Chapter 20, Problem 31RQ

Summary Introduction

To determine:

The effect of the drug Verapamil, on Karen’s stroke volume.

Introduction:

The stroke volume denoted as SV refers to the amount of blood that is pumped out of a ventricle at the time of every contraction. Contractility is defined as the amount of force that is formed at the time of contraction, at preload. Contractility, under normal conditions can be altered by the circulating hormones and autonomic innervations or drugs. Verapamil is one of the drugs that block the calcium ion channels in the cardiac cells.