To investigate the effect of hyperoxia on EKG findings and to evaluate the applicability of EKG as noninvasive monitoring index of oxygen toxicity, 38 rabbits were continuously exposed to 6 different conditions-3 hyperbaric oxygenations (HBO-2.5, 3.5 and 5ATA, 100% O2), normobaric oxygenation (NBO, 100% O2), hyperbaric aeration (HBA-5ATA, 21% O2) and normobaric aeration (NBA, 21% O2)-for 120 minutes and their EKG and time to dyspnea and convulsion were recorded. Dyspnea and death were observed in exposure conditions of HBO-3.5 and HBO-5 (Positive rate of dyspnea; 10%, 100%, death; 10%, 25%, respectively) only, and convulsion in 4 oxygenation groups (NBO; 20%, HBO-2.5; 20%, HBO-3.5; 20%, HBO-5; 88%). Abnormal EKG findings included arrhythmia and ST-T changes and the incidences was increasing with doses(partial pressure of oxygen). In addition to EKG change, findings observed during exosure were dyspnea and convulsion in the order of appearence and when non specific ST-T change was accepted as positive (abnormal) finding, the frequency of abnormal EKG was statistically significant(p<0.01), but when it was excluded from positive results, the frequency of EKG change was not significant(p>0.05). These results suggest that the effect of hyperoxia on heart is myocardial ischemia and arrhythmia, that oxygenation more than 3.5ATA causes myocardial damage in 120 minutes exposure, and that EKG is valuable as monitoring index of oxygen toxicity.
Arrhythmias, Cardiac ; Dyspnea ; Electrocardiography* ; Heart ; Hyperbaric Oxygenation ; Hyperoxia* ; Incidence ; Myocardial Ischemia ; Oxygen ; Rabbits* ; Seizures

We retrospectively analyzed 40 adrenalectomies due to 13 cases of primary aldosteronism, 12 cases of Cushing's syndrome and 15 cases of pheochromocytoma, which were performed at Chungnam National University Hospital during the last 10 years. Of the 25 patients who presented with adrenal cortical tumors(primary aldosteronism and Cushing's syndrome), 23 had an adenoma and two had cortical hyperplasia. The overall ratio of males to females was 2:1. As to the age distribution, primary aldosteronism was predominant in the 4th and the 5th decades and Cushing's syndrome; in the 3rd and the 4th decades; however, pheochromocytoma was almost evenly distributed in 2nd through the 6th decades. Headaches, fatigue, and general weakness were the most frequent symptoms in primary aldosteronism; weight gain or a change in fat distribution in Cushing's syndrome; and headaches or blurred vision related to hypertension and palpitation in pheochromocytoma. Postoperative complications mostly occurred in patients with Cushing's syndrome: There were four wound infections, including one abdominal abscess, one pleurisy, one cerebral and cerebellar infaction, and two intestinal obstructions, but there were no postoperative deaths.
Abdominal Abscess ; Adenoma ; Adrenalectomy ; Age Distribution ; Chungcheongnam-do ; Cushing Syndrome ; Fatigue ; Female ; Headache ; Humans ; Hyperaldosteronism ; Hyperplasia ; Hypertension ; Intestinal Obstruction ; Male ; Pheochromocytoma ; Pleurisy ; Postoperative Complications ; Retrospective Studies ; Weight Gain ; Wound Infection

We retrospectively analyzed 40 adrenalectomies due to 13 cases of primary aldosteronism, 12 cases of Cushing's syndrome and 15 cases of pheochromocytoma, which were performed at Chungnam National University Hospital during the last 10 years. Of the 25 patients who presented with adrenal cortical tumors(primary aldosteronism and Cushing's syndrome), 23 had an adenoma and two had cortical hyperplasia. The overall ratio of males to females was 2:1. As to the age distribution, primary aldosteronism was predominant in the 4th and the 5th decades and Cushing's syndrome; in the 3rd and the 4th decades; however, pheochromocytoma was almost evenly distributed in 2nd through the 6th decades. Headaches, fatigue, and general weakness were the most frequent symptoms in primary aldosteronism; weight gain or a change in fat distribution in Cushing's syndrome; and headaches or blurred vision related to hypertension and palpitation in pheochromocytoma. Postoperative complications mostly occurred in patients with Cushing's syndrome: There were four wound infections, including one abdominal abscess, one pleurisy, one cerebral and cerebellar infaction, and two intestinal obstructions, but there were no postoperative deaths.
Abdominal Abscess ; Adenoma ; Adrenalectomy ; Age Distribution ; Chungcheongnam-do ; Cushing Syndrome ; Fatigue ; Female ; Headache ; Humans ; Hyperaldosteronism ; Hyperplasia ; Hypertension ; Intestinal Obstruction ; Male ; Pheochromocytoma ; Pleurisy ; Postoperative Complications ; Retrospective Studies ; Weight Gain ; Wound Infection

