abstract：:When acute myocardial infarction occurs in patients with hypertension and left ventricular hypertrophy (LVH), the incidence of sudden cardiac death increases markedly. Possible explanations include increased size of the occluded vascular bed secondary to more extensive atherosclerotic coronary vascular disease in the ...

journal_title：Circulation

authors： Koyanagi S,Eastham C,Marcus ML

更新日期：1982-06-01 00:00:00

abstract：:The results of coronary bypass 5-10 years after operation at the Baylor College of Medicine are reported. The late results demonstrate that good relief of symptoms of angina pectoris persisted in 89% of patients at 10 years of follow-up. An overall annual attrition rate of 3% has been fairly constant through 10 years ...

journal_title：Circulation

authors： Lawrie GM,Morris GC Jr

更新日期：1982-06-01 00:00:00

abstract：:Intermittent aortic root infusion of a cold solution containing either potassium chloride (KCl) or diltiazem was performed in 32 dogs during a 2-hour aortic clamping. Half of the dogs in each group had a critical stenosis created on the circumflex artery before cardiopulmonary bypass. Global left ventricular (LV) func...

journal_title：Circulation

authors： Vouhé PR,Hélias J,Robert P,Grondin CM

更新日期：1982-06-01 00:00:00

abstract：:Expansion (regional dilatation and thinning) of acutely infarcted myocardium in man has been shown to correlate with overall cardiac dilatation and rupture. We studied gross and histopathologic features and the time course of expansion in rats. Infarcts were produced in 84 rats by ligation of the left coronary artery ...

journal_title：Circulation

authors： Hochman JS,Bulkley BH

更新日期：1982-06-01 00:00:00

abstract：:To investigate whether a fixed external reference system should be used to most accurately describe regional left ventricular wall motion, we used vectors to analyze a simple model of ventricular contraction. If measured in a fixed external reference system, motion of implanted radiopaque midwall markers may contain t...

journal_title：Circulation

authors： Clayton PD,Jeppson GM,Klausner SC

更新日期：1982-06-01 00:00:00

abstract：:We compared the effects of a cardioselective beta-adrenergic blocking drug, metoprolol, with a nonselective beta-adrenergic blocker, propranolol, on the response of 10 normal men to dynamic treadmill exercise. The volunteers underwent a standard graded exercise test to exhaustion while receiving placebo; propranolol, ...

journal_title：Circulation

authors： Sklar J,Johnston GD,Overlie P,Gerber JG,Brammell HL,Gal J,Nies AS

更新日期：1982-05-01 00:00:00

abstract：:A new two-dimensional echocardiographic technique was developed to detect peripheral right coronary aneurysms in Kawasaki disease. Because the main stem of the right coronary artery runs along the tricuspid valve ring and the posterior interventricular groove, these regions were examined for coronary aneurysms using t...

journal_title：Circulation

authors： Yoshida H,Maeda T,Funabashi T,Nakaya S,Takabatake S,Taniguchi N

更新日期：1982-05-01 00:00:00

abstract：:The first stage of a repair of pulmonary atresia with intact ventricular septum (type I) was attempted in a 2-day-old infant. At surgery, decompression of the hypertensive small right ventricle was followed by a sudden loss of myocardial contractility and death. Postmortem examination revealed a fistula with a large o...

journal_title：Circulation

authors： O'Connor WN,Cottrill CM,Johnson GL,Noonan JA,Todd EP

更新日期：1982-04-01 00:00:00

abstract：:The present study was performed to determine whether positron emission tomography (PET) performed after i.v. 11C-palmitate permits detection and characterization of nontransmural myocardial infarction. PET was performed after the i.v. injection of 11C-palmitate in 10 normal subjects, 24 patients with initial nontransm...

journal_title：Circulation

authors： Geltman EM,Biello D,Welch MJ,Ter-Pogossian MM,Roberts R,Sobel BE

更新日期：1982-04-01 00:00:00

abstract：:To assess whether gross pathologic differences exist between hearts with left bundle branch block (LBBB) and left-axis deviation (LAXD) and those with LBBB and a normal frontal plane axis, we examined 70 hearts with LBBB in a series of 1410 sequential dissections (5%). Thirty-two hearts had LAXD and 34 had normal axes...

journal_title：Circulation

authors： Havelda CJ,Sohi GS,Flowers NC,Horan LG

更新日期：1982-03-01 00:00:00

abstract：:A lack in prostacyclin (PGI2) production due to atherosclerosis may play a role in the pathophysiology of some of the clinical manifestations of ischemic heart disease and in particular, of coronary vasospasm. We therefore evaluated the effects of i.v. PGI2 in nine patients with variant angina and six normal volunteer...

