A disproportionate thickening of the interventricular septum is the hallmark of which form of cardiomyopathy?
Dilated
Dystrophic
Hypertrophic
Restrictive
The Correct Answer is C
A. Dilated: Dilated cardiomyopathy is characterized by an enlarged heart with decreased contractility and thinning of the ventricular walls. It does not involve disproportionate thickening of the interventricular septum.
B. Dystrophic: Dystrophic cardiomyopathy refers to muscle degeneration due to underlying muscular dystrophies. It does not specifically describe the thickening of the interventricular septum and is not a primary classification of cardiomyopathy.
C. Hypertrophic: Hypertrophic cardiomyopathy is marked by a disproportionate thickening of the interventricular septum, leading to impaired diastolic filling and potential obstruction of blood flow out of the left ventricle. This characteristic thickening is a hallmark of this condition.
D. Restrictive: Restrictive cardiomyopathy involves stiffening of the heart muscle, which impairs filling during diastole but does not specifically feature disproportionate thickening of the interventricular septum. Instead, it may present with normal or slightly thickened walls but with decreased compliance.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Controlling the blood pressure: Controlling blood pressure is crucial for reducing the risk of developing coronary artery disease (CAD). Even with a normal lipid panel, hypertension can significantly contribute to cardiovascular risk, and managing blood pressure helps protect against the development of CAD.
B. Moderate alcohol use: While moderate alcohol consumption may have some potential benefits for heart health, it is not a primary risk factor reduction strategy. The focus should be on more impactful lifestyle changes, particularly for individuals with normal lipid levels.
C. Eating a low-fat diet: Although a balanced diet is important for overall health, a low-fat diet specifically is not necessary for everyone, especially those with normal lipid levels. The emphasis should be on a heart-healthy diet that includes healthy fats, such as those from fish, nuts, and olive oil, rather than simply reducing fat intake.
D. Avoiding air pollution: Avoiding air pollution can have health benefits, but it is not a primary strategy for individuals seeking to reduce the risk of CAD. Addressing more direct risk factors, such as blood pressure management, is more critical in this context.
Correct Answer is A
Explanation
A. Assist with a chest tube insertion: A gunshot wound to the chest with a one-way valve pleural rupture indicates a tension pneumothorax, a life-threatening condition. Air enters the pleural space with each breath but cannot escape, leading to increased intrathoracic pressure, lung collapse, and mediastinal shift, which can compromise venous return and cardiac output. Immediate chest tube insertion or needle decompression is necessary to relieve pressure and restore normal lung function.
B. Give the patient low-flow oxygen: Oxygen therapy may help improve oxygenation, but it does not address the underlying issue of trapped air causing intrathoracic pressure buildup. Without intervention to release the trapped air, respiratory distress and cardiovascular collapse can occur.
C. Assess for clubbing of fingernails: Clubbing is a sign of chronic hypoxia seen in long-term respiratory diseases but is not relevant in the acute management of a tension pneumothorax. The priority is to relieve the trapped air and restore normal lung expansion.
D. Draw arterial gases: While arterial blood gases can help assess oxygenation and ventilation status, they do not treat the underlying tension pneumothorax. Immediate decompression is required before diagnostic tests to prevent rapid deterioration and potential cardiac arrest.
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