Rheumatic Fever (RF) Is an Inflammatory Disease Following Infection from Streptococcus

Multiple Choice

Rheumatic fever (RF) is an inflammatory disease following infection from Streptococcus bacteria. It mainly affects children between ages 5 and 15 and occurs approximately 20 days after strep throat or scarlet fever. Severe RF can result in degeneration of the heart valves. Based on this scenario, RF is most likely to cause

A) ʺbackslideʺ of blood from a ventricle to an atrium.
B) faster heartbeat.
C) slower heartbeat.
D) uncoordinated contraction of ventricles.