ABSTRACT
Indications for medical interventions are important in order to perform a cause related therapy which at the same time is adequate in its measures. Numerous indications for in vitro fertilisation (IVF) are to be taken into consideration especially when other forms of infertility treatment have failed so far. In our own hands comparing success rates as pregnancies per embryo transfers, intracytoplasmic sperm injection (ICSI) as a special form of IVF achieves a pregnancy rate of 26 per cent while IVF shows a lower pregnancy rate of 20 per cent. According to the task force of gynaecological endocrinology and reproductive medicine of the German Society of Gynaecology and Obstetrics, ICSI therapy is indicated in case of two IVF attempts without fertilisation or in case of azoospermia, cryptozoospermia and oligoasthenoteratozoospermia or other forms of long time male subfertility.
