1.The Analysis of Emergency Medical Transport by EMS Helicopter.
Hyoung Gon SONG ; Byeong Cheol KIM ; Keun Jeong SONG ; Yeon Kwon JEONG ; Baek Hyo SHIN
Journal of the Korean Society of Emergency Medicine 1998;9(4):543-550
BACKGROUND: The fast EMS helicopter was introduced to Korea in 1996 and from Dec. 1. 1997, it was used far transporting emergent patients. Authors, here upon, report the transporting experiences. METHODS: From Dec. 1, 1996 to Dec. 31,1997, Samsung Medical Centers EMS helicopter was used for air evacuation of critically ill patients. The patients data prospectively analyzed. RESULT: A total of 65 patients were transported. Male to female ratio was 1.95 : 1. The mean transport time was 64.1min(10-160 min). Majority of the evacuated patients was surgical patients (General Surgery'16, Orthopedic surgery : 10, Neurosurgery : 6, Infernal medicine 13, Pediatrics : 3, and others : 3). Twenty-one of the 65 patients transported were admitted to ICU and 31 did not require ICU care. During the air evacuation, one physician and one nurse trained for air evacuation amended The patients. No medical problems or deaths developed during the air evacuation period. CONCLUSION: The first EMS helicopter was introduced to Korea in 1996. From Dec. 1, 1996 to Dec. 31, 1997, Samsung Medical Center's EMS helicopter was used for air evacuation of critically ill patients. The patients data reported.
Aircraft*
;
Critical Illness
;
Emergencies*
;
Female
;
Humans
;
Korea
;
Male
;
Neurosurgery
;
Orthopedics
;
Pediatrics
;
Prospective Studies
2.The Results of Curative Radiotherapy for the Uterine Cervical Cancer.
Jung Soo KIM ; Hyoung Cheol KWON ; Jin Kee KIM ; Byung Chan OH ; Hyoung Jin KIM
Journal of the Korean Society for Therapeutic Radiology 1996;14(3):191-199
PURPOSE: To evaluate 5-year survival rate, patterns of failure and complications of cervical cancer treatment, fifty nine patients treated by curative cancer were analyzed retrospectively. METHODS AND MATERIALS : From March 1986 to May 1990, fifty nine patients with histologically proven uterine cervical cancer were analyzed. According to FIGO stage, there were 2 patients (3.4%) in stage Ib, 2 patients (3.4%) in stage IIa, 31 patients (52.5%) in stage IIb, 15 patients (25.4%) in stage IIIb, 9 patients (15.3%) in stage IV, External RT was per formed by 6 MVLINAC with daily 1.8 Gy, 5 times per week and followed by ICR, A point dose of ICR was calculated to 30-43.66 Gy (median : 34.6Gy). These techniques delivered total A point dose of 80.4 to 109.8 Gy (median : 85Gy). Patients had been followed up from 2 to 110 months (median : 61 months) RESULTS: The overall 5-year survival rate & disease free survival rate were 55.9% and 55.0 % respectively. According to FIGO stage, the 5-year survival rate for less than Iia, IIb, IIIb, IV were 75.0%, 74.8%, 26.7%, 33.3%, respectively. In univariate analysis, the 5-year survival rate for stage IIb and below versus stage llla and above revealed 74.8%, 29.2% respectively (p<0.005). According to FIGO stage, the 5-year survival rate for less than lla, llb, lllb, IV were 75.0%, 74.8%, 26.7%, 33.3%, respectively. In univariate analysis, the 5-year survival rate for stage llb and below versus stage llla and aboce revealed 74.8%, 29.2% respectively (p<0.005). According to the hemoglobin level during RT, the 5-year survival rate of was 73.3% for patients with Hg 10 gm/dL or higher, in contrast to 0% for those with lower than 10 gm/dL (p<0.005). In 18 patients with nonbulky tumor (<5 cm), the 5-year survival rates were 71.8%. The 5-year survival rates for 18 patients with 5 cm or greater in tumor diameter were 22.2% (p<0.005). The 5-year survival rate for patient age of above 50 years and below