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Fontan Procedure이후 심장혈관계의 혈류역학적 특성에 관한 수치적 연구
고형종,김경훈,심은보 金烏工科大學校 1998 論文集 Vol.19 No.-
The aim of this study is to develop a computational model representative of the circulation in patients with a uni-ventricular heart sugically palliated by a total atrio-pulmonary connection. A model of the cardiovascular system is built using standard Iumped components such as resistance, voltage source, check valve and capacitor. We assume that there is only an atrium in the right heart part of the model after the Fontan procedure. In this study, baroreceptor reflex and cardiopulmonary reflex control model are implemented to explain the autoregulation of cardiovasculasr system. Another important aspect of the model is to utilize a beat-to-beat approach in sensing pressure deviations, in transferring these to autonomous nerve system, and in regulating the control variables such as heart rate, heart contractility, peripheral resistance, and venous tone. To verify the present code. we have computed the LBNP(Lower Body Negative Pressure)simulation and compared its results with the existing experimental data. The hemodynamic changes after the Fontan procedure are simulated and compared with the existion clinical data. After Fontan procedure, heart rate, CVP(Central venous pressure) and diastolic pressure increase whereas pulse pressure and systolic pressure go down. Increased CVP, induced by the removal of right ventricle, makes the heart rate go up via baroreceptor reflex control. The effects of known hazardous exposures after Fontan procedure are also investigated. We assume increased peripheral resistance to simulate the situation of exposure to cold. In this case increased arterial pressure induces the decrease of heart rate. which results in decrease of cardiac output. On the other hand, exposure to heat increases heart rate and cardiac output. Hemorrhage in cardiovascular system results in increase of ABP(Arterial Blood Pressure) and decrease of heart rate and cardiac output.
제2형 당뇨병 환자에서 우연히 발견된 기종성 방광염 1례
박보민,김윤정,이영태,노정현,권수경,김동준,고경수,이병두,임경호,이순희,박정현 白中央醫療院 2005 仁濟醫學 Vol.26 No.1
Emphysematous cystitis is an uncommon disease in which bacterias produce gas within the bladder wall and surrounding tissue. Patients with diabetes, neurogenic bladder and chronic urinary tract infection are predisposed to the disease. It is usually caused by E.coli and Klebsiella. Severity of illness ranges from an asymtomatic condition to life threatening cystitis. Succesful management depends on early diagnosis with correction of underlying causes, administration of appropriate antibiotics, establishment of adequate bladder drainage and surgical excision of involved tissue when required. We report a case of 52-year-old woman who did not compain of symtoms of cystitis but epigastric pain, nausea, and vomitting. Emphysematous cystitis was revealed on the abdominal X-ray series incidentally. CT scans of the pelvis showed mottled gas bubble within the bladder. After treatment, the symtoms subsided and plain abdominal film showed no evidence of gas shadow in the pelvic cavity.
( Bo Ra Lee ),( Yu Mi Ko ),( Mi Hee Cho ),( Young Ran Yoon ),( Seung Hee Kye ),( Yoo Kyoung Park ) 한국임상영양학회 2016 Clinical Nutrition Research Vol.5 No.2
This study investigated the effect of switching normal diet to vegetarian diet rich in vegetables and fruits for school foodservice and home meal on the nutritional status, bowel habit improvement and stress reduction of teachers and adolescents. A total of 40 research subjects (26 students, 14 teachers) from one middle school voluntarily participated in the research. Questionnaire surveys and blood analysis were conducted before and after a 12-week vegetarian diet period. The participants were asked on their dietary habit, bowel habit and stress measurement. After 12 weeks, reduction of BMI (kg/m²) in the students (p < 0.05) and reduction of TC (mg/dL) in both teachers and students (p < 0.05) were observed. Also reduction of LDL-C (mg/dL) was observed in the teachers (p < 0.05) whereas serum calcium and Vitamin B12 was increased in the students and teachers (p < 0.005). The teacher`s stress level was reduced (p < 0.05) after the 12-week vegetarian diet. As for the changes in bowel habit, the number of the students and teachers classified as experiencing functional constipation was decreased respectively from 10 to 7, from 7 to 5. Based on the result, it is considered that the vegetarian diet rich in fruits and vegetables improved general health status of study subjects suggesting that such a dietary habit would substantially contribute to improving nutritional status and bowel habit.
