Follicle recruitment determines IVF productivity rate via the number of embryos frozen and subsequent transfers James D. Stanger, John L. Yovich Reproductive.

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Presentation transcript:

Follicle recruitment determines IVF productivity rate via the number of embryos frozen and subsequent transfers James D. Stanger, John L. Yovich Reproductive BioMedicine Online Volume 27, Issue 3, Pages 286-296 (September 2013) DOI: 10.1016/j.rbmo.2013.05.015 Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions

Figure 1 Live birth rates per fresh (●) and frozen embryo transfer (■) and per egg collection (▴) as a function of the number of oocytes recovered. Reproductive BioMedicine Online 2013 27, 286-296DOI: (10.1016/j.rbmo.2013.05.015) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions

Figure 2 Live birth rate per egg collection by age group (♦, <35; ■, 35–39; ▴, ⩾40years) is shown as a function of the number of oocytes recovered. Reproductive BioMedicine Online 2013 27, 286-296DOI: (10.1016/j.rbmo.2013.05.015) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions

Figure 3 Influence of oocyte numbers on the contribution of frozen embryo transfers to the overall live birth rate as a function of the number of oocytes recovered in the original collection cycle. When 19–20 oocytes were recovered, more than 60% of all live births were derived from frozen embryo transfers. The insert graph shows the mean number of frozen embryo transfers per collection as a function of oocytes recovered. On average, there was 0.8 frozen embryo transfers per collection of 9–15 oocytes. Reproductive BioMedicine Online 2013 27, 286-296DOI: (10.1016/j.rbmo.2013.05.015) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions

Figure 4 Proportion of live births as a function of the number of oocytes recovered in the original collection cycle (▴), the number of embryos created (■) and the number of frozen embryos transferred (♦). Reproductive BioMedicine Online 2013 27, 286-296DOI: (10.1016/j.rbmo.2013.05.015) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions

Figure 5 Proportion of frozen embryos actually transferred per thawed embryo as a function of the number of oocytes collected. The decrease in utilization of frozen embryos may reflect decreased viability or increased embryo selection. Reproductive BioMedicine Online 2013 27, 286-296DOI: (10.1016/j.rbmo.2013.05.015) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions