An artificial pacemaker is implanted subcutaneously and connected the in patients
A. Having 90% blockage of the three main coronary arteries
B. Having a very high blood pressure
C. With irregularity in the heart rhythm
D. Suffering from arteriosclerosis

Hint:-Heart has its own internal electrical system that regulates your heartbeats rate and rhythm. Anelectrical signal travels from the top of your heart to the bottom for each pulse. It causes the heart to contract and pumps blood as the signal travels. In a group of cells called the sinus node sinoatrial (SA) node, each electrical signal usually begins and spreads from the top of the heart to the bottom.

Complete step-by-step solution:-An artificial pacemaker is an electronic device that is implanted or mounted in the chest or abdomen for heart rate and rhythm control.
-When the heart does not beat normally, it gives electrical stimulation to the heart.
-It runs on batteries and has small, long cables connecting it to the core.
-To prompt the heart to beat at a regular rate, this system uses electrical pulses.
-For treating arrhythmias, pacemakers are used.
-Arrhythmias are concerns with the pulse rate or rhythm.
-The heart can beat too quickly, too slowly, or with an irregular rhythm in arrhythmia.
-Tachycardia is called a pulse that's too fast.
-Bradycardia is called a pulse that's too low.
-To treat a blockage in the heart we need to perform bypass surgery.
-The most suitable remedy for atherosclerosis is also lifestyle improvements, such as
maintaining a balanced diet and exercising.
-So, the correct answer is, option C

Note:-
Pacemakers have one to three wires, each of which is positioned in various heart chambers.
-The wires in a single-chamber pacemaker bring signals from the generator to the right
ventricle (your heart#39;s lower right chamber).
-Pulses are carried from the generator to the right atrium and the right ventricle by the wires
of a dual-chamber pacemaker. The pulses help regulate the timing of the contractions of
these two chambers.