The purpose of this study is to evaluate the relationship between arterial and end-tidal CO2 tension during general anesthesia. Sixty one patients age 21~40 years old without history of cardiopulmonary disease in American Society of Anesthesiologists physical status 1, were studied. Thoracic or upper abdominal operations were excluded in this study. Anesthesia was maintained by halothane, nitrous oxide and oxygen. Respirations were controlled in all patients with a Dameca ventilator and minute volumes were adjusted to provide FECO2 levels considered appropriate by anesthetist. The concentration of end-tidal carbon dioxide was continuously monitored with ENGS TROM ELIZA DUO CO2 and O2 analyzer. The radial artery was punctured 30 minutes after the surgical incision and 7oth arterial and endtidal carbon dioxide tension were measured simultaneously. The results were as follows : 1) The mean arterial to end-tidal CO2. tension difference was 2.5+/-3.9 torr. 2) There was a constant correlation between arterial and end-tidal CO2 tension regardless of the degree or minute volume. 3) There was no significant correlation 7etween smokers and non-smokers in male patients.
Anesthesia ; Anesthesia, General* ; Body Weight* ; Carbon Dioxide ; Halothane ; Humans ; Male ; Nitrous Oxide ; Oxygen ; Radial Artery ; Ventilators, Mechanical

No abstract available.
Antibodies*

Diagnosis* ; Electric Impedance* ; Humans ; Obesity* ; Pediatric Obesity

PURPOSE: Poisoning represents one of the most common accidents encountered by young children. Recently, mortality due to poisoning has gradually decreased, but the incidence has not decreased. We performed this study to compare the following factors during 1980's and 1990's : sex distribution, urban and rural distribution, causative substances. METHODS: A clinical study was performed on 90 cases of acute poisoning who were admitted in the pediatric department of Cho Sun University Hospital from Jan. 1980 to Aug. 1995. RESULTS: 1) The poisoning occured more frequently in males than in females, and the highest incidence was observed in the 1 to 5 year age group(50.0%). 2) Seasonal incidence was more prevalent in summer(from June to August). 3) The frequency of poisoning in the country was higher than in urban, but no significant difference between urban and the country in 1990s. 4) The causative substances were agricultural chemicals(36.7%), drugs(23.3%), household inseticide(21.1%). 5) In 1990s, poisoning due to houshold insecticide was decreased, whereas poisoning due to drug increased. 6) The cause of poisoning was mainly accidental(82.2%). 7) Accident was the leading cause of poisoning in children up to 10 years old, whereas suicidal attempts happened at the 10 to 15 year age group. 8) Death in the hospital was one case(1.1%). CONCLUSIONS: Urban incidence gradually increased and accidental poisoning due to medicine also increased. So, we conclude that prevention such as education and use of grip-tight cap or similar safety devices is important.
Child* ; Education ; Family Characteristics ; Female ; Humans ; Incidence ; Male ; Mortality ; Poisoning* ; Protective Devices ; Seasons ; Sex Distribution ; Solar System

Short-bowel syndrome is functionally defined as a state of malabsorption following loss of small bowel, which comprises the sequelae of nutrient, fluid, and weight loss. The proximal segment of the bowel of a patient with intestinal atresia is usually grossly distended and atonic. In contrast, distal segment is smaller. For this reason, anastomosis of the proximal and the distal segment is technically difficult and may cause no propulsion even when they are anastomosed. We experienced that continuous drip ileostomy feeding with the secretions from the proximal stoma stimulated the distal bowel to accommodate and resolved many sequelae following loss of small bowel in a patient with short-bowel syndrome due to IIIa ileal atresia.
Humans ; Ileostomy* ; Infant, Newborn* ; Intestinal Atresia ; Weight Loss

Paraneoplastic cancer polyarthritis is a very rare manifestation of musculoskeletal disorders associated with several solid and hematologic malignancies. We describe a 71-year-old woman who presented initially with an abrupt onset of rheumatoid arthritis-like symmetrical polyarthritis. The patient was diagnosed with pancreatic cancer with multiple hepatic metastases approximately six months later. Her symptoms of polyarthritis improved after the introduction of medication including non-steroidal anti-inflammatory drugs and disease modifying anti-rheumatic drugs. This case suggests that a hidden malignancy should always be considered in elderly patients, who present with an abrupt onset of symmetric polyarthritis for the first time in their life.
Aged ; Antirheumatic Agents ; Arthritis ; Arthritis, Rheumatoid ; Female ; Hematologic Neoplasms ; Humans ; Neoplasm Metastasis ; Pancreatic Neoplasms ; Paraneoplastic Syndromes

