BACKGROUND: The action of the volatile anesthetics on various organs in the body is not well known. Since Furchgott (1980) discovered endothelium derived relaxing factor (EDRF) from endothelium, many studies have been tried. Many investigators were studied about the relationship between the EDRF and the effect of the volatile anesthetics on blood vessels too. But the effect of volatile anesthetics and the site of action on the blood vessel were still controversial. In this study, we evaluated that the effect and the action site of halothane and isoflurane on isolated aortic rings of the rabbit. METHODS: Each of obtained thoracic aorta from rabbits (1.5~2.5 Kg) was divided into 3~5 mm sized rings, and a half of that were denuded. All of the aortic rings were preconstricted with phenylephrine 1.5 10-7 Mole in warm organ bath filled with modified Krebs' solution, and then LNAME (inhibitor of nitric oxide synthase, 3 10-4Mole) was administered to one group of aortic rings. MB (inhibitor of soluble guanylate cyclase, 2 10-5Mole) was administered to another one group and neither of LNAME nor MB was administered to the other group. And then isoflurane or halothane was administered (1~4%) to all of aortic rings. The polygraph recorded the changes of tension of aortic ring which was transmitted through the force transducer. RESULTS: It was proved that basal EDRF was released from endothelium by the fact that intact aortic rings were more constricted after LNAME or MB administration. The intact aortic rings were constricted in all concentration of isoflurane and both intact and denuded rings were relaxed in 4% concentration of halothane. CONCLUSION: It is concluded that isoflurane in all concentrations has an endothelium -mediated vasoconstriction and 4% halothane produced vascular relaxation directly independent of existence of the endothelium of vessel.
Anesthetics ; Aorta, Thoracic ; Arginine* ; Baths ; Blood Vessels ; Endothelium ; Endothelium-Dependent Relaxing Factors ; Guanylate Cyclase ; Halothane* ; Humans ; Isoflurane* ; Methylene Blue ; Nitric Oxide Synthase ; Phenylephrine ; Rabbits ; Relaxation ; Research Personnel ; Transducers ; Vasoconstriction

Plasma renin activity (PRA) and aldosterone were measured to evaluate various status of clinical conditions in normal controls and patients with essential hypertension. Fourteen controls and 45 essential hypertensive patients for PRA, and 10 controls and 28 patients with essential hypertension for plasma aldosterone were studied. The results obtained are summarizing as follows. 1. Mean value of PRA of normal subjects was 2.9+/-1.4ng/ml/hr at rest, and 5.9+/-2.3ng/ml/hr by double stimulation, respectively, the latter elevated up to twice the former. 2. Mean value of PRA in the patients with essential hypertension was 3.37+/-3.0ng/ml/hr at rest, and 5.99+/-4.9ng/ml/hr by double stimulation. The latter have increased to 1.8 times the former. 3. The patients with low PRA observed in 33.3%, the normal in 42.2%, and the high in 22.5%, at rest. After double stimulation, the low group was observed in 22.2%, the normal in 60.0%, and the high in 17.8%. 4. Mean age of the patietns with low PRA was 57.2+/-2.6 years. Though it was higher than those of normal and high PRA groups(52.0+/-10.1 years), statistical significances were observed (0.05 Aldosterone* ; Blood Pressure ; Cholesterol ; Electrocardiography ; Furosemide ; Humans ; Hypertension* ; Hypertrophy, Left Ventricular ; Motor Activity ; Plasma* ; Potassium ; Proteinuria ; Renin* ; Sodium ; Triglycerides

