Table 2.

Pharmacological characteristics of antihypertensive therapy in patients with apparent treatment-resistant hypertension who gave a urine sample for mass spectrometry urine analysis (N = 235)

Pharmacological characteristicsan (%)
Mean number of BP medications per patient (SD)3.7 (0.7)
Combination medications153 (65.1)
Three medications only103 (43.8)
ACE inhibitors100 (42.6)
Angiotensin blockers125 (53.2)
Beta-blockers146 (62.1)
Calcium channel blockers176 (74.9)
Diuretics225 (95.7)
Alpha-blockers40 (17.0)
Other vasodilators, direct renin inhibitors, %1 (<1)
  • a Number of participants and percentage, unless specified. ACE = angiotensin-converting enzyme. BP = blood pressure. SD = standard deviation.