1.Clinical Observation of Cerebrovascular Accidents.
Sang Jun SHIM ; Tae Ho KIM ; Sin Whan CHOI ; Young Jun JANG ; Ho Jun RYOO ; Eung Tek KANG ; Wang Seong RYU ; Un Ho RYOO
Korean Circulation Journal 1989;19(3):429-440
Clinical observarions were done on 616 cases of cerebrovasculae accidents treated as inpatients at the Sung-Sim hospital, Chung-Ang university over a period of 8 years, from January, 1981 to Agust, 1988. The results were as follows; 1) Of 616 cases of cerebrovascular accidents, cerebral hemorrhage was presented in 56.82%, cerebral thrombosis in 28.57%, subarachnoid hemorrhage in 12.66%, cerebral embolism in 1.95%. 2) The ratio of male to female was 1.01:1. 3) The cerebrovascular accidents were most common in the sixth decade and followed by the fifth and fourth in turn. 4) The seasonal incidence was in order of frequency of Spring, Winter, Autumn and Summer. 5) Among disease preceding the onset of cerebrovascular accidents, hypertension was noted at 75% in cases of cerebral hemorrhge, 61% in cerebral thrombosis and 73% in subarachnoid hemorrhge. 6) The mean duration of underlying hypertension was 13.7 years in cerebral emorrhge, 15.3 years in cerebral thrombosis, 12.2 years in subarachnoid hemorrhage and 14.8 years in cerebral embolism. 7) Major precipitating factor in cerebral hemorrhage and subarachnoid hemorrhage was thought to be physical activity, whereas cerebral thrombosis and cerebral embolism frequently occured during sleeping or resting state. 8) The mean cholesterol level were 204.1mg% in cerebral hemorrhage, 214.9mg% in cerebral thrombosis, 211.7mg% in subaraachnoid hemorrhage and 217.0mg% in cerebral embolism. 9) The mortality rate was 12.2% in total, 16.6% in cerebral hemorrhage 2.3% in cerebral thrombosis, 15.45 in subarachnoid hemorrhage and 25% in cerebral embolism.
Cerebral Hemorrhage
;
Cholesterol
;
Female
;
Hemorrhage
;
Humans
;
Hypertension
;
Incidence
;
Inpatients
;
Intracranial Embolism
;
Intracranial Thrombosis
;
Male
;
Mortality
;
Motor Activity
;
Precipitating Factors
;
Seasons
;
Stroke*
;
Subarachnoid Hemorrhage
2.Heart Rate Adjustment of ST Segment Depression as a Myocardial Ischemia Index of Coronary Artery Disease.
Sang Wook KIM ; Moo Sun CHANG ; Ho Jun YOO ; Ki Ik KWON ; Un Ho RYOO
Korean Circulation Journal 1993;23(5):676-683
BACKGROUND: Exercise testing is an importnat diagnostic and prognostic procedure in the assessment of patients with ischemic heart disease. But standard ST-segment depression criteria was not high enough to estimate coronary srtery disease. Recently, the heart rate adjustment of ST segment depression, ST segment/heart rate slope and index, have been proposed as a more accurate criteria for diagnosing significant coronary artery disease. The objective of this study was to compare the discriminating power of proposed ST segment/heart rate slope and index with that of a standard method of assessing exercise-induced ST segment depression for estimating coronary artery disease. METHODS: Sixty nine patients with ischemic heart disease were studied with exercise treadmill testing and coronary angiography. Computer-measured ST-segment amplitudes were obtained and analysis of the heart rate-adjusted ST segment depression(ST/HR slope and big up tri, Delta ST/HR index) was done. The sensitivity, specificity, and extent of coronary artery disease on each criteria were compared. RESULTS: 1) The sensitivity of big up tri, Delta ST/HR index partition of 1.6uV/beats/min was slightly higher(83%) and the specificity of ST/HR slope partition of 2.4uV/beats/min was higher(87%) than the standard exercise electrocardiographic criteria. 2) Early onset of ischemic ST-segment depression, profound ST-segment depression(> or =2mm), and downsloping ST-segment were associated with more extensive coronary artery disease. 3) On ST/HR slope, no CAD was 1.7+/-0.26uV/beats/min, one vessel disease was 2.6+/-0.34 uV/beats/min, two vessel disease was 2.7+/-1.36uV/beats/min, one vessel disease was 2.8+/-0.35uV/beats/min, and on big up tri, Delta ST/HR index, no CAD was 1.8+/-0.38uV/beats/min, one vessel disease was 2.8+/-1.36uV/beats/min, two vessel disease 3.4+/-1.44uV/beats/min, and three vessel disease was 3.7+/-2.95uV/beats/min. The increment of ST/HR slope and big up tri, Delta ST/HR index were associated with the coronary artery disease and its severity, but the correlations were not high enough. CONCLUSION: The heart rate adjustment of ST segment depression was not high enough for improved detection of coronary artery disease, compared with standard ST-segment depression criteria. But these indexes can be improved the clinical usefulness of the treadmill exercise test for coronary aretry disease.
