No abstract available.
Reference Values*

OBJECTIVE: Whether exposure to chronic noise induces an increase in blood pressure, or the development of hypertension, has not been established. A cohort study was performed to identify the effects of chronic noise exposure on blood pressure. METHODS: 530 males working at a metal manufacturing factory in Busan, Korea were enrolled for the study. They were monitored for 9 consecutive years, from 1991 to 1999, with an annual health check-up. The subjects were divided into 4 groups, which were determines by noise level categories(NLC) according to noise intensity ; NLC-I: office workers, exposed to noise a level below 60dB(A); NLC-II: field technical supporters or supervisors, frequently exposed to workplace noise, wearing no hearing protection device; NLC-III: workers, exposed to workplace noise below 85 dB(A), wearing ear plugs or muffs; NLC-IV: workers, exposed to workplace noise over 85 dB(A), wearing both ear plugs and muffs. RESULTS: After controlling possible confoundens, such as baseline age, smoking, alcohol intake, exercise, family history of hypertension, systolic(SBP) or diastolic blood pressure(DBP) and changes in BMI (body mass index), the pooled mean for the systolic blood pressures, over the duration of the study period, were 3.8mmHg, 2.0mmHg and 1.7mmHg higher in NLC-IV, NLC-III NLC-II groups, respectively, than in the NLC-I group. There were no significant differences in the diastolic blood pressures between the groups. CONCLUSION: This study suggests that chronic noise exposure increases systolic blood pressure independently, among male workers.
Blood Pressure* ; Busan ; Cohort Studies* ; Ear ; Hearing ; Humans ; Hypertension ; Korea ; Male* ; Noise* ; Smoke ; Smoking

Thyrotoxic periodic paralysis (TPP) is associated with hypokalemia and occurs sporadically and usually in young adult males. We report ten cases with TPP ; all were males, mean onset age was 32.4 years old. The duration of attack. Varied from 10 to 18 hours. The distribution of paralysis was confined to limb muscles; more severe in proximal limbs and lower extremities. Potassium levels during acute attack correlated with the severity of paralysis and ECG changes, but not with the severity of decrease in TSH level. In all cases, administration of potassium salts was successful in treatment of acute attack. A patient had further attack in spite of euthyroid state under the treatment of thyrotoxicosis for one year. Another patient was free from paralytic attacks by chronic administration of the potassium salt and acetazolamide without treatment of thyrotoxicosis.
Acetazolamide ; Age of Onset ; Electrocardiography ; Extremities ; Humans ; Hypokalemia ; Lower Extremity ; Male ; Muscles ; Paralysis* ; Potassium ; Salts ; Thyrotoxicosis ; Young Adult

Tension pneumocephalus is rare while pneumocephalus is relatively common. The former has sudden or insidious deterioration in neurologic symptoms and signs comparing to self-limited pneumocephalus. This report is of a 19 years old male with tension pneumocephalus in the right frontal lobe two underwent right frontal osteoplastic craniotomy.
Craniotomy ; Frontal Lobe ; Humans ; Male ; Neurologic Manifestations ; Pneumocephalus* ; Young Adult

The authors report a case of 21-year-old, neurologically normal female who presented with a teratoma contained in a cervical meningocele. The concurrence of a congenital neoplasm within the spine associated with spina bifida cystica seems to be a very rare event. The radiographic studies, histological examinations, treatment and follow up findings in this case are presented with a review of the literature.
Female ; Follow-Up Studies ; Humans ; Meningocele* ; Spina Bifida Cystica ; Spine ; Teratoma* ; Young Adult

No abstract available.
Diabetic Ketoacidosis* ; Lung Abscess* ; Lung* ; Mucormycosis*

Sinus of Valsalva aneurysms are rare cardiac anomalies and are usually caused by the separation of the aortic wall media from the valve ring tissue. These aneurysms frequently rupture into the low-pressure areas like the right ventricle and right atrium, rarely do they rupture into the left atrium, left ventricle, pericardial sac, or pulmonary artery. Cerebral infarction has been reported as a rare complication of unruptured sinus of Valsalva aneurysm. We experienced very rare two cases of Valsalva aneurysms of right coronary sinus dissecting into the interventricular septum in patients with cerebral infarction. In two cases these aneurysms ruptured into the left ventricle. These aneurysms were excised and the defect was closed with autopericardium. At the end of the surgical repair, coaptation was found to be insufficient and aortic valve replacement was undertaken.
Aneurysm* ; Aortic Valve ; Cerebral Infarction* ; Coronary Sinus ; Heart Atria ; Heart Ventricles ; Humans ; Pulmonary Artery ; Rupture ; Sinus of Valsalva*

BACKGROUND: The interpretation of electrocardiographic change in treadmill exercise test is difficult when the test is performed in patients with abnormal resting electrocardiography. In patients with primary nagative T wave, normalization of primary negative T wave(pseudonormalization)is not uncommon finding during treadmill exercise test. The mechanism of pseudonormalization is uncertain and the interpretation is difficult. Thus this study was performed to evaluate the diagnostic significance of pseudonormalization during treadmill exercise test. METHODS: 200 cases who showed primary negative T wave at rest were included in this study. The results were classified as positive, borderline positive, borderline negative, negative, non-diagnostic and pseudonormalization. RESULTS: Pseudonormalization during treadmill exercise test was oberved in 78(39%) of the 200 cases who had primary negative T wave at rest. Coronary angiography and left ventriculography were performed in 13(mean age 56+/-7 year, male vs. female 1:2.25) of 78 cases who showed pseudonormalization during exercise. They had no history of acute myocardial infarction and no abnormalities such as abnormal Q wave, left ventricular hypertrophy,bundle branch block,right ventricular hypertrophy and QRS widening above 0.1ms in resting electrocardiography. There were significant stenosis in only 3 cases; 2 cases in left anterior descending coronary artery and 1 case in right coronary artery. CONCLUSION: In treadmill exercise tests, pseudonormalization appears as non-specific finding for the diagnosis of ischemic heart disease becuase it is observed in either patients with or without coronary artery stenosis.
Constriction, Pathologic ; Coronary Angiography ; Coronary Stenosis ; Coronary Vessels ; Diagnosis ; Electrocardiography ; Exercise Test* ; Female ; Humans ; Hypertrophy ; Male ; Myocardial Infarction ; Myocardial Ischemia*

No abstract available.
Arteries* ; Atherectomy*

Carcinoembryonic antigen(CEA) in blood and CSF was reported to be increased in cases of nervous system neoplasms by some investigators. To evaluate the oncological diagnostic value of CEA in the neurosurgical conditions, this study has been performed on 24 nervous system neoplasms and 8 non-nervous system as well as 49 controls. In addition, alpha-fetoprotein was also measured on the same conditions because of its close oncologic nature and recent diagnostic application on the general surgical conditions. The CEA concentration in blood and CSF were determined by CEA Radioimmunoassay kit, and the alpha-fetoprotein in blood and CSF were determined by GammaDab kit. The result showed that concentration of CEA and alpha-fetoprotein was higher and seemed to diagnostic in Extra-CNS neoplasma. In nerovous system, however, these were the lower than we expected, although were higher than control. Moreever, these levels were not unique on same oncologic condition and rather somewhat variable. From these results, increased concentration of these itself may be considered suggestive of existence of nervous system neoplasm, but it does mean neither degree of malignancy nor its origin.
alpha-Fetoproteins* ; Carcinoembryonic Antigen* ; Central Nervous System ; Humans ; Nervous System Neoplasms ; Radioimmunoassay ; Research Personnel