While auscultating a patient's heart sounds, a nurse detects a fourth heart sound (S4). The nurse understands that this finding possibly indicates:.
Pericarditis.
Arterial obstruction or aneurysm.
Forceful atrial contraction to overcome ventricular resistance.
An infectious valvular disorder.
The Correct Answer is C
Choice A rationale:
Pericarditis is an inflammation of the pericardium and would not directly cause an S4 heart sound.
Choice B rationale:
Arterial obstruction or aneurysm would cause changes in blood flow, but not specifically an S4 heart sound.
Choice C rationale:
An S4 heart sound is an extra sound that is heard late in diastole just before S1. It occurs due to resistance to blood flow in an enlarged ventricle, often due to forceful atrial contraction to overcome ventricular resistance.
Choice D rationale:
An infectious valvular disorder could cause a variety of heart sounds, but not specifically an S42.
So, the correct answer is C, after analyzing all choices.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
ST segment changes on an ECG are not typically associated with chronic constrictive pericarditis.
Choice B rationale:
Jugular venous distention (JVD) is a common sign of chronic constrictive pericarditis. If JVD is not present, it may indicate that the therapies are effective.
Choice C rationale:
While the sedimentation rate can indicate inflammation, it is not specific to chronic constrictive pericarditis.
Choice D rationale:
The presence of a paradoxical pulse is not typically associated with chronic constrictive pericarditis.
So, the correct answer is B, after analyzing all choices.
Correct Answer is A
Explanation
Choice A rationale:
An irregular pulse could indicate that myocarditis is affecting the heart’s electrical system, leading to an irregular heartbeat or arrhythmia. This could potentially affect the action of digoxin, a medication used to treat heart conditions, and therefore should be communicated to the healthcare provider.
Choice B rationale:
Leukocytosis, or a high white blood cell count, can be a sign of infection or inflammation, including myocarditis. However, it is not as specific as an irregular pulse in indicating a potential issue with the administration of digoxin.
Choice C rationale:
Generalized myalgia, or muscle pain, can be a symptom of myocarditis. However, it is not as directly related to the action of digoxin as an irregular pulse.
Choice D rationale:
Fatigue can be a symptom of myocarditis. However, it is not as directly related to the action of digoxin as an irregular pulse.
So, the correct answer is A, after analyzing all choices.
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