No abstract available.
Diagnosis, Differential* ; Tachycardia* ; Tachycardia, Supraventricular*

No abstract available.
Atrial Fibrillation*

No abstract available.

Background: Cerebral palsy is due to static encephalopathy during perinatal period. Selective dorsal rhizotomy (SDR) involves selective division of posterior nerve roots to reduce spasticity and improve function in children with spastic cerebral palsy. Anesthesia during SDR must preserve muscle contraction in response to direct electrical stimulation of the dorsal nerve roots. We did this study to get the better management of anesthesia for SDR. Methods: Anesthetic records were reviewed for 16 patients who underwent SDR during January 1996 to August 1997. Demographic data; anesthetic drugs and doses; changes of vital signs and end tidal CO2; dorsal root stimulation; postoperative pain control were analysed. Results: The mean age of patients was 4.9+/-1.7 years old. The mean weight was 16.3+/-4.0 kg. The under 1 MAC concentration of isoflurane and 2~3 mcg/kg/hr fentanyl did not interfere with electrophysiologic monitoring. Esophageal temperature was increased significantly during electrical stimulation of dorsal roots. End tidal CO2 concentration had a tendency to increase after electrical stimulation too. Direct installation of 10~15 mcg/kg intrathecal morphine prior to dural closure, and postoperative 0.5 mcg/kg/hr fentanyl had a good postoperative analgesia without complication. Conclusions: Isoflurane and fentanyl during anesthesia, and intrathecal morphine with continuous infusion of fentany postoperatively are suggested a good anesthetic method for SDR.
Analgesia ; Anesthesia ; Anesthetics ; Cerebral Palsy ; Child ; Electric Stimulation ; Fentanyl ; Humans ; Isoflurane ; Morphine ; Muscle Contraction ; Muscle Spasticity ; Pain, Postoperative ; Rhizotomy* ; Spinal Nerve Roots ; Vital Signs

No abstract available.
Barium* ; Enema* ; Intussusception*

No abstract available.
Abdominal Pain* ; Humans

No abstract available.
Abdominal Pain* ; Humans

No abstract available.

BACKGROUND: Although immunophenotyping of leukemias has improved diagnostic accuracy and reproducibility, it has also caused diagnostic confusion regarding the lineage of leukemic cells. So far, lots of papers about acute leukemias with coexpression of another lineage markers with different technical methodologies and different criteria have been published in Korea and other countries. The authors investigated the frequency and immunophenotypic characteristics of the leukemias with aberrant lineage markers from data obtained at Korea University Hospital by a retrospective study. METHODS: From Jan. 1993 to Feb. 1996, 179 leukemias had been requested for immunophenotypig and 28 cases among them with unusual immunophenotypes were retrieved according to their immunophenotyping results. For the final diagnosis all the slides stained with Wright-Giemsa, peroxidase, Periodic-Acid Schiff, Sudan black B, and nonspecific esterase were re-examined, and all the flow cytometric results were reanalyzed. RESULTS: Among 28 cases, 3 cases(10%) were acute biphenotypic leukemias(BP) one with B lymphoid and myeloid markers and the other two with T lymphoid and myeloid markers. One case of intralineage bilinear acute leukemia(ILBL) with two separate populations of megakaryocytic cells and monocytic cells was noted. 6 cases(21%) were acute myeloblastic leukemias expressing lymphoid associated markers(Ly+AMLs; CD19) and 8 cases(28%) were myeloid antigen-positive acute lymphoblastic leukemias(My+ALLs, four with CD13+ and three with CD33+ and one with blastic transformation of chronic myelogeneous leukemia). Because of the change in diagnostic criteria, lymphocyte contamination, or low setting of negative control, 10 cases (36%) were not included to be of unusual immunophenotypes. CONCLUSIONS: Frequency of acute hybrid leukemia was 2.2 % of all leukemias. Ly+AMLs was 3.4%, and My+ALL was 4.4%. In conclusion, first, quality control of the flow cytometry and careful interpretation especially in terms of positive cut-off value and gating, are needed. Secondly, national guidelines for the criteria of the hybrid leukemia and My+ALLs and Ly+AMLs are necessary for the elucidation of the prognostic implication of those leukemias.
Carboxylesterase ; Diagnosis ; Flow Cytometry ; Immunophenotyping ; Korea ; Leukemia* ; Leukemia, Myeloid, Acute ; Lymphocytes ; Peroxidase ; Quality Control ; Retrospective Studies ; Sudan

Serial meanurements of the pacing threshold have been considered as essential for follow-up of the patients in whom the pacemaker had been implanted because pacing threshold is directly related to the success of long-term pacemaker therapy and reflects the alterations in electrobiologic factors influencing it. The development of the noninvasive technique of measuring pacing threshold such as Vario system made the noninvasive follow-up of it feasible and therefore has contributed to understanding of long-term threshold behavior. This study was performed to get the knowledge of acute and chronic pacing threshold behavior by measuring it serially in 46 patients after pacemaker implantation using a non invasive technique of Vario system. Patients subjected to the present study were 46(18 males, 28 females) comprising 21 sick sinus syndromes, 24 A-V blocks, and 1 combined disorder. All were received a multiprogrammable pacemaker of VVI mode (OPTIMA-MP, Telectronics). Pacing threshold was increased significantly from initial threshold(0.65+/-0.22) 2 days after implantation and reached to peak(1.65+/-0.75 volts) in the fourth week, thereafter it was maintained around twice the initial value. In the 30 patients followed more than 3 months, the maximum increase and difference in pacing thresholds were 0.86+/-0.62 volts and 0.93+/-0.56 volts respectively and the ratios of peak threshold and threshold at the end of follow-up to initial threshold were 2.56+/-1.23 and 2.30+/-1.30 respectively. Pacing threshold exceeded 2.0 volts in 7 patients(15.2%), but transiently in 3 of 5 patients in whom it happened within 6 weeks after implantation. Safety margins of long-term thresholds were acceptable(more than 3) in all patients at 5.0 volts and 19(63.3%) at 2.5 volts of programmed output.
Follow-Up Studies ; Humans ; Male