July 15, 2008
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In Vitro fertilization is the proper medical name for what the press dubbed ?test tube babies? many years ago. Eggs are fertilized in a laboratory dish with sperm and then place inside the woman?s womb. In Vitro Fertilization may be recommended for a number of reasons including; age, other techniques have failed, the woman?s tubes are blocked or the infertility cannot be explained.
Methods of IVF will invariably differ a little from clinic to clinic but should proceed along these lines. At first your physician will halt the release of hormones that are produced during your monthly cycle by giving you some drugs. This allows them better control over when your eggs are produced. You then take different drugs to make your ovaries produce more than one egg.
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To monitor your developing eggs, vaginal ultrasound scans are taken as well as blood tests to ensure that the eggs are increasing the estrogen level. Once the time is right, another hormone will be injected to help the eggs mature. This injection is given 34 to 38 hours before the eggs will be collected to the timing of this is very important. Ultrasound guidance is used to help collect the egg but it means you have to be given drugs or a general anesthetic to help you relax because it takes about 30 minutes.
It?s about this time that the man must produce some fresh sperm. After a short storage period the sperm are washed and spun at high speed to enable the most active and healthiest to be chosen. With donated sperm, the process is the same but the sample is taken from the freezer. Once that has been completed the sperm is mixed with the eggs in a dish and left for between 16 to 20 hours and then checked to see if they have been fertilized. Successfully fertilized embryos are then left for a further day to two days before the last inspection is carried out.
The womb needs to be ready to accept the fertilized egg so a gel, injection or pessaries are given to ensure the lining of the womb is prepared.
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