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Korean J Crit Care Med. 1997 Jun;12(1):81-84. Korean. Case Report.
Kwon EJ , Kong MH , Lim SH , Choi JH , Lee MK , Yoon SM , Choi YS .
Department of Anesthesiology, College of Medicine, Korea University, Seoul, Korea.

Combination therapy of beta-blocker and a calcium channel blocker is not recommened because their additive effect on the myocardium and the atrioventricular node may precipitate heart block in susceptible patients. We experienced a 68 years old female patient who had paroxysmal supraventricular tachycardia that was treated with verapamil and esmolol. She had been taking verapamil for 2 years because of her paroxysmal supraventricular tachycardia. She was planned for left ureteronephrectomy due to left ureteral tumor. After epidural catheterization for the postoperative pain control, she was anesthetized with isoflurane and vecuronium. During central venous catheterization, SVT (H.R. from 98 beats per minute to 190 BPM) was suddenly developed with hypotension (B.P. from 120/65 mmHg to 75/42 mmHg) when guide wire was introduced. We treated her with combination therapy of verapamil 7.5 mg and esmolol 18 mg under the monitoring of blood pressure, electrocardiogram, end-tidal CO2 tension, central venous pressure and pulse oximeter. After 20 minutes of vigorous treatment, her heart rate and blood pressure returned to a normal range.

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