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:
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.
Correct Answer is D
Explanation
Choice A rationale:
While aspirin is often given to patients with suspected myocardial infarction, asking if the patient took aspirin does not help determine the timing of the onset of symptoms.
Choice B rationale:
Knowing the patient’s allergies is important for medication safety, but it does not help determine eligibility for thrombolytic therapy.
Choice C rationale:
Rating the pain on a scale helps assess the severity of the pain, but it does not provide information about the timing of the onset of symptoms.
Choice D rationale:
The time of pain onset is crucial in determining eligibility for thrombolytic therapy. Thrombolytic therapy is most effective when given within a certain time frame from the onset of symptoms.
So, the correct answer is D, after analyzing all choices.
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