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WHAT IS KRYO?
Kryo is the process of storing the embryo (cellular agent which is created by fertilization of the egg by the sperm) as frozen.
WHOM IS IT APPLIED?
When excessive embryos are obtained during the tube baby application, the embryos which cannot be transferred are stored as frozen.
These embryos can be resolved and used in the following trials if pregnancy does not occur. There should be 2 frozen embryo at least for such a trial. Ovarian Hyperstimulation syndrome: it is a disease that occurs as a result of excessive reaction of the ovaries to drugs used and shows itself with grown ovaries and abdominal dropsy. Embryo transfer may deteriorate the clinic table in these patients. In this situation, embryos are stored as frozen and transferred in a period when the patient gets better clinically.
WHAT ARE THE ADVANTAGES?
Kryo process is economical. Because we already have embryos in our hands, it is not necessary to stimulate the ovaries with drugs or collect eggs again. This situation reduces the treatment cost in half.
It is less stressful for patient. There is not any risk of being unable to obtain egg or embryo and operation stress. Adaptation of the patient to the treatment is easier.
Side effects of the treatment are less.
It prevents multiple pregnancy.
WHAT ARE THE DISADVANTAGES?
The embryo may be damaged for 30% during the freezing-resolving process. These embryos cannot be transferred.
HOW IS THE KRYO CYCLE APPLIED?
First, hormones which affect the ovary functions are suppressed. After this, tablets which contain estrogen hormone are used in increasing doses. This hormon provides the healthy development of the internal membrane of the womb in which the embryo will place. When the endometrium reaches the proper thickness, embryos are resolved and transferred.
DOES ANY PROBLEM OCCUR IN BABIES BEING AS A RESULT OF KRYO?
Studies have shown that there is no risk in terms of anomaly with the babies being born by this way.
WHAT IS THE SUCCESS RATE?
The success rate is lower for 5% in average when compared to the transfer of fresh embryo.