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Successful Pregnancy Outcome in a Woman Undergoing Aortic Valve Replacement Using a Mechanical Valve which Allows Reduced Anticoagulation Tetsuro Uchida 1 , Yoshinori Kuroda 1 , Atsushi Yamashita 1 , Azumi Hamasaki 1 , Shuto Hirooka 1 , Shingo Nakai 1 , Kimihiro Kobayashi 1 , Mitsuaki Sadahiro 1 1Second Department of Surgery, Yamagata University Keyword: young women , aortic valve replacement , pregnancy and childbirth , mechanical valve , anticoagulation treatment pp.1057-1060
Published Date 2019/12/1
DOI https://doi.org/10.15106/j_kyobu72_1057
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Pregnant women undergoing mechanical valve replacement are at a considerable risk of thromboembolic events, bleeding, and fetotoxicity associated with the administration of vitamin K antagonists and some other anticoagulants. We present our clinical experience of pregnancy and childbirth in a young woman who underwent aortic valve replacement (AVR) with a mechanical valve. A young woman underwent AVR with a bioprosthetic valve for a diagnosis of aortic regurgitation and bicuspid aortic valve at age 23. Four years later, structural valve deterioration (SVD) of the prosthetic valve necessitated redo AVR with bioprosthesis. Three years after the redo AVR, she developed recurrent SVD of the bioprosthesis, and the 3rd AVR operation was performed using an On-X mechanical valve, which allows reduced anticoagulation. She conceived 5 months after AVR using the On-X valve. Anticoagulation therapy was administered with a low-dose vitamin K antagonist combined with heparin infusion during pregnancy. No anticoagulation-induced maternal and fetal complications occurred throughout the pregnancy. The On-X valve, which allows lower levels of anticoagulation is useful in women wishing to get pregnant.


© Nankodo Co., Ltd., 2019

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電子版ISSN 2432-9436 印刷版ISSN 0021-5252 南江堂

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