No abstract available.

PURPOSE: To establish the incidence of deep vein thrombosis among Koreans after primary total hip arthroplasty and the usefulness of color doppler ultrasonography for routine noninvasive screening for deep vein thrombosis. MATERIALS AND METHODS: We performed prospective, randomized routine venography and color doppler ultrasonography before and after operation in a consecutive series of 89 primary total hip arthroplasty in which no form of prophylaxis was used. RESULTS: Of the 89 cases, eleven (12.4%) were found to have deep vein thrombosis (three proximal veins and eight distal veins) by bilateral venography. Most of the thromboses except two were asymptomatic. No patient had a symptomatic pulmonary embolism. Statistical analysis of risk factors, age, gender, weight, height, fixation method, and duration of operation time, were performed and there was no statistical difference (P>0.05). The reliability of color doppler ultrasonography for detection of deep vein thrombosis was demonstrated. CONCLUSIONS: We found insufficient evidence to recommend routine thromboprophylaxis in primary total hip arthroplasty among Koreans. The authors recommend that routine bilateral color doppler ultrasonography screening be considered after primary total hip arthroplasty for detection of deep vein thrombosis
Arthroplasty, Replacement, Hip* ; Humans ; Incidence ; Mass Screening ; Phlebography ; Prevalence* ; Prospective Studies ; Pulmonary Embolism ; Risk Factors ; Thrombosis ; Ultrasonography, Doppler, Color ; Veins ; Venous Thrombosis*

To investigate the retinal hemodynamics in chronic primary open angle glaucoma (POAG), high-quality video fluorescein angiograms using a scanning laser ophthalmoscope(SL0 101, Rodenstock, Munich, Germany) were obtained from 22 eyes of 16 patients with POAG and 14 eyes of 14 healthy subjects. From these angiograms, the arm to retinal time (ART), arteriovenous passage time (AvFT), venous fulling time(VFT) and arteriovenous fulling time (AvFT) were quantified. And these parameters of retinal circulation of the group of patients with POAG were compared with those of the age-matched group of healthy subjects. There were no significant differences in the ART between two groups (p=0.09). But significant prolongations of the AvPT, VFT and AvFT of the group of patients with POAG(2.5 +/- 1.1, 8.4 +/- 1.8 and 10.9 +/- 2. sec, respectively) were observed compared to the values (1.8 +/- 0.7, 6.4 +/- 2.2 and 8.1 +/- 2. 4 sec, respectively) obtained among the healthy subjects (p=0.04, p=0.007 and p=0.0008, respectively). These results indicate that a significant retinal microcirculatory deficit exists in the eyes of POAG, and the VFT and AvFT may be good indices of retinal microcirculatory deficit in the eyes of POAG.
Arm ; Fluorescein ; Glaucoma, Open-Angle* ; Hemodynamics ; Humans ; Retinaldehyde

No abstract available.

BACKGROUND: Automated external defibrillator(AED) represent a major breakdown to permit more widespread application of the principle of early defibrillation. Many recent efforts to improve emergency medical services(EMS) and increase survival rates are simply efforts to get defibrillation to patients as rapidly as possible. AED is major innovation for the prehospital care of ventricular fibrillation cardiac arrest patients. The purpose of this study is to evaluate the course of initial training to three different groups(nurses, firefighters, and EMT trainee) to use AED. METHOD: We studies the efficacy of education of AED to 33 nurses, 15 EMT trainee, and 16 firefighters. Training lasted 75 mins and included 45 mins an overview of defibrillation, protocols for using the AED, and operation of the AED(Laerdal Heartstart 3000),15 mins demonstraion.4 check list was used to grade the performance of cardiopulmonary resuscitation, operation of the AED, and the time required to deliver the first three defibrillations. RESULT: There were no statistically significant differences in performance and time required to deliver an electrical countershock among the groups(p=0.4). To the second test 92fo of all group completed all steps successfully. The step most often foiled was the preparing of the AED for defibrillation. CONCLUSION: In nurses, EMT trainee, and firefighters, it is both feasible and effective to train AED use irrespective of the degree of the trainee.
Cardiopulmonary Resuscitation ; Defibrillators* ; Education ; Emergencies* ; Firefighters* ; Heart Arrest ; Humans ; Survival Rate ; Ventricular Fibrillation

OBJECTIVE: To find most effective pressure relief method in wheelchair seated spinal cord injured patients and to evaluate effectiveness of trunk lateral bending, trunk pulling and trunk forward flexion methods in practical environment METHOD: Twenty spinal cord injury patients were included in this study. After 5 cm air-filled cushion (ROHO(R)) was placed on wheelchair seat, patients were seated on wheelchair with neurtal position and interface pressure of buttock was measured by X-sensor 4.0 system. Patients took a posture lateral bending, trunk pulling, forward flexion methods. Mean and maximal pressure of buttock were measured at each pressure relief methods. RESULTS: Mean and maximal pressure of buttock were reduced by 90degrees trunk forward flexion (p<0.05). In trunk lateral bending method, pressure was reduced in non-weight bearing side of buttock, but pressure was highly elevated in weight bearing side. In trunk pulling method, pressure was elevated in both weigth bearing and non-weight bearing side. CONCLUSION: 90degrees trunk forward flexion method can be recommended to wheelchiar seated spinal cord injured patients for pressure relief of buttock.
Buttocks ; Humans ; Posture ; Spinal Cord Injuries ; Spinal Cord* ; Weight-Bearing ; Wheelchairs*