BACKGROUND: A low level of high-density lipoprotein-cholesterol (HDL-C) is well known as an important cardiovascular risk factor which is closely associated with physical activity levels. However, there is a very few studies conducted on relationship between physical activity and HDL-C status among Korean adults. METHODS: We selected total 22,294 people aged 19 to 69 years old who had not taken lipid lowering agents from the 2005 Korea National Health and Nutrition Examination Survey (NHANES) data. The population was classified into three groups using the criteria for HDL-C of Adult Treatment Panel III. The relationship between the physical activity and HDL-C was investigated and the amount of physical activity levels of the three HDL-C groups were obtained with analysis of covariance with adjustments for various factors influencing the physical activity levels. RESULTS: After adjusted for various factors influencing HDL-C, physical activity is significantly associated with HDL-C. As physical activity is increased, HDL-C is much higher (P<0.001).The physical activity levels were significantly different among the three HDL-C groups. The amount of physical activity in low HDL-C group was significantly low compared to high HDL-C group (1653.08+/-65.31 MET-min/wk vs. 1916.70+/-102.86 MET-min/wk, P<0.001). CONCLUSIONS: We confirmed that the amount of physical activity level in low HDL-C group was significantly lower compared with that of high HDL-C group in Korean adults.
Adult ; Aged ; Cardiovascular Diseases ; Cholesterol ; Cholesterol, HDL ; Humans ; Korea ; Lipoproteins ; Motor Activity ; Nutrition Surveys ; Risk Factors

No abstract available.
Granuloma* ; Subphrenic Abscess*

No abstract available.
Hemorrhage*

No abstract available.
Facial Bones*

No abstract available.
Animals ; Hindlimb Suspension* ; Hindlimb*

BACKGROUND: Desflurane is a new inhaled anesthetic with the lowest blood/gas partition coefficient and enflurane is one of the major anesthetics in these days. But the effect of volatile anesthetics and the site of action on the blood vessel are still controversial. Since Furchgott (1980) discovered endothelium derived relaxing factor (EDRF) from endothelium, many investigators have studied about the relationship between the EDRF and the effect of the volatile anesthetics on blood vessels. In this study, we evaluated that the effect and the action site of enflurane and desflurane on isolated aortic rings of the rabbit. METHODS: Each of obtained thoracic aorta from rabbits (1.5~2.5 kg) was divided into 4~6 mm rings, and a half of that were denuded. All of the aortic rings were preconstricted with phenylephrine 1.5 10-7 Mole in warm organ bath filled with modified Krebs' solution, and then LNAME (inhibitor of nitric oxide synthase, 3 10-4Mole) was administered to one group of aortic rings. MB (inhibitor of soluble guanylyl cyclase, 2 10-5Mole) was administered to another one group and neither of LNAME nor MB was administered to the other group. And then enflurane (1%, 2%, 3%, 4%) or desflurane (6%, 9%, 12%) was administered to all of aortic rings. The polygraph recorded the changes of tension of aortic ring which was transmitted through the force transducer. RESULTS: It was proved that basal EDRF was released from endothelium by the fact that intact aortic rings were more constricted after LNAME or MB administration. The intact aortic rings were constricted in all concentration of enflurane and both intact and denuded rings were maintained from control tension in all concentrations of desflurane. CONCLUSION: It is concluded that enflurane in all concentrations has an endothelium-mediated vasoconstriction effect and desflurane in all concentrations has no effect on isolated aortic rings of rabbit.
Anesthetics ; Aorta, Thoracic ; Arginine* ; Baths ; Blood Vessels ; Endothelium ; Endothelium-Dependent Relaxing Factors ; Enflurane* ; Guanylate Cyclase ; Humans ; Nitric Oxide Synthase ; Phenylephrine ; Rabbits ; Research Personnel ; Transducers ; Vasoconstriction

A 53-year-old woman presented with dyspnea. She had undergone extended thymectomy for an invasive thymoma two months prior. CT revealed numerous small nodules in the lung. After that, she deteriorated owing to acute respiratory distress syndrome (ARDS), and the vascular surgeon planned veno-venous extracorporeal membrane oxygenation (ECMO). During percutaneous cannulation through the left femoral vein, a vascular injury was suspected, and the patient’s vital signs became unstable. Diagnostic angiography showed a ruptured left common iliac vein, and the bleeding was stopped by placement of a stent-graft. May-Thurner syndrome was diagnosed on abdominal CT. Here, we report a rare case of ECMO-related vascular injury in a patient with an unrecognized anatomical variant, May-Thurner syndrome.