were 65.3%, 34.2% respectively (p<0.05). ECOG performance status, pathologic finding, total dose, total treatment time were not statistically significant factors. The significant prognostic factors affecting overall 5-year survival rate by multicariate analysis showed the hemoglobin level during RT (p=0.0001), tumor size (p=0.0390), FIGO stage (p=0.0468) Total recurrence rate was 23.7%; local failure 15.2% (9/59), distant metastasis 6.8% (4/59), local and distant metastasis 1.7% (1/59). According to the RTOG/EORTC Soma Scales, the late complication rate was 23.8% (14/59). The late complication rate of colorectum and genitourinary tract were 15.3% (9/59), 8.5% (5/59), respectively : 10 patients(17.0%) were grade 2, 3 patients (5.1%) were grade 3 and one patient (1.7%) (1/59). According to the RTOG/EORTC Soma Scales, the late complication rate was 23.8% (14/59). The late complication rate of colorectum and genitourinary tract were 15.3% (9/59), 8.5% (5/59), respectively : 10 patients (17.0%) were grade 2,3 patients (5.1%) were grade 3 and one patient(1.7%) was grade 4. The late complications were radiation proctitis, rectal bleedint, radiation colitis, diarrhea and radiation cystitis in decreasing order. CONCLUSION: For improvement of therapeutic results, prospective randomized trials are recommended to discover new prognostic factors and more aggressive radiation therapeutic methods are needed for poor prognostic patients. The adjuvant chemotherapy or radiation-sensitizing agents must be considered to inhibit regional and distant metastasis.
Carisoprodol
;
Chemotherapy, Adjuvant
;
Colitis
;
Cystitis
;
Diarrhea
;
Disease-Free Survival
;
Humans
;
Neoplasm Metastasis
;
Proctitis
;
Radiation-Sensitizing Agents
;
Radiotherapy*
;
Recurrence
;
Retrospective Studies
;
Survival Rate
;
Uterine Cervical Neoplasms*
;
Weights and Measures
3.Endotracheal Intubation in the Emergency Department of an Tertiary Care Center.
Byeong Cheol KIM ; Bo Seung KANG ; Hyoung Gon SONG ; Jeong Hun LEE ; Keun Jeong SONG ; Yeon Kwon JEONG
Journal of the Korean Society of Emergency Medicine 1999;10(4):579-586
BACKGROUND: The purpose of this study was to analyze the endotracheal intubation cases performed in the emergency department. METHODS: We investigated retrospectively 326 cases of endotracheal intubation performed in the emergency department of a tertiary care center from April 1, 1998 to March 31, 1999. We focused on operators, medications used, its success rate and immediate complications, and the relationship between its success rate and medications. RESULTS: Of 326 consecutive intubations, 193 patients(59.2%) were done by emergency medicine residents or attending physician. While 320 patients(98.2%) were successfully intubated, 6 patients could not be intubated and 2 patients underwent tracheostomy. Of 50 cases of intubations(15.3%) attempted with paralyzing agents, 48 cases were done with succinylcholine and 46 cases underwent by emergency physicians. Intubations with neuromuscular paralysis resulted in high success rates at the first attempt. Of 55 immediate adverse events were encountered in 47 patients(desaturation=17, bronchial intubation=15, hypotension=8, bradycardia=4, cardiac arrest=2, others=5). CONCLUSION: At this institution, paralyzing agents were used infrequently, but almost all of them were used by emergency physicians.
Emergencies*
;
Emergency Medicine
;
Emergency Service, Hospital*
;
Humans
;
Intubation
;
Intubation, Intratracheal*
;
Paralysis
;
Retrospective Studies
;
Succinylcholine
;
Tertiary Care Centers*
;
Tertiary Healthcare*
;
Tracheostomy
4.Anti-tumor Effect of Combined Betacarotene with X-irradiation in the Mouse Fibrosarcoma : Cytotoxicity and Tumor Growth Delay.