PURPOSE: To determine the upper limit of peripheral nerve lengthening without loss of function, the recovery time of peripheral nerve palsy due to nerve lengthening and their histological changes. MATERIALS AND METHODS: Twelve adult New Zealand rabbits weighing about 2.5 kg were assigned to the following groups. Group 1 (n=6) was subjected to slow tissue expansion with 30% of nerve lengthening while group 2 (n=6) was rapid expansion with 40% lengthening of nerve. The expanders were refilled every 2 times during the 2nd and 4th weeks making a total four times of expansion. The rabbits were assessed in terms of affected leg paralysis, neural length gain, EMG with nerve conduction velocity and histological changes. RESULTS: In group 1 (n=6), paralysis on affected leg was found in one rabbit and was recovered spontaneously on the 4th weeks after expander removal. In Group 2 (n=6), paralysis was found in four rabbits, and three of them were recovered on 4, 5 and 9 weeks after removal of the expander. EMG study showed increase in distal latency of 2.50+/- 0.20 m/sec, and decrease in nerve conduction velocity of 62.49+/- 5.30 m/sec compared to normal side with 1.89+/- 0.14 m/sec and 75.39+/- 7.82 m/sec. The mean neural length gain was 6 mm (30% of 20 mm of initial pre-experimental nerve length) in group 1 and 8 mm (40% of 20 mm) in group 2. Light microscopic examination revealed the loss of segmental myelination, decrease of myelination, and vacuolation. Electron microscopic examination showed that the normal ring shaped contour of axon was changed to convoluted shape.
Adult ; Axons ; Humans ; Leg ; Myelin Sheath ; Nerve Expansion ; Neural Conduction ; Paralysis ; Peripheral Nerves ; Rabbits ; Sciatic Nerve* ; Tissue Expansion*

Hematoma is quite a common complication of femoral arterial catheterization. However, to the best of our knowledge, there have been no previous studies regarding deep vein thrombosis (DVT) caused by compression of a vein due to a hematoma. We report a case of a hematoma developing after femoral arterial catheterization and causing extensive symptomatic DVT. A 59-year-old male was seen in our Emergency Department with right lower leg swelling 15 days after coronary stent implantation performed using right femoral artery access. Computed tomographic (CT) scanning revealed a large hematoma (45 mm in its longest diameter) compressing the common femoral vein and with DVT from the right external iliac vein to the popliteal vein. Due to the extensive DVT involvement, we decided to release the compressed common femoral vein by surgical evacuation of the large hematoma. However, even following evacuation of the hematoma, as the DVT did not resolve soon, further mechanical thrombectomy and catheter-directed thrombolysis were performed. Angiography then showed nearly resolved DVT, and the leg swelling was improved. The patient was discharged with the anticoagulation medication, warfarin.
Angiography ; Angioplasty ; Catheterization ; Catheters ; Emergencies ; Femoral Artery ; Femoral Vein ; Hematoma ; Humans ; Iliac Vein ; Leg ; Male ; Popliteal Vein ; Stents ; Thrombectomy ; Thrombolytic Therapy ; Veins ; Venous Thrombosis ; Warfarin

Metastatic pulmonary calcification refers to calcium deposition in the normal pulmonary parenchyma and this deposition is secondary to abnormal calcium metabolism. The most common radiologic manifestation consists of poorly-defined nodular opacities that are mainly seen in the upper lung zone. We present here a case of metastatic pulmonary calcification that manifested as atypical, dense, calcium deposition in airspaces within the previously existing consolidation in the bilateral lower lobes, and this process was accelerated by pneumonia-complicated sepsis in a patient with hypercalcemia that was due to hyperparathyroidism.
Calcinosis/*radiography ; Female ; Humans ; Hypercalcemia/etiology ; Hyperparathyroidism/complications/surgery ; Lung Diseases/*radiography ; Middle Aged ; Parathyroidectomy ; Pneumonia/complications ; Shock, Septic/microbiology ; Tomography, X-Ray Computed/methods

OBJECTIVE: To evaluate the influence of high-pitch mode (HPM) in dual-source computed tomography (DSCT) on the accuracy of three-dimensional (3D) volumetry for solid pulmonary nodules. MATERIALS AND METHODS: A lung phantom implanted with 45 solid pulmonary nodules (n = 15 for each of 4-mm, 6-mm, and 8-mm in diameter) was scanned twice, first in conventional pitch mode (CPM) and then in HPM using DSCT. The relative percentage volume errors (RPEs) of 3D volumetry were compared between the HPM and CPM. In addition, the intermode volume variability (IVV) of 3D volumetry was calculated. RESULTS: In the measurement of the 6-mm and 8-mm nodules, there was no significant difference in RPE (p > 0.05, respectively) between the CPM and HPM (IVVs of 1.2 +/- 0.9%, and 1.7 +/- 1.5%, respectively). In the measurement of the 4-mm nodules, the mean RPE in the HPM (35.1 +/- 7.4%) was significantly greater (p < 0.01) than that in the CPM (18.4 +/- 5.3%), with an IVV of 13.1 +/- 6.6%. However, the IVVs were in an acceptable range (< 25%), regardless of nodule size. CONCLUSION: The accuracy of 3D volumetry with HPM for solid pulmonary nodule is comparable to that with CPM. However, the use of HPM may adversely affect the accuracy of 3D volumetry for smaller (< 5 mm in diameter) nodule.
Humans ; Imaging, Three-Dimensional/instrumentation/*methods ; Lung/radiography ; Lung Neoplasms/*radiography ; Multiple Pulmonary Nodules/*radiography ; Phantoms, Imaging ; Solitary Pulmonary Nodule/*radiography ; Tomography, X-Ray Computed/instrumentation/*methods