abstract：:Two-dimensional echocardiography was employed to define the natural history of regional wall motion abnormalities in a canine model of acute experimental myocardial infarction. Serial short-axis two-dimensional echocardiograms were recorded in 11 closed chest dogs before coronary occlusion and 10, 30, 60, 180 and 360 ...

journal_title：Journal of the American College of Cardiology

authors： Gillam LD,Franklin TD,Foale RA,Wiske PS,Guyer DE,Hogan RD,Weyman AE

更新日期：1986-06-01 00:00:00

abstract：:Twenty-four hour ambulatory electrocardiographic tape recordings of 30 patients (16 men and 14 women, mean age 42 +/- 17 years) with repetitive monomorphic idiopathic ventricular tachycardia were analyzed using a new computerized system designed to study 15 RR cycles and mean heart rate of the 3 minutes preceding any ...

journal_title：Journal of the American College of Cardiology

authors： Zimmermann M,Maisonblanche P,Cauchemez B,Leclercq JF,Coumel P

更新日期：1986-06-01 00:00:00

abstract：:Doppler echocardiography was performed in 80 consecutive patients (22 men, 58 women), aged 38 +/- 16 years, who had mitral valve prolapse diagnosed by two-dimensional echocardiography. Of the 80 patients, 16 (20%) were asymptomatic and 11 (14%) had a normal physical examination (no click or murmur). The M-mode echocar...

journal_title：Journal of the American College of Cardiology

authors： Panidis IP,McAllister M,Ross J,Mintz GS

更新日期：1986-05-01 00:00:00

abstract：:The antiarrhythmic effects of verapamil, 17-monochloracetylajmaline, mexiletine and amiodarone were compared in 14 patients with chagasic myocarditis. Drugs and placebo were administered orally in the following order: placebo and verapamil, placebo and 17-monochloracetylajmaline, placebo and mexiletine (1 week each) a...

journal_title：Journal of the American College of Cardiology

authors： Haedo AH,Chiale PA,Bandieri JD,Lázzari JO,Elizari MV,Rosenbaum MB

更新日期：1986-05-01 00:00:00

abstract：:Myocardial reperfusion after brief, reversible ischemia is frequently associated with malignant arrhythmias in experimental animals. These observations have been extrapolated to humans despite being restricted to anesthetized, open chest preparations. No data are available regarding the incidence of reperfusion arrhyt...

journal_title：Journal of the American College of Cardiology

authors： Bolli R,Myers ML,Zhu WX,Roberts R

更新日期：1986-05-01 00:00:00

abstract：:A new model for analyzing the major effects of the use of any laser angioplasty system is described. Changes in any of the six major determinants of effect (energy, duration, wavelength, medium, absorption, geometry) can be evaluated. In this report a neodymium: yttrium aluminum garnet (Nd:YAG) laser was used to make ...

journal_title：Journal of the American College of Cardiology

authors： Shelton ME,Hoxworth B,Shelton JA,Virmani R,Friesinger GC

更新日期：1986-04-01 00:00:00

abstract：:Two-dimensional echocardiography can diagnose hypoplastic left heart syndrome. However, with the advent of the possibility of palliative open heart surgery, complete anatomic diagnosis is necessary. The anatomic findings of 15 neonates with hypoplastic left heart syndrome (age 1 to 10 days, mean 4.1) who had two-dimen...

journal_title：Journal of the American College of Cardiology

authors： Bash SE,Huhta JC,Vick GW 3rd,Gutgesell HP,Ott DA

更新日期：1986-03-01 00:00:00

abstract：:The temporal blood flow velocity profile in the descending aorta at the diaphragm was investigated using pulsed Doppler echocardiography in patients with documented coarctation of the aorta and in control patients. The ratio of peak systolic to peak diastolic frequency shift, an angle-independent index of pulsatility ...

journal_title：Journal of the American College of Cardiology

authors： Sanders SP,MacPherson D,Yeager SB

更新日期：1986-03-01 00:00:00

abstract：:The severity of aortic stenosis was evaluated by Doppler echocardiography in 48 adults (mean age 67 years) undergoing cardiac catheterization. Maximal Doppler systolic gradient correlated with peak to peak pressure gradient (r = 0.79, y = 0.63x + 25.2 mm Hg) and mean Doppler gradient correlated with mean pressure grad...

journal_title：Journal of the American College of Cardiology

authors： Otto CM,Pearlman AS,Comess KA,Reamer RP,Janko CL,Huntsman LL

更新日期：1986-03-01 00:00:00

abstract：:Calcium channel blockers and beta-receptor blockers improve symptoms of myocardial ischemia by potentially different mechanisms. Accordingly, combination therapy may entail additive benefits. Twenty-four patients with symptomatic stable effort angina despite full beta-blockade were randomized to a double-blind Latin s...

