1.A Study of Hyperventilation Syndrome in Emergency Department.
Young Chul YOON ; Won Yul KIM ; Kyung Ho LEE ; Byeong Min JEON ; Kyung Hwan KIM ; Hong Yong KIM
Journal of the Korean Society of Emergency Medicine 1998;9(2):264-270
One hundred patients with hyperventilation syndrome presenting to emergency department(ED) were studied. Those were diagnosed on clinical basis by emergency medical physician. The male to female ratio was 15 : 85. In monthly distribution, the numbers of patients were increased during the two months, June and July. The 41% of patients visited the emergency center from 9:00 p.m. to 3:00 a.m.. The most common predisposing factors were the domestic problems, especially those between husband and wife(37%). Presenting complaints were dyspnea(34), paresthesia(30), muscle spasm(24), dizziness(6) and palpitation(6 patients). The initial examination of the patients in the ED were as follows, systolic blood pressure(134+/-7.15mmHg), heart rate(87.67+/-14.34/minute), respiratory rate(22.21+/-3.34/minute) and body temperature(36.61+/-0.31 degrees C, n=98). Arterial blood gas analysis showed alkalemia(pH 7.51+/-0.09) and hypocapnia(PCO2 26.67+/-8.30mmHg). After emergency cares, including carbone dioxide re-breathing and antianxietics, most of the symptoms were disappeared. The mean duration of stay in ED was 3.27+/-0.23 hours. The most important considerations in diagnosis of hyperventilation syndrome was the patients's history and the effective management was carbon dioxide rebreathing for a few minutes and antianxietics.
Blood Gas Analysis
;
Carbon
;
Carbon Dioxide
;
Causality
;
Diagnosis
;
Emergencies*
;
Emergency Service, Hospital*
;
Female
;
Heart
;
Humans
;
Hyperventilation*
;
Male
;
Spouses
2.Effects of Applying a Vibration Stimulation to Paretic Side and Non-Paretic Side on Balance and Gait in Stroke Patients: a Pilot Study
Ho Jin JEONG ; Sung Hwan PARK ; Jong Yun JEON ; Byeong Geun KIM
Journal of Korean Physical Therapy 2022;34(5):193-197
Purpose:
The purpose of this pilot study was to assess the feasibility of a proposed study “To investigate the effects of applying a vibration stimulation to the paretic and non-paretic sides on balance and gait in stroke patients” before proceeding with the main study.
Methods:
A total of 30 patients who had suffered a stroke and who met the selection criteria participated in this study. However, only 14 patients completed the study. The study subjects were randomly assigned to vibration stimulation on either both sides (B group) or the paralyzed side (P group). The interventions were applied for six weeks. The patients were assessed using the Berg balance scale (BBS), Timed up and go (TUG), 10-meter walk (10 MW), and 6-minute walk (6 MW) tests.
Results:
There was a significant difference before and after the application of vibration stimulation in the BBS, TUG, 10MW, and 6 MW tests in the B group (p < 0.05). Similarly, there was also a significant difference observed in the 10 MW and 6 MW tests in the P group (p < 0.05). The difference between the two groups was not significant in the BBS, TUG, 10 MW, and 6 MW tests (p > 0.05).
Conclusion
This pilot study suggests that it would be feasible to conduct a large-scale randomized controlled trial (RCT) to examine the effects of applying a vibration stimulation to the paretic and non-paretic sides, on the balance and gait in stroke patients.
