In a female patient with recent femoral deep vein thrombosis who is on apixaban (apixaban) for coronary stents, is a blood pressure of 172 mm Hg systolic and 61 mm Hg diastolic during a treadmill stress test an abnormal hypertensive response?

Blood Pressure Response Assessment

A systolic blood pressure of 172 mmHg during a treadmill stress test is within normal limits for a female patient and does not represent an abnormal hypertensive response. The diastolic pressure of 61 mmHg is also normal, as diastolic pressure typically remains stable or decreases slightly during exercise.

Normal Blood Pressure Response During Exercise

According to the American Heart Association exercise testing standards, an exaggerated (abnormal) systolic blood pressure response is defined as:

• ≥210 mmHg for men
• ≥190 mmHg for women 1

Your patient's systolic BP of 172 mmHg falls well below the 190 mmHg threshold for women, making this a normal physiological response to exercise stress.

Expected Hemodynamic Changes

During progressive exercise testing:

• Systolic blood pressure normally rises approximately 10 mmHg per MET of work performed 1
• Diastolic pressure typically remains stable or decreases moderately due to peripheral vasodilation 1
• The diastolic reading of 61 mmHg is entirely normal; some healthy individuals may even have diastolic sounds audible down to 0 mmHg during exercise 1

What Would Be Abnormal

The following findings would warrant concern 1:

• Exercise-induced hypotension: Systolic BP decline below resting value or a drop ≥10 mmHg after initial rise
• Excessive diastolic rise: Increase >10 mmHg above resting value or absolute value ≥90 mmHg
• Extreme hypertensive response: Systolic >250 mmHg or diastolic >115 mmHg (relative indication for test termination)

Clinical Context Considerations

The patient's anticoagulation status with apixaban for DVT and coronary stents does not alter the interpretation of blood pressure response during stress testing. The BP response should be evaluated independently of anticoagulation therapy, as apixaban does not directly affect cardiovascular hemodynamics during exercise 2.

Key Takeaway

This BP response (172/61 mmHg) represents normal cardiovascular adaptation to exercise stress in a female patient. No intervention or additional evaluation is needed based solely on this blood pressure reading. Focus should remain on other stress test parameters including exercise capacity, ECG changes, symptoms, and heart rate response for comprehensive risk assessment.