journal_title：Journal of the American College of Cardiology

authors： Humen DP,O'Brien P,Purves P,Johnson D,Kostuk WJ

更新日期：1986-02-01 00:00:00

abstract：:Sudden death in healthy athletes is uncommon but, when it occurs, the primary mechanism is cardiovascular. The major cause of sudden death in the young athlete is hypertrophic cardiomyopathy or related conditions characterized by left ventricular hypertrophy, aortic rupture due to cystic medial necrosis and congenital...

journal_title：Journal of the American College of Cardiology

authors： Epstein SE,Maron BJ

更新日期：1986-01-01 00:00:00

abstract：:Left ventricular isovolumic relaxation and the relation between relaxation and filling were studied in 90 patients with hypertrophic cardiomyopathy and 29 control subjects using radionuclide angiography. The isovolumic relaxation period was determined automatically on left ventricular time-activity curves as the inter...

journal_title：Journal of the American College of Cardiology

authors： Betocchi S,Bonow RO,Bacharach SL,Rosing DR,Maron BJ,Green MV

更新日期：1986-01-01 00:00:00

abstract：:As a clinical entity atrioventricular (AV) block due to hypothyroidism is rare. Such a case induced by hypothyroidism complicating long-term therapy with amiodarone in a 45 year old woman with pre-excitation is presented. Electrophysiologic data obtained before and during thyroxine replacement therapy showed that hypo...

journal_title：Journal of the American College of Cardiology

authors： Mangiardi L,Gaita F,Brun S,Presbitero P,Nademanee K,Singh BN

更新日期：1986-01-01 00:00:00

abstract：:This study presents follow-up data on 95 patients with transposition of the great arteries who underwent a Mustard intraatrial baffle operation. The patients were followed up serially by means of scalar electrocardiograms and 24 hour Holter monitoring studies. The latter study was effective in documenting abnormal rhy...

journal_title：Journal of the American College of Cardiology

authors： Hayes CJ,Gersony WM

更新日期：1986-01-01 00:00:00

abstract：:Forty-two defibrillating lead systems for the automatic implantable defibrillator were implanted and tested in 41 patients. Two basic lead configurations were used: 1) spring-patch, consisting of a transvenous superior vena cava spring electrode as the anode and an apical or left lateral ventricular patch electrode (e...

journal_title：Journal of the American College of Cardiology

authors： Troup PJ,Chapman PD,Olinger GN,Kleinman LH

更新日期：1985-12-01 00:00:00

abstract：:It has previously been shown that analysis of coronary morphology can separate unstable from stable angina. An eccentric stenosis with a narrow neck or irregular borders, or both, is very common in patients who present with acute unstable angina, whereas it is rare in patients with stable angina. To extend these obser...

journal_title：Journal of the American College of Cardiology

authors： Ambrose JA,Winters SL,Arora RR,Haft JI,Goldstein J,Rentrop KP,Gorlin R,Fuster V

更新日期：1985-12-01 00:00:00

abstract：:Nonsteroid anti-inflammatory drugs are often used to treat myalgias and arthralgias in enteroviral infections, but their effects on acute viral myocarditis are unknown. The effect of the nonsteroidal anti-inflammatory drug, ibuprofen, on acute viral myocarditis was studied in 75 four week old male BALB/c mice infected...

journal_title：Journal of the American College of Cardiology

authors： Costanzo-Nordin MR,Reap EA,O'Connell JB,Robinson JA,Scanlon PJ

更新日期：1985-11-01 00:00:00

abstract：:Ascending (type I) aortic dissection carries a high morbidity and mortality. Proper identification of the proximal origin of the dissection and determination of concomitant aortic valve involvement significantly facilitate surgical repair, which may improve survival. In this case, intraoperative two-dimensional echoca...

journal_title：Journal of the American College of Cardiology

authors： Goldman ME,Guarino T,Mindich BP

更新日期：1985-11-01 00:00:00

abstract：:Right ventricular diastolic collapse has been demonstrated to be a sensitive and specific sign of cardiac tamponade. Because the shape and position of the right ventricular wall are related to the relative pressures within the pericardial space and the right ventricular chamber, the usefulness of right ventricular dia...

journal_title：Journal of the American College of Cardiology

authors： Klopfenstein HS,Cogswell TL,Bernath GA,Wann LS,Tipton RK,Hoffmann RG,Brooks HL

更新日期：1985-11-01 00:00:00

abstract：:During careful studies of the human cardiac conduction system the anatomy of the crista supraventricularis is an inescapable concomitant demonstration. For the purpose of this report the observations from about 1,000 human hearts were combined with special additional studies of 75 human hearts (50 adults, 25 infants),...

