51. Transcatheter aortic valve thrombosis: incidence, clinical presentation and long-term outcomes
- Author
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Masahiko Asami, Thomas Pilgrim, Stephan Windecker, Lorenz Räber, Anna Franzone, Jonas Lanz, Eva Roost, Alan G. Haynes, Fabien Praz, Stefan Stortecky, and Bettina Langhammer
- Subjects
Male ,medicine.medical_specialty ,Hemodynamics ,610 Medicine & health ,030204 cardiovascular system & hematology ,Risk Assessment ,Cohort Studies ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,360 Social problems & social services ,Internal medicine ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Registries ,030212 general & internal medicine ,Heart valve ,Thrombus ,Adverse effect ,Aged ,Retrospective Studies ,Aged, 80 and over ,Analysis of Variance ,business.industry ,Incidence (epidemiology) ,Anticoagulants ,Thrombosis ,Retrospective cohort study ,Aortic Valve Stenosis ,General Medicine ,medicine.disease ,Prosthesis Failure ,Logistic Models ,Treatment Outcome ,medicine.anatomical_structure ,Heart Valve Prosthesis ,Heart failure ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,Echocardiography, Transesophageal ,Follow-Up Studies - Abstract
Aims To assess the incidence, management and long-term outcomes of transcatheter heart valve thrombosis (THVT). Methods and results Between August 2007 and February 2016, 1396 patients were included in the Bern TAVI Registry and prospectively followed-up through echocardiographic and clinical evaluation. THVT was suspected in case of: (i) a mean transvalvular pressure gradient greater than 20 mmHg at transthoracic echocardiography, or (ii) an increase of more than 50% of the mean transvalvular pressure gradient compared with previous measurements or (iii) new symptoms or signs of heart failure with the presence of thrombus documented by transoesophageal echocardiography or multi-slice computed tomography. THVT occurred in 10 patients (0.71%) at variable time points after TAVI. Increased transvalvular pressure gradients were recorded in all patients and 7 out of 10 patients were symptomatic. Oral anticoagulant therapy (with vitamin K antagonists or non-Vitamin K antagonists) was initiated in all but two patients and resulted in normalization of transvalvular pressure gradients and amelioration of clinical status within 1 month. At long-term follow-up (between 10 and 25 months after valve thrombosis), echocardiographic findings were stable and no adverse events were reported. Conclusion THVT is rarely detected at routine clinical and echocardiographic evaluation after TAVI. Oral anticoagulation appears effective to normalize transvalvular gradients in the majority of cases with stable clinical and haemodynamic evolution during long-term follow-up.
- Published
- 2017