Etomidate and midazolam are newly developed and used in clinical trials. Etmoidate, a carboxylated imidazole derivative, decreases systemic vascular resistance and increases the pulmonary artery pressure in vivo. Midazolam, a water soluble derivative of benzodiazepine, decreases pulmonary artery pressure and is useful for pulmonary hypertensive patients. This study was designed to investigate the direet effects of etomidate and midazolam on vascular tension of the rabbit abdominal aorta and the pulmonary artery in vitro. In the vascular preparations with or without endothelium, changes in tension were measured following cumulative administration of etomidate (10(-6)M, 10(-5) M, 5X10(-4) M) and midazolam (10(-6)M, 10(-5)M, 10(-4)M). Vascular effects of these drugs were also studied in the preparations pretreated with indomethacin, nitro(w)-L-arginine methyl ester (L-NAME) and methylene blue. The results wer as follows; 1) Etomidate and midazolam induced vasorelaxation and the degree of relaxation depended on the concentration. 2) After denudation of the endothelium, vasorelaxant effect of etomidate and midazolam was efficiently decreased in abdominal aorta but not in pulmonary artery. 3) Indomethacin reduced vasorelaxing effect of etomidate efficiently, but didn't affect vasorelaxing effect of midazolam. 4) Following pretreatment of vascular preparations respectively with L-NAME and methylene blue, the relaxing responses to etomidate (10(-5) and 5X10(-5) M) of both abdominal aorta and pulmonary artery were depressed. Also, depressed was the relaxing response of abdominal aorta to midazolam (10(-5) M). The results of present study suggest that etomidate and midazolam possess vasorelaxing effects in both rabbit aMominal aorta and pulmonary artery. The vascular effect of etomidate is mediated via the nitric oxide pathway and also in part, by PGI2, whereas part of the vascular effect of midazolam is associated with the nitric oxide pathway.
Aorta ; Aorta, Abdominal* ; Benzodiazepines ; Endothelium ; Epoprostenol ; Etomidate* ; Humans ; Indomethacin ; Methylene Blue ; Midazolam* ; NG-Nitroarginine Methyl Ester ; Nitric Oxide ; Pulmonary Artery* ; Relaxation ; Vascular Resistance ; Vasodilation

Etomidate and midazolam are newly developed and used in clinical trials. Etmoidate, a carboxylated imidazole derivative, decreases systemic vascular resistance and increases the pulmonary artery pressure in vivo. Midazolam, a water soluble derivative of benzodiazepine, decreases pulmonary artery pressure and is useful for pulmonary hypertensive patients. This study was designed to investigate the direet effects of etomidate and midazolam on vascular tension of the rabbit abdominal aorta and the pulmonary artery in vitro. In the vascular preparations with or without endothelium, changes in tension were measured following cumulative administration of etomidate (10(-6)M, 10(-5) M, 5X10(-4) M) and midazolam (10(-6)M, 10(-5)M, 10(-4)M). Vascular effects of these drugs were also studied in the preparations pretreated with indomethacin, nitro(w)-L-arginine methyl ester (L-NAME) and methylene blue. The results wer as follows; 1) Etomidate and midazolam induced vasorelaxation and the degree of relaxation depended on the concentration. 2) After denudation of the endothelium, vasorelaxant effect of etomidate and midazolam was efficiently decreased in abdominal aorta but not in pulmonary artery. 3) Indomethacin reduced vasorelaxing effect of etomidate efficiently, but didn't affect vasorelaxing effect of midazolam. 4) Following pretreatment of vascular preparations respectively with L-NAME and methylene blue, the relaxing responses to etomidate (10(-5) and 5X10(-5) M) of both abdominal aorta and pulmonary artery were depressed. Also, depressed was the relaxing response of abdominal aorta to midazolam (10(-5) M). The results of present study suggest that etomidate and midazolam possess vasorelaxing effects in both rabbit aMominal aorta and pulmonary artery. The vascular effect of etomidate is mediated via the nitric oxide pathway and also in part, by PGI2, whereas part of the vascular effect of midazolam is associated with the nitric oxide pathway.
Aorta ; Aorta, Abdominal* ; Benzodiazepines ; Endothelium ; Epoprostenol ; Etomidate* ; Humans ; Indomethacin ; Methylene Blue ; Midazolam* ; NG-Nitroarginine Methyl Ester ; Nitric Oxide ; Pulmonary Artery* ; Relaxation ; Vascular Resistance ; Vasodilation

