Objectives To evaluate the impact of pharmaceutical care on the number of readmissions and visits to the emergency department due to heart failure 30 days after hospital discharge, based on a programme of continuous pharmaceutical care throughout the care process, and to assess the differences between the control and intervention groups at 90 days after discharge (number of readmissions and visits to the emergency department, time from discharge to new readmission or visit to the emergency department).

Methods A single-centre experimental longitudinal prospective open and parallel-group study with balanced randomisation (1:1) was carried out in a tertiary hospital in Spain. Patients with a diagnosis of primary or decompensated heart failure admitted to the Cardiology Service or the Heart Failure and Vascular Risk Unit were recruited between March 2019 and November 2021 and randomly assigned, using a randomised block model, to the control (standard care) or intervention (continuing care model) groups. Epidemiological, clinical and pharmacology data were recorded. As a measure of association, we used the mean difference and the Student’s t-test. A p value of <0.05 was considered significant.

Results 296 patients were included (150 randomised to the control group, 146 to the intervention group). The results showed no significant differences between the control and intervention groups in the number of readmissions and visits to the emergency department during the 30 days after discharge (p=0.092), but a statistically significant difference was seen at 90 days (p=0.043). The number of days until the first visit to the emergency department or readmission was higher in the intervention group (p=0.021).

Conclusions Continuous care and follow-up by the pharmacist 30 days after discharge has a neutral impact on hospital readmissions and visits to the emergency department of patients with heart failure, but it is positive in the 90 days following discharge.