Mitral valve bio-prosthesis and annuloplasty thrombosis during extracorporeal membrane oxygenation: case series.
Case series
Extracorporeal membrane oxygenation
Mitral valve
Thrombosis
VA-ECMO
Journal
European heart journal. Case reports
ISSN: 2514-2119
Titre abrégé: Eur Heart J Case Rep
Pays: England
ID NLM: 101730741
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
20
07
2019
revised:
29
08
2019
accepted:
23
03
2020
entrez:
4
7
2020
pubmed:
4
7
2020
medline:
4
7
2020
Statut:
epublish
Résumé
Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is a well-recognized form of haemodynamic support for patients with refractory cardiogenic shock, who are unable to be weaned off cardiopulmonary bypass. Thrombosis or bleeding from cannula sites or surgical wounds are the leading cause of morbidity and mortality in these patients, and presents a delicate balance of anticoagulation during management of patients undergoing circulatory support. In this case series, we discuss three cases of patients undergoing mitral valve replacements or repair with thrombosis of their new bio-prosthesis in the immediate post-operative setting. All three patients were supported with VA-ECMO post-operatively, and thrombosis occurred despite anticoagulation. During extracorporeal membrane oxygenation, the reduced flow throughout the heart increases the risk of intra-cardiac thrombosis. This is of particular importance in the context of mitral valve replacements and repairs, where the bio-prosthesis is an additional risk factor for thrombosis. Our cases demonstrate the morbidity and mortality of such complications, with the likely aetiology being low transvalvular flow in a newly inserted valve combined with the pro-thrombotic state created by the VA-ECMO circuit.
Sections du résumé
BACKGROUND
BACKGROUND
Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is a well-recognized form of haemodynamic support for patients with refractory cardiogenic shock, who are unable to be weaned off cardiopulmonary bypass. Thrombosis or bleeding from cannula sites or surgical wounds are the leading cause of morbidity and mortality in these patients, and presents a delicate balance of anticoagulation during management of patients undergoing circulatory support.
CASE SUMMARY
METHODS
In this case series, we discuss three cases of patients undergoing mitral valve replacements or repair with thrombosis of their new bio-prosthesis in the immediate post-operative setting. All three patients were supported with VA-ECMO post-operatively, and thrombosis occurred despite anticoagulation.
DISCUSSION
CONCLUSIONS
During extracorporeal membrane oxygenation, the reduced flow throughout the heart increases the risk of intra-cardiac thrombosis. This is of particular importance in the context of mitral valve replacements and repairs, where the bio-prosthesis is an additional risk factor for thrombosis. Our cases demonstrate the morbidity and mortality of such complications, with the likely aetiology being low transvalvular flow in a newly inserted valve combined with the pro-thrombotic state created by the VA-ECMO circuit.
Identifiants
pubmed: 32617486
doi: 10.1093/ehjcr/ytaa085
pii: ytaa085
pmc: PMC7319831
doi:
Types de publication
Case Reports
Langues
eng
Pagination
1-6Informations de copyright
© The Author(s) 2020. Published by Oxford University Press on behalf of the European Society of Cardiology.
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