No abstract available.
Hypothermia*

No abstract available.
Coronary Artery Bypass*

No abstract available.
Coronary Artery Bypass*

No abstract available.

No abstract available.
Aorta, Thoracic* ; Aortopulmonary Septal Defect* ; Pulmonary Artery*

Primary intimal sarcoma of the pulmonary artery is a rare disease and there has been no report of any case originating from the pulmonary valve. Recently we experienced a 62 year-old female patient who had a primary intimal sarcoma of the pulmonary valve with distal metastasis. She was brought to medical attention due to exertional dyspnea facial edema productive coughing and general weakness for 1 month. Chest CT and echocardi-ography suggest an acute pulmonary thromboembolism or tumor. Exploration showed a large polypoid mass arising from the pulmonary leaflets and multiple masses on distal pulmonary arteries. We replaced the pulmonary valve and reconstructed the pulmonary artery. She received radiotherapy 1 month postoperatively and now 4 months after surgery she has begun receiving chemotherapy.
Cough ; Drug Therapy ; Dyspnea ; Edema ; Female ; Humans ; Middle Aged ; Neoplasm Metastasis ; Pulmonary Artery ; Pulmonary Embolism ; Pulmonary Valve* ; Radiotherapy ; Rare Diseases ; Sarcoma* ; Tomography, X-Ray Computed

PURPOSE: The purpose of this study was to determine the role of CT and MR imagings in the diagnosis aortic dissection and differentiation between the true and false lumen. MATERIALS AND METHODS: We retrospectively studied forty patients with aortic dissection(AD) diagnosed imagings or surgery. Of the forty patients, 19 were examined with only CT, 14 with CT and MR, and 7 with MI~: Our points of view were(1) the classification of AD according to configuration of intimal flap by cross-sectional imaging, (2) differentiation between the true and false lumens, (3) the course of the false lumen, and (4)! detectability of the origin of major branch vessels of the abdominal aorta. RESULTS: The classification by corss-sectional imaging were crescentic(65%), circumferential(15%), flat(12%), and irregular(8%) type, in which false negative diagnosis was made in 1 case of crescentic and circumferential type, respectively. In 2 case of flat type and 1 case of irregular type, the differentiation between the true and false lumen was impossible with CT. The course of the false lumen in descending thoracic aorta revealed countrclock wise rotation(66%), clockwise rotation(5%) or fixed(29%) apperance. MR imaging was superior to CT in the detection of the origin of major branch vessels of the abdominal aorta. The determination of the origin of major branches of abdominal aorta arising from the true and false lumen were impossible in 2 cases in which only CT was done. CONCLUSION: Diagnosis of crescentic and circumferential types of AD with narrow and thrombosed false lumen was problematic in both CT and MR with no difference of diagnostic accuracy between the two modalities. The differentiation between the true and false lumen was difficult in flat and irregular types with only CT. Therefore, when surgical treatment is considered as in type B aortic dissection, MR imaging is recommended in order to determine the origin of major branch vessels.
Aorta, Abdominal ; Aorta, Thoracic ; Classification ; Diagnosis* ; Humans ; Magnetic Resonance Imaging ; Retrospective Studies

Vanadate is a trace element in animal tissues and has been known to inhibit NA(+)-K(+) ATPase in various tissues including skeletal and cardiac muscles and smooth muscles. Vanadate shows contractile actions on various types of smooth muscles. Prolonged dietary administration of vanadate has been shown to cause arterial hypertension, increased peripheral resistance, and a marked reduction of coronary, visceral and renal blood flow.In isolated vascular smooth muscle of aorta, application of vanadate caused contraction. These studies have been conducted the preparation of vascular smooth muscles from which endothelial cell were removed. It has been reported that endothelial cell releases relaxing factor(s) (endothelium-derived relaxing factor, EDRF) in response to acetylcholine and a number of other stimuli and also produces vasoconstrictor substances (endothelium-derived contracting factor, EDCF). The aim of this present experiment is to elucidate whether vascular response of isolated rabbit aorta induced by vanadate are endothelium dependent or not. The result obtained were summarized as follows ; 1) When endothelium was intact, vanadate induced vascular relaxation of aorta precontracted with norepinephrine. But K+ induced contraction was augmented by vanadate in the aorta with or without endothelium. Whereas relaxation produced by vanadate precontracted with angiotensin II was endothelium-independent. 2) Hemoglobin, methylene blue, hydroquinone, and verapamil inhibited vanadate-induced vascular relaxation. But indomethacin and quinacrine had no effect on vanadate induced vascular relaxation. From the above results, it is speculated the vanadate act on endothelium, modifies the synthesis or release of endothelium-dependent relaxing factor and thus changes the contractile responses to norepinephrine in rabbit aorta.
Acetylcholine ; Adenosine Triphosphatases ; Angiotensin II ; Animals ; Aorta ; Endothelial Cells ; Endothelium ; Endothelium-Dependent Relaxing Factors ; Hypertension ; Indomethacin ; Methylene Blue ; Muscle, Smooth ; Muscle, Smooth, Vascular* ; Myocardium ; Norepinephrine ; Quinacrine ; Relaxation ; Vanadates* ; Vascular Resistance ; Verapamil

No abstract available.
Animals ; Clomipramine* ; Preoptic Area* ; Rats* ; Serotonin Uptake Inhibitors* ; Serotonin*

We analysed clinically 354 glaucomatous patients from 1983 to 1987 who visited the clinic of the Department of Ophthalmology of National Medical Center. The results were as follows: 1) The prevalence of glaucoma was 1.56% among the out-patients. 2) The primary open-angle glaucoma(POAG) was the most frequent type. 3) The mean age of the patients with POAG was 47.8 +/- 14.2 years and 60.8 +/- 8.9 years was that of the patients with primary angle-closure glaucoma(PACG). 4) There was no sexual preference in various types of glacoma, except PACG and secondary glaucoma. 5) There was no significant difference in laterality between right and left eyes.
Glaucoma ; Humans ; Ophthalmology ; Outpatients ; Prevalence