A nurse is auscultating a client's heart sounds and hears an extra heart sound before what should be considered the first heart sound S1. The nurse should document this finding as which of the following heart sounds?
A friction rub
A split second heart sound S₂
The third heart sound (S3)
The fourth heart sound (S4)
The Correct Answer is D
A. A friction rub: A friction rub is a sound caused by the rubbing of inflamed pericardial layers and is not classified as a heart sound like S1 or S2. It is unrelated to the sequence of heart sounds.
B. A split second heart sound S₂: A split S₂ occurs during the closure of the aortic and pulmonary valves and is heard after S1, not before.
C. The third heart sound (S3): S3, or the ventricular gallop, occurs shortly after S2 during early diastole and indicates rapid ventricular filling. It is not heard before S1.
D. The fourth heart sound (S4): S4, known as the "atrial gallop," occurs just before S1 during atrial contraction. It is associated with a stiff or hypertrophied ventricle and is often indicative of underlying heart disease, especially in older adults.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Correct answer: D
A.Elevate the head of the bed 45":Do not elevate the head of the bed more than 15 degrees.Elevating the head of the bed can increase the risk of bleeding from the insertion site.
B.Keep the affected leg slightly flexed: The affected leg should be kept straight to prevent movement at the insertion site, which can cause bleeding
C. Keep the client NPO for 4 hr: There is typically no need to keep the client NPO for an extended period after a cardiac catheterization. However, individual protocols may vary, and the nurse should follow the specific instructions provided by the healthcare provider.
D.Have the client lie flat in bed: After a cardiac catheterization, it is important to keep the client lying flat to prevent bleeding or hematoma formation at the catheter insertion site. This position helps to maintain pressure on the insertion site, particularly if the catheter was inserted through the femoral artery.
Correct Answer is D
Explanation
A. Troponin is a lipid whose levels reflect the risk for coronary artery disease: This statement is incorrect. Troponin is not a lipid, and its levels do not reflect the risk for coronary artery disease. Troponin is a protein associated with muscle tissue.
B. Troponin is an enzyme that indicates damage to brain, heart, and skeletal muscle tissues: While troponin indicates damage to muscle tissues, it is specifically associated with cardiac muscle, not brain or skeletal muscle tissues.
C. Troponin is a protein that helps transport oxygen throughout the body: This statement is incorrect. While proteins in the blood may contribute to oxygen transport, troponin's primary role is in muscle contraction, particularly in the heart.
D. Troponin is a heart muscle protein that appears in the bloodstream when there is damage to the heart: This is the correct answer. Troponin is a protein found in cardiac muscle cells, and when there is damage to the heart, such as during a myocardial infarction, troponin is released into the bloodstream. Elevated troponin levels in the blood are indicative of myocardial injury or infarction.
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