abstract：:Long-term variation in the frequency of myocardial ischemia during daily activity in patients with coronary artery disease who do not experience symptomatic changes has not been documented. Because at one point in time, the magnitude of such ischemia is strongly related to the ischemic threshold measured during exerci...

journal_title：Journal of the American College of Cardiology

authors： Panza JA,Quyyumi AA,Diodati JG,Callahan TS,Bonow RO,Epstein SE

更新日期：1992-03-01 00:00:00

abstract：:The goal of this study was to assess fibrinolytic activity after vessel wall injury and to correlate changes in fibrinolytic activity with angiographic and histologic findings. Accordingly, in 18 atherosclerotic rabbits, vessel wall injury was produced by means of iliac artery balloon angioplasty (the injury group), w...

journal_title：Journal of the American College of Cardiology

authors： Shi Y,Nardone D,Hernandez-Martinez A,Walinsky P,Bjornsson TD,Zalewski A

更新日期：1992-02-01 00:00:00

abstract：:Seventy-four patients with chronic stable mild angina, mild coronary artery disease (83% had one- or two-vessel disease) and normal left ventricular function were studied to measure the response of treadmill exercise performance and painful and silent ischemia in the ambulatory setting to randomly assigned treatment w...

journal_title：Journal of the American College of Cardiology

authors： Kawanishi DT,Reid CL,Morrison EC,Rahimtoola SH

更新日期：1992-02-01 00:00:00

abstract：:To test the value of acceleration flow signals proximal to the leaking orifice in assessing the severity of prosthetic mitral valve regurgitation, 39 consecutive patients undergoing left ventriculography were examined by Doppler color flow imaging. Acceleration flow signals proximal to the regurgitant orifice were det...

journal_title：Journal of the American College of Cardiology

authors： Yoshida K,Yoshikawa J,Akasaka T,Nishigami K,Minagoe S

更新日期：1992-02-01 00:00:00

abstract：:Restenosis after coronary angioplasty is the single complication that most limits this revascularization procedure in clinical practice. The process is largely unpredictable and the lesion-related factors predisposing to restenosis are poorly understood, with little consensus in published reports. In this study using ...

journal_title：Journal of the American College of Cardiology

authors： Beatt KJ,Serruys PW,Luijten HE,Rensing BJ,Suryapranata H,de Feyter P,van den Brand M,Laarman GJ,Roelandt J

更新日期：1992-02-01 00:00:00

abstract：:To compare the effects of isolated right ventricular pressure and volume overload on left ventricular diastolic geometry and filling, 11 patients with primary pulmonary hypertension, 11 patients with severe tricuspid regurgitation due to tricuspid valve resection and 11 normal subjects were studied with use of Doppler...

journal_title：Journal of the American College of Cardiology

authors： Louie EK,Rich S,Levitsky S,Brundage BH

更新日期：1992-01-01 00:00:00

abstract：:The hypothesis that oils derived from the flesh of fish and marine mammals inhibit the atherosclerotic process is critically reviewed. Populations consuming a diet rich in fish have low rates of coronary heart disease. Dietary fish oil is associated with changes in serum lipids, prostaglandin and leukotriene metabolis...

journal_title：Journal of the American College of Cardiology

authors： Israel DH,Gorlin R

更新日期：1992-01-01 00:00:00

abstract：:The aim of this investigation was to determine the difference in accuracy between two frequently published noninvasive indicators of severity of coronary artery disease (exercise-induced ST segment depression and heart rate-adjusted ST depression [ST/HR index]). The study was designed as a survey of consecutive patien...

journal_title：Journal of the American College of Cardiology

authors： Bobbio M,Detrano R,Schmid JJ,Janosi A,Righetti A,Pfisterer M,Steinbrunn W,Guppy KH,Abi-Mansour P,Deckers JW

更新日期：1992-01-01 00:00:00

abstract：:Hemodynamic stress testing was performed in four calves with a chronically implanted left ventricular assist device consisting of a double-valved pump interposed between the left ventricular apex and the descending thoracic aorta. The device was powered either pneumatically (n = 1) or with a transcutaneous energy tran...

journal_title：Journal of the American College of Cardiology

authors： McKay RG,Penny WF,Wyman RM,Clay W,Carr JG,Bernhard WF,Grossman W

更新日期：1991-12-01 00:00:00

abstract：:The ventricular rate and percent of pre-excited QRS complexes during atrial fibrillation were compared in two groups of patients with the Wolff-Parkinson-White syndrome. Group A consisted of 22 patients whose anterograde effective refractory period of the accessory pathway was longer than that of the atrioventricular ...

