• Clinical and Experimental Reproductive Medicine
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• v.24 no.2
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• pp.211-216
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• 1997

The present study was carried out to evaluate whether the coculture system of human embryos with Vero cells can improve the quality of embryo or overcome the repetitive implantation failures in order to obtain pregnancy. From January to December 1996, a total 202 cases which patients with the problems of repetitive implantation failures (group I) or those with the poor embryonic quality in their previous cycles (group II) was analysed. The quality of cocultured embryo, pregnancy, on-going and implantation rates between coculture and control groups were compared. Of 93 cases in group I, coculture was performed in 34 cases and conventional IVF for the rest. Of 109 cases in group II, 36 for coculture and 73 for conventional IVF. In group I, pregnancy, on-going and implantation rates in coculture group (14/34 (41.2%), 9/34 (26.5%), 16/81 (19.8%), respectively) were higher than those of control (11/59 (18.6%), 8/59 (13.6%), 12/152 (7.9%), respectively). There is significance in the pregnancy and implantation rates (p=0.028 and p=0.015). In group II, pregnancy, on-going and implantation rates in coculture group (8/36 (22.2%), 5/36 (13.9%), 8/87 (9.2%), respectively) were higher than those of control (5/73 (6.8%), 3/73 (4.1%), 3/158 (1.9%), respectively). Like the result of group I, there is significance in the pregnancy and implantation rates (p=0.028 and p=0.022). Coculture system with Vero cells works well in the groups of the two indications. Although the case of 3 day-coculture was small as 15 cases in group II, 3 day-coculture improved pregnancy rate (4/15 (26.7%)). Therefore, 3 day-coculture with assisted hatching is recommended to the patients with poor embryonic quality. In conclusion, coculture system with Vero cells can be suggested as an effective method which improves pregnancy rate in those who have repetitive implantation failures or whose embryonic quality was poor in their previous cycles.

• Clinical and Experimental Reproductive Medicine
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• v.36 no.2
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• pp.129-136
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• 2009

The incidence of ectopic pregnancy is increased since in vitro fertilization-embryo transfer (IVF-ET) has started. And because of the possibility of combined pregnancy after IVF-ET, bilateral adnexal area and other portion of pelvis should be examined carefully by transvaginal ultrasonography during follow-up period. The rate of combined pregnancy after IVF is estimated to be as high as 0.2~1%. Since the incidence of combined pregnancies is markedly higher with IVF, special attention to this possibility after ET is warranted. According to a recent report, the occurrence of interstitial pregnancy is estimated to be 1:3600 for all pregnancies achieved with IVF. The prevalence of interstitial pregnancies is 2~4% of ectopic pregnancies. Interstitial pregnancies tend to be diagnosed later than most other ectopic pregnancies, and if uterine rupture occurs, the resulting hemorrhage can be severe. Currently, about 2% to 3% of interstitial pregnancies are thought to carry a maternal death, which is twice that of other tubal gestations. We report a case of simultaneous left tubal and right interstitial pregnancies after IVF-ET with a brief review of literature.

• Journal of the korean veterinary medical association
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• v.24 no.12
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• pp.744-757
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• 1988

이상에서 경제가축에 이용되고 있는 임신진단법을 소개하고 지금까지 보고된 임신진단에 관한 연구 결과를 고찰하였다. 현재 경제가축의 조기임신진단을 위한 진단법으로서는 양에 있어서는 직장촉진법, 호르몬측정법, 복강경법 및 초음파진단법 등 돼지에 있어서는 직장검사법, 호르몬측정법 및 초음파진단법 등, 소에 있어서는 직장검사법, 호르몬측정법 등, 말에 있어서는 호르몬측정법과 초음파진단법 등이 이용되고 있다. 이상적인 임신진단법의 요건은 임신진단이 조기에 가능해야하며 진단방법이 용이해야 할 뿐만 아니라 약품 및 기계조작이 간편해야하고 진단에 있어 전문지식이 요구되지 않아야 하며, 모체 및 태아에 악영향이 없으며 진단경비가 저렴해야하고 적중률이 높아야 한다. 앞으로 보다 정확하고 간편한 조기임신진단 기술의 개발과 보급화로 가축의 분만간격의 단축, 번식장해의 예방과 공태기간의 단축은 물론 가축의 증식과 번식능력의 향상을 가져올 수 있을것으로 생각된다.

• Fire Science and Engineering
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• v.33 no.6
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• pp.152-158
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• 2019

This study examined the socio-economic and clinical characteristics associated with the use of ambulance services among pregnant, childbearing, and postpartum women based on data from the 2008-2016 Korea Health Panel. The analysis revealed that among the pregnant, childbearing, and postpartum women, the proportion using all ambulance services was 18.9% whereas 12.0% used private and 119 ambulances. Moreover, among those using ambulance services, delivery was the most common reason (38.7%) followed by complications of labor and delivery (20.0%) and pregnancy with abortive outcome (17.3%). There were statistically significant differences between the users and non-users of ambulance services in terms of the average annual household income, emergency arrival time, and delayed arrival at the emergency room. As childbirth becomes more complicated due to low fertility and elderly mothers, the expansion and improvement of ambulance services as a social safety net for pregnant, childbearing, and postpartum women will become increasingly important.

