CLINICAL TRIAL
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
Add like
Add dislike
Add to saved papers

Comparative prophylactic and therapeutic effects of intravenous labetalol 0.4 mg/kg and nicardipine 20 μg/kg on hypertensive responses to endotracheal intubation in patients undergoing elective surgeries with general anesthesia: a prospective, randomized, double-blind study.

BACKGROUND: Laryngoscopy and tracheal intubation (LTI) after induction of general anesthesia often cause hypertension and tachycardia. Labetalol and nicardipine have been used to prevent and treat acute cardiovascular responses to LTI.

OBJECTIVE: The goal of this study was to compare the preventive and therapeutic effects of labetalol 0.4 mg/kg IV and nicardipine 20 μg/kg IV on hypertensive responses to LTI during induction of general anesthesia.

METHODS: Patients undergoing general anesthesia were randomly allocated to 4 groups. In part I (prevention), 80 patients were randomized to receive either 0.4 mg/kg of labetalol (n = 40) or 20 μg/kg of nicardipine (n = 40) 4 minutes before LTI. In part II (treatment), patients were randomized to receive 0.4 mg/kg of labetalol (n = 40) or 20 μg/kg of nicardipine (n = 40) after LTI if hypertension occurred. The number of additional study drug doses required by patients with hypertension (parts I and II) and time to return to normotension (part II) were recorded. Mean arterial pressure and heart rate were monitored, and rate-pressure product was calculated. Adverse events were also monitored.

RESULTS: A total of 130 patients (72 patients in part I and 58 patients in part II) were included in the analysis. In parts I and II, the number of patients who required additional doses of the study drug because of persistent hypertension was lower in the nicardipine groups than in the labetalol groups (P < 0.05). Mean arterial pressure was lower and heart rate was significantly higher over time in the nicardipine groups compared with the labetalol groups (P < 0.05) in parts I and II. In part II, time to return to normotension was shorter in the nicardipine treatment group than in the labetalol treatment group (61 [21] vs 130 [46] seconds; P = 0.01). No statistical differences were observed in the incidence of adverse events except for tachycardia in part I (2 cases in the labetalol prevention group vs 18 cases in the nicardipine prevention group; P = 0.01).

CONCLUSIONS: Patients who received nicardipine were less likely to require additional doses for either the prevention or treatment of hypertensive responses to LTI and responded to the study drug more rapidly than patients who received labetalol for the treatment of hypertensive responses to LTI. However, labetalol was associated with a lower incidence of tachycardia and less of an increase in rate-pressure product when used for the prevention of hypertension during LTI.

Full text links

We have located links that may give you full text access.
Can't access the paper?
Try logging in through your university/institutional subscription. For a smoother one-click institutional access experience, please use our mobile app.

For the best experience, use the Read mobile app

Mobile app image

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app

All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.

By using this service, you agree to our terms of use and privacy policy.

Your Privacy Choices Toggle icon

You can now claim free CME credits for this literature searchClaim now

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app