Correct Answer: D

Rationale: Although physical activity restrictions are commonly recommended for younger clients with hypertrophic cardiomyopathy (HCM) to reduce the risk of sudden cardiac death, this may not be the best option for a 72-year-old client. Older adults can still benefit from regular physical activity to maintain overall health and mobility. It is important to individualize the exercise recommendations based on the client's overall health status, functional capacity, and specific considerations related to their condition. In this case, the healthcare team would likely focus on other treatment options such as beta-blocker or calcium channel blocker administration, and consider the potential benefits of defibrillator implantation for the older client with HCM.

Correct Answer: D

Rationale: Torsades de Pointes is a specific type of ventricular tachycardia characterized by a distinctive twisting pattern on an ECG. It is often associated with a prolonged QT interval and can potentially lead to a life-threatening arrhythmia known as ventricular fibrillation. Sinus tachycardia, atrial flutter, and junctional escape rhythms are not forms of ventricular tachycardia.

Correct Answer: C

Rationale: Progressive shock leads to a mismatch between oxygen demand and supply, causing a shift from aerobic to anaerobic metabolism in cells. As oxygen delivery decreases due to factors such as decreased blood volume or cardiac output, cells are unable to meet their energy needs through aerobic metabolism. This results in the conversion of pyruvate to lactate through anaerobic glycolysis, leading to lactic acidosis and further cellular dysfunction. Recognizing this shift in metabolism is crucial for the nurse to intervene promptly to restore tissue perfusion and prevent further organ damage in the client in hemorrhagic shock.

Correct Answer: B

Rationale: In a client with left-sided heart failure, lying on the left side can help reduce the workload on the heart by promoting better venous return and reducing preload. This position can help decrease the amount of blood in the pulmonary circulation and improve cardiac output. Placing one pillow under the head can provide comfort and proper alignment of the airway, allowing for easier breathing. It is important to avoid excessive elevation of the head as it could increase pressure on the heart and impede circulatory function. This position can also help prevent complications such as pulmonary congestion and fluid accumulation in the lungs.

Correct Answer: D

Rationale: Although physical activity restrictions are commonly recommended for younger clients with hypertrophic cardiomyopathy (HCM) to reduce the risk of sudden cardiac death, this may not be the best option for a 72-year-old client. Older adults can still benefit from regular physical activity to maintain overall health and mobility. It is important to individualize the exercise recommendations based on the client's overall health status, functional capacity, and specific considerations related to their condition. In this case, the healthcare team would likely focus on other treatment options such as beta-blocker or calcium channel blocker administration, and consider the potential benefits of defibrillator implantation for the older client with HCM.