Hyoung Cheol KWON ; Moon Sik YANG
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2000;18(2):133-137
PURPOSE: To investigate whether combined beta-carotene with X-irradiation has more enhanced radition response than X-irradiation or not, we performed a experiment about in vitro cytotoxicity of beta-carotene and/or X-irradiation in the fibrosarcoma cells, tumor growth delay of combined beta-caroten with/or X-irradiation in the mouse fibrosarcoma. MATERIALS AND METHODS: 2% emulsion of beta-carotene was serially diluted and used. X-irradiation was given by 6 MeV linear accelerator. The cytotoxicity of beta-carotene in vitro was evaluated from clonogenic assay. To compare the cytotoxicity between combined beta-carotene with X-irradiation and X-irradiation group, 2 mg/ml of beta-carotene was contacted to fibrosarcoma (FSaII) cells for 1 hour before X-irradiation. For the tumor growth delay, single 20 Gy was given to FSaII tumor bearing C3H/N mice whic was classified as beta-crotene with X-irradiation group (n=6) and X-irradiation alone group (n=5). 0.2 ml of 20 mg/kg of beta-carotene were i.p. injected to mice 30 minute before X-irradiation in the beta-crotene with X-irradiation group. The tumor growth delay defined as the time which reach to 1,000 mm3 of tumor volume. RESULT: (1) Cytotoxicity in vitro; 1) survival fraction at beta-carotene concentration of 0.002, 0.02, 0.2 and 2 mg/ml were 0.69+/-0.07, 0.59+/-0.08, 0.08+/-0.008 and 0.02+/-0.006, respectively. 2) each survival fraction at 2, 4, 6 and 8 Gy in the 2 mg/ml of beta-carotene + X-irradiation group were 0.13+/-0.05, 0.03+/-0.005, 0.01+/-0.002 and 0.009+/-0.0008, respectively. But each survival fraction at same irradiation dose in the X- irradiation group were 0.66+/-0.05, 0.40+/-0.04, 0.11+/-0.01 and 0.03+/-0.006, respectively( p<0.05). (2) The time which reach to 1,000 mm3 of tumor volume of beta-carotene + X-irradiation group and X-irradiation alone group were 18, 19 days, respectively( p>0.05). CONCLUSION: The contact of beta-caroten to FSaII cells showed mild cytotoxicity which was increased according to concentration. The cytotoxicity of combined beta-carotene with X-irradiation more increased than that of X-irradiation, additionaly. And there was significant difference of cytotoxicity between two groups. But there were no significant difference of the growth delay of fibrosarcoma between two groups.
Animals
;
beta Carotene*
;
Fibrosarcoma*
;
Mice*
;
Particle Accelerators
;
Tumor Burden
5.An Experimental Dosimetry of Irregularly Shaped Fields Using Therapeutic Planning Computer.
Hyoung Cheol KWON ; Yoon Kyeong OH ; Sei Chul YOON ; Young Whee BAHK
Journal of the Korean Society for Therapeutic Radiology 1984;2(2):281-285
The authors have intended to measure intrinsic dose distribution by Farmer dosimeter in irregularly shaped fields such as L.M. and T shape models in order to determine dose in homogeneity in those models. We made 2 off-xis points in each model and measured the depth dose at 1.5, 5 and 9cm below surface. The results showed 1~3% dose discrepancy between 2 points. We also measured the depth dose by geometric approximation and computer calculation in those models, and came to the conclusion that computer calculation using Clarkson's principle is simpler and the measurements are closer to the ideal data obtained by the experiment in three models of irregularly shaped fields than those of geometric approximation method.
6.Open Reduction Through the Modified Volar Approach in Complex Dorsal Dislocations of the Metacarpophalangeal Joint.
Soo Joong CHOI ; Bong Cheol KWON ; Yong Beom LEE ; Won Hyoung SHIN
Journal of the Korean Society for Surgery of the Hand 2011;16(3):149-153
PURPOSE: To describe the surgical treatment of the complex dorsal metacarpophalangeal dislocations and its results, emphasizing on the modified volar approach with A1 pulley release. MATERIALS AND METHODS: We experienced 6 cases of dorsal dislocation of the metacarpophalangeal joint. We performed open reduction with the modified volar approach described by Eaton and Dray. Postoperatively posteroanterior and lateral radiographs of the index finger metacarpophalangeal joint and metacarpophalangeal joint range of motion was followed. RESULTS: One case with a large osteochondral fracture was operated with volar and doral approach both. Overall end results were good without any significant restriction of motion and stability of the fingers. CONCLUSION: Modified volar approach with A1 pulley release is an excellent method for complex dorsal metacarpophalangeal dislocations without osteochondral fracture.
