Time taken for cardiology care and one-year results for primary care physicians' referrals for cardiology consultation in heart failure patients: clinical implications for heart failure management

Abstract Background and Purpose The clinical trajectory of patients with heart failure (HF) is characterised by frequent episodes of decompensation requiring urgent medical assistance, hospitalisations, and an increased risk of mortality. HF clinical guidelines recommend early visits by health professionals after hospital discharge, yet little evidence exists regarding the associations between delayed medical attention and outcomes in HF patients. To assess the clinical impact of the time taken to receive cardiology care for referrals from primary care physicians (PCPs) to a cardiology department in HF patients, we selected 6,859 HF patients who visited the cardiology service at least once between 2010 and 2021. Methods Using an interrupted time series regression model, we analysed the impact of integrating e-consultations into the healthcare model (implemented in 2013) and evaluated the time taken to receive cardiology care, as well as all-cause, cardiovascular (CV), and HF-related hospital admissions and mortality. The primary objective of this analysis was to examine the associations between delays in cardiology care following a PCP referral and 1-year outcomes (HF-related, cardiovascular, and total hospitalisations; and HF-related, cardiovascular, and total mortality). Results Almost 50% were women, and the mean age was 77.8 years. Arterial hypertension (79.6%), diabetes (34%), atrial fibrillation (51.4%), ischemic heart disease (20.4%), and cerebrovascular disease were the most prevalent comorbidities. The mean time from PCP referral to cardiology consultation in the overall population was 22.3 days: <8 days in 53.9%, 8-14 days in 17.1%, 15-30 days in 15.9%, and >30 days in 13.0% of patients, respectively. One year after cardiology consultation, 68.6% of patients required assistance in an Emergency Department; 22.5% were hospitalised for any cause, 14.9% for cardiovascular reasons, and 9.2% for HF-related issues. Moreover, total mortality at 1-year was 8.6%, comprising 4.3% cardiovascular mortality and 1.3% HF-related deaths. Multivariate analysis of the relationship between the time taken to receive cardiology care and 1-year outcomes revealed a significant increased risk associated with a longer delay in cardiology assistance, particularly evident in the subgroup of patients with previous hospital admissions due to worsening HF (see Table). Conclusions Throughout the follow-up period, a reduced time taken to receive care was independently associated with better 1-year outcomes. We believe that our experience can contribute to the development of a more efficient ambulatory care pathway for HF patients, especially those at high risk, such as those with a history of hospitalisation due to worsening events. Our findings further support the clinical guideline recommendation for early contact by health professionals following hospital discharge, extending it to include PCP referrals for cardiology consultations.