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 B
Explanation
Choice A rationale:
A patient who had a myocardial infarction (MI) 4 days ago and is anxious about today’s planned discharge would need reassurance and education, but it’s not an immediate concern.
Choice B rationale:
A patient with unstable angina who has just returned after a percutaneous coronary intervention (PCI) is at risk for hemorrhage from the arterial access site. Immediate assessment of blood pressure, pulses, and the access site is required.
Choice C rationale:
A patient with variant angina who is scheduled to receive nifedipine (Procardia) would need monitoring, but it’s not the most urgent.
Choice D rationale:
A patient with pericarditis complaining of sharp, stabbing chest pain would need evaluation, but the risk of complications is less immediate than for Choice B1.
So, the correct answer is B, after analyzing all choices.
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