3.Kallmann's Syndrome Associasted with Slipped Capital Femoral Epiphysis
Hyeon Jeong JEON ; Byeong Seong KO ; Do Hyeong KIM ; Jang Hwan BAE ; TGae Geun OH ; Seung Baek KANG
Journal of Korean Society of Endocrinology 1996;11(3):318-323
The Kallmanns syndrome is the most common form of isolated hypogonadotropic hypogonadism in which anosmia or hyposmia resulting from agenesis of hypoplasia of the olfactory lobes is associated with LHRH deficiency, This syndrome is genetically heterogeneous and can be trans-mitted as an X-linked, autosomal dominant or autosomal recessive trait. The hypogonadotropic hypogonadism results in absent or incomplete pubertal development and may be associated with anosmia or hyposmia, mid-line defect(color blindness, cleft-lip or
Blindness
;
Cryptorchidism
;
Epiphyses
;
Femur Neck
;
Gonadotropin-Releasing Hormone
;
Growth Plate
;
Head
;
Humans
;
Hypogonadism
;
Kallmann Syndrome
;
Male
;
Olfaction Disorders
;
Olfactory Cortex
;
Slipped Capital Femoral Epiphyses
4.Cryopreservation of Testicular Spermatozoa using Mouse Zona Pellucida in Intracytoplasmic Sperm Injection Program.
Tae Kwang SUH ; Byeong Gyun JEON ; Eun Kyung RYU ; Eun Sook LEE ; Zae Yoong RYOO ; Sea Hwan SOHN ; Jin Soo MOON ; Kwang Chull KIM
Korean Journal of Fertility and Sterility 1997;24(2):187-192
The survival rate and motility recovered after cryopreservation of testicular spermatozoa in testicular sperm extraction (TESE)-ICSl program is low. The purpose of this study was to assess the availability and efficiency of mouse empty zona pellucida in cryopreserving human TESE spermatozoa. Mouse empty zonae pellucidae were obtained by extraction of cytoplasm with or without cytochalasin B treatment. Motile sperm from proven-fertile donor and two azoospermic patients after TESE were individually inserted into empty zona pellucida and cryopreserved. Two to five days after cyropreservation, the frozen sperm were thawed and the rates of recovery and motility were observed. The ooplasmic extraction rates of control (N=80) and cytochalasin B treated oocytes (N=80) were 94.0% and 96.2%, respectively (p>0.05). The post-thaw recovery rates of spermatozoa and rates of motility recovery of ejaculate (N=70) and testicular (N=70) sperm were 97.1%, 97.1% and 95.7%, 94.3%, respectively (p>0.05). The results of this study showed that the mouse zone pellucida is useful for cryostorage of single testicular spermatozoa.
Animals
;
Cryopreservation*
;
Cytochalasin B
;
Cytoplasm
;
Herpes Zoster*
;
Humans
;
Mice*
;
Oocytes
;
Sperm Injections, Intracytoplasmic*
;
Spermatozoa*
;
Survival Rate
;
Tissue Donors
;
Zona Pellucida*
5.Treatment Margin Assessment using Mega-Voltage Computed Tomography of a Tomotherapy Unit in the Radiotherapy of a Liver Tumor.
Sei Hwan YOU ; Jinsil SEONG ; Ik Jae LEE ; Woong Sub KOOM ; Byeong Chul JEON
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2008;26(4):280-288
PURPOSE: To identify the inter-fractional shift pattern and to assess an adequate treatment margin in the radiotherapy of a liver tumor using mega-voltage computed tomography (MVCT) of a tomotherapy unit. MATERIALS AND METHODS: Twenty-six patients were treated for liver tumors by tomotherapy from April 2006 to August 2007. The MVCT images of each patient were analyzed from the 1st to the 10th fraction for the assessment of the daily liver shift by four groups based on Couinard's proposal. Daily setup errors were corrected by bony landmarks as a prerequisite. Subsequently, the anterior-, posterior-, right-, and left shifts of the liver edges were measured by maximum linear discrepancies between the kilo-voltage computed tomography (KVCT) image and MVCT image. All data were set in the 2-dimensional right angle coordinate system of the transverse section of each patient's body. RESULTS: The liver boundary shift had different patterns for each group. In group II (segment 2, 3, and 4), the anterior mean shift was 2.80+/-1.73 mm outwards, while the left mean shift was 2.23+/-1.37 mm inwards. In group IV (segment 7 and 8), the anterior-, posterior-, right-, and left mean shifts were 0.15+/-3.93 mm inwards, 3.15+/-6.58 mm inwards, 0.60+/-3.58 mm inwards, and 4.50+/-5.35 mm inwards, respectively. The reduced volume in group II after MVCT reassessment might be a consequence of stomach toxicity. CONCLUSION: Inter-fractional liver shifts of each group based on Couinard's proposal were somewhat systematic despite certain variations observed in each patient. The geometrical deformation of the liver by respiratory movement can cause shrinkage in the left margins of liver. We recommend a more sophisticated approach in free-breathing mode when irradiating the left lobe of liver in order to avoid stomach toxicity.