journal_title：Circulation

authors： Chierchia S,Patrono C,Crea F,Ciabattoni G,De Caterina R,Cinotti GA,Distante A,Maseri A

更新日期：1982-03-01 00:00:00

abstract：:Left ventricular function was compared in 18 normal sedentary controls (mean age 28 years, range 22 - 34 years) and nine endurance-trained athletes (mean age 19 years, range 15 - 25 years) at rest and during supine bicycle exercise. Gated radionuclide angiocardiograms were performed at rest and at each level of graded...

journal_title：Circulation

authors： Bar-Shlomo BZ,Druck MN,Morch JE,Jablonsky G,Hilton JD,Feiglin DH,McLaughlin PR

更新日期：1982-03-01 00:00:00

abstract：:Real-time cross-sectional echocardiographic studies of the main coronary arteries were performed in 20 normal subjects, 12 patients with patent ductus arteriosus and 14 patients with coronary artery fistula in whom the diagnosis was established by angiography. In 12 patients, the coronary artery that formed the fistul...

journal_title：Circulation

authors： Yoshikawa J,Katao H,Yanagihara K,Takagi Y,Okumachi F,Yoshida K,Tomita Y,Fukaya T,Baba K

更新日期：1982-03-01 00:00:00

abstract：:This paper provides guidelines for the optimal, rather than minimal, performance of ultrasonic examination of the heart for current clinical applications using conventional echocardiographic equipment. Since the original report of this Inter-Society Commission on Heart Disease Resources Committee in 1975, M-mode echoc...

journal_title：Circulation

authors： Popp RL,Fortuin NJ,Johnson ML,Kisslo JA Jr

更新日期：1982-02-01 00:00:00

abstract：:To define the role of portable two-dimensional echocardiography (2-D echo) in the immediate diagnosis of acute chest pain syndrome, 80 consecutive patients were studied. Adequate 2-D echo studies were obtained in 65 (81%). Thirty-three patients had clinical evidence of transmural or nontransmural acute myocardial infa...

journal_title：Circulation

authors： Horowitz RS,Morganroth J,Parrotto C,Chen CC,Soffer J,Pauletto FJ

更新日期：1982-02-01 00:00:00

abstract：:The long-term results of 414 patients who underwent repair of tetralogy of Fallot between 1967 and 1977 were studied and correlated with the results of others. There were nine late deaths (8-year actuarial survival 95.8%). Six of the deaths wee directly related to the malformation or its treatment. Eight patients (2.4...

journal_title：Circulation

authors： Katz NM,Blackstone EH,Kirklin JW,Pacifico AD,Bargeron LM Jr

更新日期：1982-02-01 00:00:00

abstract：:Two patients with supraventricular parasystole (one atrioventricular and one auricular) are reported. In both patients, reentrant extrasystoles appeared to occur as the result of Mobitz type I second-degree entrance block. We believe that when a sinus impulse fell soon after the absolute refractory period of the pathw...

journal_title：Circulation

authors： Kinoshita S,Nakagawa K,Kato N,Nishino T,Tanabe Y

更新日期：1982-01-01 00:00:00

abstract：:Diseases that cause symptoms incompletely relieved by available modes of treatment stimulate search for new therapies. Chronic disease processes, in which interventions are palliative rather than curative provide a particular challenge in determining the value of therapeutic intervention. Management of patients with a...

journal_title：Circulation

authors： Parisi AF,Strauss WE,McIntyre KM,Sasahara AA

更新日期：1982-01-01 00:00:00

abstract：:The patterns of aortic and tricuspid valve motion in 50 patients with mitral valve prolapse were analyzed by wide-angle, phased-array, two-dimensional echocardiography. Twelve patients (24%) had redundant aortic leaflets bulging into the left ventricular outflow tract during diastole. Eight of 12 patients had aortic r...

journal_title：Circulation

authors： Ogawa S,Hayashi J,Sasaki H,Tani M,Akaishi M,Mitamura H,Sano M,Hoshino T,Handa S,Nakamura Y

更新日期：1982-01-01 00:00:00

abstract：:We assessed factors during an initial episode of ventricular fibrillation that may be predictive of recurrence. Of 141 consecutive patients with acute ischemic heart disease who survived an initial episode of ventricular fibrillation, 41 (29%) had recurrent ventricular fibrillation during hospitalization. The incidenc...