PURPOSE: Accidental out-of-hospital deliveries are generally associated with high rates of perinatal morbidity and mortality. To determine the status of accidental out-of-hospital deliveries transferred by emergency medical services (EMS), we analyzed the records of EMS runsheets in two South Korean provinces, Gyeonggi and Gangwon. METHODS: The EMS runsheets of patients who were more than 20 weeks pregnant and had delivery-related symptoms between January 2012 and December 2013 in Gyeonggi and Gangwon province were reviewed retrospectively. We analyzed the characteristics of accidental out-of-hospital deliveries by comparing these with those non out-of-hospital deliveries. RESULTS: There were 1,426 urgent dispatches during the study period. In 137 (9.6%) out-of-hospital deliveries, which took place prior to arriving at the hospital, and 48 of these were attended by EMS providers. The accidental out-of-hospital deliveries were more frequent during night time and more common among multiparous and younger age women; however, these observation was without any significance with respect to premature birth. The rate of the accidental out-of-hospital deliveries was not significantly different between rural and urban areas. Twenty cases of complication, including 10 arrests of neonates and EMS providers managed them by the following intervention: reduction of nuchal cord, umbilical cord clamping and cut, warming-up of and stimulating the neonates warms, using oropharyngeal suction, O₂ supplication, and neonatal cardiopulmonary resuscitation. CONCLUSION: As the rate of accidental out-of-hospital deliveries in patients who were transferred by EMS is higher than the rate of out-of-hospital deliveries in general, EMS providers should be fully trained. Moreover, there is the need for more completive records and continuous education.
Cardiopulmonary Resuscitation ; Constriction ; Education ; Emergencies* ; Emergency Medical Services* ; Female ; Gangwon-do ; Gyeonggi-do ; Humans ; Infant, Newborn ; Mortality ; Nuchal Cord ; Obstetric Labor Complications ; Pregnancy ; Premature Birth ; Retrospective Studies ; Suction ; Umbilical Cord

Intra-abdominal desmoplastic small round cell tumor (DSRCT) is a highly malignant tumor of uncertain histogenesis. Here we report a case of DSRCT involving the stomach, initially misdiagnosed as gastric cancer. A 12-year-old boy presented with upper abdominal pain developed 1 month prior. On gastroscopy, a 7-cm mass was noted involving the esophago-gastric junction to the fundus, and positron emission tomography showed multiple hot uptakes suggesting distant metastasis. Gastroscopic biopsy showed poorly differentiated malignant cells. We diagnosed as stage IV gastric cancer and treated with 6 cycles of chemotherapy. Laparotomy revealed a huge gastric mass along with peritoneal disseminations. Palliative proximal gastrectomy was performed. Pathological examination revealed transmural involvement of DSRCT, and t(11;22)(p12;q12) was demonstrated on fluorescence in situ hybridization test. The chemotherapeutic regimen was changed and the patient underwent 8 additional cycles of post-operative chemotherapy. The patient is now alive and the residual tumor shows no significant changes after chemotherapy.
Abdominal Pain ; Biopsy ; Child ; Desmoplastic Small Round Cell Tumor ; Fluorescence ; Gastrectomy ; Gastroscopy ; Humans ; In Situ Hybridization ; Laparotomy ; Neoplasm Metastasis ; Neoplasm, Residual ; Positron-Emission Tomography ; Stomach ; Stomach Neoplasms

