Comparative clinical study of attenuation of cardiovascular responses to laryngoscopy intubation diltiazem, lignocaine and combination of diltiazem and lignocaine

Background: In contributing the patient care, Anaesthesia and endotracheal intubation have become a core part of anaesthesiologists. Via nose or mouth, the trans-laryngeal placement of endotracheal tube into the trachea is called endotracheal intubation. Aim: To compare responses of lignocaine and diltiazem and combination of both on cardiovascular endotracheal intubation in healthy, normotensive patients. Materials and methods: This was a prospective randomised study, 80 patients were scheduled for tubectomy, cholecystectomy, appendectomy, abdominal and vaginal hysterectomy. These patients were divided into four groups, 20 in each group. Group I received normal saline, Group II received lignocaine and normal saline, Group III received diltiazem and normal saline, Group IV received diltiazem and lignocaine. Results: Males were 12, 60% and females were 8, 40% in group I, males were 12, 60% and females were 8, 40% in group II, males were 12, 60% and females were 8, 40% in group III and males were 10, 50% and females were 10, 50% in group II. Most of patients were aged between 21-40 years, group I (90%), Group II (82%), Group III (86%) and Group IV (75%). The mean age of group I was 33.98±8.05, group II was 38.78±9.26, group III was 31.87±5.29 and group IV was 35.68±7.89. The attenuation was maximum in Group IV followed by group II and group III, with respect to heart rate and systolic blood pressure. Conclusion: In normotensive patients, the combination of diltiazem and lignocaine were more effective than when they were administered diltiazem and lignocaine individually for attenuating hemodynamic changes to laryngoscopy and tracheal intubation.