivering is frequently preceded by a decrease in peripheral blood flow. Perfusion index is a fast non-invasive method to assess peripheral blood flow, thus might be correlated with post-anaesthetic shivering. Aim To analyse the relationship between preoperative perfusion index and post-anaesthetic shivering in patients undergoing caesarean section with spinal anaesthesia. Methods In this prospective observational study, preoperative perfusion index measurements were performed on 40 participants who were undergoing elective caesarean section under spinal anaesthesia. Spinal anaesthesia was performed using Lidodex (Lignocaine + Dextrose 5%) at vertebrae L4–L5 or L3–L4 interspace. Shivering was observed until 120 minutes according to the Crossley and Mahajan scale. Statistical analysis was performed to examine the correlation and cut-off of preoperative perfusion index as a predictor for post-anaesthetic shivering. Result There was a significant relationship between preoperative perfusion index with the incidence ( p = 0.005) and the degree ( p = 0.014) of post-anaesthetic shivering. The preoperative perfusion index cut-off value based on the ROC curve was 4.2 (AUC = 0.762, p = 0.002) with a sensitivity of 73.9% and specificity of 88.2%. Participants with preoperative PI < 4.2 had a greater risk of post-anaesthetic shivering ( p < 0.001, RR = 3.13). Conclusion Preoperative perfusion index less than 4.2 can predict post-anaesthetic shivering in patients undergoing caesarean section with spinal anaesthesia.


2021 ◽  
Author(s):  
Jasmine Singh ◽  
Suksham Jain ◽  
Deepak Chawla ◽  
Shivani Randev ◽  
Supreet Khurana

Abstract Background: Neonatal sepsis is a major contributor to neonatal mortality in India. Blood culture, the gold standard for the diagnosis of sepsis takes 48-72 hours while the serological markers have suboptimal diagnostic test characteristics. Perfusion Index (PI) is a real time, non-invasive marker that can detect microcirculatory changes before other clinical manifestation of sepsis. Objective: To determine the diagnostic accuracy of PI in detecting hospital-acquired sepsis before overt clinical manifestations. Material and Methods: A prospective observational study was conducted in the Neonatal Intensive Care Unit (NICU) of a tertiary care hospital. Participants: Term and preterm neonates admitted to NICU. Methods: PI was continuously monitored in all enrolled neonates. Clinical sepsis was defined using the Neonatal Krankenhaus-Infektions-Surveillance-System (NeoKISS). PI below 1.24 and 0.88 for term and preterm neonates, respectively, was defined as low PI. The time of fall of PI below this value and time of clinical sepsis as per NeoKISS was noted and the difference was calculated. Results: Among 72 neonates (gestational age:32.2±3.2 weeks, birth weight:1420, IQR 1100-1855 g), a total of 93 events of suspected sepsis were noted, of which 70 were sepsis screen positive. 16 events were associated with culture positive sepsis. Using a cut off of 0.88 in preterm neonates, PI yielded a sensitivity of 89.47% (95% CI 78.48% to 96.04%), specificity of 56% (95% CI 34.93% to 75.60%), positive predictive value of 82.26% (95% CI 74.70% to 87.92%), and negative predictive value of 70% (95% CI 50.36% to 84.29%) in detection of hospital acquired sepsis. The positive and negative likelihood ratios came to be 2.03 (95% CI 1.30 to 3.19) and 0.19 (95% CI 0.08 to 0.43), respectively.Conclusion: This study shows that PI might serve as an early, non-invasive marker of hospital acquired sepsis in preterm neonates.


1990 ◽  
Vol 52 (2) ◽  
pp. 427-430 ◽  
Author(s):  
Hideki TABARU ◽  
Hitoshi WATANABE ◽  
Mikio TANAKA ◽  
Sanenori NAKAMA

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