No abstract available.
Gastroschisis*

Perioperative management of patients with pheochromocytoma is challenging. Accordingly, proper preoperative preparation is important. Prazosin, a selective alpha I blocker, may offer a potential advantage. This 54-year-old woman was treated with prazosin 2 mg, b.i.d. for 15 days and also with propranolol 20 mg, b.i.d. for a few days intermittently before the proposed surgery. Both symptoms and blood pressure were well controlled effectively. Induction of anesthesia was accomplished with nitrolingual spray, fentanyl 100 ug, 1% idocaine 50 mg, 2.5% thiopental sodium 200 mg, vecuronium 6 mg and 100% O2-enflurane. During the surgical and anesthetic procedure, the patient showed a reduced incidence of excessive blood-pressure variations and no arrhythmia was present except for supraventricular ectopic beats. Conclusively, we believe that careful preoperative preparation is recommended to minimize intraoperative hemodynamic dieturbances and their sequelae.
Anesthesia ; Arrhythmias, Cardiac ; Blood Pressure ; Female ; Fentanyl ; Hemodynamics ; Humans ; Incidence ; Middle Aged ; Pheochromocytoma* ; Prazosin* ; Propranolol ; Thiopental ; Vecuronium Bromide

No abstract available.
Pulmonary Embolism*

No abstract available.
Chondroma* ; Humans ; Young Adult*

BACKGROUND: Propofol(2,6 diisopropylphenol) is a potent hypnotic currently formulated as an oil-in-water emulsion. Although previous studies reported decreases in arterial pressures and heart rate, no detailed studies of hemodynamic effects of propofol administration alone are available in Korea. This study is to determine the hemodynamic changes induced by doses of propofol. METHODS: Sixty patients(ASA physical status 1 or 2) were divided randomly into three groups as follows: group I, pmpofol 1.5 mg/kg; group 2, propofol 2.0 mg/kg; group 3, propofol 2.5 mg/kg. Heart rate and mean arterial pressure were measured by Datascope 2200I, and cardiac index(CI) and systemic vascular resistance index(SVRI) were obtained by doppler cardiac output monitor(Datascope Accucom 2) at the suprasternal notch before and after induction of propofol. RESULTS: Statistically significant decreases in mean arterial pressure were observed since 2 min after induction. CI was decreased from 2.94+/-0.51 to 2.35+/-0.57 L/min/m(2) at 6 min after induction of propofol 2.5 mg/kg, and no differences among groups. CI was also decreased in group 1 and 2 but without any significance. SVRI was decreased in all groups but there were no significance, and no differences among groups. CONCLUSIONS: The data suggest that the usual doses of propofol do not significantly cause hemodynamic changes, and a decrease in mean arterial pressure is a result of decreased CI and reduced SVRI.
Anesthetics ; Arterial Pressure ; Cardiac Output ; Heart Rate ; Hemodynamics* ; Korea ; Propofol* ; Vascular Resistance

BACKGROUND: Nerve root sleeve injection has become popular in the treatment of lumbar radicular complaints. However reported data on nerve root sleeve injection is more of a technical nature. The present study was designed to evaluate the therapeutic success of a fluoroscope guided nerve root sleeve injection of local anesthetics and corticosteroids. METHODS: Fifty seven patients who had persistent radicular pain and/or low back pain that is resistant to conservative treatment were treated with fluoroscope guided injection therapy. 0.125% bupivacaine 2.5 ml and triamcinolone 40 mg were injected at intervals of 2 - 4 weeks. Before and after treatment and at follow up, a visual analogue scale (VAS) was measured. Treatment success was evaluated on a ratio based on the visual analogue scale (post-treatment VAS/pre-treatment VAS) and categorized as following (good improvement = > 70%, moderate improvement = 70 50%, no improvement = < 50%). RESULTS: Short-term good and moderate improvement was observed in 46% of the patients with radiating pain and/or lower back pain, and in 43% of patients with lower back pain only. CONCLUSIONS: Results indicated that nerve root sleeve injections of corticosteroids done under fluoroscopic guidance as an outpatient procedure was effective and safe in our study and may deserve to be used as part of the conservative management of lumbar radiculopathy before resorting to more invasive methods.
Adrenal Cortex Hormones ; Anesthetics, Local ; Bupivacaine ; Follow-Up Studies ; Health Resorts ; Humans ; Low Back Pain ; Outpatients ; Radiculopathy ; Spine* ; Triamcinolone