journal_title：Circulation

authors： Logan KR,McIlwaine WJ,Adgey AA,Pantridge JF

更新日期：1981-12-01 00:00:00

abstract：:Many basic concepts of cardiac output and arterial pressure control have changed considerably in the past few years. In general, each tissue controls its own local resistance and blood flow regardless of the level of arterial pressure; the sum of the local flows then determines the venous return and cardiac output. Ho...

journal_title：Circulation

authors： Guyton AC

更新日期：1981-12-01 00:00:00

abstract：:Prenalterol, a beta-adrenergic agonist, was given to nine patients with angiographically proved coronary artery disease. Subjects were studied during chronic beta-adrenergic blockade. The adequacy of blockade was assessed by the exercise heart rate response and by plasma concentrations of blocking agents. After increm...

journal_title：Circulation

authors： Shiu MF,Ireland MA,Littler WA

更新日期：1981-12-01 00:00:00

abstract：:We studied the inferior vena cava (IVC) as an index of right-heart function in 111 patients. A two-dimensional echocardiographic sector was used to visualize the IVC, and its M-mode cursor was used to generate a time-motion record of the IVC size and pulsation. Normal subjects had a small presystolic A wave (less than...

journal_title：Circulation

authors： Mintz GS,Kotler MN,Parry WR,Iskandrian AS,Kane SA

更新日期：1981-11-01 00:00:00

abstract：:Regional myocardial function and blood flow were determined for 48 hours after permanent occlusion of the left circumflex coronary artery in conscious swine. Systolic wall thickening and end-diastolic wall thickness (EDWTh) were correlated with regional myocardial flow (RMBF) at 15 minutes, 24 and 48 hours after occlu...

journal_title：Circulation

authors： Savage RM,Guth B,White FC,Hagan AD,Bloor CM

更新日期：1981-10-01 00:00:00

abstract：:We studied 10 obese volunteers, mean age 36.5 +/- 10.3 years, who weighed 123.56 +/- 28.7 g and were 69.96 +/- 22.5 kg overweight. The subjects did not have diabetes, arterial hypertension or signs of cardiac and respiratory failure or disease and all underwent right- and left-heart catheterization. cardiac output and...

journal_title：Circulation

authors： de Divitiis O,Fazio S,Petitto M,Maddalena G,Contaldo F,Mancini M

更新日期：1981-09-01 00:00:00

abstract：:The initial myocardial uptake of thallium-201 depends on myocardial blood flow distribution. The phenomenon of delayed thallium redistribution after transiently or chronically altered myocardial perfusion has been described. The net myocardial accumulation of thallium-201 after injection depends upon the net balance b...

journal_title：Circulation

authors： Grunwald AM,Watson DD,Holzgrefe HH Jr,Irving JF,Beller GA

更新日期：1981-09-01 00:00:00

abstract：:Verapamil is extremely effective in the treatment of patients with hypertrophic cardiomyopathy. However, the basic physiologic actions of the drug may lead to serious adverse effects. An appreciation of this and an understanding of when these adverse effects are most likely to occur will minimize the potential of vera...

journal_title：Circulation

authors： Epstein SE,Rosing DR

更新日期：1981-09-01 00:00:00

abstract：:We determined the pharmacokinetics, efficacy and therapeutic plasma concentration of encainide, a new antiarrhythmic drug that affects His-Purkinje conduction but not ventricular refractoriness. Nine patients with frequent and complex premature ventricular complexes were studied in a 3-day double-blind protocol. Each ...

journal_title：Circulation

authors： Winkle RA,Peters F,Kates RE,Tucker C,Harrison DC

更新日期：1981-08-01 00:00:00

abstract：:The acute coronary hemodynamic and metabolic effects of intravenous dipyridamole were studied in 13 patients. Total left ventricular (LV), anterior (supplied by the left anterior descending coronary artery) and inferior (supplied by circumflex and right coronary arteries) regional flows and metabolic responses were as...

journal_title：Circulation

authors： Feldman RL,Nichols WW,Pepine CJ,Conti CR

更新日期：1981-08-01 00:00:00

abstract：:Contracture and collapse often complicate dissection and excision of blood vessels for grafting. Subsequent forceful redilatation and leak checking with cold saline almost always lead to partial or total denudation of endothelium, which increases the risk of early occlusion by thrombi or late occlusion by fibrocellula...

journal_title：Circulation

authors： Haudenschild C,Gould KE,Quist WC,LoGerfo FW

更新日期：1981-08-01 00:00:00

abstract：:From 1962-1977, 99 patients, mean age 65 +/- 0.5 years (range 60-81 years) underwent valve replacement for severe calcific aortic valve stenosis. Ninety-three percent of the patients were in New York Heart Association functional class III or IV. The aortic valve gradient was 76 +/- 3 mm Hg and the aortic valve area in...

