| Results 40 - 42 of 1003 |
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Blastocyst Embryo Transfer
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Wednesday, 12 November 2008 |
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Blastocyst Embryo Transfer
BET is a variation of in vitro fertilization. Embryos are grown to a more advanced, stronger stage, very similar to the stage when embryos implant in the uterus, and are transferred five days after the egg retrieval. BET helps reduce the incidence of multiple gestation pregnancies by transferring fewer embryos.
Deccan Fertility Clinic & Keyhole Surgery Center
1, Shankar Niwas, Plot No 117,Dadasaheb Rege Marg,Opp Shiv Sena Bhavan,
Shivaji Park,Mumbai 400 028
India
Tel: +91 22 2446 6633 / 2444 9992
Fax: +91 22 2444 4443
testtubebabyclinic[<@>]gmail.com
http://www.testtubebabyclinic.com |
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Phone: 91 22 2446 6633 / 2444 9992 |
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Embryo Freezing
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Wednesday, 12 November 2008 |
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Embryo Freezing
This is the process of freezing embryos to preserve them over time. Frozen embryos have been successfully thawed and used in later cycles that resulted in pregnancy.
During a fresh stimulated IVF cycle 3-4 embryos are transferred to the patient and the remaining embryos are assessed to determine whether they will be frozen for later use.
The embryo freezing process takes approximately 3 hours. Embryos are sequentially treated with varying concentrations of a special solution, called the cryoprotectant. The cryoprotectant protects the embryos during the freezing process. Each embryo is then drawn into a specially designed sterile straw that is labelled with the patient’s full name and the date of the freeze. The straws containing the embryos are placed into a freezing machine, slowly cooled to -35 degrees C and stored in liquid nitrogen for long-term storage. (-196 degrees C).
Embryo Thawing
Embryo Thawing is the reverse of the freezing process, and involves warming the embryos. Scientists will thaw the embryos either the day before or on the day of the scheduled embryo transfer. Embryo thawing takes approximately 2 hours. Once the embryos are returned to room temperature, the embryos are again passed through a series of solutions to remove the cryoprotectant that is no longer needed. The thawed embryos are kept in the incubator until the embryo transfer, during which time they resume development and may undergo more cell division.
It is possible that some cells within the embryo may not survive freezing and thawing, however the embryo may still be viable. It is also possible that not all of your frozen embryos will survive the freezing and thawing process and in some cases no embryos survive freezing and thawing. There are currently no clear indicators to predict embryo survival.
An obvious benefit is the lower cost since ovarian stimulation, egg retrieval, and fertilization procedures do not need to be repeated with the subsequent cycle.
Frozen Embryo Transfer
The timing of the embryo transfer depends on a number of factors including the cell stage of the embryo when frozen and uterine receptivity. The overall success rates associated with transferring frozen-thawed embryos are, however, less when compared to a fresh embryo cycle.
Deccan Fertility Clinic & Keyhole Surgery Center
1, Shankar Niwas, Plot No 117,Dadasaheb Rege Marg,Opp Shiv Sena Bhavan,
Shivaji Park,Mumbai 400 028
India
Tel: +91 22 2446 6633 / 2444 9992
Fax: +91 22 2444 4443
testtubebabyclinic[<@>]gmail.com
http://www.testtubebabyclinic.com |
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Phone: 91 22 2446 6633 / 2444 9992 |
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Intracytoplasmic Sperm Injection
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Wednesday, 12 November 2008 |
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Intracytoplasmic Sperm Injection
Intra Cytoplasmic Sperm Injection (ICSI) is a laboratory procedure developed to help infertile couples undergoing In Vitro Fertilization (IVF) due to severe male factor infertility. ICSI involves the insertion of a single sperm directly into the cytoplasm of a mature egg (oocyte) using a special microinjection pipette (glass needle). After sperm injection into the egg, further culture and embryo transfer is as with the IVF cases. For patients with subfertile semen, this procedure is preferable to IVF.
ICSI can facilitate fertilization by sperm that will not bind to or penetrate an egg. It can also be used to treat men with extremely low numbers of sperm. However, ICSI is generally unsuccessful when used to treat fertilization failures that are primarily due to poor egg quality.
Indications for Intra Cytoplasmic Sperm Injection
Oligospermia - very low sperm counts
Asthenozoospermia – poor sperm motility
Teratozoospermia – too many abnormal sperms
Problems with sperm binding to and penetrating the egg
Antisperm antibodies (immune or protective proteins which attach and destroy sperm) of sufficient quality to prevent fertilization
Prior or repeated fertilization failure with standard IVF culture and fertilization methods
Frozen sperm collected prior to cancer treatment that may be limited in number and quality
Azoospermia with obstructive pathology - absence of sperm secondary to blockage or abnormality of the ejaculatory ducts that allow sperm to move from the testes. In this situation, sperms are obtained from the epididymis by a procedure called microsurgical epididymal sperm aspiration (MESA) or from the testes by testicular sperm extraction (TESE).
Thus very few azoospermic men need to resort to a sperm bank now with the availability of ICSI.
ICSI is not a perfect technique. Some eggs will be damaged by the ICSI process. Some eggs have plasma membranes that are difficult to pierce. In other instances, the fertilized egg may fail to divide, or the embryo may arrest at an early stage of development.
Perinatal outcome studies in Europe suggest that although multiple pregnancies are common with ICSI, there is no evidence of increased incidence of congenital malformations or abnormal karyotype. There is no evidence that abnormalities may arise later in life to babies born as a result of ICSI, although there is also no guarantee that all babies will be normal.
Deccan Fertility Clinic & Keyhole Surgery Center
1, Shankar Niwas, Plot No 117,Dadasaheb Rege Marg,Opp Shiv Sena Bhavan,
Shivaji Park,Mumbai 400 028
India
Tel: +91 22 2446 6633 / 2444 9992
Fax: +91 22 2444 4443
testtubebabyclinic[<@>]gmail.com
http://www.testtubebabyclinic.com
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Phone: 91 22 2446 6633 / 2444 9992 |
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