1.Impact of increasing the level of copayments on the number of physician visits.
Korean Journal of Preventive Medicine 1992;25(1):73-87
The level of copayment increased in order to stabilize the financial condition of the health insurance on 1986. An important question regarding the policy was whether the increase in the level of copayments reduced the utilization of medical services in the poor selectively. In spite of the importance of the research question, no study has been reported. This study was designed to find out changes in nuniU rs of physician visits, to explain charac teristics influencing the difference of utilization before and after the program. Finally the interaction effect between the program and the level of income was examined for the abover question. A total of 10,421 persons from eight institutions was selected as the study sample. Research findings are as follows. 1. The number of physician visits decreased by ten percent as a result of increasing the level of copayment. 2. The decrease was remarkable in some groups such as children, rural area and large family. 3. The most important factor which explained the difference was the number of physician visits before the introduction of the new program.. The more numbers of physian visits during the last year were, the more numbers of physian visits decreased after the program. 4. The interaction term between the program and the level of income was statistically significant in the multiple regression model which explained physician visits and its coefficient was negative. It means that an increase in copayment did not reduced the number of physician visits in the poor, selectively. 5. It can be concluded that imposing adequate copayment reduces the use of medical services as well as medical costs without serious damage in access especially for the poor pule.
Child
;
Humans
;
Insurance, Health
2.Down-regulation of Dopamine D1 Receptor in Rat Penile Tissue after Cavernous Neurotomy.
Jae Seog HYUN ; Hang Ki JUNG ; Jong Yoon BAHK
Korean Journal of Urology 2003;44(8):805-811
PURPOSE: Dopamine plays a critical role in promoting sexual drive and penile erection through dopamine receptors. This study was performed to investigate whether the cavernousal nerve controls the expression of peripheral dopamine D1 receptors in rat penile tissues after cavernousal nerve injury. MATERIALS AND METHODS: Male rats (n=20) were divided into two groups: a control group consisting of sham-operated rats (n=10) and an experimental group consisting of rats that underwent incision of the bilateral cavernous nerve (n=10). Three months later, the intracavernous pressure response was monitored using an intracavernous papaverine injection of 300 microgram. The expression of dopamine D1 receptor mRNA were studied using an RT-PCR method, and dopamine D1 receptor protein expression by Western blot analysis and immuno-histochemical staining in each group. The expressed band density of the RT-PCR and Western blot were measured by a densitometer. RESULTS: Erectile functions, as studied by intracavernosal papaverine injection at three months, were similar in both groups. The dopamine D1 receptor mRNA and protein expressions were significantly lower in the neurotomy group. The immuno-histochemical staining also showed a reduction in the dopamine D1 receptor expression in the neurotomy group compared with the control group. CONCLUSIONS: Our results show that dopamine D1 receptors in penile tissues were down-regulated following cavernousal nerve injury. These findings suggest that cavernousal nerve injury affects directly the reduction of dopamine D1 receptor expression, and that the action of dopamine on the cavernousal dopamine receptor will be affected in cavernousal nerve injured rats.
Animals
;
Blotting, Western
;
Dopamine*
;
Down-Regulation*
;
Humans
;
Male
;
Papaverine
;
Penile Erection
;
Penis
;
Rats*
;
Receptors, Dopamine
;
Receptors, Dopamine D1*
;
RNA, Messenger
;
Wounds and Injuries
3.Schwannoma Originated from Obturator Nerve of Pelvic Cavity in Patient with Urinary Frequency.
Jae Hun JUNG ; Hang Ki JUNG ; Sung Cheol KAM ; See Min CHOI ; Jae Seok HYUN ; Ky Hyun JUNG ; Jeong Seok HWA
Korean Journal of Urology 2005;46(9):992-994
A Schwannoma is a tumor originating from the neural sheath of Schwann cells, and is also known as a neurilemmoma, neurinoma or fibroblastoma. It can be either a benign or malignant tumor arising from the associated nerve sheath. Here, a case of a Schwannoma, originated from the obturator nerve of the pelvic cavity, in a patient with urinary frequency is reported, with a brief review of the literature.
Humans
;
Neurilemmoma*
;
Obturator Nerve*
;
Pelvis
;
Schwann Cells
4.Localized Uterine Recurrence of Hepatocellular Carcinoma 4 Years after Curative Resection.
