| The Effect of Lidocaine, Verapamil and Lidocaine-Verapamil Combination on Blood Pressure and Heart Rate following Tracheal Extubation. |
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Wha Ja Kang, Byung Ik Rhee, Bong Jae Lee, Keon Sik Kim, Ok Young Shin, Kwang Il Shin |
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Department of Anesthesiology, Kyung Hee University Medical College, Seoul, Korea. |
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| Abstract |
BACKGROUND
Tracheal extubation, as well as intubation, causes hypertension and tachycardia. The aim of this study was to compare the effect of verapamil, lidocaine to lidocaine-verapamil combination in attenuating the cardiovascular changes following tracheal extubation and emergence from anesthesia.
METHODS
Eighty patients (ASA physical status 1) were randomly assigned to one of four groups (n=20 each) ; saline (control), 1 mg/kg lidocaine, 0.05 mg/kg verapamil and lidocaine-verapamil combination. These medication were given intravenously 2 min before tracheal extubation. Changes in blood pressure and heart rate were measured following tracheal extubation.
RESULTS
Lidocaine, verapamil and their combination all attenuated the changes of heart rate and blood pressure. The inhibitory effect on changes of heart rate and blood pressure were miximum in group of the combination of lidocaine and verapamil.
CONCLUSION
We conclude that the verapamil 0.05 mg/kg and lidocaine 1 mg/kg given iv concomitantly 2 min before tracheal extubation is a more effective prophylaxis than verapamil or lidocaine for attenuating the cardiovascular changes associated with tracheal extubation. |
| Key Words:
Blood pressure; Heart, pulse rate; Pharmacology, lidocaine, verapamil; Tracheal extubation, cardiovascular stimulation |
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