6.NADPH oxidase activation contributes to native low-density lipoprotein-induced proliferation of human aortic smooth muscle cells.
Il Hwan PARK ; Hye Mi HWANG ; Byeong Hwa JEON ; Hyung Joo KWON ; Kwang Lae HOE ; Young Myeong KIM ; Sungwoo RYOO
Experimental & Molecular Medicine 2015;47(6):e168-
Elevated plasma concentration of native low-density lipoprotein (nLDL) is associated with vascular smooth muscle cell (VSMC) activation and cardiovascular disease. We investigated the mechanisms of superoxide generation and its contribution to pathophysiological cell proliferation in response to nLDL stimulation. Lucigenin-induced chemiluminescence was used to measure nLDL-induced superoxide production in human aortic smooth muscle cells (hAoSMCs). Superoxide production was increased by nicotinamide adenine dinucleotide phosphate (NADPH) and decreased by NADPH oxidase inhibitors in nLDL-stimulated hAoSMC and hAoSMC homogenates, as well as in prepared membrane fractions. Extracellular signal-regulated kinase 1/2 (Erk1/2), protein kinase C-theta (PKCtheta) and protein kinase C-beta (PKCbeta) were phosphorylated and maximally activated within 3 min of nLDL stimulation. Phosphorylated Erk1/2 mitogen-activated protein kinase, PKCtheta and PKCbeta stimulated interactions between p47phox and p22phox; these interactions were prevented by MEK and PKC inhibitors (PD98059 and calphostin C, respectively). These inhibitors decreased nLDL-dependent superoxide production and blocked translocation of p47phox to the membrane, as shown by epifluorescence imaging and cellular fractionation experiments. Proliferation assays showed that a small interfering RNA against p47phox, as well as superoxide scavenger and NADPH oxidase inhibitors, blocked nLDL-induced hAoSMC proliferation. The nLDL stimulation in deendothelialized aortic rings from C57BL/6J mice increased dihydroethidine fluorescence and induced p47phox translocation that was blocked by PD98059 or calphostin C. Isolated aortic SMCs from p47phox-/- mice (mAoSMCs) did not respond to nLDL stimulation. Furthermore, NADPH oxidase 1 (Nox1) was responsible for superoxide generation and cell proliferation in nLDL-stimulated hAoSMCs. These data demonstrated that NADPH oxidase activation contributed to cell proliferation in nLDL-stimulated hAoSMCs.
Animals
;
Aorta/*cytology
;
Cell Line
;
Cell Proliferation
;
Cells, Cultured
;
Humans
;
Lipoproteins, LDL/*metabolism
;
Mice, Inbred C57BL
;
Mitogen-Activated Protein Kinases/metabolism
;
Muscle, Smooth, Vascular/cytology
;
Myocytes, Smooth Muscle/*cytology
;
NADPH Oxidase/*metabolism
;
Phosphorylation
;
Protein Kinase C/metabolism
;
Signal Transduction
;
Superoxides/metabolism
7.Diagnostic Value of Dynamic Perfusion MR Imaging in Benign and Malignant Musculoskeletal Lesions.
