Mycolasma pneumoniae 감염에 의한 뇌경색증 1례

안영준,최기철,양은석,박영봉,박상기,문경래,김영숙,Ahn, Young Joon,Choi, Ki Cheol,Yang, Eun Seok,Park, Yeong-Bong,Park, Sang-Gi,Moon, Kyung Rye,Kim, Young Sook 대한소아감염학회 1998 Pediatric Infection and Vaccine Vol.5 No.2

Mycoplasma pneumoniae infection is usually confined to the respiratory tract but it can cause a variety of extrapulmonary manifestations such as rashes, myalgia, hemolytic anemia, cerebral infarction, transverse myelitis, cerebellar ataxia, Guillain-Barre syndrome and meningoencephalitis. Neurologic complications of Mycoplasma pneumonia have been rarely reported until now. Cerebral infarction as a complication of mycoplasma infection in children has been very rarely reported. In our case, in a young girl with M. pneumoniae infection, a cerebral infarct resulted in persistent and significant neurological dysfunction. We report a 11-year-old girl with cerebral infarction associated with clinical and serologic evidence of Mycoplasma infection.

Focus On D-TV-펄서스테크놀러지: DDC(Digital to Digital Converter) 오디오 프로세서

안영준,An, Yeong-Jun IT-SOC협회 2006 IT SOC magazine Vol.11 No.-

Clinical Study of Rhabdomyolysis After Exercise

안영준,이승림,유재호,주민홍,김성완,박지만,양보규,Ahn, Young-Joon,Yi, Seung-Rim,Yoo, Jae-Ho,Zoo, Min-Hong,Kim, Seong-Wan,Park, Ji-Man,Yang, Bo-Kyu Korean Orthopaedic Society for Sports Medicine 2007 대한정형외과스포츠의학회지 Vol.6 No.2

Purpose: This study evaluate clinical findings & management of rhabdomyolysis after strenuous activities in military police recruit. Materials and Methods: This study was carried out from June $1^{st}$, 2004 and May $23^{nd}$, 2005. The study subjects were 13 military police recruit patients who were admitted to our hospital with intractable muscle pain and swelling, and had suspicions of Rhabdomyolysis. The patients were given various blood tests (CPK, CK-MB, AST, BUN/Cr, and Electrolyte) and clinically observed. The patients were all males, and their average age was 20 $(19\sim21)$ years. Seven cases were due to push-up exercises, 5 was due to a soccer game, and 1 was due to riot control activities. The patients complained of swelling and tenderness in various parts of the extremities. Four complained of swelling and tenderness in forearm, 3 in upper arm, 1 in shoulder, and 5 in lower extremity. The diagnosis of rhabdomyolysis was made if the patient complained clinical symptom and had a blood CPK level of above 1,000 IU/L at the time of admission. Patients who took medication or had medical problem were excluded from this study. Bone scans were taken of all patients 4 hours after giving 99mTc-MDP 20mCi intravenously. Treatment was bed rest and fluid therapy. Patients who complained of excessive pain were given splint immobilization. Results: The average hospitalization day for the 13 patients was 20 days ($14\sim42$ days). Excluding one patient who exhibited ARF at time of admission, all patients showed a decrease of blood CPK below 1000 IU/L at an average hospitalization time of 8 days ($2\sim11$ days). The patient with ARF recovered after hemodialysis and fluid therapy. Conclusion: Patients complaining of swelling and severe muscle pain after excessive exercise or training should be suspicious of exercise induced rhabdomyolysis, and should be given blood tests and fluid therapy immediately.

학동기 소아에서 반복성 복통과 우울 성향과의 관계

안영준,문경래,Ahn, Young-Joon,Moon, Kyung-Rye 대한소아소화기영양학회 2002 Pediatric gastroenterology, hepatology & nutrition Vol.5 No.2

