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식도증상을 호소하는 환자에서 식도내압검사 소견 - 175 명의 환자에서 -
정양호(Yang Ho Jung),손봉국(Bong Gook Son),임종채(Zhong Chai Lim),나용호(Yong Ho Nah) 대한내과학회 1989 대한내과학회지 Vol.36 No.1
N/A To evaluate the relationship between symptoms and esophageal motility disorders, esophageal motility tracings were performed in patients with symptoms of chest pain, dysphagia, lump sense and dyspepsia. Fifty-two (56 of 93 patients with chest pain had abnormal motilities, as did 39 (67%) of 58 patients in the dysphagia group, and 16 (30%) of 53 patients in the lump sense and dyspepsia group. Nutcracker esophagus, nonspecific esophageal motility disorders and hypertensive lower esophageal sphincter were the more frequent esophageal motility disorders than the classic motility disorders such as achalasia and diffuse esophageal spasm. Nutcracker esophagus is the most common single motility disorder in Korea. The esophageal manometric test is a useful technique to evaluate esophageal symptoms of unknown origin.
고혈압성 심장에서 4 심음과 좌심실 근질량 및 승모판 혈류양상의 관계
정양호(Yang Ho Jung),김경중(Kyeong Joong Kim),허종(Jong Heo),노인환(In Whan Ro),박양규(Yang Kyu Park),정진원(Jin Won Jeong),박옥규(Ock Kyu Park) 대한내과학회 1989 대한내과학회지 Vol.37 No.6
N/A To determine the clinical significance of the fourth heart sound (S.) in hypertensive heart, 31 patients with essential hypertension aged between 32 to 77 years old and 15 normal controls were examined by physical examination, phonocardiography and echocardiography, All hypertensive patients had normal sinus rhythm and no history of coronary artery disease nor COPD and most of them had moderate to severe hypertension. Depending upon the presence of audible S4, hypertensive patients were divided into 3 groups; those without audible S, (group I, 15 cases), those with audible S, (group II, 12 cases) and those with questionably audible S, (group III, 4 cases). M-mode echocardiograms of the left ventricle and pulsed wave Doppler echocardiograms of the mitral valve were performed to determine the left ventricular thickness/dimension ratio (T/D), left ventricular mass index (LVMI) and A/E ratio of mitral flow pattern. T/D and LVMI were significantly increased in both hypertensive group I and group 11 (p<0.01) and T/D of hypertensive group II was more increased than that of hypertensive group I (p<0,05), but there was no significant difference between hypertensive group I and group II in LVMI. In contrast, the A/E ratio of mitral Doppler flow pattern was increased only in hypertensive group II compared to normal controls (p<0.01), and there was a significant difference between hypertensive group I and group II (p<0.01). Audible S, was found in hypertensive patients with an A/E ratio greater than 1.10 and in a normal person with an A/E ratio of 1.27, and all 10 hypertensive patients above an A/E ratio of 1.20 except one had an audible fourth heart sound. In conclusion, audible fourth heart sound is a useful bedside parameter for detecting left ventricular diastolic dysfunction in the hypertensive heart.
용액법으로 제작된 ZnSnO 박막트랜지스터의 전극 물질에 따른 계면 접촉특성 연구
정영민,송근규,우규희,전태환,정양호,문주호,Jeong, Young-Min,Song, Keun-Kyu,Woo, Kyoo-Hee,Jun, Tae-Hwan,Jung, Yang-Ho,Moon, Joo-Ho 한국재료학회 2010 한국재료학회지 Vol.20 No.8
We studied the influence of different types of metal electrodes on the performance of solution-processed zinc tin oxide (ZTO) thin-film transistors. The ZTO thin-film was obtained by spin-coating the sol-gel solution made from zinc acetate and tin acetate dissolved in 2-methoxyethanol. Various metals, Al, Au, Ag and Cu, were used to make contacts with the solution-deposited ZTO layers by selective deposition through a metal shadow mask. Contact resistance between the metal electrode and the semiconductor was obtained by a transmission line method (TLM). The device based on an Al electrode exhibited superior performance as compared to those based on other metals. Kelvin probe force microscopy (KPFM) allowed us to measure the work function of the oxide semiconductor to understand the variation of the device performance as a function of the types metal electrode. The solution-processed ZTO contained nanopores that resulted from the burnout of the organic species during the annealing. This different surface structure associated with the solution-processed ZTO gave a rise to a different work function value as compared to the vacuum-deposited counterpart. More oxygen could be adsorbed on the nanoporous solution-processed ZTO with large accessible surface areas, which increased its work function. This observation explained why the solution-processed ZTO makes an ohmic contact with the Al electrode.
정양호,조정구 圓光大學校 醫科學硏究所 1987 圓光醫科學 Vol.3 No.2
Central diabetes insipidus results from a lack of sufficient ADH to effect water conservation. The disease is identified by persistence of an inappropriately dilute urine in the presence of strong osmotic or nonosmotic stimuli to ADH secretion, absence of renal concentrating defects, and a rise in urine osmolality upon administration of vasopressin. We experienced a case of 29-year old male with persistent polyuria, thirst, and polydipsia due to central diabetes insipidus. The maximal urine osmolality with dehyrdation was 381 mosm/㎏ and urine osmolality was increased by only 26% after vasopressin injection. The serum osmolality at the time of vasopressin injection was 296 mosm/㎏. So we present this case with a review of literatures.
김학철,정양호,안태규 대한내과학회 1989 대한내과학회지 Vol.37 No.1
Aneurysms of the hepatic artery are uncommon lesions in comparison to those in other major vessels. Their clinical symptomatology varies from symptomless to shock due to rupture and most are noticed in the fatal course of rupture. So early diagnosis and prompt treatment are very difficult and important. A 48-year-old male was admitted due to hematemesis and steady abdominal pain. By duodenoscopy, hemobilia was suggested from the blood clot on the orifice of the ampulla of Vater and the celiac angiography was performed, which revealed a hepatic artery aneurysm. We performed selective hepatic artery embolization, thereafter the patients symptoms were relieved.