Coronary Angiography
;
Coronary Artery Disease*
;
Coronary Vessels*
;
Depression*
;
Electrocardiography
;
Exercise Test
;
Heart Rate*
;
Heart*
;
Humans
;
Myocardial Ischemia*
;
Sensitivity and Specificity
3.Ischemic Preconditioning in Isolated Rabbit Heart : Effect on Left Ventricular Function, Infarct Size, and Protein Kinase C*.
Ho Jun YOO ; Jun Soo PARK ; Hyun KIM ; Un Ho RYOO ; Bong Jin RAH ; Ho Dirk KIM
Korean Circulation Journal 1996;26(2):541-552
BACKGROUND: It has been demonstrated that ischemic preconditioning(IP, repetitive brief period of ischemia and reperfusion) enhances recovery of post-ischemic contractile dysfunction and reduces incidences of reperfusion-arrhythmia and infarct size after a prolonged ischemia. A lot of mechanisms have been proposed, however, controversies still remain. Recent studies suggested that IP could activate protein kinase C(PKC). Therefore, we measured left ventricular function, myocardial creatinin and PKC activities, and infarct size to assess whether IPs cardioprotective effect is related to PKC activation using isolated rabbit hearts. METHODS AND RESULTS: Hearts isolated from New Zealand White rabbits(1.5-2.0kg body weight) were perfused with Tyrode solution by Langendorff technique. After stabilization of baseline hemodynamics, the hearts were subjected to 60-min ischemia followed by 120-min reperfusion with IP(IP group, n=15) or without IP(control group, n=14), IP was induced by 4 cycles of 5-min global ischemia and 5-min reperfusion. Left ventricular function including developed pressure(LVEDP), dp/dt, heart rate(HR), and coronary flow(CF) was measured to determine the recovery of LVEDP, RPP(rate-pressure product, HRXLVEDP) and CF to baseline measurement. Frequency of arrhythmia was counted on reperfusion. Myocardial CK-MB, myocardial cytosolic and membrance PKC were measured and the infarct size was determined by staining with tetrazolium salt and planimetry. Data were analyzed by one-way ANOVA, Tukey's post-hoc test and t-test. There was no significant differences in the recovery of LVEDP, dp/dt, RPP, and CF and frequency of arrhythmia during reperfusion between the control and the IP groups. In comparison with the control groups, however, CK-MB was significantly lowered in the IP group(P < 0.05). Cytosolic PKC was significantly decreased but membrance PKC was increased(p < 0.05). These findings indicate that PKC was translocated and activated by IP. Furthermore infarct size was smaller and limited to the antero-lateral or posterior wall and papillary muscle in the IP group(p < 0.05). CONCLUSION: These results indicate that IP dose not improve post-ischemic contractile dysfunction after a prolonged ischemia of 60 minutes but has an infarct-limiting effect. This cardioprotective effect of IP may be related to PKC activation.
