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이병권(Byoung Kwon Lee),이종화(Jong Hwa Lee),한지숙(Jee Sook Hahn),고윤웅(Yun Woong Ko) 대한내과학회 1998 대한내과학회지 Vol.55 No.6
Pseudopolycythemia is a situation in which a raised concentration of hemoglobin in circulating blood, with a red cell mass within normal range, while the plasma volume may be reduced in the absence of overt fluid loss. Relative, apparent, stress, or spurious polycythemia are commonly used synonyms for the same condition. It has been emphasized the association of pseudopolycythemia with hypertension, obesity, stress, and heavy cigarette smoking, especially in middle-aged men. We experienced 3 cases of pseudopolycythemia with several risk factors. They had complained of mild exertional dyspnea, palpitation, dizziness, and paresthesia of extremities. These symptoms were successfully relieved by stress reduction, stopping of smoking, and abstaining from drinking.
크롬친화성세포종과 비슷한 증상을 동반한 급성 간헐성 포르피리아
이병권(Byoung Kwon Lee),배희동(Hee Dong Bae),박효진(Hyo Jin Park),정준근(Jun Keun Jung),정준표(Jun Pyo Chung),이관식(Kwan Sik Lee),이상인(Sang In Lee),박인서(In Suh Park) 대한소화기학회 1997 대한소화기학회지 Vol.29 No.1
Acute intermittent porphyrla(AIP) is a disorder that results frorn partial deficiency of porpbobi- linogen dearninase an has varlable clinical manifestations, such as acute abdominal pain, vomiting, nausea, constipation, perlpheral neuropathy, seizure, abnormal psychic symptoms, respiratory failure, tachycardia, and hypertension. If cases present severe acute hypertension, their clinical signs may mimick pheochromocytoma and the diagnosis of AIP would be delayed. We experienced a case of acute intermittent porphyria presenting with acute hypertension, mimicking pheochromo- cytoma in a 35 year-old female patient. She had history of two admissions to different hospitals with acute hypertension and abdominal pain. An extensive investigations had been done but no specific diagnosis was made. She had previously responded well to atenolol but after continuous treatement this led to hypotention. Her blood pressure was 210/140mmHg in both arms at admision to this hospital. She complained of acute abdominal pain and constipation, and she also had psychotic episodes. She had intermittent severe hypertension with the feature of pheochro- mocytorna. Tests for pheochromocytoma(including 24h urinary catecholamines, clonidine-inhibition test) were negative. Apart from slightly increased urinary excretion of catecholamines on one occasion, her symptoms were provoked by starvation and emotional stress and neurologic exami- nation revealed peripheral neuopathy. A screening test for porphobilinogen was strongly positive, but tests for uroporphyrin and coproporphyrin were negative. AIP was confirmed by clinical features and increased 24 hour urine delta-aminolevulinic acid(60.2 mg/1). Also, screening test for porphobilinogen was strongly positive in her mother and her brother. Supportive treatment with high glucose solution infusion and cimetidine resulted in symptomatic recovery and she was discharged after being educated on precipitating factors. The presenting feature of acute hypertension in this case baffled several doctors and the diagnosis of AIP was long delayed. AIP should be considered as one of the differential diagnosis of acute hypertension, especially when pheochrornocytoma is suspected but cannot be demonstrated. (Korean J Gastroenterol 1997;29: 113- 117)
관동맥 질환에서 혈청 Troponin T 의 임상적 의의
이병권(Byoung Kwon Lee),권혁문(Hyuck Moon Kwon),박현영(Hyun Young Park),박광주(Kwang Joo Park),김현승(Hyun Seung Kim),최종락(Jong Rak Choi),송경순(Kyung Soon Song) 대한내과학회 1996 대한내과학회지 Vol.50 No.1
Objectives: Although the diagnosis of coronary heart disease is usually straight forward, conventional diagnostic tests, such as CK, CK-MR, LDH, and AST have several drawbacks. The diagnostic efficiency of these conventional thests is disappointingly low, especially in minimal myocardial damage. l herefore, there has be necessity of more sensitive and specific diagnostic thest. Recently, cardiac TnT (TnT) was introduced with better sensitivity, specificity, and more wide diagnostic window. So we analyzed distribution of TnT in control, release kinetics, diagnositic significance of TnT in coronary heart disease including unstable angina and acute myocardial infarction, and efficiency of TnT as a marker of reperfusion in acute myocardial infarction. Methods: We tested cardiac TnT