Factors Predicting Complications after Internal Fixation of Femoral Neck Fractures

PURPOSE: To evaluate the factors predicting complications after internal fixation using multiple cannulated screws in the patients with femoral neck fracture, the authors performed a comparative study of a success group and a failure group and reviewed the literature. MATERIALS AND METHODS: Sixty-eight patients with intracapsular femoral neck fractures were treated by multiple pinning from January 2000 to July 2007 and followed up more than one year. Relationships between the complications such as failure of union, collapse of femoral head due to osteonecrosis of femoral head and several affecting factors including the degree of displacement by Garden stage, state of reduction, position of screws, patient's age, time interval from injury to operation, anatomical fracture site and two weeks postoperative (99m)Tc-MDP bone scan were analyzed. RESULTS: Statistically significant factors were the degree of displacement by Garden stage (p<0.001), reduction state (p<0.001) and postoperative two weeks (99m)Tc-MDP bone scan (p<0.001). CONCLUSION: An accurate anatomical reduction is needed to decrease complications with multiple cannulated screws fixation of femoral neck fracture. Displacement of fracture by Garden stage and (99m)Tc-MDP bone scan are major factors predicting complications.

An Analysis of 3,000 Cases of Percutaneous Renal Biopsy: Single Center Study / 대한신장학회지

PURPOSE: The incidence of glomerular diseases varies according to population characteristics and time period. METHODS: A total of 3,000 renal biopsies were performed over the 29 years' period from 1978 to 2007. We reviewed the patient records of all patients who underwent renal biopsies at our institution. The patients were grouped for analysis in three time intervals: before 1990, 1991 to 2000, and after 2001. RESULTS: There were 2,377 cases of native kidney biopsies and 623 cases of allograft kidneys. The principal long-term changes were an increase in the mean age of patients with undergoing biopsy and an increase in the percentage of asymptomatic urinary abnormalities as an indication for biopsy. In the primary glomerulonephritis (GN), the most common pathologic diagnosis was IgA nephropathy (IgAN, 26.6%), followed by minimal change disease (MCD, 21.4%), membranous nephropathy (8.9%), focal segmental glomerulosclerosis (7.7%). The major changes noted in primary GN were a marked increase in the frequency of IgAN and decrease in the frequency of MCD. Major causes of secondary GN were lupus nephritis (37.9%), and hepatitis associated GN (28.9%). In allograft biopsies, acute rejection (42.3%) and chronic rejection (19.4%) were the two most common diagnoses. Documented complications of renal biopsies included perirenal hematoma (25.1%), but the rate of serious complications that required surgical intervention or embolization was very low (1.0%). There was no death or nephrectomy case in our study. CONCLUSION: IgAN was the most common primary GN in this study. The multi-center studies are needed to evaluate the distribution and changing trends of renal disease in Korea.

Study of Ex Vivo Growth Characteristics of N-Nitrosomorpholine Treated Rat Hepatocytes / 대한암학회지

PURPOSE: The early carcinogenic effect of N-nitrosomorpholine (NNM) on acquisition of increased survival and growth was investigated using ex vivo culture of 5th to 10th week rat liver hepatocytes after NNM treatment. MATERIALS AND METHODS: Rats were fed with NNM (200 mg/l). Hepatocytes were isolated by two step perfusion techniques and grown on tissue culture. These ex vivo hepatocytes were then subjected to analysis of growth related signal molecules resided in nucleoli. RESULTS: One of the most characteristic differences of the NNM-treated liver from normal liver was genesis of megahepatocytes. These megahepatocytes survived approximately 2~3 times as long as normal hepatocytes in ex vivo conditions. There was also a significant increase in various nucleolar proteins, including Erk1/2, p38, hsp72 and nucleophosmin (B23). CONCLUSION: At promotion stage of tumorigenesis induced by NNM, it was possible to isolate and characterize abnormal hepatocytes. These abnormal hepatocytes showed increased survival in in vitro (ex vivo) than normal hepatocytes, although they were not immortal.

