Clinical EPS was performed in 16 normal adults without evidence of conduction disease on the surface standard 12 lead electrocardiogram in order to provide normal electrophysiological values of the sinus node function and AV conduction. EPS was also performed in 15 patients with sick sinus syndrome and 10 patients with AV conduction disturbance to evaluate the clinical usefulness of EPS in detecting sinus node dysfunction and AV conduction disturbance. The results were as follows. 1) The results of sinus node function test in the normal group were m-SNRT 853+/-198msec(range 800-1,560msec), c-SNRT 230+/-66msec(range 120-370msec), and %m -SNRT/SCL 127+/-11%(range 114-149%). 2) In 15 patients with SSS, the M-SNRT were ranged from 1,270 to 12,330msec and 10 patients(66%) had significantly increased m-SNRT exceeding 1,560msec. The c-SNRT were ranged from 230 to 10,730msec and 13 patients(83%) had significantly increased c-SNRT exceeding 370msec. The % m-SNRT/SCL were ranged from 136 to 770% and 12 patients(80%) had significantly increased % m-SNRT/SCL exceeding 150%. 3) The SACT in normal group were 84+/-14msec(range 70-105msec) measured by continuous atrial pacing method and 80+/-19 msec(range 60-115msec) measured by atrial extrastimulation method. 4) In SSS, the SACT measured by continuous atrial pacing method was ranged from 80 to 1,050msec and 11/12 patients(92%) had significantly increased SACT exceeding 112 msec. The SACT measured by atrial extrastimulation method was ranged from 90 to 310msec and 7/8 patients(88%) had significantly increased SACT exceeding 118 msec. 5) C-SNRT, % m-SNRT/SCL, and SACT were more useful in detecting sinus node dysfunction than m-SNRT. 6) The AV conduction intervals in normal group were PA interval 17+/-6(range 5-25msec), AH interval 96+/-18 msec(range 70-135msec), and HV interval 46+/-7msec(range 35-55msec). 7) Rapid atrial pacing induced Wenckebach type second degree AV block proximal to H at pacing rate of 90 to 190/min in 14/16 normal adults. 2 patients maintained intact AV conduction upto maximum pacing rate of 200/min. 8) His bundle electrogram showed the site of AV block in 9 of 10 patients with AV conduction disturbances. The sites of AV block were AV nodal area 1 case, intraHis bundle 4 cases, and infraHis bundle 4 cases. 9) EPS provided a good supportive information that was useful in selecting pacemaker therapy in a patient with chronic bifascicular block who revealed prolonged HV interval and infraHis bundle block at a pacing rate of 70min. 10) The refractory periods of AV conduction system in normal group were AERP 274+/-54msec (range 170-410msec), AVN-FRp 467+/-74msec(range 285-600msec), AVN-ERP 341+76msec(range 190-460), and V-ERP 280+/-25msec(range 240-320msec).
Adult ; Atrioventricular Block ; Electrocardiography ; Electrophysiologic Techniques, Cardiac ; Humans ; Sick Sinus Syndrome ; Sinoatrial Node*

The antihypertensive effects fo aldactazide and serum electrolytes changes before and after treatment with aldactazide were observed. The followings were obtained: 1. Results of antihypertensive therapy with aldactazide in 23 hypertensive patients revealed good effects in 52.17%, fair in 26.09%, poor in 8.7%, and failure in 13.04% of cases. In 78.26% of cases, good or fair control of blood pressure was obtained. 2. Daily doses of aldactazide ranged from 25mg to 50mg depending upon the level of blood pressure. The antihypertensive effects were appeared after average 11 days of administration. 3. The side effects during treatment with aldactazide were dizziness, weakness, indigestion, headache, and restlessness in 26.28% of cases (6 of 23 cases). 4. No significant changes in serum Na and K values were observed before and after treatment with aldactazide for average 23 days.
Blood Pressure ; Dizziness ; Dyspepsia ; Electrolytes ; Headache ; Humans ; Psychomotor Agitation

