Why the study?
Does calcium chloride administration prior to verapamil prevent verapamil-induced hypotension in patients with SVT and low blood pressure?
Does calcium chloride administration prior to verapamil prevent verapamil-induced hypotension in patients with SVT and low blood pressure?
Pre-treatment with calcium chloride may prevent verapamil-induced hypotension in patients with SVT and borderline or low blood pressure.
Should not change practice for calcium pretreatment before verapamil in hypotensive SVT; case report leaves efficacy open to randomized trials.
Verapamil has been shown to be effective in the management of supraventricular tachycardia (SVT). However, the utility of verapamil may be limited because of adverse effects, specifically hypotension. Several clinical observations have shown that the intravenous administration of calcium is effective in reversing the myocardial depressant effects of verapamil. We report the case of a patient with SVT and a systolic blood pressure of 80 mm Hg in which the administration of calcium chloride prior to that of verapamil may have negated verapamil-induced hypotension.
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Stringer et al. (1988) studied this question.
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