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- W3197222012 abstract "Introduction: Direct observed therapy (DOT) has emerged as a method for assessment of adherence, particularly in patients with apparent treatment-resistant hypertension (ATRH), in clinical care as well as research. We have previously demonstrated that direct observed therapy resulted in controlled hypertension in 30% of patients with ATRH. In this study we report on the safety of DOT in terms of change in blood pressure (BP) and hypotensive symptoms. Methods: Patients with ATRH were enrolled in a prospective study of DOT, which was followed by ambulatory blood pressure monitoring on the same day and at one month. DOT was performed by administering all prescribed BP lowering drugs, supervised by a nurse in an outpatient clinic setting. BP and vitals were measured at baseline and every 30 minutes until BP plateau based on two consecutive BP readings. All BP measurements during DOT were performed using an automated oscillometric BP device. In this study, we report the change in BP during DOT, with incidence of orthostatic symptoms, and decrease in systolic BP > 20 mm Hg as outcomes of interest. Results: 50 patients underwent DOT, 32 men, mean age 62 years on median 4 BP lowering drugs (range 3 to 7). The mean baseline BP was 146/77 mm Hg , and the lowest BP during DOT was 129/68 mm Hg. The median decrease in systolic BP was 14 mm Hg (range 0 to 60) and diastolic BP was 8 mm Hg (range 0 to 37). 5 patients (10%) developed orthostatic symptoms during DOT, none of which required any interventions, and resolved with continued observation. A decrease of > 20 mm Hg in systolic BP was seen in 19 patients (38%), and a systolic BP of < 110 mm Hg was seen in only 6 patients (12%). Conclusions: DOT caused decrease in BP by >20 mmHg in about 40% of patients. While these large acute decreases in BP were largely asymptomatic, close observation of BP is required until peak BP lowering effect wanes. As decrease in BP is driven by the degree of non-adherence and number of prescribed BP lowering drugs, our safety record has limitation dictated by the number of subjects enrolled, and relatively small number of patients with more than 5 BP lowering drugs." @default.
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- W3197222012 date "2021-09-01" @default.
- W3197222012 modified "2023-09-27" @default.
- W3197222012 title "Abstract P128: Direct Observed Therapy In Suspected Resistant Hypertension Is Safe" @default.
- W3197222012 doi "https://doi.org/10.1161/hyp.78.suppl_1.p128" @default.
- W3197222012 hasPublicationYear "2021" @default.
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