P366 FULMINANT MYOCARDITIS WITH SPONTANEOUS RESOLUTION AFTER COVID 19 AND ALLERGIC EPISODE: MIS–A OR ALLERGIC MYOCARDITIS?

Abstract

Abstract Clinical case 23–year–old male. No medical history Not vaccinated for Sars–Cov2; Recent Sars–Cov2 infection (negative antigenic swab on 03/01/22); Pharyngodynia treated with ibuprofen + ciprofloxacin and amoxicillin ac clavulanic acid(suspended for purpuric lesions on hands) After 5 days from onset of symptoms, access to PS for loss of consciousness. Laboratory: ph 7.4; Lat 3.4 EKG: sinus tachycardia HR 126 bpm ECHOCARDIOGRAM: Non–dilated left ventricle, marked reduction in FE (15%) spontaneous echocontrast in ventricular cavity chest TC: hypodense tissue in anterior mediastinum; adenopathy in peribronchial site, distended gallbladder transfer to Vanvitelli Cardiac ICU Amine support with augmented DBT for hypotension and tachycardia LAB: Tni 2193; Nt proBNP 27796; PCR 26; PCT 4; crea 1,4, Lat 1 CATH DX + EMB after 24 hours EBM: …Mixed cellularity endomyocarditis, predominantly lymphocytic, presence of eosinophils… enrollment in the MYTHS study: placebo group (saline solution) after 10 day MRI:Normal biventricular systolic function. Tissue characterization images consistent with the presence of limited area of active myocardial damage and with nonischemic pattern involving the basal segment of the infero–lateral wall of the left ventricle. Discussion The case has been a source of considerable discussion to establish the etiology of myocarditis. Although with numerous doubts, after careful evaluation of the histologic picture, the case falls under possible MIS–A (MULTISYSTEM INFLAMMATORY SYNDROME in adult) Cardiac manifestations of MIS–A include myocarditis, pericarditis, and arrhythmias, which can rapidly lead to cardiogenic shock.