A client is scheduled for coronary artery bypass graft (CABG) surgery. Which assessment finding would indicate the most urgent need for intervention before the procedure?

Coronary artery bypass graft (CABG) surgery is performed to restore adequate myocardial blood flow in clients with significant coronary artery disease. Preoperative assessment focuses on identifying unstable cardiac conditions that may increase perioperative risk. Signs of acute myocardial ischemia require immediate intervention because they indicate ongoing cardiac tissue hypoxia. Stabilizing the client before surgery is essential to reduce the risk of intraoperative complications and myocardial damage. Rationale: A. The client is scheduled to receive preoperative antibiotics is a routine perioperative measure and does not indicate an urgent problem. Antibiotics are commonly administered before CABG surgery to reduce the risk of postoperative infection, particularly mediastinitis. This is standard care and not a condition requiring immediate intervention. B. The client has a history of hypertension is a common comorbidity in clients undergoing CABG surgery and is expected. While blood pressure must be controlled preoperatively, a history of hypertension alone does not represent an acute or urgent finding. Management typically involves continued medication and monitoring rather than emergency intervention. C. The client reports severe chest pain and diaphoresis is the most urgent finding because it suggests ongoing myocardial ischemia or possible acute coronary syndrome. These symptoms indicate inadequate oxygen supply to the heart muscle and require immediate evaluation and stabilization before surgery. Proceeding with CABG without addressing active ischemia increases the risk of perioperative myocardial infarction. D. The client expresses anxiety about the surgery is a common and expected psychological response. Preoperative anxiety can be addressed through education, reassurance, and emotional support. While important for holistic care, it does not represent an immediate physiological threat requiring urgent intervention compared to active cardiac ischemia.