Optimizing Hypertension Treatment in Older Patients Through Home Blood Pressure Monitoring by Pharmacists in Primary Care: The MINOR Clinical Trial

Abstract

Incorporating technology such as home blood pressure monitoring (HBPM) into the clinical routine generates opportunities to improve BP monitoring and control in primary health care. It is also important to prevent overtreatment. However, the combination of HBPM with collaborative drug therapy management (CDTM) has not yet been studied. This study aimed to assess the efficacy of combining HBPM with CDTM to optimize hypertension treatment for older patients. This open-label, parallel-group, randomized clinical trial was conducted between June 2021 and August 2022 in a Brazilian community pharmacy and included older patients (aged ≥60 years) with hypertension. Those who were classified as poorly adherent or nonadherent to the prescribed drug treatment or who were unable to perform HBPM were excluded. In the control group, participants received a BP monitor and instructions on how to perform HBPM. A general practitioner, who was provided a report with the obtained BP values, determined any changes to the treatment protocol. In the intervention group, a pharmacist enrolled participants in a drug therapy management protocol and provided the general practitioner with suggestions to optimize the antihypertensive drug therapy, in addition to the report with the BP values. The following outcomes were considered: the proportion of participants receiving deprescriptions of antihypertensive drugs, other treatment adjustments, and the difference in mean BP between the groups 45 days after performing HBPM. The study used a t test combined with Levene's test to calculate mean intergroup differences in BP, the paired t test to calculate mean intragroup differences in BP, and Pearson's χ2 test to determine intergroup differences in changes in drug therapy. In each group, 161 participants completed the trial. Antihypertensive agents were deprescribed for 31 (19.3%) participants in the intervention group versus 11 (6.8%) in the control group (P=0.01). In addition, 14 (8.7%) participants were prescribed antihypertensive drugs in the intervention group versus 11 (6.8%) in the control group (P=0.52). The mean office systolic BP and HBPM values were lower in the intervention group (P=0.22 and P=0.29, respectively). Combining HBPM with a CDTM protocol effectively optimized antihypertensive treatment for older patients in a primary health care setting. gov identifier: NCT04861727.