1.The Change of Heart Rate Variability in Anxiety Disorder after Given Physical or Psychological Stress.
Min Kyung CHO ; Doo Heum PARK ; Jaehak YU ; Seung Ho RYU ; Ji Hyeon HA
Sleep Medicine and Psychophysiology 2014;21(2):69-73
OBJECTIVES: This study was designed to assess the change of heart rate variability (HRV) at resting, upright, and psychological stress in anxiety disorder patients. METHODS: HRV was measured at resting, upright, and psychological stress states in 60 anxiety disorder patients. We used visual analogue scale (VAS) score to assess tension and stress severity. Beck depression inventory (BDI) and state trait anxiety inventories I and II (STAI-I and II) were used to assess depression and anxiety severity. Differences between HRV indices were evaluated using paired t-tests. Gender difference analysis was accomplished with ANCOVA. RESULTS: SDNN (Standard deviation of normal RR intervals) and low frequency/high frequency (LF/HF) were significantly increased, while NN50, pNN50, and normalized HF (nHF) were significantly decreased in the upright position compared to resting state (p < 0.01). SDNN, root mean square of the differences of successive normal to normal intervals, and LF/HF were significantly increased, while nHF was significantly decreased in the psychological stress state compared to resting state (p < 0.01). SDNN, NN50, pNN50 were significantly lower in upright position compared to psychological stress and nVLF, nLF, nHF, and LF/HF showed no significant differences between them. CONCLUSION: The LF/HF ratio was significantly increased after both physical and psychological stress in anxiety disorder, but did not show a significant difference between these two stresses. Significant differences of SDNN, NN50, and pNN50 without any differences of nVLF, nLF, nHF, and LF/HF between two stresses might suggest that frequency domain analysis is more specific than time domain analysis.
Anxiety
;
Anxiety Disorders*
;
Autonomic Nervous System
;
Depression
;
Equipment and Supplies
;
Heart Rate*
;
Humans
;
Stress, Psychological*
2.Analysis of postpneumonectomy complications.
Gang Bae HUH ; Sung Rae CHO ; Su Hyeon KIM ; Hyeon Cheol HA ; Sung Dal PARK ; Jae Sung LEE ; Song Myung KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(8):613-619
No abstract available.
3.Surgical evaluation of diaphragmatic hernia.
Gang Bae HUH ; Hyeon Cheol HA ; Chang Su KIM ; Jae Sung LEE ; Sung Rae CHO ; Song Myung KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(2):96-101
No abstract available.
Hernia, Diaphragmatic*
4.Antihypertensive effect of perindopril in patients with essential hypertension.
Hyeon Geun CHO ; Duk Hee KANG ; Heung Soo KIM ; Seong Kyu HA ; Ho Yung LEE ; Dae Suk HAN
Korean Journal of Nephrology 1993;12(1):76-83
No abstract available.
Humans
;
Hypertension*
;
Perindopril*
5.Treatment with intravenous immunoglobulin in a case of adult onset Still's disease.
Sun Sin KIM ; Hae Sim PARK ; Dong Ho NAM ; Soo Keol LEE ; Jae Woong CHO ; Hyeon Kyeong CHO ; Chang Young HA
Journal of Asthma, Allergy and Clinical Immunology 1999;19(6):985-990
Adult onset Stills Disease (AOSD) is a systemic inflammatory disease characterized by spiking high fevers, arthritis, and an evanescent rash. Although many patients respond to nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroid, some patients fail to do so or are found to be resistant and require high doses of corticosteroid which induce severe side effects. Recently, treatment with intravenous immunoglobulin (IVIG) has been reported to be effective in patients with AOSD who were refractory to NSAIDs. Here, we report a case of AOSD treated with IVIG with a review of the literature.
Adult*
;
Anti-Inflammatory Agents, Non-Steroidal
;
Arthritis
;
Exanthema
;
Fever
;
Humans
;
Immunoglobulins*
;
Immunoglobulins, Intravenous
;
Still's Disease, Adult-Onset*
6.Assessment of Environmental Monitoring Items for Mixed Organic Solvents in Work Place.
Soo Hun CHO ; Ho Jang KWON ; Mi Na HA ; Sang Hwan HAN ; Yong Hyeon YIM ; Sung Tae OH
Korean Journal of Occupational and Environmental Medicine 1994;6(2):259-269
Ambient air monitoring(environmental monitoring) and biological monitoring of mixed organic solvents exposure have been used in exposure assessment of these compounds in the work environment. Environmental monitoring is more useful when assessing low level exposure to these compounds. The specific objectives of this study were to measure air organic solvent levels in the work environment, to test the agreement of items measured in this study with items which have been reported to the administrative agency, and finally to evaluate the appropriateness of environmental monitoring items. The study subjects were 13 small companies in which less than 300 employees were working and presumably exposed to mixed organic solvents(e.g. automotive repair and painting, 6; textile dyeing, 2; printing, 2; electronics, etc, 3). Personal air samplings were performed by the flow-lite sampling pump(MSA) and the 600mg charcoal tube with air velocity of 100ml/min for qualitative analysis and 2l/min for quantitative analysis. Samples were analysed by gas chromatography/mass spectrometry(Hewlett-Packard 5890/5970). High levels of toluene, n-hexane, and MIBK were detected in most study companies and low levels of ethylbenzene, xylene, n-butylacetate were also detected. When these measured items were compared with those of reported items, only 6 of 13 companies showed relatively good agreement between them. Two companies failed to report items exceeding the limit value. In conclusion, qualitative analysis of ambient air organic solvents seemed to be as important as quantitative analysis of these compounds and a periodic evaluation of monitoring items reported to the administrative agency should be required.