Purpose: Recurrent abdominal pain (RAP) is common, affecting between 7% and 25% of school-aged children and young adult. This study was designed to assess the relationship between RAP and depressive trends in school-aged children. Methods: In 1999, We surveyed 1,181 elementary school children (566 boys and 615 girls) whose ages ranged from 9 to 12 years. The degree of depression was compared between the group with RAP and normal control group without RAP according to Korean Children's Depression Inventory (CDI) of Kovacs and Beck. Results: The number of the group with RAP was significantly higher in female (25.7%) than in male (18.9%). The most common site of abdominal pain was periumbilical. The mean depression score in the group with RAP was higher than that of the control group. The depression score was significantly higher in the group with RAP who has frequently pain and additional symptoms. The depression score was significantly higher in the group with RAP who prefered to play alone, did not enjoy going to school and had few friends than in the group with RAP who had a lot of friends, had active and meticulous characters. The depression scores were not significantly different according to the duration of abdominal pain, the onset time of pain, and the day of pain in the group with RAP. Conclusion: The depression score of the group with RAP was higher than that of normal group. So, there is relatively a specific association between childhood RAP and depression in school aged children. It is good for physicians to consider psychological support in the treatment of childhood RAP.

위식도 역류질환 환아에서 보행성 이중채널 식도내 산도 검사에 대한 연구

안영준,문경래,Ahn, Young-Joon,Moon, Kyung-Rye 대한소아소화기영양학회 2000 Pediatric gastroenterology, hepatology & nutrition Vol.3 No.1

Purpose: The aim of this study was to determine how much acid exposure would occur in the proximal esophagus, both in normal and in patients with abnormal distal esophageal acid exposure. Methods: Fourty-six patients with suspected GER were classified into two groups, 24 patients with pathological distal reflux (group I); 22 patients with normal distal reflux (group II). The ambulatory dual-probe esophageal pH monitoring was performed for 18-24hr. The abnormal reflux was defined when the percent of time that pH was below 4.0 exceeded the 95th percentile of normal value. Results: The siginficant differences between distal and proximal esophageal pH recordings in group I persisted for all parameters except for the longest episode, but didn't persist in group II. At the distal esophageal site, the median percent time with pH<4.0 in group I was 19.3 and significantly higher than at proximal site. Half of patients with pathological distal reflux also had proximal acid reflux. Correlation coefficients between the distal and proximal esophageal sites in group I of the number of reflux episodes and time of the longest episode were 0.451 and 0.646 respectively. Conclusion: The 50 percent of patients with pathological distal acid reflux also had abnormal acid exposure in the proximal esophageal site. Therefore, we recommand simultaneous pH recordings from dual probe esophageal sites in children with gastroesophageal reflux.

요추부 내시경 절제술에서 작업 도관의 삽입점과 접근각

안영준,노정호,허정규,양보규 대한척추외과학회 2008 대한척추외과학회지 Vol.15 No.4

Study Design: A retrospective study. Objectives: We report the efficacy of the entry point and approach angle of a working cannula using preoperative prone abdominal computer tomography (PACT). Summary of Literature Review: To date, there are no reports on the entry point and approach angle of a working cannula when performing transforaminal percutaneous endoscopic lumbar discectomy (TPELD) with consideration of the individual anatomic variations and characteristics of herniated disc and surgical instruments. Materials and Methods: Cases of herniated intervertebral discs from L4-5, who have previously undergone PACT before TPELD, were included. A total of 25 patients were observed over a 1 year period. The entry point and approaching angle of the working cannula with PACT were calculated, and the results were applied to the TPELD. The clinical results were assessed 1 month after surgery using the VAS, ODI and MacNab criteria, and were confirmed by a radiology and MRI examination. Results: The preoperative measured data using PACT showed that the mean approaching distance and mean approaching angle of the working cannula were 12.4 cm and 75.4 degree, respectively. The VAS improved from a mean of 8.1 preoperatively to a mean of 2.3 12 months after surgery. The ODI improved from a mean of 59 preoperatively to a mean of 24 at 12 months after surgery. According to the MacNab criteria, all patients were classified as either excellent and good during the follow up periods. The extruded disc of all patients had been well removed according to the MRI scan performed 1 month after surgery. Conclusions: The scientific approach method using PACT based on the characteristics of patients and surgical instruments can be performed easily and accurately, and access and decompress the extruded disc directly.

