Parameters
Affected by experience
Not affected by experience
Increase
No effect
Decrease
Mock embryo transfer
v
V
Cleaning/aspirating cervical mucous
v
V
Us guidance
v
V
Distance from fundus
v
V
Touch technique
v
v
Leaving the catheter inside the uterine cavity for 30–60′
v
V
Full bladder
v
V
Tenaculum usage
v
V
Blood on catheter
v
v
Soft catheter
v
v
Conclusions
Embryo transfer is the final and most vulnerable step in IVF treatment. There is still an enigma around many factors influencing success rates including the performers’ experience. Although the influence of the individual physician on pregnancy outcome at embryo transfer is still uncertain, according to some reports, there seems to be a difference in implantation and pregnancy rates among clinicians. The difference could be related to the experience of the provider and the technical method of embryo transfer. The differences in skills among physicians could be overcome with a learning curve and practice, using ultrasound-guided embryo transfer and by standardizing the method of transfer.
References
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Roseboom TJ, Vermeiden JPW, Schoute E, Lens JW, Schats R. The probability of pregnancy after embryo transfer is affected by the age of the patient, cause of infertility, number of embryos transferred and the average morphology score, as revealed by multiple logistic regression analysis. Hum Reprod. 1995;10:3035–41.PubMed
4.
Munne S, Alikani M, Tomkin G, Grifo J, Cohen J. Embryo morphology, developmental rate, and maternal age are correlated with chromosome abnormalities. Fertil Steril. 1995;64:382–91.PubMed
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