The purpose of this study was to examine the reliability and validity of attention deficit disorder evaluation scale-school version(ADDES-SV). Between October 1996 and November 1996, ADDES-SV was administered to 263 elementary school students in the second grade and between Jun 1996 and October 1996, 28 attention deficit hyperactivity disorder patients. In the reliability test, the test-retest reliability coefficient was significantly high and that of inattention was 0.88, that of impulsivity was 0.80, that of hyperactivity was 0.83 and total score was 0.83. In the reliability test by internal consistancy, the Cronbach alpha coefficient was significantly high and that of inattention was 0.98, that of impulsivity was 0.87, that of hyperactivity was 0.87(p<0.05). The half-sprit reliability coefficient by first-second half method showed high correlation and that of inattention was part 1: 0.96, part 2: 0.96 impulsivity was part 1: 0.95, part 2: 0.93, hyperactivity was part 1: 0.92, part 2: 0.94(p<0.05). Inter-rater reliability by pearson correlation coefficient was significantly high and that of inattention was 0.92, that of impulsivity was 0.87, that of hyperactivity was 0.89 and total score was 0.89. The concurrent validity between ADDES-SV and CAP scale was 0.85 in attention deficit hyperactivity disorder patient group and 0.79 in normal control group(p<0.05). In discriminant validity test between attention deficit hyperactivity disorder patient group and normal control group, the patient group showed higher score(p<0.05). The total discriminant capacity of the patient group in ADDES-SV was 94.6%. In this point of view, ADDES-SV scale showed high reliability and validity in applying to Korean subjects and was proved to be the useful screening test tool for attention deficit hyperactivity disorder research.
Attention Deficit Disorder with Hyperactivity* ; Humans ; Impulsive Behavior ; Mass Screening ; Reproducibility of Results*

No abstract available.
Humans

No abstract available.
Family Practice* ; Follow-Up Studies* ; Humans ; Internship and Residency*

No abstract available.

No abstract available.
Thyroid Gland*

Splenic hamartomas are rare benign tumors, which are usually small in size and asymptomatic and which are discovered incidentally at surgery or autopsy. The authors report on a case of splenic hamar toma in a 35-year-old man with intermittent left upper quardrant pain, who underwent an elective splenc tomy. Final pathology confirmed diagnosis of a hamartoma of the red pulp in the spleen. The patient's symptoms were resolved after the splenectomy. A splenic hamartoma should be kept in mind in the differential diagnosis of splenic tumors. The authors suggest that a splenectomy is indicated in cases where malignancy cannot be excluded and in cases of associated clinical symptoms or hematologic disorders.
Adult ; Autopsy ; Diagnosis ; Diagnosis, Differential ; Hamartoma* ; Humans ; Pathology ; Spleen* ; Splenectomy

The study subjects in this study are 295 workers who work on one electronics industry, and they were composed of 93 VDT and 202 non-VDT workers. This study was carried out to obtain the prevalence of subjective symptoms and to compare psychological symptom scores from SCL-90-R between VDT and non-VDT work groups. And to verify the relationship between VDT work related symptoms and psychological symptoms, the author compared scL-90-R T scores between symptom complaining and non-complaining groups. The results are summarized as follows: 1. Throughout the prevalence study of VDT work related symptoms according to VDT work state, the author could select the final 10 symptoms by sex; 'eye fatigue', 'foggy vision', 'neck discomfort or pain'. 'shoulder discomfort and pain', 'light headedness', 'dizziness', 'aene`, 'itching sensation on face', 'difficulty in concentration', 'memory disturbance' in males, and 'blurred vision`, 'foggy vision', 'neck discomfort or pain', 'shoulder discomfort and pain`, 'abdominal distention','indigestion', 'acne', 'pricking sensation on face', 'difficulty in concentration', 'memory disturbance` in females. 2. Throughout comparison of psychological symptom scores from SCL-90-R between VDT and non-VDT workers' except `interpersonal sensitivity` in female, Mean T score were higher in VDT workers, but not significantly different between the two groups. These results indicate that the relation between VDT work status and psychological symptoms are not strongly correlated. 3. Because of the nonspecific characteristics of VDT work related symptoms, from the 40 subjective symptoms, the author selected the final 10 symptoms by sex, especially correlated to VDT, and divided the study subjects into symptom complaining and non-complaining groups. The mean SCL-90-R T score between the two groups were compared. Except for the opthalmologic symptoms in females, the scores were significantly different between the two groups in all symptoms. And this indicates that the VDT work related symptoms strongly correlated with the present individual psychological conditions. 4. Due to understand that which of the 9 psychological symptom dimensions are strongly correlated with the subjective symptoms, the author excuted multiple logistic regression analysis, and the result were as follows; 'depression' and 'somatization', in male, and 'obsessive-compulsive' and 'somatization' in female.
Cross-Sectional Studies ; Female ; Humans ; Logistic Models ; Male ; Prevalence ; Sensation