Value of ambulatory blood pressure measurement in diagnosing hypotension in hypertensive diabetic patients with medication-controlled BP.

Background: Hypotension is a common clinical finding in diabetic patients on anti-hypertensive medications. In the absence of clearly defined and documented hypotensive episodes, clinicians are faced with the challenge of modifying antihypertensive medication in potentially symptomatic diabetic patients.

Objective: To determine the value of ambulatory blood pressure monitor (ABPM) in diagnosing hypotensive episodes in hypertensive diabetic patients with medication-controlled blood pressure.

Patients and methods: The records of all hypertensive diabetic patients with medication-controlled were obtained between 2017 and 2018. Patients' demographic data, comorbid conditions, hypotensive symptoms and echocardiography results were obtained and compared to office-based blood pressure and ABPM.

Results: Of 926 patients screened in the department of medicine outpatient clinics, 231 patients had diabetes and hypertension and were taking antihypertension medications, so only 86 patients were recruited. Using 24 h ABPM, hypotensive events were documented in 65 (75.6%) patients without correlated hypotensive symptoms in the patient sheet. Patients who had hypotensive episodes recorded by ABPM tended to have these between 5 and 10 a.m. and were significantly older - 60.71 versus 58.76 (P = .022) - and more likely to have lower ejection fractions by echocardiography 46.31 versus 62.85 (EF) (P < .001).

Conclusion: In treated hypertensive diabetic patients with antihypertensive medication, ABPM may be beneficial in capturing bouts of asymptomatic (silent) hypotension readings that occur in the out-of-hospital setting. Diabetic patients with controlled hypertension based on office reading showed a significant number of asymptomatic hypotensive readings detected with ambulatory BP monitoring that can have a role in following up such patients.