Impact of hospital pharmacist-delivered individualised pharmaceutical service intervention on clinical and patient-reported outcomes in patients with hypertension: a randomised controlled trial

Abstract

Objectives: Patients with hypertension in Nepal are often known to have poor medication adherence and quality of life. This randomised controlled trial aimed to evaluate the impact of a hospital pharmacist-delivered individualised pharmaceutical service (P-DIPS) intervention on blood pressure, medication adherence and health-related quality of life (HRQoL) among patients with hypertension in a hospital setting in Nepal.

Methods: In an open trial, 56 adult patients with hypertension who had been receiving antihypertensive medication for ≥6 months were randomly allocated to a control group (n=28) which received the usual care and an intervention group (n=28) which received a P-DIPS along with the usual care. The difference in blood pressure, medication adherence and HRQoL between the two groups at baseline, 2 and 4 months was compared using the Mann-Whitney U test, independent t-test or χ² tests.

Results: Participants were mostly ≥40 years (86%) and female (57%). There were no significant differences in the baseline characteristics between the control (C) and intervention (I) groups. At 2 months, the two groups had a significant improvement in the median (IQR) Morisky-Green-Levine (MGL) Medication Adherence Score (I=1 (2) vs C=2 (2); p<0.001) and the median (IQR) mental component of HRQoL (I=43.6 (9.5) vs C=37.5 (8.6); p=0.013). At 4 months, there were significant differences in the median (IQR) values of all the outcome measures between the groups (systolic blood pressure: I=125 (10) mmHg vs C=130 (15) mmHg, p=0.008; diastolic blood pressure: 80 (14) mmHg vs 90 (10) mmHg, p=0.012; MGL score: I=1 (1) vs C=2 (1), p<0.001; physical component of HRQoL: 45.0 (9.0) vs 40.3 (8.2), p=0.046; and mental component of HRQoL: 47.1 (11.1) vs 38.8 (8.5), p=0.003).

Conclusions: The findings suggest that a P-DIPS intervention in the hospital setting of Nepal has a significant potential to improve blood pressure, medication adherence and HRQoL in patients with hypertension.

Keywords: communicable diseases; health services administration; hospital; hypertension; pharmacy service; primary health care; randomized controlled trial.