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Background Vasoplegia has been reported in patients receiving angiotensin receptor-neprilysin inhibitors (ARNI) with heart failure with reduced ejection fraction (HFrEF). We present a case of vasoplegic shock after initiation of ARNI in a hospitalized 65-year-old man recovering from cardiogenic shock (CS) and acute kidney injury (AKI). Case summary A 65-year-old man with HFrEF presented to a community hospital with CS with evidence of poor perfusion with a lactate of 5.6 mmol/L and creatinine (Cr) 125 µmol/L. He was treated with intravenous furosemide infusion. Subsequently, his lactate normalized but he developed an AKI with a Cr of 176 µmol/L. He was then started on ARNI and beta blockers. Over the next 24 h, he developed a vasoplegic shock necessitating multiple vasopressors and a transfer to a tertiary academic centre. With supportive therapy, his vasoplegic shock improved and he was discharged home. Discussion PARADIGM-HF found that the introduction of an ARNI in patients with ambulatory symptomatic HFrEF reduces the risk of death and heart failure hospitalization. Most recently, PIONEER-HF showed that ARNI reduced N-terminal pro-B-type natriuretic peptide levels at 4 and 8 weeks, without significantly different rates of medication-related adverse effects. However, thus far, no clinical trials have examined the role of ARNI in CS. Our case report highlights the risk of vasoplegic shock caused by initiation of ARNI in patients hospitalized with CS especially in whom renal and hepatic impairment is present.

Crossing the chasm: caution for use of angiotensin receptor-neprilysin inhibition in patients with cardiogenic shock– a case report