Arrhythmias, Cardiac
;
Cytosol
;
Heart*
;
Hemodynamics
;
Incidence
;
Ischemia
;
Ischemic Preconditioning*
;
New Zealand
;
Papillary Muscles
;
Protein Kinase C
;
Protein Kinases*
;
Reperfusion
;
Ventricular Function, Left*
4.The Effect of Left Ventricualr Mass on the Transmitral Blood Flow.
Wang Seong RYU ; Sang Jun SHIM ; Ki Ik KWON ; Chang Soon KANG ; Un Ho RYOO
Korean Circulation Journal 1988;18(1):103-111
Measurements of mitral flow velocity by pulsed Doppler echocardiography are very useful in evaluating left ventricular diastolic filling properties. In hypertensive patients, abnormalities of diastolic function may precede systolic abnormalities and may serve as a more sensitive marker of end organ damage. We estimated left ventricular nass by 2-D echo short axis area-length method and compared with peak mitral flow velocity in early diastole(PFVE)and during atrial systolic(PFVA). There was a significant increase of LV mass and LV mass indices in the hypertensive patients and PFVE/PFVA ratio was decreased in them. Aithough there was no relationship between blood pressure and PFVE/PFVA ratio, a significant relationship was demonstrated between LV mass index and PFVE/PFVA ratio in the hypertensive patients.
Axis, Cervical Vertebra
;
Blood Pressure
;
Echocardiography, Doppler, Pulsed
;
Humans
5.Clinical Analysis of Mild Head Trauma in Children Admitted to Department of Emergency Medicine.
Yong Su LIM ; Suk Lan YOUM ; Jung Ho SHIN ; Eell RYOO ; Hyuk Jun YANG ; Cheol Wan PARK ; Keun LEE
Journal of the Korean Society of Emergency Medicine 1999;10(3):456-465
BACKGROUND: Head injury is one of the most common causes of emergency department visits and hospital admission in the pediatric populations, and most injuries are mild. In mild head injury, grading of severity and decision of hospital admission are difficult in the emergency department. Recent studies have suggested that patients with a normal head CT scan and neurologic exam following head injury can be safely discharged from the emergency department. However, previous studies have relied on incomplete patient follow-up and been limited for the most part to adult population. So we performed this study to assess clinical course and the incidence of significant CNS sequelae in children with a normal head CT scan and no focal neurologic sign after mild head injuries during hospital admission and follow-up for 1 month. METHODS: We reviewal the records of children(n=209) admitted to the department of emergency medicine with closed head injuries from Jan. 1, 1996 to Dec. 31, 1996, who's initial Glasgow Coma Scale was 13 to 15, and have no focal neurologic sign and a normal head CT scan. RESULT: 209 patients were studied with a mean age of 6.8(range 3 months to 15years), and 66.5% were male. The most common mechanisms of injury were pedestrian T.A(50.2%) and fall(11.5%). Patients had a mean Glasgow coma scale of 14.8 and mean Abbreviated Injury Score of 1.3. Patients had clinical symptoms of headache(49.3%), vomiting(44.5%), loss of consciousness(LOC)(29.6%), amnesia(10.0%), sleepiness(8.6%), irritability(8.6%), confusion(2.9%) and seizure(1.9%). The mean duration of admission was 4.3 days(range: 6 hours-20 days) and the mean duration of symptom was 36.4 hours. No child developed significant CNS sequelae during hospital admission. However, during hospital admission, aye children(all were preschooler) had psychologic complication ; one child developed post-traumatic stress disorder requiring psychologic treatment for 3 months. Three children developed enuresis and two children developed night terror. During 1 month fallow-up, one child developed a symptomatic hemorrhagic contusion 5 days after the head injury, not requiring neurosurgical treatment. CONCLUSION: Among children with an initial Glasgow Coma Scale of 13 to 15, a normal head CT scan and no focal neurologic sign after mild head injuries, delayed intracranial sequelae are extremely uncommon. So these patient may be discharged home with parental supervision and education for dose observation.