in 40 normal healthy subjects and 25 extracardiac traumatic patients as control group. We also tested cardiac TnT in 34 patients with acute myocardial infarction and 27 patients with unstable angina. We evaluated the distribution and serial change of cardiac TnT with other cardiac enxzymes after chest pain onset, the discriminant power of Tnl in discriminating of reperfusion after thrombolytic therapy in patients with acute myocardial infarction with conventional coronary angiography and the correlation between release kinetics of TnT and left ventricular ejection fraction with echocaroliography. Results: 1) In control group, all 65 cases serum TnT value were less than 0.2㎍/L. And its specificity (100%) and sensitivity in diagnosis of coronary heart disease including untable angina(acute myocardial infarction: 100%, unstable angina 70.4%) was better than those of other cardiac enzymes, such as CK, CK-MB. 2) In patient group, the release pattern of cardiac TnT was in bimodal curve pattern, while the pattern of other cardiac enzymes was in unimodal pattern. 3) In acute myocardial infarction, the first peak value of cardiac TnT appeared siginificantly earlier (9.53±2.36 hr in stable-reperfused group, 13.40±1.92 hr in non-reperfused group of acute MI than that of caridac enzymes; CK(17.65±6.48 hr in stable-reperfused group 27.53±10.26 hr in non-reperfused group), and CK-MH (16.84±7.93hr in stable-reperfused group, 24.33±10.36 hr in non-reperfused group of acute MI)(p<0.01). And troponin T was continuously increased above the cut-off value during the test period, so the diagnostic window of TnT was longer than other cardiac enzyme. 4) In acute myocardial infarction, cardiac TnT showed better discriminant power above 80% for reperfusion than those of CK(67.65%) and CK-MB (58.82%) In stable reperfused group of acute MI, cardiac TnT showed significant correlation with left ventri- cular ejection fraction(absolute value of r >0.6, p< 0.001). Conclusion: Cardiac troponin T was a good diagnostic marker for coronary heart disease including unstable angina and acute myocardial infarction with better sensitivity and specificity, for discriminating of reperfusion after thrombolytic therapy, and for the prognosis of remnant left ventricular global systolic function
Bicycle Ergometer를 이용한 저강도 운동이 뇌혈관 장애 환자의 혈소판에 미치는 영향
이병권(Byoung Kwon Lee),조철훈(Chul Hun Cho),한동욱(Dong Wook Han) 한국사회체육학회 2004 한국사회체육학회지 Vol.0 No.22
The purpose of this study was to investigate the effects of low intensity exercise with Bicycle Ergometer on the Platelet in the cerebrovrovascular Diseases Patients. 14 Patients selected as subjects. The experimental Patients were trained about 25minuten by bicycl ergometer. The date were analyzed with frequency, independant t-test, paired t-test using SPSS PC(ver.10.0). The results of this study were as follows: After a 25minuten bicycl ergometer training, Platelet count was increased(p<0.05). After a 25minuten bicycl ergometer training, Mean platelet volume was decreased(p<0.05).
스포츠 테이핑이 근 피로 유발에 따른 슬관절의 위치감각 및 자세동요에 미치는 영향
이병권(Byoung Kwon Lee),천승철(Seung Chul Chon),우희순(Hee Soon Woo) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.41
This study purposes at applying knee joint taping to prevent muscle fatigue and maintain postural stability. Twenty six subjects were randomly sampled among healthy people. To cause muscle fatigue, isokinetic exercise, which is a repetition of flexion and extension knee joint to 180°/sec, was performed 50 times per person. Position sense and postural sway were measured at pre-fatigue, post-fatigue as well as during the taping application. Analysis has carried out by means of one-way ANOVA with repeated measures at the significance level of α=0.05 to detect statistic significance. The results of this study were as follows: it was found that the generation of lower extremity muscle fatigue significantly affects on position sense and postural sway(p<0.05). The application of taping to the knee joint significantly affects position sense and postural sway(p<0.05). Fatigue has negative influences on daily activities that people do such as playing sports, and it also limits the level of rehabilitation exercise therapy. People commonly get injured towards the end of sports games when they undergo muscle fatigue. Therefore, the results suggest that proper sports taping is crucial to keep game players and people from muscle fatigue.