journal_title：Journal of the American College of Cardiology

authors： James TN

更新日期：1985-11-01 00:00:00

abstract：:This is a report of successful dilation of stenosis of the common trunk in a case of total anomalous pulmonary vein return into the left superior vena cava in a 3 month old infant. Percutaneous angioplasty was performed with a 6 mm diameter balloon catheter. Right ventricular systolic pressure decreased from 96 to 60 ...

journal_title：Journal of the American College of Cardiology

authors： Rey C,Marache P,Francart C,Dupuis C

更新日期：1985-10-01 00:00:00

abstract：:A patient is described who underwent atrial septal defect repair at age 12 and presented 16 years later with angina. Coronary angiography revealed a right coronary artery to pulmonary artery fistula that had developed at the site of the previous thoracotomy. This is the first report of an acquired fistula of this type...

journal_title：Journal of the American College of Cardiology

authors： Rothschild AH,Adatepe MH,Magovern GJ,Rothschild MA,Joyner CR

更新日期：1985-10-01 00:00:00

abstract：:Sustained ventricular tachycardia or fibrillation that develops during the early recovery period after acute myocardial infarction is a common clinical problem whose management remains controversial. Fifty-three patients who survived an initial episode of sustained ventricular tachycardia or fibrillation occurring bet...

journal_title：Journal of the American College of Cardiology

authors： DiMarco JP,Lerman BB,Kron IL,Sellers TD

更新日期：1985-10-01 00:00:00

abstract：:The efficacy of verapamil and lidocaine for treating ischemia-induced arrhythmias was determined in a conscious canine model with a previous myocardial infarction remote from the ischemic area. Temporary (up to 5.5 minutes) occlusion of the circumflex coronary artery was made in eight conscious dogs that had sustained...

journal_title：Journal of the American College of Cardiology

authors： Temesy-Armos PN,Legenza M,Southworth SR,Hoffman BF

更新日期：1985-09-01 00:00:00

abstract：:To elucidate the effects of ventricular asynchrony with or without myocardial ischemia on the time constant of left ventricular pressure decay and asymptote, that is, the level to which pressure would decrease if isovolumic pressure decrease continued infinitely, left ventriculography and pressure measurements were in...

journal_title：Journal of the American College of Cardiology

authors： Takeuchi M,Fujitani K,Kurogane K,Bai HT,Toda C,Yamasaki T,Fukuzaki H

更新日期：1985-09-01 00:00:00

abstract：:Twelve cardiac electrophysiology centers conducted an open label prospective trial of bethanidine sulfate, an oral bretylium analog, for the prevention of ventricular tachyarrhythmias during programmed electrical stimulation. The study group included 56 patients (44 men, 12 women; mean age 60 years; 55 with structural...

journal_title：Journal of the American College of Cardiology

authors： Teichman SL,Waspe LE,Matos JA,Kim SG,Fisher JD

更新日期：1985-09-01 00:00:00

abstract：:Acute and chronic hemodynamic and clinical responses to milrinone, a new oral inotrope-vasodilator agent, were evaluated prospectively in 37 patients with severe congestive heart failure. The majority of patients (n = 31) had not responded to prior vasodilator therapy, with a substantial number (n = 8) requiring intra...

journal_title：Journal of the American College of Cardiology

authors： Simonton CA,Chatterjee K,Cody RJ,Kubo SH,Leonard D,Daly P,Rutman H

更新日期：1985-08-01 00:00:00

abstract：:The safety and efficacy of a new clinical synchronized diastolic retroperfusion mechanical pump and autoinflatable balloon catheter was studied in 10 dogs during and after 6 hours of left anterior descending coronary artery occlusion. Eight other dogs served as the untreated control group. Infarct size measured by tri...

journal_title：Journal of the American College of Cardiology

authors： Drury JK,Yamazaki S,Fishbein MC,Meerbaum S,Corday E

更新日期：1985-08-01 00:00:00

abstract：:The mechanism of electrocardiographic ST segment changes during acute coronary occlusion was evaluated in 28 consecutive patients with single vessel coronary artery disease undergoing coronary angioplasty. Patients were continuously monitored with a six lead electrocardiogram. Twenty-three patients showed ST changes i...

journal_title：Journal of the American College of Cardiology

authors： Brymer JF,Khaja F,Marzilli M,Goldstein S

更新日期：1985-07-01 00:00:00

abstract：:The sensitivity of the commonly used stress tests for the diagnosis of coronary artery disease was analyzed in 46 patients with significant occlusion (greater than or equal to 70% luminal diameter obstruction) of only one major coronary artery and no prior myocardial infarction. In all patients, thallium-201 perfusion...