Charcoal
;
Environmental Monitoring*
;
Humans
;
Mass Spectrometry
;
Paint
;
Paintings
;
Solvents*
;
Textiles
;
Toluene
;
Workplace*
;
Xylenes
7.Sex- and Age-Related Changes in Connexin 43 Expression in Normal Rat Bladder.
Sung Ho SONG ; Hyun Taek JOO ; Hyeon Wook CHO ; Ha Wook HWANG ; Ki Ho LEE ; Dae Kyung KIM
International Neurourology Journal 2011;15(1):25-28
PURPOSE: Gap junctions are intercellular channels to facilitate electrical and metabolic communication between adjacent cells. Connexin 43 is the most predominant type of connexin expressed on rat detrusor muscle cells. We investigated the connexin 43 expressions in various age groups of either sex in normal rats. METHODS: Eighty Sprague-Dawley rats were used for analysis. Each group was quantified by 8 rats at 1 week, 2 weeks, 1 month, 3 months, and 6 months of age in either sex. In each animal, bladder was removed without any kind of intervention and fresh-frozen in liquid nitrogen. Total RNA extraction was done with easy-BLUE total RNA extraction kit. Reverse transcription polymerase chain reaction was done for connexin 43 and glyceraldehyde-3-phosphate dehydrogenase as an internal control using ImProm-II Reverse Transcription System. RESULTS: In female rats, no age-related change was detected in connexin 43 expressions. In male rats, connexin expression at 3 months of age showed significant decrease compared with 1 week, 2 weeks, and 6 months of age (P<0.05). When connexin expression at the same age in male and female were compared, only 3 months group in male showed significant decrease than the same age group in female. CONCLUSIONS: Our data suggest that the expressions of connexin 43 mRNA in normal detrusor muscle cell showed age-related changes especially in male rats. Although it is difficult to interpret these findings at this stage, age should be considered as a possible compounding factor affecting connexin 43 expressions in male rats.
Animals
;
Connexin 43
;
Female
;
Gap Junctions
;
Humans
;
Male
;
Muscle Cells
;
Nitrogen
;
Oxidoreductases
;
Polymerase Chain Reaction
;
Rats
;
Rats, Sprague-Dawley
;
Reverse Transcription
;
RNA
;
RNA, Messenger
;
Urinary Bladder
8.Large Brunner's gland hamartoma with annular stricture causing gastric outlet obstruction.
In Tae HWANG ; Young Bum CHO ; Dong Eun PARK ; Keum Ha CHOI ; Tae Hyeon KIM
The Korean Journal of Internal Medicine 2016;31(2):392-395
No abstract available.
Adult
;
Biopsy
;
*Brunner Glands/pathology/surgery
;
Duodenal Diseases/*complications/diagnosis/surgery
;
Duodenal Obstruction/diagnosis/*etiology/surgery
;
Duodenoscopy
;
Gastric Outlet Obstruction/diagnosis/*etiology/surgery
;
Hamartoma/*complications/diagnosis/surgery
;
Humans
;
Male
;
Tomography, X-Ray Computed
;
Treatment Outcome
9.Hemodynamic Infarction Associated with Coil Embolization of Intracranial Aneurysm.
Sang Won HWANG ; Yoon HA ; Seung Hwan YOON ; Young Kook CHO ; Eun Young KIM ; Hyung Chun PARK ; Hyeon Seon PARK
Korean Journal of Cerebrovascular Surgery 2003;5(1):58-62
We report a case of borderzone infarction which was developed after the coil embolization of unruptured internal carotid-posterior communicating artery aneurysm. Post-procedural angiography and brain computerized tomographic scan did not reveal any abnormality. However, brain magnetic resonance image (MRI) showed a wedge-shaped borderzone cerebral infarction between left middle cerebral artery and left anterior cerebral artery territory. It was suspected to be a manifestation of hypoperfusion in the internal carotid artery territory, caused by hemodynamic instability during the procedure. In order to prevent this unexpected serious complication, using the continuous hemodynamic monitoring during aneurysmal coil embolization, such as transcranial doppler ultrasonography, should be considered.
Aneurysm
;
Angiography
;
Anterior Cerebral Artery
;
Arteries
;
Brain
;
Carotid Artery, Internal
;
Cerebral Infarction
;
Embolization, Therapeutic*
;
Hemodynamics*
;
Infarction*
;
Intracranial Aneurysm*
;
Middle Cerebral Artery
;
Ultrasonography, Doppler, Transcranial
10.Validation of New Derivatization Procedure for the Determination of Hippuric Acid in Urine Using Gas Chromatography.
Soo Hun CHO ; Yong Hyeon YIM ; Sun Min KIM ; Ho Jang KWON ; Mi na HA ; Sang Hwan HAN
Korean Journal of Occupational and Environmental Medicine 1995;7(1):58-62
Urinary hippuric acid was analyzed by gas chromatography/mass spectrometry method. A simple and economical derivatization procedure using excessive methanol in acidic condition was adopted to esterify hippuric acid. Quantitative analysis was performed with two internal standards, heptadecanoic acid and hydrocinnamic acid, to evaluate the derivatization procedure as an analytical method. Using the standard addition method, linear and reproducible calibration curves were obtained for both internal standards. Calibration experiment showed that good quantitative result could also be obtained with the calibration curve obtained without urine matrix. Recovery rates for the urine samples were in the range of 95.6~111.4%. Using hydrocinnamic acid as internal standard, analysis time could be reduced.
Calibration
;
Chromatography, Gas*
;
Methanol
;
Spectrum Analysis