What is the result of hypertrophy and remodeling in the context of heart failure
Increased oxygen supply and improved cardiac function, which results in lower ejection fraction.
Hypertrophy and remodeling in heart failure result in poor contractility and increased oxygen demand as the hypertrophic muscle become inefficient over time.
Reduced workload on the heart and improved cardiac output, leading to resolution of heart failure.
Sustained improved contractility and decreased oxygen demand
The Correct Answer is B
A. Hypertrophy increases oxygen demand but does not improve cardiac function; it typically worsens ejection fraction.
B. Hypertrophy and remodeling initially help compensate but over time lead to inefficient heart muscle with poor contractility and increased oxygen demand, contributing to worsening heart failure.
C. Hypertrophy and remodeling increase, not reduce, workload, and do not resolve heart failure.
D. Contractility often declines and oxygen demand increases, contrary to this statement.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Encephalitis is most often caused by viral infections, not exclusively bacterial.
B. Encephalitis is inflammation of the brain tissue, typically due to infection or autoimmune processes.
C. Muscle pain may occur but is not the primary symptom; neurological symptoms like headache, fever, confusion, and seizures are more common.
D. Encephalitis can be severe and life-threatening, requiring prompt medical treatment.
Correct Answer is D
Explanation
A. Hydrocephalus is not a normal variation — it is a neurological disorder that requires medical attention.
B. Hydrocephalus is caused by an increase, not a decrease, in cerebrospinal fluid (CSF) in the brain's ventricles.
C. While inflammation (like meningitis) can lead to hydrocephalus, the condition itself is not defined by brain tissue inflammation.
D. Hydrocephalus is characterized by an abnormal buildup of CSF in the brain’s ventricles, leading to ventricular enlargement and increased intracranial pressure. This can be due to obstruction, poor absorption, or overproduction of CSF.
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