The Comparison of the Effect of Enflurane and Propofol on Arterial Oxygenation during One-Lung Ventilation / 대한마취과학회지

BACKGROUND: Controversy exists as to whether or not inhalation anesthetics and intravenous anesthetics impair arterial oxygenation (PaO2) during one lung ventilation (OLV). Accordingly, we examined the effect of enflurane and propofol on PaO2 and pulmonary vascular resistance (PVR) during OLV. METHODS: Forty patients, who had prolonged periods of OLV anesthesia with minimal trauma to the nonventilated lung were studied in a cross over design. Patients were randomized to four groups; Group 1 received 1 MAC of enflurane and oxygen from induction until the first 20 min after complete lung collapse, then were switched to propofol 100 g/kg/min (P100). In group 2, the order of the anesthetics was reversed. Group 3, Group 4 received the same order of the anesthetics as Group 1, Group 2, respectively but received propofol 200 g/kg/min (P200). RESULTS: During OLV, the PaO2 values were lower than those with two lung ventilation (TLV), there were no significant differences among each groups and between propofol and enflurane in PaO2, but in the selected patients (n=10, PaO2<120 mmHg during OLV), PaO2 in propofol group was higher than that of enflurane group (p<0.05). Conversion from TLV to OLV caused a significant increase in PVR, but there were no difference in PVR between propofol and enflurane group. CONCLUSIONS: These results suggest that the usual clinical dose of propofol affords no advantage over 1 MAC of enflurane anesthesia except low PaO2 patients during OLV. Propofol might be of value in risk patients of hypoxemia during thoracic surgery when OLV is planned.

Anesthetic Experience for Liver Transplantation in Children from a Living Related Donor: 3 reports / 대한마취과학회지

We managed three cases of anesthesia for living related liver transplantation from December 1994 to July 1995. Donors were recipient's parents and two of them were 35-year old man, the other was 25-year-old woman. The recipients were suffered from congenital liver diseases (two of them were diagnosed as biliary atresia and the other Byler's disease). They had presented severe jaundice and cholangitis and their mean age & body weight were 15 +/- 4.9 months and 8.6 +/- 1.22 kg, respectively. Average duration of anesthesia was about 15 hours, and anhepatic time was 140 minutes, 80 m inutes and 50 minutes, respectively. Careful attention was paid to body temperature, serum potassium, ionized calcium, blood coagulation function, as well as to general condition and respiratory function. Hemodynamic value was relatively stable through out the operation and postoperative mechanical ventilatory support was required for about 3 days.

The Preventive Effect of Pentoxifylline on the Oleic Acid-Induced Lung Injury / 대한마취과학회지

BACKGROUND: Although exact mechanism of adult respiratory distress syndorme (ARDS) is not known, many evidences suggest that inflammatory mediators such as protease and oxygen radicals may be the final common pathway to the endothelial injury. It is gradually accepted that activated neutrophils play a major role in the process. Pentoxifylline is a methylated xanthine with a wide range of actions that make it theoretically useful in the treatment of ARDS. Studies show that it decreases neutrophil phagocytosis and superoxied production. The aim of this experiment is to determine whether pentoxifylline has a preventive effect on oleic acid-induced lung injury. METHODS: Oleic acid (0.08 ml/kg) was infused in 10 mongrel dogs in order to induce acute lung injury. Pentoxifylline (20 mg/kg) was administered 40 mins before oleic acid injection. The author made a comparative studies on the effects of pentoxifylline on hemodynamics and gas exchange before oleic acid injection and at 15, 30, 45, 60, 90 mins after oleic acid injection. RESULTS: There were not significant changes in mean arterial pressure, cardiac output, systemic vascular resistence, pulmonary wedge pressure intrapulmonary shunt in both groups. There were statistical significance in arterial oxygen tension, pulmonary artery pressure, pulmonary vascular resistance between both groups (p<0.05). CONCLUSIONS: Pentoxifylline is a noteworthy drug that could be a candidate as a therapy to help prevent effect in lung injuries that share a common mechanism with oleic acid-induced lung injury.