Byeong Kyoo CHOI ; Sang Hoon LEE ; Ji Hyeon CHA ; Sung Moon KIM ; Myung Jin SHIN ; Heon HAN ; Sam Soo KIM ; Ji Yeon LEE ; Yong Hwan JEON
Journal of the Korean Radiological Society 2008;58(3):313-320
PURPOSE: To assess the diagnostic value of dynamic perfusion MR imaging for differentiation between benign and malignant musculoskeletal lesions. MATERIALS AND METHODS: Dynamic perfusion MR imaging was performed using a 3.0 T system in 32 female and 30 male patients (aged 10-90 years, mean age, 43 years). Following the assessment of the precontrast imaging, a dynamic study was performed. This dynamic technique allowed for 638 images to be obtained at 11 levels throughout the lesion. Twenty-eight lesions originated within bone (8 benign, 20 malignant), whereas 34 lesions were of soft tissue origin (22 benign, 12 malignant). The final diagnosis was histopathologically confirmed in all patients. To differentiate between benign and malignant lesions, we analyzed the four parameters: (maximal relative enhancement (MRE), time to peak (TTP), wash in rate (WI), steepest slope (SS) and the distribution of time intensity curve (TIC) patterns. RESULTS: The TTP, WI, and SS values of malignant lesions were statistically significant from those of benign lesions (p < 0.05). However, the difference for the MRE values was not statistically significant. The distribution of TIC patterns was a helpful indicator of benign or malignant state, however the difference between the two states was not significant. CONCLUSION: Dynamic perfusion MR imaging is a helpful tool in differentiating benign and malignant musculoskeletal lesions.
Bone Neoplasms
;
Female
;
Humans
;
Male
;
Musculoskeletal Diseases
;
Perfusion
;
Soft Tissue Neoplasms
;
Thymine Nucleotides
;
Tics
8.Non-Adherence to Psychiatric Intervention in Work Related Burns.
Sang Bae JEON ; Chang Hwan HAN ; Byeong Kil YEON ; Seong Gon RYU ; Sun Ja KIM ; Mi Ja PARK ; Wook CHUN ; Jun HUR ; Dohern KIM ; Boung Chul LEE
Journal of Korean Burn Society 2013;16(1):24-29
PURPOSE: Patients with work related burns suffer from anxiety, depression, insomnia and suicide ideation etc. Psychiatric symptoms could be reduced by treatment. Almost all patients are referred to psychiatric intervention in our hospital. However, a number of patients show non-adherence. The aim of this study is to figure out the reason of non-adherence and psychiatric symptoms of work related burns patients. METHODS: 123 patients participated in this study. Startle, Physiological arousal, Anger, and Numbness (SPAN), Feeling Suicide, Patient Health Questionnaire-2 (PHQ-2) were administered as screening tool. Questions about psychiatric intervention and reasons to refuse psychiatric intervention were asked. RESULTS: 32% patients were depressed, 34% patients had suicide ideation and 59% had PTSD after work related burns. However, 46% of burn patients had not been treated. Stigma of psychiatric intervention and concerns about dependency were major reasons for non-adherence. CONCLUSION: There are gap between necessity and reality of psychiatric intervention on work related burn patients.
Anger
;
Anxiety
;
Arousal
;
Burns
;
Dependency (Psychology)
;
Depression
;
Humans
;
Hypesthesia
;
Mass Screening
;
Occupational Injuries
;
Referral and Consultation
;
Sleep Initiation and Maintenance Disorders
;
Stress Disorders, Post-Traumatic
;
Suicide
9.Clinical Usefulness of 24-hour Ambulatory Blood Pressure Monitoring in Hypertensive Pregnancy.