• 대한생식의학회:학술대회논문집
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• 1995.12a
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• pp.57-58
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• 1995

• 대한생식의학회:학술대회논문집
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• 1999.11a
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• pp.64-64
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• 1999

• Clinical and Experimental Reproductive Medicine
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• v.36 no.4
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• pp.301-310
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• 2009

Objective: To compare the embryonic development and pregnancy results using sperms retrieved from fresh and frozen-thawed testicular tissue in patients with obstructive (OA) and non-obstructive azoospermia (NOA). Methods: A total two hundred twenty-two cycles of TESE-ICSI were performed in OA and NOA. Sperms were retrieved from fresh and frozen-thawed testicular tissue. ICSI was performed patient's own sperm. Fertilization was assessed 16~18 hrs after ICSI. Embryo development and pregnancy rates were analysed. Results: The fertilization rates were significantly different between OA and NOA patients (75.2% vs. 56.7%, p<0.05), however, embryo development did not differ between the groups (96.9% vs. 98.0%). Likewise, OA and NOA groups had no differences in their clinical pregnancy and delivery rates, 33.9% vs. 36.0% and 28.1% vs. 28.0%, respectively. With regard to sperm retrieved from fresh testicular tissue, fertilization rates were significantly different between the OA and NOA groups (76.4% vs. 52.9%, p<0.05); however, embryo development, clinical pregnancy and delivery rates were not different. For sperm retrieved from thawed testicular tissue, the fertilization rates were significantly different between the two groups (74.7% OA group vs. 65.6% NOA group, p<0.05); however, embryo development, clinical pregnancy and delivery rates were not different. Conclusions: Embryo development and clinical pregnancy did not differ in patients with obstructive and non-obstructive azoospermia, whether sperm retrieved from fresh and thawed testicular tissue were used, although the fertilization rates were different. Therefore, ICSI with sperm retrieved from fresh and thawed testicular tissue could achieve relevant clinical pregnancy results in patients with azoospermia.

• 대한생식의학회:학술대회논문집
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• 2003.12a
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• pp.130-131
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• 2003

• Journal of the Korean Society of Radiology
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• v.85 no.1
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• pp.217-221
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• 2024

Retroperitoneal ectopic pregnancy is a rare form of ectopic pregnancy. Owing to its rarity and nonspecific symptoms, diagnosing retroperitoneal ectopic pregnancy at the initial presentation poses a significant challenge. Typically, the diagnosis relies on non-radiation imaging modalities, such as ultrasonography and MRI, whereas CT is infrequently used. Herein, we report a rare case of a retroperitoneal ectopic pregnancy, which was diagnosed using CT.

• Clinical and Experimental Reproductive Medicine
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• v.33 no.4
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• pp.237-243
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• 2006

Objective: The aim of this study was to evaluate the efficacy of frozen-thawed ET in poor prognosis patients such as the old age (38~44 years; OA group) and the patients who did not achieve clinical pregnancy with the first fresh ET cycle (non-pregnant patients; NP group). Methods: Laboratory and clinical data were collected from fresh and frozen-thawed ET cycles of OA and NP group. Controlled ovarian hyperstimulation (COH) and conventional insemination or ICSI, in vitro culture and ET were performed by routine procedures. Supernumerary embryos were frozen by the slow freezing method, and frozen embryos were thawed by the rapid thawing method. Embryo development, pregnancy and implantation rates were statistically analyzed by Student t-test and chi square test Results: Mean ages were similar between fresh ET ($40.0{\pm}1.8$ years, n=206) and frozen-thawed ET ($39.9{\pm}1.9$ years, n=69) cycles in OA group. However, the clinical pregnancy and implantation rate of subsequent frozen-thawed ET significantly higher than those of fresh ET cycles (29.0% and 11.2% vs. 16.5% and 7.0%, p<0.05). In NP group, there was no difference in the mean age between fresh ET ($31.2{\pm}2.3$ years, n=40) and frozen-thawed ET ($31.9{\pm}3.1$ years, n=119) in subsequent cycles. The clinical pregnancy and implantation rates were similar between the subsequent fresh ET (42.5% and 22.6%) and the frozen-thawed ET (40.3% and 18.8%). Conclusion: In old age patients, higher pregnancy rate of frozen-thawed ET compared to fresh ET cycles in this study. It may be related that better uterine environments for implantation in frozen-thawed ET cycles than that of non-physiological hormonal condition in uterus of fresh COH cycles.