Benzodiazepines
;
Dislocations
;
Fingers
;
Metacarpophalangeal Joint
;
Range of Motion, Articular
7.An Analysis of the Incidence and Related Factors for Radiation Dermatitis in Breast Cancer Patients Who Received Radiation Therapy.
Sun Young LEE ; Hyoung Cheol KWON ; Jung Soo KIM ; Heui Kwan LEE
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2010;28(1):16-22
PURPOSE: We analyzed the incidence and related factors of radiation dermatitis; at first, to recognize whether a decrease in radiation dermatitis is possible or not in breast cancer patients who received radiation therapy. MATERIALS AND METHODS: Of 338 patients, 284 with invasive breast cancer who received breast conservation surgery with radiotherapy at Chonbuk National University Hospital from January 2007 to June 2009 were evaluated. Patients who also underwent bolus, previous contralateral breast irradiation and irradiation on both breasts were excluded. For patients who appeared to have greater than moderate radiation dermatitis, the incidence and relating factors for radiation dermatitis were analyzed retrospectively. RESULTS: A total of 207 and 77 patients appeared to have RTOG grade 0/1 or above RTOG grade 2 radiation dermatitis, respectively. The factors found to be statistically significant for the 77 patients who appeared to have greater than moderate radiation dermatitis include the presence of lymphocele due to the stasis of lymph and lymph edema which affect the healing disturbance of radiation dermatitis (p=0.003, p=0.001). Moreover, an allergic reaction to plaster due to the immune cells of skin and the activation of cytokine and concomitant hormonal therapy were also statistically significant factors (p=0.001, p=0.025). CONCLUSION: Most of the breast cancer patients who received radiation therapy appeared to have a greater than mild case of radiation dermatitis. Lymphocele, lymphedema, an allergy to plaster and concomitant hormonal therapy which affect radiation dermatitis were found to be significant factors. Consequently, we should eliminate lymphocele prior to radiation treatment for patients who appear to have an allergic reaction to plaster. We should also instruct patients of methods to maintain skin moisture if they appear to have a greater than moderate case of radiation dermatitis.
Breast
;
Breast Neoplasms
;
Dermatitis
;
Edema
;
Humans
;
Hypersensitivity
;
Incidence
;
Lymphedema
;
Lymphocele
;
Skin
8.Treatment Outcome of Locally Advanced Non-small Cell Lung Cancer.
Heui Kwan LEE ; Hyoung Cheol KWON ; Sun Young LEE ; Jung Soo KIM
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2006;24(4):237-242
PURPOSE: We evaluated retrospectively the outcome of locally advanced non-small cell lung cancer patients treated with definitive radiotherapy to find out prognostic factros affecting survival. MATERIALS AND METHODS: 216 cases of stage IIIB non-small cell lung cancer were with treated radiotherapy at our Hospital between 1991 to 2002 and reviewed retrospectively. Cases were classified by mode of treatment and response to treatment. Patients showing complete response or partial response to treatment were included in the "response group", while those showing stable or progressive cancer were included in the "non-response group". RESULTS: 30 patients completed the planned radiotherapy treatments and 39 patients completed combined treatments or chemoradiotherapy. Median survival was 4.6 months for patients treated with radiotherapy and 9.9 months for those undergoing combined radiotherapy and chemotherapy. Survival rates for the first year were 13.3% with radiotherapy and 35.9% with chemoradiotherapy. In the second year, 3.3% of the radiotherapy patients survived and 20.5% of the patients receiving chemoradiotherapy survived. By the third year, 15.4% of the patients receiving the combined treatments survived. None of the patients treated with radiotherapy alone lived to the third year, however. Overall survival was significantly different between the radiotherapy patients and the combined chemoradiotherapy patients (p<0.001). In the response group, median survival was 7.2 months with radiotherapy and 16.5 months with combined therapy. In the non-response group, median survival was 4.4 months with radiotherapy and 6.7 months with combined treatments. Severe acute complications (grade 3) occurred in 2 cases using radiotherapy, and in 7 cases using combined therapy. CONCLUSION: When the patients with stage IIIB non-small cell lung cancer received chemoradiotherapy, treatment response rate and overall survival was greater than with radiation alone.
