Right axillary vein thrombosis due to malpositioning of a central venous catheter via the internal jugular vein / 대한마취과학회지

No abstract available.

Difficult tracheostomy tube placement in an obese patient with a short neck: A case report / 대한마취과학회지

We report a difficult case of tracheostomy in a 34-year-old obese woman with a short neck. The tracheostomy tube placement repeatedly failed because of anatomical changes due to obesity and a short neck, tracheal mucosal swelling due to prolonged intubation, and unexpected false passage; however, it was successfully performed using an endotracheal tube exchanger as a guidewire.

Cooperation with anesthesiologists for acute airway management in the emergency department: A case report

Airway management in the emergency department is one of the most important responsibilities of the emergency physician and often involves cooperation with anesthesiologists and trauma surgeons. A 21-year-old woman was transferred to our emergency department for urgent trauma management following a motor vehicle accident. Her face was severely edematous, and her lower maxilla, including the alveoli, was separated from the upper maxilla. She was diagnosed with a Le Fort I fracture with a basal skull fracture. She also had epistaxis and oral bleeding. Her airway was difficult to manage; however, our trauma team, including anesthesiologists, managed her airway successfully in the emergency room.

Intraocular Pressure Changes After Experimental Retinal Photocoaglation

Retinal photocoagulation using MDS 90 Dye laser system was applied to the retina of normal pigmented rabbits(200 microgram in spot size, 0.2sec in exposure time, 200-300mW in power, 514nm in wavelength, and one spot size distance) with different number of spots and the changes of intraocular pressure(IOP) were compared with each other. The IOP was checked at pre-photocoagulation, immediately after, and 1, 2, 3, 4 hours after photocoagulation. The following results were obtained: 1. The IOP immediately after photocoagulation was lower than the pre-photocoagulation IOP. 2. The IOP 1, 2 hours after photocoagulation was higher than the pre-photocoagulation IOP. 3. The IOP 2 hours after photocoagulation was the highest. 4. The IOP 1, 2 hours after photocoagulation was higher when the laser spot number was 2000 than 1000, 500, and there was no difference of IOP between 1000 and 500 laser spot numbers. 5. The IOP returned to the pre-photocoagulation level 3 or 4 hours after photocoagulation.

Intraocular Pressure Changes After Gas Tamponade

100% sulfur hexafluoride(SF6) was injected into the vitreous cavity of nonvitrectomized retinal detachment patients. A total of 0.5ml of gas was injected with a single shot in 3 eyes or two 0.25ml in 3 eyes without lowering of intraocular pressure. And in 3 eyes, single shot of 0.5ml of gas was used after lowering of intraocular pressure. The changes of intraocular pressure were monitored at 5 minute intervals for 60 minutes and at one hour intervals for 8 hours after injection. Marked elevation of intraocular pressure was noted in both single shot group, but the elevation of intraocular pressure of double shot group was much smaller. But in all groups, the intraocular pressures were returned to under 30mmHg within 20 minutes and no re-elevation of intraocular pressure was noted in all cases after initial return to normal. In a case with two 0.3ml shots, the highest pressure was 49mmHg and with 0.35ml shots, the highest pressure was 78mmHg. So the effect of SF6 on intraocular pressure seemed to be negligible so long as the injection volume was limited to 0.5ml or less in single shot; and 0.6ml in double shots.

Intraocular Pressure Changes After Gas Injection into the Rabbit Vitreous Cavity

A total of 0.3ml of 100% sulfur hexafluoride(SF6) was injected into vitreous cavity with a single shot or two 0.15ml shots, and the time dependent intraocular pressure changes were compared. Intraocular pressure was monitored at 5 minute intervals for 60 minutes after injection. Immediately after a single shot injection, remarkable intraocular pressure elevation(85mmHg, mean)was observed, which returned, however, to normal level within 15 minutes. Intraocular pressure elevation was milder when a smaller bolus of gas(0.15ml)was separately injected twice. No re-elevation of intraocular pressure was noted with either method after the initial return to normal.

Effect of Method of Illumination on the Visual Contrast Sensitivity Funetion

To find out the good visual environment for reading, the methods of illumination were studied using Arden Contrast Sensitivity System. Among various factors for comfortable reading condition such as air condition, temperature, humidity, noise and light, the intensity and characters of illumination were the most important factors for eye health. If the character of illuminations are fairly good, to make the brighter condition is better for eye hdalth. But in artificial illumination, there are so many limitations for supplying light of good characters. So we set the luminosity on the desk to 500 lx in which tbe best visual acuity presented, and checked the contrast sensitivity by changing the luminosity of the room. The results suggested that the condition in which luminosity on the desk was higher twice than the room was favorable for reading.