Background: For caesarean sections, local anesthetics e.g. bupivacaine, chloroprocaine, levobupivacaine, lidocaine, ropivacaine, and tetracaine have been used generally in combination usually with opioids like morphine or fentanyl or its derivatives. Aim and Objectives: Thus this study was conducted to compare the efficacy of two different doses of 0.5% hyperbaric bupivacaine (7.5mg and 10mg) in women undergoing caesarean section.
Materials and Method:The study was conducted in the Department of Anaesthesiology, Teerthanker Mahaveer hospital, TMU, Moradabad among 80 American Society of Anaesthesiologists (ASA) physical status I and II patients scheduled for elective caesarean section. The spinal anaesthetic haemodynamic parameters, i.e., Heart Rate, Non Invasive Blood Pressure, ECG, MAP and SpO2 were monitored. The sensory and motor onset time and time to regression were recorded. Results: Group B patients had significantly higher pulse rate post-spinal(P<0.05); significantly lower pulse rate at 6,8,10,16,19,25,30,35,40,45 and 60 minutes. Group B patients had significantly high systolic blood pressure post-spinal, at 2, 4, 6, 35, and 50 minutes. Group B patients took significantly more time to attain maximum motor and sensory block than group A. APGAR scores of the neonates born to the patients of the two groups were compared. Group B patients had significantly high mean diastolic and MAP post-spinal, 2, 4, and at 6 minutes. Conclusion: Low dose (7.mg) Bupivacaine shows better hemodynamic stability whereas the conventional dose (10mg) showed a faster onset/duration of sensory block and a prolonged motor block.