Sang Jin LEE ; Jung Woo SHIN ; Neung Hwa PARK ; Yang Won NAH ; Hang Jo YOO ; Yoong Ki JUNG ; Hye Jeong CHOI
Korean Journal of Medicine 2012;82(5):603-608
Extrahepatic metastasis of hepatocellular carcinoma (HCC) can be found in various organs, but metastasis to the female genital tract is extremely rare. A 48-year-old woman who had undergone curative left lobectomy for small HCC 4 years earlier was admitted because of sequential alpha-fetoprotein elevation. Upon abdominal MRI and hepatic angiography, no evidence of HCC recurrence was found in the remnant liver. However, a positron emission tomography CT scan showed a hypermetabolic lesion in the uterine fundus, which was revealed as metastatic HCC after total hysterectomy. This is, to our knowledge, the first documented case of metastatic uterine tumor that originated from HCC without intrahepatic recurrence.
alpha-Fetoproteins
;
Angiography
;
Carcinoma, Hepatocellular
;
Female
;
Humans
;
Hysterectomy
;
Liver
;
Middle Aged
;
Neoplasm Metastasis
;
Positron-Emission Tomography
;
Recurrence
;
Uterine Neoplasms
5.Change of Expression and Activity of Heme Oxygenase-1 in Rat Corpus Cavernosum during Low-flow Priapism.
Woo Jin KIM ; Hang Ki JUNG ; Jae Hun JUNG ; Sung Chul KAM ; Jeong Seok HWA ; Jae Seog HYUN
Korean Journal of Andrology 2004;22(2):81-86
PURPOSE: The inducible isoform of heme oxygenase(HO), HO-1, responds to hypoxia. HO-1 regulates vascular smooth muscle tone through carbon monoxide production. To investigate the possible role of HO-1 in low-flow priapism, we examined the expression and activity of HO-1 in artificially induced veno-occlusive priapism in rat. MATERIALS AND METHODS: Fourteen male Sprague Dawley rats were divided into 2 groups with 7 rats each. In the first group, low-flow priapism was induced using a vacuum-constriction device and a constriction rubber band; in the second group, low-flow priapism was induced using papaverine. We measured the expression level and activity of HO-1 in penile tissues after time periods of 0(control), 2, 3, 4, 8, 12, 24, and 48 hours. At the same time, the expression levels of i-NOS, e-NOS, and beta-actin(control) in penile tissues were also measured. RESULTS: In both groups, expression of HO-1 and HO-1 enzyme activities in penile tissue significantly increased in a time dependent fashion(p<0.01). However, there was no difference in the expression of i-NOS and e-NOS in both groups at any time period. CONCLUSIONS: HO-1 was induced over time in rats with artificially induced veno-occlusive priapism. Induction of HO-1 may play a protective role against hypoxic injury, but may also play an important role in the vicious cycle observed for low flow priapism. Increasing induction of HO-1 against hypoxic injury in a prolonged erectile state promotes sustained dilatation of corporal smooth muscle, and this may aggravate low-flow priapism.
Animals
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Anoxia
;
Carbon Monoxide
;
Constriction
;
Dilatation
;
Heme Oxygenase (Decyclizing)
;
Heme Oxygenase-1*
;
Heme*
;
Humans
;
Male
;
Muscle, Smooth
;
Muscle, Smooth, Vascular
;
Papaverine
;
Priapism*
;
Rats*
;
Rats, Sprague-Dawley
;
Rubber
6.Localized Uterine Recurrence of Hepatocellular Carcinoma 4 Years after Curative Resection
Sang Jin LEE ; Jung Woo SHIN ; Neung Hwa PARK ; Yang Won NAH ; Hang Jo YOO ; Yoong Ki JUNG ; Hye Jeong CHOI
Korean Journal of Medicine 2012;82(5):603-608
Extrahepatic metastasis of hepatocellular carcinoma (HCC) can be found in various organs, but metastasis to the female genital tract is extremely rare. A 48-year-old woman who had undergone curative left lobectomy for small HCC 4 years earlier was admitted because of sequential alpha-fetoprotein elevation. Upon abdominal MRI and hepatic angiography, no evidence of HCC recurrence was found in the remnant liver. However, a positron emission tomography CT scan showed a hypermetabolic lesion in the uterine fundus, which was revealed as metastatic HCC after total hysterectomy. This is, to our knowledge, the first documented case of metastatic uterine tumor that originated from HCC without intrahepatic recurrence.
alpha-Fetoproteins
;
Angiography
;
Carcinoma, Hepatocellular
;
Female
;
Humans
;
Hysterectomy
;
Liver
;
Middle Aged
;
Neoplasm Metastasis
;
Positron-Emission Tomography
;
Recurrence
;
Uterine Neoplasms
7.The role of combined induction chemotherapy and radical radiation therapy in the treatment of advanced nasopharyngeal cancer.
