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[Indications and results of oocyte donation in Spain].

In Spain, oocyte donors are selected from anonymous, well-informed university students over 18 years of age, who give their informed consent in writing. Before being accepted as donors, the candidates' personal and family medical histories were taken and they were given a gynaecological examination, genital ultrasonography, and analysed for viral infections and caryotype. The donors received economic compensation of about 900 euros. Among candidates for oocyte donation, 75% abandoned or were rejected following medical examination. The pregnancy rate was higher after transfer of fresh embryos (synchronous donor) (56%) as compared with frozen-tawned embryo transfer (46%). Among Turner's syndrome patients, cardiovascular complications are potentially the most severe during pregnancy, such as the exacerbation of a pre-existing hypertension and the dissection of aortic aneurysms. Logistic factors such as the travel and time commitment involved were major reasons for non-satisfaction of donors.