Entropy as an Indicator to Measure Depth of Anaesthesia for Laryngeal Mask Airway (LMA) Insertion during Sevoflurane and Propofol Anaesthesia
Journal Title: Journal of Clinical and Diagnostic Research - Year 2017, Vol 11, Issue 7
Abstract
Introduction: Assessment of the depth of anaesthesia is fundamental to the anaesthetic practice. Entropy measurement is an objective monitoring and is of two types- Response Entropy (RE) and State Entropy (SE) indicating analgesic and hypnotic levels during general anaesthesia. Aim: The aim of our study was to assess the depth of anaesthesia for LMA placement using entropy as a tool. The assessment of entropy as an indicator of depth of anaesthesia in the form of haemodynamic variations and success rate of LMA placement. Materials and Methods: A prospective study was carried out after ethical committee approval in 100 patients, aged 20-50 years, with ASA grade I and II of either gender undergoing elective surgery lasting less than two hours under general anaesthesia. Anaesthesia was induced with sevoflurane 2.5% and IV propofol at 6 ml/min until entropy value fell from baseline values to 30-40 and then LMA insertion was performed. SE and RE values were noted every 30 seconds for five minutes. Mean blood pressure and heart rate were recorded every minute after induction for 5 minutes. Results: There was a significant change in RE and SE values within 30 seconds from start of induction. Desired values of RE (40.10±2.52) and SE (39.2±2.47) were achieved at 120 seconds to 150 seconds. Mean dose of propofol used during surgery was 86.5±3.5 mg and mean insertion time was 110±12 seconds Patients in study group had a stable haemodynamics throughout the procedure, (p-value -0.8). Conclusion: Entropy is a reliable indicator to assess depth of anaesthesia for LMA placement during sevoflurane and propofol anaesthesia.
Authors and Affiliations
Saranjit Singh, sapna bansal, garima kumar, isha gupta, J. R. thakur
Keywords
Related Articles
- EP ID EP356308
- DOI 10.7860/JCDR/2017/27316.10177
- Views 69
- Downloads 0
Evaluation of the Role of HBA1c in Chronic Kidney Disease
Introduction: Chronic Kidney Disease (CKD) refers to a group of heterogeneous disorders that results in gradual loss of structure and function of the kidneys. Aim: To evaluate the role of glycated haemoglobin (HBA1c) due...
Neoumbilicoplasty in a Laparoscopic Port Site: Description of a New Technique and Review of Literature
The umbilicus contributes significantly to the cosmetic appearance of the abdomen especially in women. Loss of umbilicus may result not only in cosmetic disfigurement but also in significant psychological effects. Omphal...
Spontaneous Subcapsular Renal Haematoma : A Case Report
Spontaneous subcapsular renal haematoma is a rare condition with wide range of presentation; it poses a dilemma for diagnosis and management. We present a case of 38-year-old female who presented with right flank pain (c...
Drug Utilisation Pattern and Adverse Events in Patients with Chronic Kidney Disease Undergoing Maintenance Haemodialysis at a Tertiary Care Hospital of Odisha
Introduction: The number of patients receiving renal replacement therapy in the form of dialysis or transplant has been increasing in recent years. Increased frequency of monitoring due to complex therapeutic regimen and...
HER2/neu Testing In 432 Consecutive Breast Cancer Cases using FISH and IHC - A Comparative Study
Introduction: The development of trastuzumab, a HER-2/ neu targeted monoclonal antibody resulted in significant improvements in clinical response and survival in HER-2/neu gene amplified group of patients. Thus, accurate...