Adult
;
Child*
;
Contusions
;
Craniocerebral Trauma*
;
Education
;
Emergencies*
;
Emergency Medicine*
;
Emergency Service, Hospital
;
Enuresis
;
Follow-Up Studies
;
Glasgow Coma Scale
;
Head Injuries, Closed
;
Head*
;
Humans
;
Incidence
;
Male
;
Neurologic Manifestations
;
Organization and Administration
;
Parents
;
Stress Disorders, Post-Traumatic
;
Tomography, X-Ray Computed
6.Significance of QRS Scoring System in the Acute Myocardial Infarction.
Chang Hoon HYUN ; Ho Jun RYU ; Jun Kyung BANG ; Wang Seong RYU ; Ki Ik KWON ; Chang Soon KANG ; Un Ho RYOO
Korean Circulation Journal 1988;18(3):419-430
Early and longterm prognosis depended on the extents of acute myocardial infarction and residual myocardial function. Many clinical methods have been evaluated to determine their ability to estimate the size of myocardial infarcts. But because of many disadvantages simplified QRS scoring system, used with standard 12-lead EKG, was developed, which is noninvasive, inexpensive and easily releatible. Therefore, the correlation between QRS and peak CK,killip classification were evaluated in 55 patients with initial acute myocardial infarction at the Chung-Ang University, Yong-San and Pil-Dong Hospital during the period from January 1983 to December, 1986. The results were as follows : 1) The average QRS score of the anterior wall infarction is 7.1 and that of the inferior wall infarction is 4.5 and there is a statistical significance(p<0.01). 2) In the acute myocardial infarction, the correlation coefficeient between the QRS score and the killip classification is 0.66(p<0.05). 3) In the acute myocardial infarction, the average QRS score is 6.3 and the correlation coefficient between the leak CK and the QRS score is 0.52(p<0.05). 4) In the anterior wall infarction, the average QRS score is 7.1 and the correlation coefficient between the peak Ck and QRS score is 0.48(p<0.05). 5) In the inferior wall infarction, the average QRS score is a 4.5 and the correlation coefficient between the leak CK and QRS score is 0.79(p<0.05).
Classification
;
Electrocardiography
;
Humans
;
Infarction
;
Myocardial Infarction*
;
Prognosis
7.Serum Creatine Kinase for Early Diagnosis and Evaluation of Reperfusion in Acute Myocardial Infarction.
Jae Gyeok YOO ; Chul Woo KIM ; Tae Ho SONG ; Hyeon Dae KIM ; Sung Yun LEE ; Eun Woo LEE ; Ho Jun RYOO ; Chee Jeong KIM ; Un Ho YOO
Korean Circulation Journal 1994;24(5):683-689
BACKGROUND: Acute myocardial infarction is one of major cardiovascular disease that increases according to the changes of diet and life style. Early diagnosis and treatment of acute myocardial infarction is critical for better prognosis and for reducing mortality. But early diagnosis of acute myocardial infarction is limited by several factors. Recently it was reported that measurements of several serum cardiac enzymes were useful for early diagnosis of acute mocardial infarction. This study was performed to investigate which method of serum creatine kinase measurement is the faster and accurate and whether serum creatine kinase is an early noninvasive predictor of coronary artery patency following thrombolysis in patients with acute myocardial infarction by means of analysis of serial changes in serum creatine kinase. METHODS: This study included 32 patients who had acute myocardial infarction. Serum CK-MB was measured by electrophoretic method and enzymatic immuoasssay method. and compared with EKG and total CK activity which measured by photoabsorbance method. Also we studied whether CK time-activity could be predictor for reperfusion. RESULTS: Immunoassay method accurately measures the serum CK-MB and correlates well with that of electrophoretic method in patients with acute mocardial infarction. Immunoassay method is more sensitive than EKG and has the similar sensitivity to electrophoretic method in diagnosis of acute myoardial infarction. Reperfusion of an occluded coronary artery results in early elevation of serum creatine kinase and CK-MB reflected by earlier appearance time, peak, and onset of clearance. CONCLUSION: Because immunoassay measurement of serum creatine kinase is faster than electrophoresis and requires less technical expertise, it is possible to make diagnosis in patients with acute myocardial infarction in a more timely and cost effective manner and creatine kinase is good predictor of recanalization of an occluded coronary artery after intravenous thrombolytic therapy.
