Comparative Study of Prophylactic Vs Conventional Phenylephrine Administration in Preventing Spinal Anaesthesia-Induced Hypotension in Elective caesarean Section Patients: A Quasi Experimental Trial

Abstract

Objective: To determine the prophylactic effect of phenylephrine in patients undergoing spinal anaesthesia in comparison to the conventional group. Study design: Quasi experimental trial. Place and duration of study: HIT Hospital Taxila in the period of 6 months. Materials and methods: This quasi-experimental trial was conducted in HIT Hospital. Total 68 females were divided into two groups: Control group and Experimental group. Each group consisted of 34 patients aged between 20 to 40 years. The patients were scheduled for elective cesarean section deliveries under spinal anaesthesia. All patients of the experimental group were given prophylactic dose of phenylephrine 100mcg diluted in normal saline after undergoing spinal anaesthesia before the start of procedure. Control group patients were only given normal saline as a placebo after undergoing spinal anaesthesia before the start of procedure. Control group patients were given phenylephrine as conventional treatment only if they experienced hypotension during the procedure. Results: Among the patients in the experimental group none experienced hypotension. Their blood pressure remained fairly constant in the normal range. In the control group, 4 out of 34 patients (11.7%) had their blood pressure dropped below the cutoff point of 90/60 mmHg. Conclusion: Our results show that a prophylactic dosage regimen i.e., 100mcg of phenylephrine is effective in controlling spinal -anaesthesia -induced hypotension in patients undergoing Caesarean-section. In comparison with conventional group where hypotension occurs only in few patients.