Objectives: . A polydioxanone (PDO) stent was developed to treat tracheomalacia in pediatric patients. However, its safety and efficacy need to be verified in animal studies before clinical trials in patients can be conducted. This study evaluated the safety and efficacy of a PDO stent in normal and tracheomalacia-model rabbits. Methods: . In total, 29 New Zealand white rabbits were used: 13 for evaluating the biocompatibility of the PDO stent in normal rabbits and 16 for the creation of a tracheomalacia model. The tracheomalacia model was successfully established in 12 rabbits, and PDO stents were placed in eight of those rabbits. Results: . The PDO stent was successfully positioned in the trachea of the normal rabbits using an endoscopic approach, and its degradation was observed 10 weeks later. The stent fragments did not induce distal airway obstruction or damage, and the mucosal changes that occurred after stent placement were reversed after degradation. The same procedure was performed on the tracheomalacia-model rabbits. The survival duration of the tracheomalacia rabbits with and without stents was 49.0±6.8 and 1.0±0.8 days, respectively. Thus, the PDO stent yielded a significant survival gain (P=0.001). In the tracheomalacia rabbits, stent degradation and granulation tissue were observed 7 weeks after placement, leading to airway collapse and death. Conclusion . We successfully developed a PDO stent and an endoscopic guide placement system. The degradation time of the stent was around 10 weeks in normal rabbits, and its degradation was accelerated in the tracheomalacia model. The mucosal changes associated with PDO stent placement were reversible. Placement of the PDO stent prolonged survival in tracheomalacia-model rabbits.

Objectives: . A polydioxanone (PDO) stent was developed to treat tracheomalacia in pediatric patients. However, its safety and efficacy need to be verified in animal studies before clinical trials in patients can be conducted. This study evaluated the safety and efficacy of a PDO stent in normal and tracheomalacia-model rabbits. Methods: . In total, 29 New Zealand white rabbits were used: 13 for evaluating the biocompatibility of the PDO stent in normal rabbits and 16 for the creation of a tracheomalacia model. The tracheomalacia model was successfully established in 12 rabbits, and PDO stents were placed in eight of those rabbits. Results: . The PDO stent was successfully positioned in the trachea of the normal rabbits using an endoscopic approach, and its degradation was observed 10 weeks later. The stent fragments did not induce distal airway obstruction or damage, and the mucosal changes that occurred after stent placement were reversed after degradation. The same procedure was performed on the tracheomalacia-model rabbits. The survival duration of the tracheomalacia rabbits with and without stents was 49.0±6.8 and 1.0±0.8 days, respectively. Thus, the PDO stent yielded a significant survival gain (P=0.001). In the tracheomalacia rabbits, stent degradation and granulation tissue were observed 7 weeks after placement, leading to airway collapse and death. Conclusion . We successfully developed a PDO stent and an endoscopic guide placement system. The degradation time of the stent was around 10 weeks in normal rabbits, and its degradation was accelerated in the tracheomalacia model. The mucosal changes associated with PDO stent placement were reversible. Placement of the PDO stent prolonged survival in tracheomalacia-model rabbits.

