Biology Forums - Study Force

A patient's poor oxygenation is thought to be related to decreased contractility. Which assessment findings would the nurse evaluate as supporting that decrease? (Select all that apply.)
1. The patient has a history of two myocardial infarctions.
2. There is ECG evidence of current myocardial ischemia.
3. Troponin levels indicate an acute myocardial infarction.
4. The nurse auscultated an S3 heart sound.
5. Crackles are present in lung bases bilaterally.

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