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.
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Related Questions
Correct Answer is D
Explanation
A. Creatine kinase (CK) test: While creatine kinase isoenzymes, including CK-MB, can be elevated following myocardial infarction (MI), they are not specific to cardiac muscle injury. CK is found in various tissues throughout the body, so elevated levels can also indicate damage to skeletal muscle or brain tissue, among other sources.
B. Creatine kinase-myocardial band (CK-MB) test: CK-MB is a cardiac-specific isoform of creatine kinase, and elevated levels can indicate myocardial injury, particularly in the context of an acute MI. However, troponin T is a more sensitive and specific marker for myocardial injury.
C. Brain natriuretic peptide (BNP) test: Brain natriuretic peptide is primarily used in the diagnosis and management of heart failure. While elevated BNP levels can indicate heart muscle strain or stress, they are not specific markers for acute myocardial infarction or early injury to the cardiac muscle.
D. Troponin T test: This is the correct answer. Troponin T is a highly specific marker for cardiac muscle injury. Elevated troponin levels can be detected within hours of myocardial infarction and persist for several days, making it an essential tool in the diagnosis of acute coronary syndromes, including myocardial infarction. Troponin T is considered one of the gold standard biomarkers for detecting early injury to the cardiac muscle.
Correct Answer is A
Explanation
A. Changes to social cognition and challenges to inhibitory control: Neurologic injuries such as increased intracranial pressure can lead to changes in social cognition, including difficulties in understanding social cues, interpreting emotions, and maintaining appropriate social interactions. Additionally, inhibitory control may be impaired, leading to impulsivity and disinhibition in behavior.
B. Improved mood stability and improved temper control: Neurologic injuries are more likely to result in mood instability and difficulties with temper control rather than improvement in these areas. Changes in mood, including irritability, anxiety, depression, and emotional lability, are common psychosocial consequences of neurologic injuries.
C. Improved rehabilitation outcomes and temporary behavior changes: While rehabilitation efforts may lead to improvement in functional abilities over time, neurologic injuries often result in persistent psychosocial challenges rather than improved outcomes. Temporary behavior changes may occur during the recovery process, but individuals may continue to experience long-term psychosocial sequelae.
D. Sense of purpose, improved motivation, and stable relationships: Neurologic injuries can significantly impact an individual's sense of purpose, motivation, and relationships. Clients may struggle to find meaning and motivation in their lives following a neurologic injury, and relationships may be strained due to changes in behavior, cognition, and communication.
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