BACKGROUND: According to previous studies on peritoneal membrane function, solute transport significantly increased 3 years after the begining of peritoneal dialysis. However, there were only few reports regarding the change of peritoneal membrane function in long-term CAPD patients in Korea. METHODS: Clinical factors affecting peritoneal membrane function were analyzed, in patients who maintained CAPD more than 5 years. 124 patients performed peritoneal equilibration test(PET) 5 years after CAPD were included. Cross sectional study was performed to know the differences of clinical characteristics among 4 types of peritoneal membrane transport characteristics based on PET. Also, clinical factors affecting peritoneal memebrane function were analyzed in 31 patients who had undertaken PET initially and 5 years after the beginning of CAPD. RESULTS: D/P Cr was the highest(p<0.001) and ultrafiltration was the lowest(p=0.011) in high transport group. Also, the number of hypertonic glucose exchanges(more than 2.5%) per day was the highest (p=0.02), and serum albumin was the lowest(p<0.001) in this group. 17 patients were included in ultrafiltraion failure group. D/P Cr and the number of hypertonic glucose exchanges was significantly higher (p<0.001, p<0.001, respectively) and the duration of peritoneal dialysis was significantly longer(p=0.033) in ultrafiltration failure group compared with the others. D/P Cr of 124 patients was well correlated with the number of peritonitis(gamma=0.246, p=0.006), and the number of hypertonic glucose exchanges(gamma=0.33, p<0.001), but inversely correlated with serum albumin(gamma=-0.452, p<0.001) with the statistical significance. In 31 patients who undertook PET within 1 year after the begining of CAPD, although not significant, D/P Cr increased and ultrafiltration decreased after 5 years. A significant increase in D/P Cr(p=0.014) was seen in patients who experienced more than 2 episodes of peritonitis(n=14), compared with patients who experienced either peritonitis free or single episode of peritonitis(n=17). The linear regression analysis showed that the number of peritonitis and the number of hypertonic glucose exchanges per day were significantly correlated with the increased D/P Cr after 5 years(p=0.001, p=0.003, respectively). CONCLUSION: Clinical factors affecting peritoneal membrane function were the number of peritonitis, the use of hypertonic glucose exchanges and the duration of peritoneal dialysis. To preserve peritoneal membrane function, it is recommended to avoid hypertonic glucose exchanges and to reduce the number of peritonitis.
Glucose ; Humans ; Korea ; Linear Models ; Membranes* ; Peritoneal Dialysis ; Peritoneal Dialysis, Continuous Ambulatory* ; Peritonitis ; Serum Albumin ; Ultrafiltration

Although the fertilization rate exceeds to 80~90% with much progress in vitro fertilizaton and embyo transfer(IVF-ET) program, the prgnancy rate rmains at 20~30%, and the endometrial implantaion rate per embryo transferred at 10~15%. Recently, many attempts have been made to improve embrynic implantion after IVF-ET including serveral procedures of assisted hatching(AH) using micromanipulation, and pregnacies and births have been obtained after AH. This clinical study was performed to develop and estabilish AH as an effective procedure to improve embryonic implantioan in IVF-ET patients who had previous repeated failure of standard IVF-ET more than 2 times(Group R), were more than 37 years old(Group A), or had high basal serun FSH levels more than 15 mIU/ml(Group F). From January, 1995 to Februry, 1996, 132 cycles of AH using partial zona dissection(PZD) were performed in 104 infertile patients, and the outcomes of AH were analyzed according to pregnancy rate. The number of oocytes retrieved after controlled ovarian hyperstimulation(COH) was 9.9+/-7.1 in 71 cycles of 54 patients who had previous repeated failure more than two times(Group I: Group R,R+A,R+F, and R+A+F), 8.4+/-5.9 in 62 cycles of 46 patients whose age was more than 37 years old(Group II : Groups A, R+A, A+F, and R+A+F), and 8.7+/-6.5 in 49 cycles of 47 patients who had high basal serum FSH levels more than 15 mIU/ml(Group III:Groups F,R+F, A+F, and R+A+F). The number of embroys transferred after AH was 4.7 +/-1.8 in Group I, 4.2 +/-1.9 in Group II, and 4.2+/-2.0 in Froup III. The mean cumulative embryo score(CES) was 56.8+/-30.0 in Group I, 52.6+/-30.6 in Group II, and 52.6+/-29.9 in Group III. There were no significant differences in the numbers of oocytes rerieved and embryos transferred, and CES among 3 groups. The overall clinical pregnancy rate was 14.4%(19/132) per cycle and 18.3%(19/104) per patient. THe clinical pregnancy rate per cycle and per patient was 12.7%(9/71) and 16.7%(9/54) in Group I, 4.8% (3/62) and 6.5%(3/46) in Group II, and 26.5%(13/49) and 27.7%(13/47) in Group III, and there was a significant difference between Group II and Group III. In conclusion, AH of human embryos using micromanipulation might be promising for IVF-ET patients, especially with the past history of repeated failure, old age, and high basal serum FSH level and AH will provide a range of novel techiques which may dramatically improve the implanatation and pregnancy rates in IVF-ET program and contribute much to effective management of infertile couples.
Embryo Transfer* ; Embryonic Structures* ; Family Characteristics ; Fertilization ; Herpes Zoster ; Humans ; Micromanipulation* ; Oocytes ; Parturition ; Pregnancy Rate