Vitamin D deficiency is associated with disease activity in patients with Crohn’s disease
Kyoung Ho Ko,김유선,Bo Kyung Lee,Jong Hyun Choi,Yong Moon Woo,Jin Young Kim,Jeong Seop Moon 대한장연구학회 2019 Intestinal Research Vol.17 No.1
Background/Aims: Previous data suggest that vitamin D has a significant role in inflammatory bowel disease (IBD). We investigated the incidence of vitamin D deficiency in Korean patients with IBD and the correlation between serum vitamin D level and disease activity. Methods: We retrospectively analyzed the medical records of patients with IBD whose serum vitamin D levels were checked. Deficiency of 25-hydroxyvitamin D was defined as <20 ng/mL. Disease activity was evaluated using the partial Mayo score for ulcerative colitis (≥2 defined as active disease) and Harvey-Bradshaw index for Crohn’s disease (≥4 defined as active disease). Results: We enrolled 87 patients with IBD (ulcerative colitis [UC], 45; Crohn’s disease [CD], 42). Among them, 65.5% (57/87) were men, with a mean age of 44.9±15.1 years (range, 18–75 years). The mean duration of disease was 4.7±4.8 years (range, 0.1–17.1 years). Vitamin D deficiency was found in 73.6% (64/87) of patients with IBD. Patients with IBD (mean vitamin D level, 16.3±9.0 ng/mL) showed lower vitamin D level than the healthy control group (mean vitamin D level, 20.4±7.0 ng/mL), with no statistically significant difference (P=0.136). Disease activity was inversely correlated with vitamin D deficiency in patients with CD (P=0.007). However, no correlation was observed in patients with UC (P=0.134). Conclusions: Approximately 75% of Korean patients with IBD showed vitamin D deficiency state. Vitamin D deficiency is associated with disease activity, particularly in patients with CD. (Intest Res 2019;17:70-77)
Effects of Nitrogen Level and Seedling Number on Panicle Structure in Japonica Rice
Bo Kyeong Kim,Ki Young Kim,Myung Kyu Oh,Mun Sik Shin,Jae Kwon Ko,Jae Kil Lee,Hee Kyoung Kang 韓國作物學會 2003 한국작물학회지 Vol.48 No.2
Four different rice varieties, Sindongjinbyeo, Dongjin #1, Saegyehwabyeo, and Iksan 467, were transplanted under three different nitrogen levels and two different seedling numbers per hill to obtain basic information on panicle traits under different cultural conditions and to propose the ideal panicle structure in Japonica rice. Sindongjinbyeo and Iksan 467 were characterized by more primary rachis branches (PRBs) per panicle and more grains on PRB than other cultivars. The two varieties also had fewer secondary rachis branches (SRBs) per PRB and fewer grains on SRB per PRB. These characteristics, consequently, resulted in higher ripened grain rate, contrary to that of Dongjin #1 and Saegyehwabyeo. In the correlation coefficient analysis, PRB number per panicle and grain number on PRB per panicle were positively correlated with ripened grain rate, while SRB number per panicle, number of grains on SRB per panicle, SRB number per PRB, number of grains on SRB per PRB and grain number per panicle were negatively correlated with ripened grain rate. Therefore, the number of grains on PRB per panicle, SRB number per PRB and the number of grains on SRB per PRB were the appropriate criteria for determining and achieving higher ripened grain rate in rice. High ripened grain rate over 90% was obtainable with over 12.5 PRBs per panicle and 63 grains on PRB per panicle, and with under 1.7 SRBs per PRB, 5 grains on SRB per PRB, 130 grains per panicle, and 14 panicles per hill. The study recommended that for over 90% high ripened grain rate, the critical limiting factors should be under 2 SRBs per PRB, 6 grains per PRB, and 130 grains per panicle, irrespective of the PRB number per panicle and the number of grains on PRB.
Cutaneous peripheral nerve sheath tumors in 15 dogs
Ko, Seung-Bo,Song, Kyoung-Ok,Kang, Sang-Chul,Kim, Jae-Hoon The Korean Society of Veterinary Science 2014 大韓獸醫學會誌 Vol.54 No.1
Peripheral nerve sheath tumors (PNSTs) are heterogeneous tumor groups of peripheral nerves that originate from either Schwann cells or modified Schwann cells, fibroblasts, or perineural cells. In this study, signalment and clinical data such as tumor location and size were evaluated for 15 cases of PNSTs collected from local animal hospitals. The mean age of dogs with malignant PNST was higher than that of dogs with benign PNST. Additionally, the male to female ratio in dogs with PNST was 1 : 4. In dogs with PNST, the primary sites of involvement were the hindlimb, forelimb, around the mammary glands, the neck, and the abdomen. Histiopathologic examination revealed that eight PNSTs were benign and seven were malignant. The tumor cells were composed of loosely to densely arranged interlacing bundles and wavy spindle cells arranged in short bundles, palisading, and whirling. High mitotic figures, local invasion, multifocal necrosis and atypical multinucleated giant cells were observed in malignant PNST cases. All PNSTs showed immunoreactivity for vimentin and S-100. However, only 93.3% and 73.3% were immunoreactive for NSE and GFAP, respectively. Overall, these results indicated that immunohistochemical markers such as vimentin, S-100 and NSE could help confirm the diagnosis of canine PNSTs.