Which of these statements describes ectopic focus
A)the place where an abnormally excitable area of the heart initiates a premature action potential
B)the place where all the electrical impulses of the heart normally terminate
C)the place where an ECG lead is attached on the outside of the chest
D)the place where a heart valve is attached

Question

Quizplus · Accepted Answer

Ectopic focus refers to the abnormal excitable area of the heart that initiates a premature action potential, which can result in an irregular heartbeat known as arrhythmia. Option B describes the apex of the heart where the electrical impulses end. Option C describes the placement of an ECG lead on the chest, and option D describes where a heart valve attaches.

Which of These Statements Describes Ectopic Focus