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:
Checking the pulse rate before taking nitroglycerin is not necessary.
Choice B rationale:
Sitting down before taking nitroglycerin can prevent dizziness and fainting, which are potential side effects of nitroglycerin.
Choice C rationale:
There is no need to remove the nitroglycerin patch before taking sublingual nitroglycerin.
Choice D rationale:
The nitroglycerin patch should not be used to treat acute chest pain.
So, the correct answer is B, after analyzing all choices.
Correct Answer is D
Explanation
Choice A rationale:
While a history of heart attack indicates a general risk for heart disease, it is not specifically associated with an increased risk for infective endocarditis.
Choice B rationale:
Immunizations do not typically increase the risk for infective endocarditis.
Choice C rationale:
Family history of endocarditis does not necessarily increase the risk for infective endocarditis.
Choice D rationale:
Dental work can introduce bacteria into the bloodstream, which can lead to infective endocarditis, especially in individuals with prosthetic heart valves.
So, the correct answer is D, after analyzing all choices.
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