journal_title：Circulation

authors： Murphy ES,Lawson RM,Starr A,Rahimtoola SH

更新日期：1981-08-01 00:00:00

abstract：:While continuing a study of immunologic and virologic aspects of the postpericardiotomy syndrome (PPS) in infants and children, we undertook a companion study in adults. Whereas the incidence in 119 children was 27.8%, as is usual for our hospital, the incidence in 142 adults was 17.6%. Most of the operations (95 of 1...

journal_title：Circulation

authors： Engle MA,Gay WA Jr,McCabe J,Longo E,Johnson D,Senterfit LB,Zabriskie JB

更新日期：1981-08-01 00:00:00

abstract：:In patients treated with sulfinpyrazone, an apparent reduction in the incidence of sudden death and presumed ventricular fibrillation has been reported. Using an intact animal model without microcirculatory thrombosis, we studied the effects of sulfinpyrazone on ischemic myocardium in 58 anesthetized dogs divided into...

journal_title：Circulation

authors： Moschos CB,Escobinas AJ,Jorgensen OB Jr,Regan TJ

更新日期：1981-07-01 00:00:00

abstract：:Exit block from a parasystolic focus is recognized when automatic discharges fail to become manifest during the excitable phase of the ventricular cycle. In the present study, an apparently complete exit block and a persistently concealed ventricular parasystole (VP) resulted from an exit refractory period (ExRP) long...

journal_title：Circulation

authors： Nau GJ,Aldariz AE,Acunzo RS,Chiale PA,Elizari MV,Rosenbaum MB

更新日期：1981-07-01 00:00:00

abstract：:Fifty patients who presented with angina pectoris were studied to examine the disturbances of regional myocardial perfusion during stress. Each patient underwent 16-point precordial mapping of the ECG during an exercise test, and coronary and left ventricular angiography. Regional myocardial perfusion was assessed usi...

journal_title：Circulation

authors： Selwyn AP,Forse G,Fox K,Jonathan A,Steiner R

更新日期：1981-07-01 00:00:00

abstract：:The linearity and sensitivity of the end-systolic pressure-volume (P-Ves) relation to the inotropic state of the left ventricle were investigated in 11 patients with coronary heart disease and one patient with congestive cardiomyopathy. To minimize autonomic reflex responses, propranolol, 0.15 mg/kg, and atropine, 1 m...

journal_title：Circulation

authors： Mehmel HC,Stockins B,Ruffmann K,von Olshausen K,Schuler G,Kübler W

更新日期：1981-06-01 00:00:00

abstract：:To define the prevalence, frequency and characteristics of premature ventricular complexes (PVCs) in adults free of recognizable heart disease, we performed 24-hour ambulatory electrocardiography on 101 subjects (51 men and 50 women, mean age 48.8 years) in whom physical examination, chest x-ray, ECG, echocardiogram, ...

journal_title：Circulation

authors： Kostis JB,McCrone K,Moreyra AE,Gotzoyannis S,Aglitz NM,Natarajan N,Kuo PT

更新日期：1981-06-01 00:00:00

abstract：:Numerous criteria for the diagnosis of inferior wall myocardial infarction by electrocardiogram (ECG) and vectorcardiogram (VCG) have been published, but they have not been subjected to a systematic, independent evaluation. Accordingly, we studied 146 patients undergoing cardiac catheterization; 63 were normal and 83 ...

journal_title：Circulation

authors： Hurd HP 2nd,Starling MR,Crawford MH,Dlabal PW,O'Rourke RA

更新日期：1981-05-01 00:00:00

abstract：:Contrast M-mode and two-dimensional ultrasonography of the inferior vena cava were performed in 65 patients with various acquired and congenital cardiac disorders. After saline was injected into a peripheral arm vein, the inferior vena cava was visualized by both methods in 60 patients (92%). The M-mode approach was b...

journal_title：Circulation

authors： Wise NK,Myers S,Fraker TD,Stewart JA,Kisslo JA

更新日期：1981-05-01 00:00:00

abstract：:The quantitative approaches to the assessment of regional left ventricular (LV) function described in the preceding paper were applied in a well-defined population of patients with coronary artery disease. Two groups were chosen by electrocardiographic and angiographic criteria: group 1 had infarction and regional wal...

journal_title：Circulation

authors： Parisi AF,Moynihan PF,Folland ED,Feldman CL

更新日期：1981-04-01 00:00:00