heart valve prosthesis; mitral valve prosthesis; acenocoumarol; acetylsalicylic acid; alteplase; C reactive protein; fresh frozen plasma; inotropic agent; phenytoin; SARS-CoV-2 vaccine; thrombocyte concentrate; warfarin; abdominal discomfort; adult; anticoagulation; article; ascites; blood clot lysis; case report; case study; chronic atrial fibrillation; clinical article; continuous renal replacement therapy; coronavirus disease 2019; crackle; disease severity; disseminated intravascular clotting; dyspnea; echocardiography; electrocardiogram; epilepsy; erythrocyte concentrate; exertional dyspnea; female; fever; fluoroscopy; hepatomegaly; hospital discharge; human; hypotension; inferior cava vein; kidney function; liver function; liver vein; loose feces; low drug dose; male; melena; mitral valve commissurotomy; mitral valve replacement; mitral valve stenosis; multiple organ failure; pressure gradient; prophylaxis; prosthetic valve thrombosis; protein blood level; restenosis; rheumatic heart disease; shock; sinus tachycardia; vaccination; vagina bleeding; vomiting; x-ray computed tomography