Methods: We had taken 25 treated, 25 untreated hypertensive and 25 normotensive patients undergoing different surgical and gynecological procedure under general anesthesia for this study. After pre-anesthetic check-up and premedication induction of anesthesia was done followed by intubation, maintenance of anesthesia, reversal of anesthesia. Systolic blood pressure, Diastolic blood pressure, Mean arterial pressure and Heart rate were recorded before intubation, at 1, 3, 5, minutes after intubation and thereafter every 15 minutes throughout the surgery till reversal & recovery.

Result: There was a general tendency of fall in systolic blood pressure, diastolic blood pressure, mean arterial pressure and heart rate after premedication and induction while rise during endotracheal intubation. Fluctuation in blood pressure and heart rate was more marked among untreated hypertensive patients than normotensive patients.

Conclusion: The fluctuation in hemodynamic response (systolic blood pressure, diastolic blood pressure, mean arterial pressure and heart rate) of untreated hypertensive patients under general anesthesia was more than normotensive patients.