Question

An artificial pacemaker is implanted subcutaneously and connected to the heart 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

Answer 1

Answer: (C)

With irregularity in the heart rhythm

An artificial pacemaker is implanted subcutaneously and connected to the heart in patients with irregularity in the heart rhythm. It is implanted in the region of SA node which regulates the heartbeat. Sinoatrial node is known as the pacemaker of the heart. It helps in the generation and conduction of heartbeat. It is located in the walls of the right atria just below the opening of superior vena cava. The sympathetic nerves release the neurotransmitters and activate the SA node and generate electric impulse which is conducted as heartbeat throughout the heart.

So, the correct answer is option C.