Abstract
Background: The use of maximum tolerated doses of guideline directed medical therapy (GDMT) for patient with heart failure with reduced ejection fraction (HFrEF) has been suboptimal in routine clinical practice. In particular, the rate of adoption of the angiotensin receptor blocker-neprilysin inhibitor (ARNI) has lagged. In this study, we aim to evaluate the use of optimal GDMT and the effect of ARNI on heart failure related re-admission (HFRR) in a real life setting from a single center community hospital. Method: Retrospective chart review was conducted in patients who were admitted to our hospital system for HFrEF between December 2019-January 2021. Data was collected for patient demographics, comorbidities, admission and discharge medications, length of stay and rate of 30-day HFRR. Results: 357 patients were included in the analysis. 92.7% were discharged on beta blockers, 50% were discharged on ACE-I/ARB, 6.4% were discharged on ARNI and 47.75% were discharged on MRAs. The target doses of each were only achieved in 7.3%, 27%, 100% and <1% respectively. 43% patients were not discharged on either ACE-I/ARB/ARNI. Patients discharged on ARNI had numerically lower rates of chronic kidney disease > stage 3, and lower BNP levels than those discharged on ACE-I/ARB. HFRR was lower in patient discharged on ARNI vs ACE-I/ARB (4.17% vs 16%), although this was not statistically significant due to low sample volume (p = 0.20). Conclusion: Our study shows that the rate of adoption of GDMT, especially ARNI, in hospitalized HFrEF patients in clinical practice lags significantly behind from that reported in clinical trials. Although there was no statistical significance achieved in comparison due to small sample size, we see a trend of decreased heart failure readmission in patients discharged on ARNI. The wide gap of adoption of GDMT in the real world remains a challenge, and adversely impacts patient outcomes.
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