CaCO3 첨가법에 따른 재생 ONP의 특성변화

안영준,남성영,엄남일,안지환,한춘 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.2

In order to improve the refresh rate of old newspaper(ONP), PCC shape-controlling experiments were carried out. The effect of aPCC polymorph on improving the quality of old newspaper was studied for a transformation from waste paper to eco-friendly paper. The synthesis of PCC consists of an in-situ process and a loading process to enhance the refresh rate of old newspaper. Thecharacteristics between the in-situ process and the loading process could be analysed by SEM analyses of coated fiber surfaces. Theretention rate ranges from 65 to 67% after the application of the in-situ process, and that after the loading process ranges from 55 to58%. The retention rates thus show a difference of about 7-10%. In addition, the whiteness and ERIC characteristics of the in-situprocess gave more efficient results than those of the loading process.

흡인형 췌관 스텐트를 이용한 췌-공장 문합술의 초기 결과

안영준,황기태,허승철,정인목,정중기 대한외과학회 2006 대한외과학회 학술대회 초록집 Vol.2006 No.5

Audible Doppler Ultrasound(8 MHz)를 이용한 소아와 영아에서 중심정맥 도관 삽입술에 관한 연구

안영준,정진영,홍수종,Ahn, Young Joon,Jung, Jin Young,Hong, Soo-Jong 대한소아청소년과학회 2002 Clinical and Experimental Pediatrics (CEP) Vol.45 No.9

Purpose : Percutaneous cannulation of the central vein in children and infants may be technically difficult and can cause serious complications. There are many techniques to improve the success rate and to decrease the complications in central vein cannulation. This study was undertaken to determine whether audible Doppler guidance can help operators improve the results of central vein cannultion in pediatric ICU. Methods : A total of 46 central vein cannulations were performed using audible Doppler guidance technique. Using an 8-MHz Doppler ultrasound device(Pocket-Dop II. iMex. USA), the artery and the vein were identified by their characteristic Doppler sounds. Results : There was a total of 46 patients with 20 boys and 26 girls, respectively. The mean age was $3years{\pm}45months$(range : 1-156 months). The number of infants was 18 and the mean age was $6.3{\pm}3.8$ months(range : 1-12 months). The most common site of central vein cannulation was the right internal jugular vein(63%). The cannulation was successful in 44 out of 46 procedures(96%). The success rate at the first attempt was 59% with 48% in the patients who had the history of previous cannulation and 70% in the patients who did not, respectively. The success rate in infants was 94%(17 out of 18). The average access time was $5.2{\pm}8.3$ minutes in children contrary to $7.5{\pm}10.3$ minutes in infants. There were no serious complications, but six patients had complications including four hematoma, one arterial puncture, and one pneumothorax. Conclusion : This central vein cannulation using Doppler guidance may improve the success rate of central vein cannulation and decrease the development of serious complications in infants and children.

빔 출력 특성 개선을 위한 빔 프로파일 모니터링 시스템 개발

안영준,허민구,양승대,신대섭,이동훈,An, Young-jun,Hur, Min-goo,Yang, Seung-dae,Shin, Dae-seob,Lee, Dong-hoon 한국정보통신학회 2015 한국정보통신학회논문지 Vol.19 No.11

방사선 진단에 사용되는 방사성동위원소 중 사이클로트론을 이용해 생산되는 방사성동위원소는 사이클로트론에서 인출된 양성자 빔이 타겟에 조사될 때 빔의 크기와 모양, 조사되는 위치에서 빔 균일 정도에 따라 생산 수율에 영향을 받는다. 이에 본 논문에서는 사이클로트론 빔 라인에서 빔의 단면을 측정할 수 있는 BPM(Beam Profile Monitor)장치를 개발하였다. LabView로 BPM장치를 원격 제어할 수 있도록 구성하였으며 BPM 프로그램을 이용하여 X축과 Y축으로 텅스텐 와이어를 스캔하면서 얻은 빔의 수치 정보를 2차원 그래프와 3차원 빔 분포 그래프로 표시하여 해석을 쉽게 모니터링 할 수 있도록 하였다. 빔을 측정하는 데 걸리는 시간은 스텝 모터 구동 속도가 2000pps일 때 37초가 걸린다는 것을 확인 할 수 있었다. 측정된 빔 분포정보를 기반으로 빔 재조정을 통해 빔 분포를 최적화함으로써 방사성동위원소 생산 수율을 극대화 시킬 수 있고 공급 안정화에도 기여하리라 본다.