A nurse is assisting with teaching a newly licensed nurse about heart sounds. Which of the following sounds is heard when the aortic and pulmonic valves close?
S1
S2
S3
S4
The Correct Answer is B
Choice A reason : S1 represents the sound made by the closure of the atrioventricular valves (mitral and tricuspid valves) and is not the sound associated with the closure of the aortic and pulmonic valves.
Choice B reason : S2 is the sound heard when the aortic and pulmonic valves close. It is often described as a "dub" and occurs at the end of ventricular systole.
Choice C reason : S3 is a rare extra heart sound that follows S2 and usually indicates an increase in left ventricular filling pressure, which can be found in conditions such as heart failure.
Choice D reason : S4 is another extra heart sound that occurs just before S1. It is typically associated with a stiff or hypertrophic ventricle and is not related to the closure of the aortic and pulmonic valves
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason : Applying ice to the extremity is not a standard intervention for DVT. Ice is typically used to reduce inflammation and pain, but in the case of DVT, the priority is to prevent the clot from growing and embolizing. The use of warmth, not cold, may be recommended to help reduce discomfort and swelling.
Choice B reason : Administering vasodilating medications is not a typical intervention for DVT. Vasodilators are used to widen blood vessels and improve blood flow, but they do not address the risk of clot formation or embolization associated with DVT. The mainstay of medical treatment for DVT is anticoagulant therapy, which helps to prevent further clotting.
Choice C reason : Restricting oral fluids is not an intervention for DVT. Adequate hydration is important in the management of DVT as it can help to prevent blood from thickening and reduce the risk of further clot formation. There is no indication to restrict fluids unless there is another underlying condition that requires it.
Choice D reason : Monitoring platelet levels is an important intervention in the care of a client with DVT, especially if they are receiving anticoagulant therapy. Anticoagulants can affect platelet function and count, and monitoring is necessary to ensure safe levels and prevent complications such as bleeding or thrombocytopenia.
Correct Answer is D
Explanation
Choice A reason : The triglyceride level of 130 mg/dL is within the normal range, which is less than 150 mg/dL for adults. Therefore, this result does not place the client at risk for peripheral arterial disease.
Choice B reason : An HDL level of 84 mg/dL is considered good as it is higher than the minimum recommended level of 40 mg/dL for males and 50 mg/dL for females. Higher levels of HDL are protective against heart disease.
Choice C reason : A blood glucose level of 92 mg/dL is within the normal fasting range of 70 to 99 mg/dL. This indicates that the client does not have diabetes, which is a risk factor for peripheral arterial disease.
Choice D reason : An LDL level of 172 mg/dL is considered high since the optimal level for LDL is less than 100 mg/dL. High levels of LDL cholesterol can lead to atherosclerosis, increasing the risk for peripheral arterial disease.
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