Very few, in actual fact. However, even if the tubal ligation itself is perfect, pregnancy may occur in approximately 1 out of 1,000 cases. This may happen during the months immediately following the ligation or even several years later. If you have a tubal ligation and your period is late or there is abnormal bleeding, you should have a pregnancy test to make sure that you are not pregnant.
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A tubal ligation (reanastomosis) can be reversed in many cases. The success of the procedure however depends on which portion of the tube was destroyed during ligation. And, once the tubes are unblocked again, there is no guarantee of fertility. Your doctor will have to carry out certain examinations before deciding whether reanastomosis is possible. This type of surgery is more complex than the initial ligation and requires several weeks' convalescence if it is done via an abdominal incision. In short, when you have a ligation, you must be absolutely sure that you truly want to become and remain sterile … even though you may be able to change your mind in certain cases!
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Their efficacy has been studied and is very similar to that of the pill. Compliance is probably better with these two new methods, which do not have to be taken on a daily basis like the pill.
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