June 16, 2008
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In Vitro Fertilization literally means ?fertilization in glass?, hence the familiar name of ?test tube baby?. The process involves sperm from a woman?s partner or a donor being placed in a dish with eggs that have been removed from her ovaries and fertilizing them before being placed in her womb. In Vitro Fertilization is recommended if you are an older woman, have been diagnosed with unexplained infertility, those whose tubes are blocked, or if other techniques have been unsuccessful.
Methods of IVF will invariably differ a little from clinic to clinic but should proceed along these lines. Your doctor will give some drugs to block the hormones normally released during the menstrual cycle. The reason for this is so the physician has improved control over when your eggs are produced. Once this has been done further drugs are given to multiply the number of eggs your ovaries produce.
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Vaginal ultrasound scans are carried out to monitor your developing eggs along with blood tests to chart the rising levels of estrogen produced by the eggs. Another hormone injection will be given when the tests show the time is right to help the eggs mature. The reason for this is that the eggs will be collected between 34 and 38 hours later, even if it is the middle of the night. When it is time to collect the eggs, you may be given a general anesthetic or drugs to make you feel drowsy as they are collected by ultrasound guidance and 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. For a woman using donated sperm, the same process is used once the sperm has been taken from the freezer. The process then continues with the eggs and sperm left for 16 to 20 hours in a laboratory dish to mix and after that period, checked to see if they have fertilized. Successfully fertilized embryos are then left for a further day to two days before the last inspection is carried out.
To ensure the womb is ready for the fertilized egg, two days after they have been collected, the womb lining is prepared by giving you pessaries, gel or an injection.
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