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Transient Left Ventricular Systolic Dysfunction Associated with Carbon Monoxide Toxicity
장원일,박재형 한국심초음파학회 2010 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.18 No.1
Carbon monoxide (CO) is one of well known chemical asphyxiants which cause tissue hypoxia with prominent neurologic and cardiovascular injury. Cardiac dysfunction after CO poisoning can be presented as two clinical patterns. One is transient global left ventricular (LV) dysfunction and the other is LV dysfunction with regional wall motion abnormalities. In this case report, we present a case with transient LV systolic dysfunction caused by intentional exposure to CO. After conservative treatment including high concentration of oxygen, the patient recovered completely without any complication.
Management of Regional Lymph Nodes in Localized Vulvar Carcinoma
장원일,우홍균,박찬일,하성환,이효표,강순범,송용상 대한방사선종양학회 2008 Radiation Oncology Journal Vol.26 No.1
Purpose: To evaluate the impact of postoperative radiotherapy on loco-regional failure in patients with vulvar carcinoma and to determine the treatment strategy for inguinal lymph nodes. Materials and Methods: Sixty-six patients who received treatment for primary vulvar carcinoma at Seoul National University Hospital, from October 1979 through June 2004, were retrospectively analyzed. Sixteen patients were excluded from the analysis due to the following reasons: distant metastases in two patients; palliative intent for six patients; previous radiotherapy given to the pelvis in three patients; follow-up loss after surgery for four patient; insufficient medical records for one patient. Of 50 eligible patients, 35 were treated with surgery alone (S), ten were treated with surgery followed by radiotherapy (S+RT), and five were treated with radiotherapy alone. Results: The 5-year overall survival (OS) and disease-free survival (DFS) rates of all patients were 91% and 78%, respectively. Twelve patients (26%) experienced treatment failures and the sites of initial failure were as follows: a primary site in eight patients; regional lymph nodes in three patients; the lung in one patient. Although risk factors for failure were more common in the S+RT group than the S group of patients (p <0.05), the DFS rates were similar for the two groups (5-year DFS rates, 78% vs. 83%, p=0.66). The incidences of occult lymph node metastases was 10%. Ten of 31 patients with clinically negative lymph nodes did not received inguinal lymph node dissection, but no patient experienced regional failure. Conclusion: Postoperative radiotherapy may have a potential benefit for patients with risk factors for failure. The omission of inguinal dissection or elective radiotherapy to the inguinal lymph nodes may be considered in low-risk patients with clinically negative lymph nodes.
Atomic Absorption Spectrophotometry에 의한 암석광물중의 미량 Ag정량
장원일 단국대학교 공과대학 E.C.C. 1971 단핵 Vol.3 No.-
Atomic absorption Spectrophotometry는 1955년 A. Walsh에 의하여 제창되어 지금은 많은 발전과 세계 각구에서 널리 사용되고 있으며 많은 원소들 중에서 특히 alkali 금속 및 Mg, Ag, Ni등에는 감고가 좋은 분석법이 되고 있다. 또 이 原子吸光分析機는 65종의 금속 내지 반금속 원소들을 정량할 수 있는데 동일 시료중에 함유되고 있는 많은 다른 원소들의 방해를 받지 않고 신속 정확하게 정량할 수 있으며 많은 분야에서 응용되고 있다. 아래에 응용분야 및 각 원소의 Sensitivity을 명기하여 앞으로 atomic absorption Spectrophtometer을 이용하는데 도움이 되었으면 한다.