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JYMS : Journal of Yeungnam Medical Science

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Hyun Soo Ahn 2 Articles
Effect of in vitro testicular spermatozoa culture on pregnancy outcomes: an experience at a single university hospital
Jisun Lee, Jung Hyeon Yoo, Jae Hun Lee, Hyun Soo Ahn, Kyung Joo Hwang, Miran Kim
Yeungnam Univ J Med. 2021;38(1):53-59.   Published online December 9, 2020
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  • 73 Download
  • 2 Crossref
AbstractAbstract PDF
There are no guidelines for the optimal incubation time or temperature to improve pregnancy outcomes in testicular sperm extraction-intracytoplasmic sperm injection (TESE-ICSI) cycles. We aimed to evaluate whether a 24-hour in vitro culture of testicular spermatozoa affects pregnancy outcomes in TESE-ICSI cycles.
This was a retrospective study of 83 TESE-ICSI cycles using testicular spermatozoa in 46 couples with male partners suffering from nonobstructive or obstructive azoospermia. Sperm retrieval was performed either on the oocyte retrieval (OR) day (65 cycles in 33 couples; group A) or on the day before OR (18 cycles in 13 couples; group B) followed by in vitro culture for 24 hours. The clinical characteristics and pregnancy outcomes, including the number of retrieved oocytes, fertilization rates, embryo transfer rates, implantation and clinical pregnancy rates, were compared between the two groups.
There were no differences in terms of clinical characteristics except for the levels of luteinizing hormone (LH) in males. Group B had higher LH levels than group A (4.56±1.24 IU/L vs. 3.67±1.07 IU/L, p=0.017). Group B showed higher fertilization rate (72.4±32.1% vs. 59.2±21.7%, p=0.045), implantation rate (35.0±34.1% vs. 14.0±21.5%, p=010), pregnancy rate per cycle (80% vs. 39%, p=0.033), and clinical pregnancy rate per cycle (80% vs. 37.5%, p=0.024) than those of group A.
Testicular sperm retrieval performed on the day before OR followed by in vitro culture can potentially improve pregnancy outcomes.


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    International Journal of Computational Intelligence Systems.2023;[Epub]     CrossRef
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Electromagnetic Fields in General Hospital.
Sei One Shin, Sang Mo Yun, Hyoun Jin Shin, Hyun Soo Ahn, Hee Deok Ahn
Yeungnam Univ J Med. 2004;21(2):167-176.   Published online December 31, 2004
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  • 3 Download
AbstractAbstract PDF
Electromagnetic fields (EMF) are ubiquitous in modern society including medical field. As the technology of medical instruments and telecommunications has developed rapidly, it has influenced on our lives in many ways. Modern medical practice requires high quality medical equipments, which have a great deal of electromagnetic interference and susceptibility. The purpose of this study were to evaluate electromagnetic condition under usual clinical condition and to suggest a practical guideline in general hospital. MATERIALS AND METHODS: The actual state of the electromagnetic interference in the medical field was studied under usual clinical conditions including operating rooms, intensive care units, magnetic resonance imaging unit, and hyperthermia unit. RESULTS: There was considerable noise as a result of electromagnetic fields from medical equipments including electrosurgical units and hyperthermia unit, and cellular phones, which could induce serious functional derangements of functioning medical devices. CONCLUSION: It will be necessary to evaluate the individual electromagnetic situations under various medical conditions and to define a limited zone for cellular phone as well as reposition medical equipments to secure a safer medical practice and to minimize electromagnetic interference.

JYMS : Journal of Yeungnam Medical Science