journal_title：Journal of the American College of Cardiology

authors： Fujimura O,Kuo CS,Smith BA

更新日期：1991-12-01 00:00:00

abstract：:The incidence of bacteremia related to transesophageal echocardiography was studied in 140 consecutive patients (71 women and 69 men with a mean age of 53.7 +/- 15 years). Thirty-four patients had one or more prosthetic heart valves. Blood cultures were obtained from each patient through separate venipuncture sites im...

journal_title：Journal of the American College of Cardiology

authors： Melendez LJ,Chan KL,Cheung PK,Sochowski RA,Wong S,Austin TW

更新日期：1991-12-01 00:00:00

abstract：:Both activation of platelets and elevation of plasminogen activator inhibitor type 1 (PAI-1) activity in plasma have been associated with acute myocardial infarction. Growth factors from platelet alpha-granules have been shown to increase PAI-1 synthesis in liver and endothelial cells in culture. The present study was...

journal_title：Journal of the American College of Cardiology

authors： Fujii S,Abendschein DR,Sobel BE

更新日期：1991-11-15 00:00:00

abstract：:To assess the effect of heart rate adjustment of the magnitude of the ST integral (ST-HR integral) on exercise test performance, the exercise electrocardiogram (ECG) of 50 clinically normal subjects and 100 patients with known or suspected coronary artery disease was analyzed. At matched specificity of 96% with standa...

journal_title：Journal of the American College of Cardiology

authors： Okin PM,Bergman G,Kligfield P

更新日期：1991-11-15 00:00:00

abstract：:To determine whether long-term blood pressure levels correlate with left ventricular mass, echocardiographic measurements were performed in 152 men and 299 women who were participants in the Framingham Heart Study. All subjects were free of obesity and cardiovascular and pulmonary disease, were not taking antihyperten...

journal_title：Journal of the American College of Cardiology

authors： Lauer MS,Anderson KM,Levy D

更新日期：1991-11-01 00:00:00

abstract：:Forty-seven patients with primary pulmonary hypertension were evaluated with a dose titration protocol utilizing nifedipine (20 mg orally) or diltiazem (60 mg orally) given every hour until maximal effectiveness was achieved. Of the patients tested, 15 (32%) had a greater than 20% reduction in pulmonary artery pressur...

journal_title：Journal of the American College of Cardiology

authors： Rich S,Kaufmann E

更新日期：1991-11-01 00:00:00

abstract：:Twenty-four patients with restrictive cardiomyopathy were identified at St. Thomas' Hospital during a 17-year period. All had endomyocardial biopsy, but in two patients the biopsy specimens were small and nondiagnostic. Seven patients had amyloidosis and five had other specific heart muscle diseases. The remaining 10 ...

journal_title：Journal of the American College of Cardiology

authors： Katritsis D,Wilmshurst PT,Wendon JA,Davies MJ,Webb-Peploe MM

更新日期：1991-11-01 00:00:00

abstract：:Antiarrhythmic drugs prolong the effective refractory period and depress conduction. To determine the exact role played by these two electrophysiologic effects in the termination of reentry, the effects of disopyramide, flecainide, propafenone and E-4031, a new class III drug, were examined in a canine model of atrial...

journal_title：Journal of the American College of Cardiology

authors： Inoue H,Yamashita T,Nozaki A,Sugimoto T

更新日期：1991-10-01 00:00:00

abstract：:Ultrafast computed tomography has been reported to be an accurate method of measuring left ventricular mass in dogs. To assess the interstudy, intraobserver and interobserver variability of left ventricular myocardial mass measurements in humans, left ventricular myocardial volume was measured three times within 24 h ...

journal_title：Journal of the American College of Cardiology

authors： Roig E,Georgiou D,Chomka EV,Wolfkiel C,LoGalbo-Zak C,Rich S,Brundage BH

更新日期：1991-10-01 00:00:00

abstract：:Nuclear magnetic resonance (NMR) imaging has been shown to accurately portray cardiac anatomy and function. To investigate the potential of NMR imaging for the assessment of coronary stenosis in patients with chest pain, ultrafast NMR imaging in conjunction with a T1 (longitudinal relaxation time) contrast agent was p...

journal_title：Journal of the American College of Cardiology

authors： Manning WJ,Atkinson DJ,Grossman W,Paulin S,Edelman RR

更新日期：1991-10-01 00:00:00

abstract：:With the current trend to performing surgical valvotomy for infantile aortic stenosis without cardiac catheterization, there is a need to develop echocardiographic criteria for adequacy of left ventricular size. The echocardiograms and catheterization data of all 25 infants less than 3 months of age undergoing aortic ...

journal_title：Journal of the American College of Cardiology

authors： Parsons MK,Moreau GA,Graham TP Jr,Johns JA,Boucek RJ Jr

更新日期：1991-10-01 00:00:00

abstract：:Between December 1985 and April 1990, 50 infants with a variety of congenital cardiac lesions other than the hypoplastic left heart syndrome underwent surgical relief of aortic outflow obstruction by creation of a pulmonary artery to aorta anastomosis. The patients were grouped anatomically by ventriculoarterial align...

