Which of the following assessment findings would indicate to the nurse that the patient has an altered blood supply to the right coronary artery affecting the posterior wall of the myocardium?
1. Hyperacute T waves in aVF
2. CK-MB of 4 percent
3. cTnT of 0.0 mcg/L
4. ST segment depression in V1 and V2
4
Rationale: ST segment depression in V1 and V2 is seen when there is an altered blood supply to the right coronary artery that supplies the posterior wall of the heart. Hyperacute T waves are seen when there is an altered blood supply to the left circumflex artery that supplies the inferior wall of the heart. A CK-MB level of 4% is within normal limits. A troponin level (cTnT) of 0.00 mcg/L is a normal result.
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