Cardiovascular Diseases
;
Coronary Vessels
;
Creatine Kinase*
;
Creatine*
;
Diagnosis
;
Diet
;
Early Diagnosis*
;
Electrocardiography
;
Electrophoresis
;
Humans
;
Immunoassay
;
Infarction
;
Life Style
;
Mortality
;
Myocardial Infarction*
;
Professional Competence
;
Prognosis
;
Reperfusion*
;
Thrombolytic Therapy
8.Effectiveness of the Visual Analogue Scale (VAS) as a Method of Pain Measurement in Children and Adolescents who Visit the Pediatric Emergency Department.
Sun Ok JE ; Eell RYOO ; Jin Joo KIM ; Hyuk Jun YANG ; Gun LEE ; Seong Youn HWANG ; Jun Ho LEE
Journal of the Korean Society of Emergency Medicine 2009;20(2):204-209
PURPOSE: The aim of this study was to determine the reliability and validity of the Visual Analogue Scale (VAS), as a pain measurement tool in children and adolescents who visit the Pediatric Emergency Department (PED). METHODS: This was a prospective, descriptive study, using convenience sampling, of all children between the ages of 5 and 16 years who presented to a PED. The children were excluded who did not cooperate, who altered mentality or sensorium, who were clinically unstable or required admission to the intensive care unit, or who were developmentally delayed. Children were asked to mark their pain severity on the standardized 100-mm VAS, being instructed to slide the marker to the point on the scale that best described their pain. They were also asked to describe their pain as "none", "mild", "moderate", "severe", or "worst". RESULTS: A total of 716 children and adolescents were enrolled with a mean age of 9.7+/-3.6 years. Males accounted for 439(61.3%). In the children and adolescent who rated their pain as none, (n=10), the mean score was 3.9 mm (95% CI = 0.7 to 7.1); for mild (n=292), the mean score was 30.1 mm (95% CI=28.8 to 31.5); and for moderate pain (n=209) the mean score was 52.4 mm (95% CI=51.2 to 53.6). For those with severe pain (n=187), the mean score was 75.0 mm (95% CI=73.5 to 76.5), and for those who considered their pain the worst (n=18), the mean score was 94.7 mm (95% CI=90.0 to 99.5) (p=0.000). There was no significant relationship between VAS and sex, injury mechanism, or location of pain (p=0.387, p=0.233, p=0.144). The VAS was higher in patients who visited at night on ordinary days (p=0.022) and who were diagnosed with a fracture (71.1+/-20.0 mm) or headache (60.5+/-21.0 mm) (p=0.000). The value was also higher in patients who needed admission (64.9+/-21.5 mm) and an operation (70.7+/-23.0 mm) (p=0.000, p=0.000). CONCLUSION: This study demonstrates the quantification via the VAS of pain severity in children and adolescents who visit to the PED. This scale can be used as a tool for triage, pain management, and deriving a prognosis in the PED.
Adolescent
;
Child
;
Emergencies
;
Headache
;
Humans
;
Intensive Care Units
;
Male
;
Pain Management
;
Pain Measurement
;
Prognosis
;
Prospective Studies
;
Reproducibility of Results
;
Triage
9.A Clinical study of tuberculous lymphadenitis.
