Use of Natriuretic Peptides and Echocardiography for Diagnosing Heart Failure

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Abstract
Aims: International guidelines have recommended the use of echocardiography and natriuretic peptides (NP) testing in the diagnostic evaluation of heart failure (HF) for more than 10 years. However, real-world utilization of these diagnostic tests in the US is not known. We sought to assess contemporary trends in echocardiography and NP testing for diagnosing HF in the US. Methods and results: The TriNetX data were queried for the total number of first HF diagnoses in adults aged >18 years in the US from 2016 to 2019 with exclusions applied. NP testing and echocardiography any time before through 1 year following the index diagnosis were assessed. Temporal trends significance was evaluated using Cochran–Armitage trend tests. A total of 124 126 patients were included. Mean age was 68 ± 13 years, 53% were male, and 71% were White. Overall, 61 023 (49%) incident diagnoses were made in the outpatient and 63 103 (51%) in the inpatient setting with a significantly increasing trend toward inpatient diagnoses (p < 0.001). Of all incident HF diagnoses, 70 612 (57%) underwent echocardiography, 67 991 (55%) underwent NP testing, and 31 206 (25%) did not undergo either diagnostic test. There were increasing trends in the proportion of patients diagnosed in the inpatient versus outpatient setting that underwent echocardiography, NP testing, and either diagnostic test (p < 0.001 for all). Conclusions: We found low rates of echocardiography and NP testing in those with HF, with more of such testing performed amongst inpatient diagnoses. We also found increasing rates of inpatient HF diagnoses, indicating lost opportunities for earlier treatment initiation and better outcomes.

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