Upon auscultating the chest of a 75-year-old patient who recently experienced a myocardial infarction (MI), the nurse hears an S3 and lung crackles. Because of these findings, the nurse should assess for what other condition?
1. heart failure
2. extension of the MI
3. renal failure
4. liver failure
Correct Answer: 1
S3 and lung crackles are indications of heart failure. Manifestations of MI extension include chest pain and a return of positive laboratory finding (CK-MB and troponin). Renal failure is a late complication of heart failure and is not manifested with an S3 and crackles. Liver failure is not manifested with an S3 and crackles.
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