A nurse is teaching a client who has dilated cardiomyopathy (DCM) about this condition. Which of the following statements by the nurse should be included in the teaching?
"Your heart condition is caused by excessive stretching of the ventricles."
"Your heart condition is caused when the ventricular tissue becomes fibrous and fatty:'
"Your heart condition is caused from stiffening of the walls of the ventricles."
"Your heart condition is caused by thickening of the ventricular walls and septum."
The Correct Answer is A
A. "Your heart condition is caused by excessive stretching of the ventricles": Dilated cardiomyopathy (DCM) is characterized by the dilation or enlargement of the heart's chambers, particularly the ventricles. This dilation results in weakened myocardial contraction and impaired systolic function. The primary cause of DCM is often idiopathic (unknown), but it can also be secondary to various factors such as genetics, infections, toxins, or systemic diseases. The statement correctly identifies the pathophysiological basis of DCM as excessive stretching or dilation of the ventricles, leading to impaired cardiac function.
B. "Your heart condition is caused when the ventricular tissue becomes fibrous and fatty": This statement is incorrect. Fibrous and fatty changes in ventricular tissue are characteristic of another type of cardiomyopathy known as hypertrophic cardiomyopathy (HCM), not dilated cardiomyopathy (DCM). In DCM, the primary abnormality is dilation of the heart chambers rather than fibrous and fatty changes in the myocardium.
C. "Your heart condition is caused from stiffening of the walls of the ventricles": This statement describes restrictive cardiomyopathy (RCM), not dilated cardiomyopathy (DCM). In restrictive cardiomyopathy, the ventricular walls become stiff and rigid, impairing diastolic filling and ventricular relaxation. However, in DCM, the primary abnormality is dilation or enlargement of the ventricles rather than stiffening of the ventricular walls.
D. "Your heart condition is caused by thickening of the ventricular walls and septum": This statement describes hypertrophic cardiomyopathy (HCM), not dilated cardiomyopathy (DCM). In HCM, there is abnormal thickening of the ventricular walls and septum, leading to reduced chamber size and impaired diastolic filling. However, in DCM, the primary abnormality is dilation or enlargement of the ventricles rather than thickening of the ventricular walls.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Severe myopia: Severe myopia refers to nearsightedness and is not typically associated with Meniere's disease. Myopia affects vision but is unrelated to the characteristic symptoms of Meniere's disease.
B. Vertigo: Vertigo is a hallmark symptom of Meniere's disease. It is characterized by a sensation of spinning or dizziness, often accompanied by nausea, vomiting, and imbalance. Vertigo episodes in Meniere's disease can be severe and debilitating, significantly impacting the individual's quality of life.
C. Anosmia: Anosmia refers to a loss of sense of smell and is not a typical manifestation of Meniere's disease. Meniere's disease primarily affects the inner ear and is characterized by symptoms related to vestibular dysfunction, such as vertigo, rather than olfactory disturbances.
D. Photopsia: Photopsia refers to the perception of flashing lights or visual disturbances and is not a characteristic manifestation of Meniere's disease. Visual disturbances may occur in certain conditions affecting the eyes or visual pathways but are not typically associated with Meniere's disease, which primarily affects the inner ear and vestibular system.
Correct Answer is A
Explanation
A. Hypovolemic shock: Hypovolemic shock occurs due to a significant decrease in circulating blood volume, leading to inadequate tissue perfusion. Blood loss, such as that experienced by the client in the scenario, is a common cause of hypovolemic shock. The decrease in blood pressure observed over time is consistent with the compensatory mechanisms of hypovolemic shock, where the body attempts to maintain perfusion to vital organs despite decreased blood volume.
B. Septic shock: Septic shock results from a systemic inflammatory response to infection, leading to vasodilation, increased capillary permeability, and maldistribution of blood flow. While infection can lead to hypovolemia in some cases, the scenario does not provide evidence of infection or systemic inflammatory response as the cause of shock.
C. Obstructive shock: Obstructive shock occurs when there is obstruction to blood flow within the cardiovascular system, such as in cases of pulmonary embolism, cardiac tamponade, or tension pneumothorax. There is no evidence in the scenario to suggest an obstruction to blood flow as the cause of the client's shock.
D. Neurogenic shock: Neurogenic shock results from loss of sympathetic tone leading to vasodilation and relative hypovolemia. It is often associated with spinal cord injury or severe head injury. While neurogenic shock can lead to hypotension, the scenario does not indicate any neurological injury or insult as the cause of the client's shock.
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