Carcinoma, Non-Small-Cell Lung*
;
Chemoradiotherapy
;
Drug Therapy
;
Humans
;
Radiotherapy
;
Retrospective Studies
;
Survival Rate
;
Treatment Outcome*
9.Cytotoxic Effect of X-irradiation of Mouse Tumor Cells in the Presence of Korean Ginseng Extract.
Hyoung Cheol KWON ; Jin Ki KIM ; Jung Soo KIM ; Dong Seong CHOI
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2000;18(3):200-204
PURPOSE: We already reported the results that aqueous extract of Korean ginseng roots showed a marked cytotoxicity. In this study, we investigated whether combined ginseng product with X-irradiation increase the cytotoxicity of tumor cells than X-irradiation or not. MATERIALS AND METHODS: Fifty gram of Korean ginseng powder mixed with 1 L of distilled water was extracted with reflux flask under condition of 100 degrees C for 5 hrs. This aquaous ginseng extract was filtered, centrifuged and then was freezed under condition of -90degrees C for 16-18 hrs. The freezing extract was dried with freeze drier, and then diluted. X-irradiation was given to tumor cells by 6 MeV linear accelerator. The cytotoxicity of ginseng in vitro was evaluated from its ability to reduce the clonogenecity of fibrosarcoma (FSa II) cells. In X-irradiation alone group, each 2, 4, 6 and 8 Gy was given to tumor cells. In X-irradiation with ginseng group, 0.2 mg/mL of ginseng extract was exposed to tumor cells for 1 hour before X-irradiation. RESULTS: The yield for 50 g of ginseng extract which was treated with freezing drier was 3.13 g (6.3%). Cytotoxicity in vitro was measured as survival fraction which was judged from the curve, at ginseng concentration of 0.001, 0.01, 0.1 and 1 mg/mL were 0.89+/-0.04, 0.86+/-0.06, 0.73+/-0.01 and 0.09+/-0.02, respectively. Survival fraction at X-irradiation alone of 2, 4, 6 and 8 Gy were 0.81+/-0.07, 0.42+/-0.08, 0.15+/-0.02, 0.03+/-0.01, respectively. But, survival fraction in combined group of X-irradiation and ginseng (0.2mg/mL) at each same radiation dose were 0.28+/-0.01, 0.18+/-0.03, 0.08+/-0.02, 0.006+/-0.002, respectively ( p<0.05). CONCLUSION: The yield for ginseng extract which was treated with freezing drier was 6.3%. Cytotoxicity of Fsa II in combined ginseng with X-irradiation group was increased than that of X-irradition alone group, and its enhancing effect seemed to be added.
Animals
;
Fibrosarcoma
;
Freezing
;
Mice*
;
Panax*
;
Particle Accelerators
;
Water
10.The Radiation Effect on Peripheral Blood Cell.
Tae June LEE ; Hyoung Cheol KWON ; Jung Soo KIM ; Sun Kyun IM ; Ki Chul CHOI
Journal of the Korean Society for Therapeutic Radiology 1988;6(2):253-258
To evaluate radiation effect on the hematopoietic system, we analyzed 44 patients who were treated with conventionally fractionated radiation therapy (RT) at Chonbuk National University Hospital. According to the treatment sites, we classified them into three groups: group I as head and neck, group II as thorax, and group III as pelvis. White blood cell, lymphocyte, platelet and hemoglobin were checked before and during RT The results were as follow; 1. White blood cell (WBC) and lymphocyte count were declined from the first week of RT to the third week, and then slightly recovered after the third or fourth week. There was prominent decrease in lymphocyte counts than WBC. 2. Platelet counts were declined until the second week of the RT, showed slight recovery at fourth week in all groups. Hemoglobin values were slightly decreased in the first week and then recovered the level of pretreatment value, gradually. 3. Lymphocyte count were declined significantly on group III(p<0.01), WBC and platelet counts were decreased on group II but statistically not significant.
Blood Cells*
;
Blood Platelets
;
Head
;
Hematopoietic System
;
Humans
;
Jeollabuk-do
;
Leukocytes
;
Lymphocyte Count
;
Lymphocytes
;
Neck
;
Pelvis
;
Platelet Count
;
Radiation Effects*
;
Thorax