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

Question

Quizplus · Accepted Answer

An ectopic focus is an area of the heart that initiates an electrical impulse outside of the sinoatrial (SA) node, which is the natural pacemaker of the heart. This can result in premature contractions, known as ectopic beats, as well as potentially harmful arrhythmias.

Which of the Following Correctly Describes Ectopic Focus