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Evaluation and Management of Antenatal Hydronephrosis
홍영권,이준호 대한소아신장학회 2015 Childhood kidney diseases Vol.19 No.1
Antenatal hydronephrosis (ANH) is one of the most common abnormal findings detected on prenatal ultrasound (US), and it has been reported in 1-5% of all pregnancies. The likelihood of significant postnatal pathologic abnormality in the urinary tract correlates with the degree of anterior-posterior diameter (APD) according to the gestational age. Detection of urologic anomalies prenatally permits fetal interventions that avoid complications in rare cases of bladder outlet obstruction with oligohydramnios even though their final benefits still remain controversial. There is no clear consensus on the extent and mode of postnatal imaging after a diagnosis of ANH. US is the mainstay of the postnatal evaluation and helps guide further testing with voiding cystourethrography (VCUG) and diuretic renography. Although most algorithms continue to recommend generous VCUG for identification of lower urinary tract anomalies, VCUG may be safely reserved for high grade ANH cases or any grade of ANH with dilated distal ureter without increasing the risk of urinary tract infection (UTI). There are conflicting studies about efficacy of postnatal prophylactic antibiotics. It still seems reasonable to consider use of a prophylactic antibiotic to prevent infant UTIs in high-risk populations, such as females and uncircumcised males with high grades of hydronephrosis, hydroureteronephrosis, or vesicouretral reflux.
UCC 동영상 편집 소프트웨어의 개선방안에 대한 연구 : 기능 및 사용자 인터페이스를 중심으로
홍영권 디자인융복합학회 2008 디자인융복합연구 Vol.7 No.1
UCC 동영상의 질적인 향상을 위해서 본 논문은 ucc 동영상 편집 소프트웨어 개선방안을 제시하고 있다. 본 연구에서 제시하고 있는 개선방안은 기능적인 측면, 사용자 인터페이스적인 측면, 편집 프로세스적인 측면으로 크게 3 개로 나뉘어 진다. 본 연구는 편집 소프트웨어의 기능 개선 방향으로 자동 영상클럽 생성, 파일보관 구성체계, 시나리오 템플레이트, 제작마법사 기능, 서비스 연동 라이브러리의 5 개의 기능 개선을 제안하고 있다. 또한 사용자 인터페이스에 대한 개선방안으로 학습의 용이성을 소프트웨어에 적용하는 것과 개선한 기능을 소프트웨어에 어떻게 수용해야 하는가에 대한 방안을 제안하고 있다. 그리고 기능과 사용자 인터페이스 개선방안을 적용한 편집 프로세스를 제안하고 있다. 본 논문은 초보자들도 쉽게 사용할 수 있는 편집기능을 제공함으로써 UCC 의 질을 항상시킬 수 있는 출발점을 제공하고 있다는 점에서 그 가치가 높다. 사용자 측면에서 제안된 편집 소프트웨어의 기능은 사용자의 작업효율을 크게 높일 수 있고 햄 2.0 시대를 맞아 누구나 콘텐츠의 소비자뿐만 아니라 콘탄츠의 공급자가 될 수 있게 만든다는 점에서 그 의의가 크다. Video editing software decisively affects the quality of the UCC movies and this research presents how to enhance today`s video editing software. It is explicated in three parts: function, user interface and editing process. Research presents five new functions to enhance video editing tools which are automatic movie clip generation, structure of file system, scenario template, editing wizard, internet service related library. Research proposes enhancement methods of user interface with the way of realizing easiness of study and how editing software include the new functions. Finally, research proposes a new editing process that implemented all features of the enhancement method about functions and user interface. Research offers the ultimate method to improve UCC video quality by providing editing features that even beginning can start using intuitively. The editing functionalities seriously consider the usability so users can benefit from improved work efficiency. In web 2.0, users who were contents consumers now can serve also as contents providers. Method of enhancement for video software offered in the research strives to fulfill above mentioned prospects.
홍영권,박동수,홍재엽,정재승,이상은,홍성규,정성진,장석흔,김재일 대한남성과학회 2009 The World Journal of Men's Health Vol.27 No.1
Purpose: We wanted to evaluate the therapeutic potential of a low dose of tamsulosin, as compared with doxazosin, for the treatment of premature ejaculation in men with lower urinary tract symptoms (LUTS). Materials and Methods: Ninety-six patients (mean age: 55 years) who had LUTS with premature ejaculation were randomly assigned to receive 0.2 mg of tamsulosin and 4 mg of doxazosin daily for a period of 3 months. Patients were evaluated by taking the medical history, the International Prostatic Symptom Score (IPSS) and the Male Sexual Health Questionnaire (MSHQ) for ejaculatory function. The intravaginal ejaculatory latency time (IELT) measured by the patient’s estimation and the sexual satisfaction ratio of both the partner and patient were investigated twice during the screening period and after treatment. At 3 months later, we assessed the differences in the IPSS score, the MSHQ score, the IELT and the sexual satisfaction ratio between the two groups. Results: The two α1-adrenoceptor antagonists had significant effects on the IPSS (p<0.05). However, we failed to find a statistically significant difference for each medication and the total MSHQ ejaculatory function score after medication in each group. The IELT was prolonged from 2.7±1.6 to 3.5±1.5 minutes and from 2.9±1.8 to 3.5±1.9 minutes in the tamsulosin and doxazosin groups, respectively. However, there was also no statistically significant difference of the IELT and the sexual satisfaction ratio in either group. Conclusions: For patients with premature ejaculation and LUTS, 0.2mg of tamsulosin improved the voiding symptoms, as assessed with the IPSS, as 4mg of doxazosin did, but neither medication seemed to be effective for the treatment of premature ejaculation.
홍영권,박동수 대한의학회 2009 Journal of Korean medical science Vol.24 No.4
Ureteroscopic lithotripsy using Swiss Lithoclast was performed in 411 cases from January 1996 to September 2007 in a single hospital. Medical records of 341 cases, in which Swiss Lithoclast was successfully applied, were available for this retrospective study. We used 9.5Fr and 10Fr Storz rigid ureteroscopes. A success was defined as being free of stone-related symptoms and residual stones larger than 2 mm. Sixty one stones were located in the upper ureter, 49 stones were in the mid ureter, and 231 stones were in the lower ureter. The overall success rate was 93.5%. The success rate of upper ureter stone (80.3%) was significantly lower compared with those of mid (93.8%) and lower (96.9%) ureter stones (P=0.001). The higher the calculi was located within the ureter, the more chance of upward migration there was (P< 0.001). The success rate in male patients was lower than in female patients without a statistical significance (P=0.068). The success rate decreased as the size of the stone increased (P<0.001), and as the degree of hydronephrosis increased (P=0.03). Perforation rates were 4.9%, 4.1%, and 2.6% from upper to lower ureter stone group. Ureteroscopic lithotripsy using Swiss Lithoclast is a safe and useful treatment modality for ureteral calculi.