journal_title：Journal of the American College of Cardiology

authors： Rychik J,Murdison KA,Chin AJ,Norwood WI

更新日期：1991-09-01 00:00:00

abstract：:The value of heart rate variability, ambulatory electrocardiographic (ECG) variables and the signal-averaged ECG in the prediction of arrhythmic events (sudden death or life-threatening ventricular arrhythmias) was assessed before hospital discharge in 416 consecutive survivors of acute myocardial infarction. During t...

journal_title：Journal of the American College of Cardiology

authors： Farrell TG,Bashir Y,Cripps T,Malik M,Poloniecki J,Bennett ED,Ward DE,Camm AJ

更新日期：1991-09-01 00:00:00

abstract：:Myocardial ischemia of short duration (15 to 20 min) produces myocardial "stunning" during reperfusion. The vasoregulatory and contractile status of reperfused myocardium during normal and reduced perfusion pressures is of interest in the treatment of patients with unstable angina. In the present study the effects of ...

journal_title：Journal of the American College of Cardiology

authors： Ito BR,Libraty DH,Engler RL

更新日期：1991-09-01 00:00:00

abstract：:The natural history of aortic regurgitation is incompletely understood in part because of the lack of a simple method to estimate the defect size. A method of determining the effective regurgitant orifice area that combines Doppler catheter and Doppler echocardiographic techniques and is based on the principle of cons...

journal_title：Journal of the American College of Cardiology

authors： Reimold SC,Ganz P,Bittl JA,Thomas JD,Thoreau D,Plappert TJ,Lee RT

更新日期：1991-09-01 00:00:00

abstract：:To date, attempted balloon dilation of stenotic standard Blalock-Taussig shunts has been largely disappointing. It has been suggested that this may be due to the use of balloons of insufficient diameter. Balloon dilation of stenotic Blalock-Taussig shunts was attempted with use of relatively large balloons in five pat...

journal_title：Journal of the American College of Cardiology

authors： Marks LA,Mehta AV,Marangi D

更新日期：1991-08-01 00:00:00

abstract：:Plasma and myocardial tissue concentrations of metoprolol were studied in ischemic and nonischemic areas of 22 pigs after 90 (n = 19) and 16 (n = 3) min of left anterior descending coronary artery occlusion. Group A (n = 6) received simultaneous intravenous metoprolol (0.2 mg/kg body weight) and tritium-labeled (3H)-m...

journal_title：Journal of the American College of Cardiology

authors： Rydén L,Tadokoro H,Sjöquist PO,Regardh C,Kobayashi S,Corday E,Drury JK

更新日期：1991-08-01 00:00:00

abstract：:The maximal exercise capacity of cardiac transplant recipients is reduced compared with that of normal subjects. To determine if this reduced exercise capacity is related to inadequate myocardial perfusion during exercise, myocardial perfusion was measured noninvasively with use of positron emission tomography and nit...

journal_title：Journal of the American College of Cardiology

authors： Krivokapich J,Stevenson LW,Kobashigawa J,Huang SC,Schelbert HR

更新日期：1991-08-01 00:00:00

abstract：:Many patients with hypertrophic cardiomyopathy experience postprandial exacerbation of their symptoms. The vasodilation associated with eating may be deleterious in hypertrophic cardiomyopathy, especially during exercise. To examine the hemodynamic effects of a meal in hypertrophic cardiomyopathy, 11 patients were stu...

journal_title：Journal of the American College of Cardiology

authors： Gilligan DM,Chan WL,Ang EL,Oakley CM

更新日期：1991-08-01 00:00:00

abstract：:The vasomotor response of proximal and distal angiographically normal coronary artery segments was studied in 12 patients with syndrome X, 17 age- and gender-matched patients with chronic stable angina and 10 control subjects with atypical chest pain and a normal coronary arteriogram. Ergonovine (300 micrograms by int...

journal_title：Journal of the American College of Cardiology

authors： Kaski JC,Tousoulis D,Galassi AR,McFadden E,Pereira WI,Crea F,Maseri A

更新日期：1991-07-01 00:00:00

abstract：:Positron emission tomography was used to image blood flow and metabolic tracers in risk zone myocardium after left anterior descending coronary artery occlusion during synchronized coronary venous retroperfusion. Six control and seven intervention open chest dogs had occlusion of the mid left anterior descending coron...

journal_title：Journal of the American College of Cardiology

authors： O'Byrne GT,Nienaber CA,Miyazaki A,Araujo L,Fishbein MC,Corday E,Schelbert HR