Hyeon Jeong JEON ; Byeong Seong KO ; Nam Ju KAWK ; Do Hyeong KIM ; Jang Hwan BAE ; Dong Woon KIM ; Gi Byoung NAM ; Myeong Chan CHO ; Eun Hawn JEONG
Korean Journal of Medicine 1998;55(1):59-68
OBJECTIVES: In the third trimester hypertensive pregnancies, we would like to evaluate effects of white coat hypertension, severity of hypertension and diurnal variation of blood pressure on the fetal outcome by using 24- hour ambulatory blood pressure monitoring. METHODS: Hypertensives(n=50) and normotensives (n=14) in the third trimester of the pregnancy underwent 24-hour ambulatory blood pressure monitoring. We excluded hypertensives(n=5) who became pre-eclampsia patients. Hypertensives(n=45) were classified as white coat hypertensives(n=14, mean ambulatory blood pressure <139/87mmHg) and sustained hypertensives(n=31). Sustained hypertensives(n=31) were divided as moderate to severe hypertensives(n=5, systolic blood pressure >160 mmHg or diastolic blood pressure >100mmHg) and mild hypertensives(n=26). Sustained hypertensives were also divided into two groups which had diurnal variation of blood pressure or not. To exclude effects of hypertension severity, effects of diurnal variation were evaluated in hypertensives with similar mean arterial blood pressure. Gestational age, body weight, body weight for gestational age were used as parameters of the fetal outcome. RESULTS: 1) The prevalence of white coat hypertension was 28%(14/50). 2) There were no significant differences in the fetal outcome between normotensives(n=14) and white coat hypertensives(n=14). 3) Body weight of fetus and body weight for gestational age in moderate to severe hypertensives(n=5) were less than those of mild hypertensives(n=26), but gestational age was not significantly different between two groups. 4) Body weight of fetus and body weight for gestational age in sustained hypertensives without diurnal variation(n=10) were less than those with diurnal variation(n=8), but gestational age was not significantly different between two groups. 5) All hypertensives who became pre-eclampsia (n=5) were severe hypertensives and had no diurnal variation of blood pressure. CONCLUSION: White coat hypertension in the third trimester was quite often and did not affect on the fetal outcome. The more severe hypertension and/or absence of diurnal variation of blood pressure caused poor fetal outcome. Patients who became pre-eclampsia were severe hypertensives and had no diurnal variation of blood pressure. Ambulatory blood pressure monitoring may have several roles in the antenatal management of hypertenison.
Arterial Pressure
;
Blood Pressure
;
Blood Pressure Monitoring, Ambulatory*
;
Body Weight
;
Female
;
Fetus
;
Gestational Age
;
Humans
;
Hypertension
;
Pre-Eclampsia
;
Pregnancy Trimester, Third
;
Pregnancy*
;
Prevalence
;
White Coat Hypertension
10.Analysis on Bilateral Hindlimb Mapping in Motor Cortex of the Rat by an Intracortical Microstimulation Method.
Han Yu SEONG ; Ji Young CHO ; Byeong Sam CHOI ; Joong Kee MIN ; Yong Hwan KIM ; Sung Woo ROH ; Jeong Hoon KIM ; Sang Ryong JEON
Journal of Korean Medical Science 2014;29(4):587-592
Intracortical microstimulation (ICMS) is a technique that was developed to derive movement representation of the motor cortex. Although rats are now commonly used in motor mapping studies, the precise characteristics of rat motor map, including symmetry and consistency across animals, and the possibility of repeated stimulation have not yet been established. We performed bilateral hindlimb mapping of motor cortex in six Sprague-Dawley rats using ICMS. ICMS was applied to the left and the right cerebral hemisphere at 0.3 mm intervals vertically and horizontally from the bregma, and any movement of the hindlimbs was noted. The majority (80%+/-11%) of responses were not restricted to a single joint, which occurred simultaneously at two or three hindlimb joints. The size and shape of hindlimb motor cortex was variable among rats, but existed on the convex side of the cerebral hemisphere in all rats. The results did not show symmetry according to specific joints in each rats. Conclusively, the hindlimb representation in the rat motor cortex was conveniently mapped using ICMS, but the characteristics and inter-individual variability suggest that precise individual mapping is needed to clarify motor distribution in rats.
Animals
;
*Brain Mapping
;
Electric Stimulation
;
Electrodes
;
Hindlimb/*physiology
;
Male
;
Motor Cortex/*physiology
;
Rats
;
Rats, Sprague-Dawley