journal_title：Journal of the American College of Cardiology

authors： Port SC,Oshima M,Ray G,McNamee P,Schmidt DH

更新日期：1985-07-01 00:00:00

abstract：:A 68 year old man had a diaphragmatic myocardial infarction and 9 months later was admitted with severe congestive heart failure (functional class IV). Cardiac catheterization demonstrated a postinfarction pseudoaneurysm. Because of a massive left to right shunt (pulmonary to systemic flow ratio = 2.7), concomitant ru...

journal_title：Journal of the American College of Cardiology

authors： Chiariello L,Macrina F,Caretta Q,Cattolica FS,Papalia U,Marino B

更新日期：1985-07-01 00:00:00

abstract：:The purpose of this study was to determine whether trains of subthreshold high frequency conditioning stimuli (333 Hz, 1 ms duration, 2 ms interval) delivered to the canine ventricle inhibited the response to a premature stimulus (S2) more effectively than did a single subthreshold conditioning stimulus. It was found ...

journal_title：Journal of the American College of Cardiology

authors： Skale BT,Kallok MJ,Prystowsky EN,Gill RM,Zipes DP

更新日期：1985-07-01 00:00:00

abstract：:The sequential univalent reduction of oxygen gives rise to very reactive intermediate products including superoxide anion radical, hydrogen peroxide and free hydroxyl radicals. Normally, the tissue concentration of these intermediate products of oxygen is severely limited; however, if oxygen free radicals are produced...

journal_title：Journal of the American College of Cardiology

authors： Hammond B,Hess ML

更新日期：1985-07-01 00:00:00

abstract：:MDL 17,043, an inotropic and vasodilator drug, is believed to have beneficial effects in patients with heart failure. Its short- and long-term hemodynamic and cardiopulmonary effects were studied in 10 patients with New York Heart Association functional class III heart failure who were maintained on digitalis and diur...

journal_title：Journal of the American College of Cardiology

authors： Rubin SA,Tabak L

更新日期：1985-06-01 00:00:00

abstract：:Almost 90% of patients resuscitated from out of hospital cardiac arrest have coronary heart disease and can be categorized in one of three groups: acute myocardial infarction, ischemic event or primary arrhythmic event. The patients who have acute myocardial infarction have the best prognosis, and those with primary a...

journal_title：Journal of the American College of Cardiology

authors： Bigger JT Jr

更新日期：1985-06-01 00:00:00

abstract：:The effects of metoprolol treatment in patients surviving acute myocardial infarction have been investigated in a double-blind randomized study. The patients were stratified according to age, infarct size and type of ventricular arrhythmias before administration of metoprolol, 100 mg twice daily (n = 154), or placebo ...

journal_title：Journal of the American College of Cardiology

authors： Olsson G,Rehnqvist N,Sjögren A,Erhardt L,Lundman T

更新日期：1985-06-01 00:00:00

abstract：:This review of sudden death in patients previously seen in a pediatric cardiology clinic attempts to identify factors that may have been predictive of sudden death. The denominator for these factors is unknown. For example, the number of patients with these possible risk factors who have well tolerated arrhythmias is ...

journal_title：Journal of the American College of Cardiology

authors： Garson A Jr,McNamara DG

更新日期：1985-06-01 00:00:00

abstract：:Left ventricular thrombus complicating myocardial infarction was diagnosed by two-dimensional echocardiography in 119 patients. The infarct site was anterior in 98 patients and inferior in 11. Systemic embolism occurred in 26 patients (stroke in 18, lower limb embolism in 7 and mesenteric embolism in 1). A protruding ...

journal_title：Journal of the American College of Cardiology

authors： Visser CA,Kan G,Meltzer RS,Dunning AJ,Roelandt J

更新日期：1985-06-01 00:00:00

abstract：:Products of ischemic metabolism can make a major contribution to electrical instability of the heart. In particular, enhanced extracellular potassium slows conduction, thereby predisposing to reentrant circuits, especially when levels of cyclic adenosine monophosphate (AMP) increase in the early ischemic period. Other...

journal_title：Journal of the American College of Cardiology

authors： Opie LH

更新日期：1985-06-01 00:00:00

abstract：:Though he received his medical education in Edinburgh, William Withering was born and bred, and conducted his practice, in the Midlands of England, where he collaborated closely with medical and nonmedical colleagues who were pioneers of intellectual thought during the industrial revolution. Because of his profound bo...

journal_title：Journal of the American College of Cardiology

authors： Krikler DM

更新日期：1985-05-01 00:00:00