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  • Title: [Pregnancy in women with a mechanical heart valve. Review of the literature].
    Author: Berard J, Dufour P, Subtil D, Vaksmann S, Monier E, Puech F, Monnier JC, Codaccioni X.
    Journal: J Gynecol Obstet Biol Reprod (Paris); 1997; 26(5):455-64. PubMed ID: 9417457.
    Abstract:
    AIM: To define therapeutic ways to manage obstetrics at an optimal level for a patient carrying a mechanical prosthetic heart valve. METHOD: From a review of literature and documented cases, we propose an obstetrical and cardiological management scheme for pregnant patients carrying a mechanical prosthetic heart valve. We deal successively with the preventive (anticoagulation) and curative treatment (surgery and thrombolytic therapy) of valvular thrombosis, in fact, a severe -but unfortunately frequent- complication of these pregnancies. RESULTS: Pregnancy concerning patients with mechanical prosthetic heart valves is a high-risk pregnancy. In fact, the risk of thrombo-embolic accidents even with a closely followed anticoagulant treatment seems to come from the existence of the prothese, the state of physiological hypercoagulation and peri-partum hemorrhages. Naturally, multidisciplinary follow-up is indispensable. The prescription of anticoagulant treatments must respect the main principals and the normal counter-indications in order to minimise maternal and fetal complications. CONCLUSION: Pregnancy amongst patients carrying mechanical prosthetic heart valves should be considered rare and highly exceptional cases, from a cardio-vascular surgeon's point of view. For obstetricians, it is sometimes difficult to forbid pregnancy to a nullipara. The discussion whether to authorize a pregnancy will be treated case-by-case, holding into account the socio-cultural environment of the patient, as the principles of an anticoagulant treatment and the underlying risks must be well understood.
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