Myxoma is the commonest intracardiac tumor and it is well known to present in bizarre ways. Calcification of the tumor is uncommon, though probably more frequent in right than in left heart tumors. Diagnosis can be followed by surgery with satisfactory results. A 36 years old man with partially calcified right ventricular myxoma and a 51 years old man with calcified left atrial myxoma, which were revealed different echogenic densities on 2-dimensional echocardiogram and gross calcification on fluoroscopy, were treated with surgical removal. We report above two cases of calcified myxoma with literature review.
Adult ; Diagnosis ; Fluoroscopy ; Heart Neoplasms ; Humans ; Middle Aged ; Myxoma*

The antihypertensive effects of single daily dose of long-acting propranolol(Inderal LA(R)) were observed in 29 cases of essential hypertension, and the results were as follows; 1) Age distribution of the cases was from 39 years to 72 years with the mean age of 51.3. And there were 13 female and 16 male patients. 2) Mean value of the hypotensive effects in systolic and diastolic blood pressure were 22.9 mmHg, and 11.5 mmHg, respectively. 3) The results of the antihypertensive effects were as follows; good 31.0%, fair 34.5%, poor 20.7%, and failure 13.8%. 4) The decrement of heart rate with long-acting propranolol was 9.3 per minute in average. 5) 1 case of nausea and 2 cases of lassitude were noted, but these symptoms were subsided spontaneously with continous medication.
Age Distribution ; Blood Pressure ; Fatigue ; Female ; Heart Rate ; Humans ; Hypertension ; Male ; Nausea ; Propranolol

Sclerosing mesenteritis is a rare condition; it's an idiopathic nonspecific inflammatory process in the adipose tissue of the small bowel mesentery. It often develops into huge masses that contain necrotic fat, and these masses mimick malignancy. It has two pathologically different variants: mesenteric panniculitis (acute or subacute) and retractile-mesenteritis (chronic). Although infection, trauma, local ischemia, surgery and malignancy have been implicated in the etiology of this disease, the exact causes are unknown. The disease usually has a favorable prognosis. The diagnosis is confirmed by biopsy. A 59 year-old man visited in our hospital with vague abdominal pain and diarrhea that he had suffered with during the previous three months. A computed tomography (CT) scan showed a dilated small intestine and also masses in the small bowel mesentery. On the operative findings, fibrous masses were noted in the mesentery. The pathologic report revealed sclerosing mesenteritis. We report here on a case of sclerosing mesenteritis along with a review of the literatures.
Abdominal Pain ; Adipose Tissue ; Biopsy ; Diagnosis ; Diarrhea ; Humans ; Intestine, Small ; Ischemia ; Mesentery ; Middle Aged ; Panniculitis, Peritoneal* ; Prognosis

No abstract available.
Cisplatin* ; Humans ; Nausea* ; Ondansetron* ; Vomiting*

The force-interval relationship of cardiac muscle has been known as not only a fundamental manifestation of beat-to-beat kinetics of intracellular activator calcium which control contractile response but also a potential clinical tool for evaluating cardiac contracile function. In this study were evaluated the force-interval relationship of intact canine left ventricle through mechanical restitution curves by plotting contrctile responses to varying steady state, extrasystolic and postextrasystolic intervals, and compared the force-interval relationships of intact canine left and right ventricles quantitatively. Effects of localized myocardial ischemia on the left ventricular force-interval relationship and relaxtion function were also evaluated 30 minutes after ligating proximal left anterior descending coronary artery through observing contractile and relaxtion responses to various intervals. 1) Mechanical restitution curve of left ventricle showed that left ventricular dp/dt max responses rose stiffly until plateau level with increasing postextrasystolic intervals, then declined with further increment of postextrasystolic intervals. 2) Mechanical restitution curve of left ventricle shifted leftward and upward with shortening of steady state and extrasystolic intervals, which suggest intracellular calcium kinetics during electrical diastole may operate as a mechanism of the force-interval relationship. 3) Steady state contractile responses remained unchanged but maximal contractile responses increased significantly or contractile reserve in intact left ventricle. 4) Normalized force-interval relationships of left and right ventricle were similar quantitatively, which suggest the force-interval relationship is independent of structural factors in intact canine heart. 5) Occlusion of coronary artery lowered absolute values of left ventricular dp/dt max responses to varying postextrasystolic intervals, but didn't show significant changes of normalized dp/dt max responses, which suggest force-interval relationship be also present in spite of localized myocardial ischemia. 6) Responses of normalized left ventricular dp/dt min to varying postextrasystolic intervals were similar to those of normalized dp/dt max but reduced after coronary artery occlusion in the range above 100% dp/dt max response, which may be used for the detection and evaluation of deranged myocardial relaxation in the left ventricle with localized myocardial ischemia.
Calcium ; Coronary Vessels ; Diastole ; Heart ; Heart Ventricles ; Kinetics ; Myocardial Ischemia ; Myocardium ; Relaxation ; Ventricular Function, Left*

