A nurse is teaching several newly licensed nurses about cardiac valve replacement. Which of the following should the nurse include in the teaching?

The aortic and mitral valves are the most commonly replaced valves.

Mitral valve insufficiency occurs during the diastolic phase of the cardiac cycle.

Inadequate closure of the tricuspid valve causes overload in the left ventricle.

Aortic stenosis increases right ventricular systolic pressure and decreases afterload.

Answer and Explanation

The Correct Answer is A

A. The aortic and mitral valves are the most commonly replaced valves: This statement is accurate. The aortic and mitral valves are indeed the most commonly replaced valves in cardiac valve replacement surgeries. Aortic valve replacement is commonly performed for conditions such as aortic stenosis or regurgitation, while mitral valve replacement is often indicated for mitral regurgitation or stenosis.

B. Mitral valve insufficiency occurs during the diastolic phase of the cardiac cycle: This statement is incorrect. Mitral valve insufficiency, also known as mitral regurgitation, occurs during the systolic phase of the cardiac cycle. It involves the backflow of blood from the left ventricle into the left atrium during ventricular systole, leading to volume overload of the left atrium and potentially causing symptoms such as dyspnea and fatigue.

C. Inadequate closure of the tricuspid valve causes overload in the left ventricle: This statement is incorrect. Inadequate closure of the tricuspid valve leads to regurgitation of blood from the right ventricle back into the right atrium during ventricular systole. This condition, known as tricuspid regurgitation, causes volume overload in the right atrium and ventricle, rather than overload in the left ventricle.

D. Aortic stenosis increases right ventricular systolic pressure and decreases afterload: This statement is partially correct. Aortic stenosis indeed increases left ventricular systolic pressure and decreases afterload, not right ventricular pressure. The increased afterload on the left ventricle can lead to left ventricular hypertrophy and eventually heart failure. However, aortic stenosis does not directly affect right ventricular systolic pressure.

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Correct Answer is C

Explanation

Answer: C

Rationale:

A) "I'm glad that I can work remotely from my computer. Prolonged use of a computer can strain the eyes, potentially interfering with the healing process after a retinal reattachment procedure. Clients are generally advised to limit screen time during recovery.

B) "I can't wait to be able to take a bath. Submerging the face in water, as during a bath, is discouraged postoperatively due to the risk of introducing bacteria into the eye and delaying healing. Clients are advised to stick to showers and avoid getting the affected eye wet.

C) "I get bored only being able to watch television. Watching television is usually permissible following retinal surgery, as it does not strain the eye excessively. This statement aligns with typical postoperative instructions.

D) "I will be relieved once I can drive myself to the store." Driving is contraindicated during the recovery phase due to potential visual disturbances and the need for the eye to heal properly. Clients are typically instructed to avoid driving until cleared by their ophthalmologist.

A. A client who has coronary artery disease (CAD) and Bell's palsy B. A client who has coronary artery disease (CAD) and chronic diverticulitis C. A client who has coronary artery disease (CAD) and chronic allergies D. A client who has coronary artery disease (CAD) and chronic obstructive pulmonary disease (COPD)

Correct Answer is D

Explanation

A. A client who has coronary artery disease (CAD) and Bell's palsy: Bell's palsy, a condition characterized by sudden, temporary weakness or paralysis of the facial muscles, does not directly increase the risk of complications following CABG surgery. While Bell's palsy may affect facial muscle function, it typically does not impact respiratory function or cardiovascular stability during surgery.

B. A client who has coronary artery disease (CAD) and chronic diverticulitis: Chronic diverticulitis, inflammation or infection of the diverticula in the colon, is not directly related to increased risk for complications following CABG surgery. While diverticulitis may require medical management and dietary modifications, it does not typically affect cardiovascular or respiratory function during surgery.

C. A client who has coronary artery disease (CAD) and chronic allergies: Chronic allergies, while they may cause respiratory symptoms such as nasal congestion or rhinitis, are not typically associated with increased risk for complications following CABG surgery. Allergies alone are unlikely to significantly impact cardiovascular stability or respiratory function during surgery compared to conditions such as COPD.

D. A client who has coronary artery disease (CAD) and chronic obstructive pulmonary disease (COPD): A client with CAD and COPD is at the highest risk for complications following coronary artery bypass graft (CABG) surgery. COPD is a chronic respiratory condition characterized by airflow limitation and increased airway resistance, often accompanied by emphysema and chronic bronchitis. These respiratory impairments can significantly impact the client's ability to tolerate anesthesia, mechanical ventilation, and postoperative respiratory function. COPD increases the risk of complications such as atelectasis, pneumonia, exacerbation of COPD, and respiratory failure following CABG surgery.

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