during svt , the effects of intravenous adenosine ( 37.5 to 150 micrograms/kg ) , which increases potassium current ( ik ) in supraventricular tissue and hyperpolarizes membrane potential toward ek ( -90 mv ) , and the response to slow-inward channel blockade with verapamil ( 0.10 to 0.20 mg/kg iv ) were evaluated .
C0039240
svt
C0042523
verapamil