BACKGROUND: Propafenone is a new class IC antiarrhythmic drug that has been found to be effective in both supraventricular and ventricular tachyarrhythmias. We studied the electrophysiologic and long-term effects of oral propafenone in the patients with paroxysmal supraventricular tachycardia(PSVT). METHODS: The electrophysiologic study was done in 15 patients with PSVT to assess the short-term efficacy of propafenone 450mg daily. For 10 patients with short-term efficacy, follow up study was done to assess the long-term efficacy of propafenone 450mg daily. RESULTS: The electrophysiologic mechanisms of PSVT were AV nodal reentry in 6 patients and AV reentry in 9 patients. During the electrophysiologic study, propafenone prolonged AH, HV and PR intervals significantly(p<0.05), but did not change the corrected SNRT, SACT, and the ERP of atrium, ventricle, AV node and accessory pathway(AP) significantly. The anterograde and retrograde 1:1 conduction capacity of AV node and AP seemed to decrease. Complete block of anterograde conduction over the AP was noted in 2 of 3 patients with manifest WPW syndrome and complete block of retrograde conduction was noted over the AV node in 1 patient with AV nodal reentry and over the AP in 1 patient with AV reentry. Propafenone was effective in 3 of 6 patients with AVNRT and 7 of 9 patients with AVRT. During long term administration for 3 to 11 months in 10 patients with short-term efficacy of propafenone, 7 patients did not report any episode of symptomatic tachycardia and 3 patients reported less frequent palpitation. There were no side effects during short-and long-term follow up except 2 patients with mild indigestion. CONCLUSIONS: Propafenone seems to be a safe, well tolerated and effective drug for short and long-term therapy of patients with PSVT, especially of orthodromic AV reentry.
Atrioventricular Node ; Dyspepsia ; Follow-Up Studies ; Humans ; Propafenone* ; Tachycardia ; Tachycardia, Supraventricular* ; Wolff-Parkinson-White Syndrome

Neuroendocrine pancreatic tumors (NPTs) arise from the pancreatic islet cells and belong to the amine and precursor uptake and decarboxylation (APUD) system. These tumors are rare and account for only 1% to 5% of pancreatic tumor. The pancreas is an extremely uncommon site of neoplasia in children and adolescents. For this reason, our understanding of these tumors is still quite limited. Although the complete surgical resection is the key to successful management of all malignant adolescence pancreatic tumors, the information on the possible role of chemotherapy and radiation in recurrent, unresectable, or metastatic cases is purely anecdotal. The 17-year-old man transferred to our hospital with abnormal ultrasonographic findings. Result of abdominal ultrasonographic examination showed a mass in the upper abdomen. He presented with 6months history of intermittent abdominal pain and vomiting and diarrhea. A computed tomography (CT) scan and magnetic resonance showed a 4.5 x 6 cm mass in the head of the pancreas. An ultrasound-guided core biopsy confirmed an pancreatoblastoma or pancreas islet cell tumor. On operative findings, there was locally advanced, unresectable tumor within the pancreatic head. We report a 17-years-old man patient with non-functional panceratic islet cell carcinoma.
Abdomen ; Abdominal Pain ; Adenoma, Islet Cell ; Adolescent* ; Biopsy ; Carcinoma, Islet Cell ; Child ; Decarboxylation ; Diarrhea ; Drug Therapy ; Head ; Humans ; Islets of Langerhans* ; Pancreas ; Vomiting

No abstract available.
Barium* ; Child* ; Humans ; Intussusception* ; Ultrasonography*