Adherence to guidelines in management of symptoms suggestive of heart failure in primary care.

OBJECTIVE: Clinical guidelines on heart failure (HF) suggest timings for investigation and referral in primary care. We calculated the time for patients to achieve key elements in the recommended pathway to diagnosis of HF.
METHODS: In this observational study, we used linked primary and secondary care data (Clinical Practice Research Datalink, a database of anonymised electronic records from UK general practices) between 2010 and 2013. Records were examined for presenting symptoms (breathlessness, fatigue, ankle swelling) and key elements of the National Institute for Health and Care Excellence-recommended pathway to diagnosis (serum natriuretic peptide (NP) test, echocardiography, specialist referral).
RESULTS: 42 403 patients were diagnosed with HF, of whom 16 597 presented in primary care with suggestive symptoms. 6464 (39%) had recorded NP or echocardiography, and 6043 (36%) specialist referral. Median time from recorded symptom(s) to investigation (NP or echocardiography) was 292 days (IQR 34-844) and to referral 236 days (IQR 42-721). Median time from symptom(s) to diagnosis was 972 days (IQR 337-1468) and to treatment with HF-relevant medication 803 days (IQR 230-1364). Factors significantly affecting timing of referral, treatment and diagnosis included patients' sex (p=0.001), age (p<0.001), deprivation score (p=0.001), comorbidities (p<0.001) and presenting symptom type (p<0.001).
CONCLUSIONS: Median times to investigation or referral of patients presenting in primary care with symptoms suggestive of HF considerably exceeded recommendations. There is a need to support clinicians in the diagnosis of HF in primary care, with improved access to investigation and specialist assessment to support timely management. © Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.