What preoperative testing is indicated for a 58‑year‑old patient with hypertension and coronary artery disease?

Preoperative Testing for a 58-Year-Old with Hypertension and Coronary Artery Disease

Continue all antihypertensive medications through the perioperative period, obtain baseline vital signs within 2 hours of surgery, check preoperative troponin with repeat at 24-48 hours postoperatively, obtain complete blood count and renal function tests, and perform a preoperative ECG—but do NOT routinely perform stress testing or coronary revascularization unless the patient has active cardiac symptoms or poor functional capacity. 1

Blood Pressure Management

Preoperative Phase

• Continue all chronic antihypertensive medications throughout the perioperative period in most patients with hypertension undergoing elective noncardiac surgery 1
• Document vital signs (blood pressure and heart rate) and perform cardiac physical examination within 2 hours of surgery 1
• If blood pressure is severely uncontrolled (SBP ≥180 mmHg or DBP ≥110 mmHg) before the day of surgery AND the patient is undergoing elevated-risk surgery with cardiovascular risk factors, consider deferring surgery to reduce perioperative complications 1
• Exercise caution with antihypertensive continuation in patients ≥65 years old or those at high risk for perioperative hypotension based on surgery type and anesthetic plan 1

Intraoperative Phase

• Maintain mean arterial pressure (MAP) ≥60-65 mmHg or systolic blood pressure (SBP) ≥90 mmHg to reduce myocardial injury risk 1

Postoperative Phase

• Treat hypotension aggressively (MAP <60-65 or SBP <90 mmHg) to limit cardiovascular, cerebrovascular, renal events, and mortality 1
• Restart preoperative antihypertensive medications as soon as clinically reasonable to avoid postoperative hypertension complications 1

Cardiac Risk Assessment and Testing

Required Laboratory Tests

• Obtain preoperative troponin measurement in this intermediate-to-high-risk patient with known coronary artery disease 1
• Repeat troponin at 24 or 48 hours postoperatively to detect subclinical cardiac injury 1
• Check complete blood count and renal function preoperatively 1
• Obtain coagulation profile (prothrombin time, platelet count) 1

Functional Capacity Assessment

• Assess functional status using ability to climb two flights of stairs or the Duke Activity Status Index 1
• If the patient can achieve ≥4 metabolic equivalents (METs) without symptoms, stress testing is NOT indicated regardless of known coronary artery disease 2
• Examples of 4 METs: climbing one flight of stairs, walking on level ground at 4 mph, light housework 2

Electrocardiogram

• Obtain a preoperative ECG in this intermediate-to-high-risk patient 1

Stress Testing—When NOT to Perform

• Do NOT perform routine stress testing in asymptomatic patients with known coronary artery disease who have good functional capacity 2, 3
• Stress testing is rarely appropriate less than 2 years after percutaneous intervention or less than 5 years after coronary artery bypass grafting in patients without new symptoms 2
• Noninvasive cardiac tests are relatively poor at predicting perioperative risk 4

Stress Testing—When to Consider

• Only perform stress testing if:
  • The patient has active cardiac symptoms (unstable angina, recent myocardial infarction) 1, 3
  • Known coronary artery disease with poor functional capacity (<4 METs) 2, 3
  • The results would change management (i.e., patient is a candidate for and would benefit from coronary revascularization) 4
  • Undergoing vascular surgery with multiple cardiac risk factors 2, 5

Echocardiography

• Consider echocardiography within 3 months of surgery only if the patient has ongoing symptoms of heart failure 1

Coronary Revascularization Strategy

Prophylactic coronary revascularization before noncardiac surgery has a limited role and should NOT be performed routinely. 1, 4

Indications for Revascularization

• Perform coronary revascularization only if the patient has established indications that would warrant revascularization independent of the planned surgery 1, 3
• Active coronary syndromes: unstable angina, NSTEMI with GRACE score >140, cardiogenic shock, refractory angina, intractable arrhythmias, or hemodynamic instability 1
• Left main coronary artery disease requires careful individualized assessment weighing cumulative risks of both revascularization and noncardiac surgery 1

Evidence Against Routine Revascularization

• Landmark trials (ISCHEMIA, COURAGE, BARI-2D) demonstrate the importance of guideline-directed medical therapy and lack of benefit from routine revascularization in most patients with chronic coronary disease 1

Additional Risk Stratification

Frailty Assessment

• Perform frailty assessment with a validated tool if the patient is ≥70 years old 1

Venous Thromboembolism Prophylaxis

• Prescribe VTE prophylaxis prior to high-risk orthopedic or abdominal surgery 1

Common Pitfalls to Avoid

• Do not order stress testing reflexively in patients with known coronary artery disease—functional capacity assessment is more clinically relevant 2, 3
• Do not pursue coronary revascularization simply because the patient has known coronary disease and is scheduled for surgery—this does not improve outcomes 1, 4
• Do not withhold antihypertensive medications on the day of surgery unless there is documented hypotension or specific contraindications 1
• Do not delay surgery for extensive cardiac workup in patients with good functional capacity and no active symptoms 3, 4