更新日期：1991-07-01 00:00:00

abstract：:Sixteen patients with double-outlet right ventricle, aged 1 week to 29 years (median 5 months), were studied with a 1.5 tesla nuclear magnetic resonance (NMR) imaging scanner. Two-dimensional echocardiography was performed in all patients. Thirteen patients underwent angiography, including nine who underwent subsequen...

journal_title：Journal of the American College of Cardiology

authors： Parsons JM,Baker EJ,Anderson RH,Ladusans EJ,Hayes A,Fagg N,Cook A,Qureshi SA,Deverall PB,Maisey MN

更新日期：1991-07-01 00:00:00

abstract：:Nonionic contrast media are suggested to cause increased thromboembolism (in vivo), platelet aggregation and procoagulant effect (in vitro) as compared with ionic contrast media. To study these effects in vivo, 30 consecutive patients undergoing routine angiography were prospectively randomized to three groups of 10 p...

journal_title：Journal of the American College of Cardiology

authors： Arora R,Khandelwal M,Gopal A

更新日期：1991-06-01 00:00:00

abstract：:Thirty-eight patients who had inducible sustained ventricular tachycardia during baseline programmed electrical stimulation underwent electrophysiologic testing after both intravenous and oral administration of procainamide. Each had presented clinically with documented sustained ventricular tachycardia or out of hosp...

journal_title：Journal of the American College of Cardiology

authors： Interian A Jr,Zaman L,Velez-Robinson E,Kozlovskis P,Castellanos A,Myerburg RJ

更新日期：1991-06-01 00:00:00

abstract：:A prehospital computer-interpreted electrocardiogram (ECG) was obtained in 1,189 patients with chest pain of suspected cardiac origin during an ongoing trial of prehospital thrombolytic therapy in acute myocardial infarction. Electrocardiograms were performed by paramedics 1.5 +/- 1.2 h after the onset of symptoms. Of...

journal_title：Journal of the American College of Cardiology

authors： Kudenchuk PJ,Ho MT,Weaver WD,Litwin PE,Martin JS,Eisenberg MS,Hallstrom AP,Cobb LA,Kennedy JW

更新日期：1991-06-01 00:00:00

abstract：:Smooth muscle cell proliferation is central to the process of restenosis. Attempts to inhibit the events leading to this proliferation have met with little success. In addition to its known antithrombotic effects, heparin also has inhibitory effects on smooth muscle cell proliferation. These effects appear to be unrel...

journal_title：Journal of the American College of Cardiology

authors： Currier JW,Pow TK,Haudenschild CC,Minihan AC,Faxon DP

更新日期：1991-05-01 00:00:00

abstract：:The immediate result of percutaneous transluminal coronary angioplasty is influenced by both plastic and elastic changes of the vessel wall. To evaluate the amount of elastic recoil after coronary balloon angioplasty, the minimal luminal cross-sectional area of the largest balloon used at highest inflation pressure wa...

journal_title：Journal of the American College of Cardiology

authors： Rensing BJ,Hermans WR,Strauss BH,Serruys PW

更新日期：1991-05-01 00:00:00

abstract：:The complexity of the events that culminate in intimal proliferation after arterial injury and similarities between this response and benign neoplasia suggest that conventional medical therapies will continue to be unsuccessful in preventing recurrent stenosis after percutaneous coronary revascularization. By preventi...

journal_title：Journal of the American College of Cardiology

authors： Muller DW,Ellis SG,Topol EJ

更新日期：1991-05-01 00:00:00

abstract：:To evaluate the feasibility of detecting denervated myocardium in the infarcted canine heart, the distribution of sympathetic nerve endings using I-123 metaiodobenzylguanidine (MIBG) was compared with the distribution of perfusion using thallium-201, with the aid of color-coded computer functional map in 16 dogs. Twel...

journal_title：Journal of the American College of Cardiology

authors： Dae MW,Herre JM,O'Connell JW,Botvinick EH,Newman D,Munoz L

更新日期：1991-05-01 00:00:00

abstract：:To assess the reliability of Doppler ultrasound for detecting serial changes in cardiac output in response to experimental interventions, the day to day variability of the minute distance of aortic flow was determined in seven normal subjects maintained in a tightly controlled environment with regard to diet and activ...

journal_title：Journal of the American College of Cardiology

authors： Moulinier L,Venet T,Schiller NB,Kurtz TW,Morris RC Jr,Sebastian A

更新日期：1991-05-01 00:00:00

abstract：:The immediate and long-term efficacy of coronary angioplasty in the elderly was determined by studying 752 patients greater than or equal to 65 years old and comparing patients greater than or equal to 75 years old with those 65 to 74 years old. The oldest patients were more highly symptomatic, were more likely to be ...

journal_title：Journal of the American College of Cardiology

authors： Thompson RC,Holmes DR Jr,Gersh BJ,Mock MB,Bailey KR

更新日期：1991-05-01 00:00:00