A Mechanical Pacemaker Is Implanted into a Patient with Irregular

question 38

Multiple Choice

A mechanical pacemaker is implanted into a patient with irregular heart beats. If the pacemaker has just one electrode that can stimulate just one spot on the heart, where should that electrode be placed?

• A) in the wall between the left ventricle and the right ventricle
• B) in the wall between the left atrium and the right atrium
• C) on the sinoatrial node
• D) on the atrioventricular node

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Definitions:

Nonsteroidal

Refers to medications or compounds not derived from steroids, often used to reduce inflammation, fever, or pain without the side effects of steroids.

Cortisol

A steroid hormone produced by the adrenal glands, often referred to as the "stress hormone" because its levels increase in response to stress and low blood-glucose concentration.

Immune Responses

The body's defensive reactions to foreign substances or pathogens, including the production of antibodies and other mechanisms of immunity.

Stress

A physical, mental, or emotional factor that causes bodily or mental tension, which can come from any event or thought that makes someone feel frustrated, angry, or nervous.