Jin Hyuk CHOI ; Jae Kyung ROH ; Ho Young LIM ; Hyun Chul JUNG ; Nae Choon YOO ; Shin Ki AHN ; Eun Hee KOH ; Joo Hang KIM ; Chang Ok SEO ; Kwi Un KIM ; Joon Kyoo ROH ; Byung Soo KIM
Journal of the Korean Cancer Association 1993;25(3):403-416
No abstract available.
Induction Chemotherapy*
;
Nasopharyngeal Neoplasms*
8.A Total Intravenous Anesthetic Experience of Pediatric Living Related Liver Transplantation with Propofol: A case report.
Dong Gun LIM ; Ki Su BYUN ; Geun Bo LEE ; Woon Yi BAEK ; Jung Gil HANG ; Jin Woong PARK ; Byung Kwon KIM
Korean Journal of Anesthesiology 1999;36(2):354-359
We have experienced one case of anesthesia for living related liver transplantation with propofol. The recipient was 18-month-old girl and 10.5 kg. She was suffered from congenital liver disease (biliary atresia). We decided propofol as an anesthetic agent of the recipient with permission of the recipient's parents. Total anesthetic time was about 13 hours and anhepatic phase was 110 min. Careful attention was paid to prevent infection, hypothermia, hepatic artery thrombosis and to keep proper lung function. Hemodynamic changes were relatively stable throughout the operation and postoperative mechanical ventilatory support was required for about 2 days.
Anesthesia
;
Female
;
Hemodynamics
;
Hepatic Artery
;
Humans
;
Hypothermia
;
Infant
;
Liver Diseases
;
Liver Transplantation*
;
Liver*
;
Lung
;
Parents
;
Propofol*
;
Thrombosis
9.A Total Intravenous Anesthetic Experience of Pediatric Living Related Liver Transplantation with Propofol: A case report.
Dong Gun LIM ; Ki Su BYUN ; Geun Bo LEE ; Woon Yi BAEK ; Jung Gil HANG ; Jin Woong PARK ; Byung Kwon KIM
Korean Journal of Anesthesiology 1999;36(2):354-359
We have experienced one case of anesthesia for living related liver transplantation with propofol. The recipient was 18-month-old girl and 10.5 kg. She was suffered from congenital liver disease (biliary atresia). We decided propofol as an anesthetic agent of the recipient with permission of the recipient's parents. Total anesthetic time was about 13 hours and anhepatic phase was 110 min. Careful attention was paid to prevent infection, hypothermia, hepatic artery thrombosis and to keep proper lung function. Hemodynamic changes were relatively stable throughout the operation and postoperative mechanical ventilatory support was required for about 2 days.
Anesthesia
;
Female
;
Hemodynamics
;
Hepatic Artery
;
Humans
;
Hypothermia
;
Infant
;
Liver Diseases
;
Liver Transplantation*
;
Liver*
;
Lung
;
Parents
;
Propofol*
;
Thrombosis
10.Intradural Extramedullary Epidermoid Cyst: A Case Report.
Kwang Hwan JUNG ; Sung Do CHO ; Sang Hun KO ; Chae Chil LEE ; Yun Suck YEOM ; Sang Woo KIM ; Hang Ki KANG ; Jae Ryong CHA
Journal of Korean Society of Spine Surgery 2015;22(1):26-30
STUDY DESIGN: A case report. OBJECTIVES: To report a rare case of epidermoid cyst in the spinal canal. SUMMARY OF LITERATURE REVIEW: Epidermoid cyst in the spinal canal is rare. Idiopathic epidermoid cyst in the spinal canal not associated with a trauma or infection is even rarer. MATERIAL AND METHODS: A 73 year-old female presented with a 1 year history of progressive paresthesia and motor weakness of both lower extremeties. MRI showed a cystic mass on the 7th thoracic canal. We performed total laminectomy at the T6-T8 level. The cystic mass was excised after durotomy using a posterior approach. RESULTS: We confirmed the presence of an epidermoid cyst for histopathology. CONCLUSION: Idiopathic epidermoid cyst in the spine is very rare and requires accurate differential diagnosis. Preoperative MRI scans are necessary to differentiatie epidermoid cysts from other intradural masses. Confirmative diagnosis can be done by histopatholoty.
Diagnosis
;
Diagnosis, Differential
;
Epidermal Cyst*
;
Female
;
Humans
;
Laminectomy
;
Magnetic Resonance Imaging
;
Paresthesia
;
Spinal Canal
;
Spine