Hye Jung PARK ; Hun Mo RYOO ; Kyeong Cheol SHIN ; Jong Seon PARK ; Jin Hong CHUNG ; Kwan Ho LEE ; Chang Ho KIM ; Jae Yong PARK ; Tae Hoon JUNG ; Sung Beom HAN ; Young Jun JEON ; Dae Sung HYUN ; Sang Chae LEE
Tuberculosis and Respiratory Diseases 2000;48(5):730-739
BACKGROUND: The aim of this study was to analyze the clinical manifestations and efficacy of treatment regimens in order to determine the adequate combination of anti-tuberculotic agent and duration of treatment for tuberculous lymphadenitis. METHODS: We made a review of 373 patients with tuberculous lymphadenitis, who were admitted to four medical college hospitals in Taegu Korea from 1989 to 1998, and their diagnoses were confirmed histologically and bacteriologically. RESULTS: The incidence of tuberculous lymphadenitis was 71.3% in women and 57.7% were between the ages of 20 and 39 years. The most common symptom was painless swelling. The most commonly involved lymph nodes were unilateral superficial cervical lymph node groups. Tuberculous lymphadenitis was accompanied with active pulmonary tuberculosis, commonly. The sensitivity of fine needle aspiration(FNA) in tuberculous lymphadenitis was 79.6% and 92.2% of the patients had a strong positive reaction to the tuberculin skin test. The most commonly prescribed anti-tuberculotic regimen was the combination of INF, RMP, EMB and PZA(62.6%). Eighty percent of patient were treated for 9-12 months. There was no significantly difference in the recurrence rate of tuberculous lymphadenitis between the combinations of anti-tuberculotic agent, including INF and RMP, and between the durations of treatment, for a period of 6 months of treatment, for a period of 6 months of more. CONCLUSION: The combination of FNA cytologic examination and tuberculin skin test may be helpful in the diagnosis of tuberculous lymphadenitis. We propose that the combination of anti-tuberculotic agents, INH, RMP, EMB, and PZA, be prescribed to patients for 6 to 9 months.
Daegu
;
Diagnosis
;
Female
;
Humans
;
Incidence
;
Korea
;
Lymph Nodes
;
Needles
;
Recurrence
;
Skin Tests
;
Tuberculin
;
Tuberculosis, Lymph Node*
;
Tuberculosis, Pulmonary
10.Analysis of Cardiopulmonary Resuscitation In Ward of Tertiary Hospital.
Jin Ho RYOO ; Kyung Un JEONG ; Jun Seon WEE ; Jeong Mi MOON ; Byoung Jo JUN ; Won Sik MOON ; Yong Kweon KIM ; Jung Il SO ; Tag HEO ; Yong il MIN
Journal of the Korean Society of Emergency Medicine 2001;12(4):369-378
BACKGROUND: Although cardiopulmonary resuscitation(CPR) is a very effective therapy in cardiac arrest, it is hard to prove the true effectiveness of CPR. Several studies about out-of-hospital and emergency department CPR exist, but only a few reports about in-hospital CPR are available. This study was designed to investigate in-hospital cardiac arrest, to analyze the result of CPR, and to evaluate the problems associated with in-hospital CPR. METHODS: A clinical analysis of 71 cases of in-hospital CPR announcement from January 2000 to August 2000 was performed. The initial rhythm on cardiac arrest, return of spontaneous circulation(ROSC), and the survivals were analyzed in the case of the 46 true cardiac arrest patients. RESULTS: During 8 months, there were 71 cases of in-hospital CPR announcement. Among them, there were 46 cases of true cardiac arrest and 25 cases of non-cardiac arrest. Of the 46 true cardiac-arrest cases, 27(58.7%) experienced ROSC, 15(32.6) survived for over 24 hours, and 7(15.2%) survived to be discharged. The initial rhythms on cardiac arrest were 30 cases(65.2%) of asystole, 14(30.4%) of PEA(pulseless electrical activity), and 2(4.3%) of ventricular fibrillation, with ROSC being 17 cases(56.7%), 9(64.3%) and 1(50.0%) cases and discharged survivors being 4 cases(13.3%), 3(21.4%) and 0(0.0%) cases, respectively. CONCLUSION: Extraordinarily high proportions of asystole and PEA were seen in the initial rhythm of cardiac arrest, and those were associated with high survival rates. Although further study is needed to evaluate the course leading to this high proportion of asystole and PEA, this result suggests that if the EMS system in the hospital is activated promptly and systematically, a better outcome will be achieved in case of cardiac arrest with asystole and PEA.
Cardiopulmonary Resuscitation*
;
Emergency Service, Hospital
;
Heart Arrest
;
Humans
;
Peas
;
Survival Rate
;
Survivors
;
Tertiary Care Centers*
;
Ventricular Fibrillation