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Evaluation of platelet count after isolated biological aortic valve replacement with Freedom Solo bioprosthesis.
- Source :
-
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery [Eur J Cardiothorac Surg] 2012 Jan; Vol. 41 (1), pp. 69-73. - Publication Year :
- 2012
-
Abstract
- Objective: The risk of thrombocytopenia in patients undergoing aortic valve replacement (AVR) with the Freedom Solo (FS) bioprosthesis is controversial. The aim of our study was to evaluate the postoperative evolution of platelet count and function after AVR in patients undergoing isolated biological AVR with FS.<br />Methods: Between May 2005 and June 2010, 322 patients underwent isolated biological AVR. Of these, 116 patients received FS and were compared with 206 patients who received biological valves. Platelet count, mean platelet volume (MPV), and platelet distribution width (PDW) were evaluated at baseline (T0), first (T1), second (T2), and fifth (T3) postoperative days, respectively.<br />Results: Overall in-hospital mortality was 1.5% with no difference between the two groups. Thirty-seven (11.5%) patients developed thrombocytopenia. FS implantation was associated with a higher incidence of thrombocytopenia compared with the control group (24.1% vs 4.4%, p<0.0001). Patients in the FS group showed a lower platelet count than the control group at T1 (99.4±38×10(3) μl(-1) vs 122.5±41.6×10(3) μl(-1), p<0.001), T2 (79.7±36.3×10(3) μl(-1) vs 122.5±43.3×10(3) μl(-1), p<0.001) and T3 (86.6±57.4×10(3) μl(-1) vs 158.4±55.8×10(3) μl(-1), p<0.001). Moreover, the FS group also had a higher MPV (11.6±0.9 fl vs 11±1 fl, p<0.001) and higher PDW (15.1±2.3 fl vs 13.9±2.1 fl, p<0.001) at T3. In a multivariable analysis, FS (p<0.0001), body surface area (p<0.0001), cardiopulmonary bypass time (p=0.003), and lower preoperative platelet counts (p=0.006) were independent predictors of thrombocytopenia.<br />Conclusions: The FS valve might increase the risk of thrombocytopenia and platelet activation, in the absence of adverse clinical events. Prospective randomized studies on platelet function need to confirm our data.
- Subjects :
- Aged
Aged, 80 and over
Blood Platelets pathology
Cell Size
Female
Humans
Male
Middle Aged
Platelet Count
Prosthesis Design
Retrospective Studies
Aortic Valve surgery
Bioprosthesis adverse effects
Heart Valve Prosthesis adverse effects
Heart Valve Prosthesis Implantation adverse effects
Thrombocytopenia etiology
Subjects
Details
- Language :
- English
- ISSN :
- 1873-734X
- Volume :
- 41
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery
- Publication Type :
- Academic Journal
- Accession number :
- 21664141
- Full Text :
- https://doi.org/10.1016/j.ejcts.2011.04.015