No abstract available.
Pregnancy Rate* ; Pregnancy* ; Sterilization*

No abstract available.
Pregnancy Rate* ; Pregnancy*

No abstract available.
Pregnancy Rate* ; Pregnancy*

No abstract available.
Humans ; Leiomyoma* ; Pregnancy Rate* ; Pregnancy*

No abstract available.
Female ; Menstrual Cycle* ; Pregnancy Rate* ; Pregnancy*

No abstract available.
Fertilization in Vitro* ; Humans* ; Micromanipulation* ; Pregnancy Rate* ; Pregnancy*

Modified double layer vasovasostomy was performed in 142 patients, among 178 vasovasostomies, from Jan. `76. to Aug. `87. in Pusan National University Hospital. Overall pregnancy rate of this method were 49.5% and its anatomical success rate were 85.7%. The shorter the duration of obstruction, the better results were abstained. This method was simple and easy, and has good success rate.
Busan ; Humans ; Pregnancy Rate ; Vasovasostomy*

Humans ; Pregnancy Rate ; Sterilization, Tubal*

Aims: To study the validity of a scoring system in evaluating embryo quality and predicting pregnancy potential. The scoring system was formulated using morphologic parameters and cleavage rates. Embryos were scored between 0 and 10 according to morphologic criteria and cleavage rate. Materials and METHODS: The pregnancy results of 2,371 fresh embryos scored by this criteria and transferred between January 1991 and September 1992 in the Monash IVF Program, Melbourne, Australia were analysed for this study. RESULTS: Analysis of 2,371 fresh embryos scores from 926 consecutive transfers showed that intrauterine and multiple pregnancy rate increased significantly along with increased total score per transfer(p < 0.05). Pregnancy rate also increased from 10.7% to 21.6% as the number of embryos with a score of 7 or more(good embryo) increased from 0 to 3(p < 0.05). The well-known relationship between the number of embryos transferred and pregnancy rate was also found but this correlation could not seen when all of added embryos were scored less than 7. When all the embryos in a given transfer were scored less than 4(poor embryo), the pregnancy rate was near zero regardless of the number of embryos transferred. Conclusion: This study indicated that an embryo scoring system based on morphologic and cleavage rate criteria could be useful in selecting good quality embryos and predicting the pregnancy rate in an IVF/ET program.
Australia ; Embryonic Structures* ; Female ; Pregnancy Rate ; Pregnancy* ; Pregnancy, Multiple

OBJECTIVE: Evaluation of early cleaving time to 2-cell stage has been proposed for the selection of embryos with high implantation potential. In order to provide criteria for the selection of early cleaving 2-cell embryo, a prospective study was performed. METHODS: Embryos that had cleaved early at 25 hours and 27 hours postinsemination were designated as EC (early cleavage)-1 and EC-2, respectively, while others were designated as NEC (non-early cleavage). Statistical analysis was performed using the unpaired student t-test and chi-square test. P<0.05 was considered statistically significan RESULTS: At least one early cleavage embryo was observed in 98 (51.5%) for the EC-1 and 44 (23.2%) for the EC-2 of the 190 cycles assessed. Clinical pregnancy rates were significantly higher in the EC-1 group (58.2%) compared to the EC-2 group (31.8%) or the NEC group (22.9%) (P<0.05). Clinical pregnancy rates and implantation rate were increased if at least one EC-1 embryo was produced, and the increased pregnancy outcome was related positively with the number of EC-1 embryo. When the number of EC-1 embryo transferred was 0 or 1, most pregnancies were singleton (88.0%, 87.5%, respectively). However, when the number of EC-1 embryo transferred was 2 or more, multiple pregnancy rates were increased up to around 40%. CONCLUSION: These results shows that 25 hours postinsemination is more effective than 27 hours as a critical time-point for the selection of early cleaving 2-cell embryos with high implantation potential, and that number of early cleaving embryos is an important parameter for the prediction of pregnancy outcome including the chance of multiple pregnancies.
Embryonic Structures* ; Female ; Humans ; Pregnancy ; Pregnancy Outcome* ; Pregnancy Rate ; Pregnancy* ; Pregnancy, Multiple ; Prospective Studies