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조영관,김성환 대한상부위장관ㆍ헬리코박터학회 2014 Korean Journal of Helicobacter Upper Gastrointesti Vol.14 No.2
Achalasia is a rare primary motor disorder of the esophagus. Achalasia is characterized by insufficient lower esophageal sphincter relaxation and loss of esophageal peristalsis. The patients present with symptoms such as dysphagia, regurgitation and chest pain. The diagnostic tools of achalasia include esophageal manometry, esophagogram, and endoscopy. Esophageal manometry is the gold standard however endoscopy and esophagogram plays complementary roles for diagnosis of achalasia. Endoscopy is essential to rule out pseudoachalasia and mechanical obstruction before diagnosis of achalasia. Esophagogram is recommended to assess esophageal emptying and gastroesophageal junction morphology in those with equivocal esophageal manometry findings.
응급센터에 내원한 음성 혈뇨 요로 결석 환자군의 임상양상 및 경과
조영관,이정훈,김종원,김진용,이경룡,홍대영,백광제,박상오 대한응급의학회 2013 大韓應急醫學會誌 Vol.24 No.5
Purpose: To determine the clinical features of urolithiasispatients;specifically negative hematuriapatients (NHP) versus positive hematuria patients (PHP) in an emergency department (ED). Methods: Patients with urolithiasis who had visited an ED over the past two years were retrospectively analyzed. Only patients analyzed through both urinalysis and computed tomography were included (1005 patients). NHP was present in 125(12.4%) of these patients. The clinical features of NHP and PHP were assessed in regard to several factors:sex, age, onset to ED visit time, associated symptoms, costovertebral angle tenderness (CVAT), stone size, stone location, length of stay in the ED, repeated drug rate,admission rate, and revisit rate within 72 hours. Results: There were no significant differences in sex, age,onset to ED visit time, associated symptom, CVAT, and stone size between NHP and PHP. However, in NHP there was a slight dominance in renal and ureterovesical junction (UVJ) according to stone location. Compared with PHP,NHP increased the length of stay in the ED (150.0±52.3min vs. 132.7±48.6 min; p=0.001), repeated drug rate (80% vs. 69.4%; p=0.015) and admission rate (12.8% vs. 6.4%; p=0.015). There was no significant difference in revisit rate within 72 hours between NHP and PHP (8.3%vs. 4.7%; p=0.161). Conclusion: Compared with the conventional PHP, NHP increased the length of stay in an ED, increased the repeated drug rate, and was associated with a high admission rate in an ED setting.
황용강수계에서의 (黃龍江水系) 저서동물의 (底棲動物) 계절적 분포와 생물학적 수질평가에 관한 연구
조영관,배석진,백순기,나철호 ( Young Gwan Cho,Seok Jin Bae,Soon Ki Baik,Chul Ho Ra ) 한국하천호수학회 1996 생태와 환경 Vol.29 No.3
The benthic macroinvertebrates in the Hwangryong river occurred 51 species, 42 genera, 26 families, 10 orders, 5 classes in 3 phyla. Among them, aquatic insects containing 44 species were the major group comparing 84.6% of the whole. In particular, a great many Ephemeroptera containing 17 species occurred and Megaloptera were found only in 2 species. Also, there were 4 species of Trichoptera. The comparison of species at each site revealed the largest number of 29 species at site 2 and 3 respectivly, and the smallest was 18 species at site 1. The seasonal number of collected species were similar, as followers; 30 species occurred in winter, 25 species in spring, 28 species in summer, and 22 species in autumn. On comparing individual numbers in this survey, Ephemeroptera were the highest (50%) and Trichoptera were 37%. The most dominant species belonged to Trichoptera and Ephemeroptera. Above all, Uracanthella rufa and Cheumatopsyche brevilineata were dominant. Dominant indices ranged from 0.46 to 0.94. Species diversity indices ranged from 1.04 to 3.00. According to the saprobic system based on the species diversity indices of benthic macroinvertebrates, water quality was β-mesosaprobic in each site. The biological water quality as biotic indices was evaluated from α- to β-mesosaprobic, the pollution indices evaluated β-mesosaprobics, the simple water quality evaluation revealed secondary water quality criteria and the GPI evaluated ranged from oligosaprobics to β-mesosaprobics. The biological water quality evaluation by these indices proved similar to the results of chemical analysis.