Acute and chronic effects of amiodarone on delayed afterdepolarization and triggered automaticity in rabbit ventricular myocardium.

abstract：BACKGROUND:The Fontan operation results in a circulation that is dependent on low pulmonary vascular resistance to maintain an adequate cardiac output. Medical therapies that lower pulmonary vascular resistance may augment cardiac output and improve long-term outcomes. OBJECTIVES:This phase I/II clinical trial conduct...

journal_title：American heart journal

authors： Goldberg DJ,Zak V,Goldstein BH,Chen S,Hamstra MS,Radojewski EA,Maunsell E,Mital S,Menon SC,Schumacher KR,Payne RM,Stylianou M,Kaltman JR,deVries TM,Yeager JL,Paridon SM,Pediatric Heart Network Investigators.

更新日期：2017-06-01 00:00:00

abstract：:Antiarrhythmic therapy for prevention of sustained ventricular tachycardia is commonly guided by programmed electrical stimulation, and the persistent ability to initiate ventricular tachycardia during drug therapy often leads to the use of nonpharmacologic therapies such as surgery. Prior studies suggest that program...

journal_title：American heart journal

authors： Stevenson WG,Weiss J,Oye RK

更新日期：1990-04-01 00:00:00

abstract：BACKGROUND:Single center studies using serial cerebral diffusion-weighted magnetic resonance imaging in patients having cardiac catheterization have suggested that cerebral microembolism might be responsible for silent cerebral infarct (SCI) as high as 15% to 22%. We evaluated in a multicenter trial the incidence of SC...

journal_title：American heart journal

authors： Hamon M,Lipiecki J,Carrié D,Burzotta F,Durel N,Coutance G,Boudou N,Colosimo C,Trani C,Dumonteil N,Morello R,Viader F,Claise B,Hamon M

更新日期：2012-10-01 00:00:00

abstract：:Electrophysiologic studies were prospectively performed in 91 consecutive patients referred for evaluation of sustained ventricular tachycardia or sudden cardiac death. Fifty-two patients had a history of sustained ventricular tachycardia and 39 patients had a history of sudden cardiac death. The identical stimulation...

journal_title：American heart journal

authors： Oseran DS,Gang ES,Hamer AW,Zaher CA,Rosenthal ME,Mandel WJ,Peter T

更新日期：1985-09-01 00:00:00

abstract：BACKGROUND:Our goal was to evaluate cross-sectionally the association between ideal risk factor (IRF) profile and the presence and severity of subclinical atherosclerosis measured as coronary artery calcium (CAC) in the Brazilian Longitudinal Study of Adult Health. METHODS:We included 4,077 participants with no prior ...

journal_title：American heart journal

authors： Bensenor IM,Goulart AC,Santos IS,Bittencourt MS,Pereira AC,Santos RD,Nasir K,Blankstein R,Lotufo PA

更新日期：2016-04-01 00:00:00

abstract：:Angiographic evidence of coronary dissection after angioplasty is found in 25% to 30% of cases. Although patients are usually asymptomatic, in a small percentage angioplasty-induced coronary dissection results in luminal impairment and ischemic complications. The present study was undertaken to identify factors respon...

journal_title：American heart journal

authors： Sharma SK,Israel DH,Kamean JL,Bodian CA,Ambrose JA

更新日期：1993-07-01 00:00:00

abstract：:Four children with cor triatriatum underwent intraoperative transesophageal echocardiography. Two patients had cor triatriatum alone and two had associated complex congenital heart disease. Transesophageal echocardiography provided optimal imaging of these defects and provided unique information that facilitated surgi...

journal_title：American heart journal

authors： Shuler CO,Fyfe DA,Sade R,Crawford FA

更新日期：1995-03-01 00:00:00

abstract：BACKGROUND:Recent work has demonstrated a link between retinopathy, a marker of microvascular disease, and the development of heart failure, a finding particularly relevant in individuals with diabetes. Our objective was to assess the relationship between retinopathy and cardiac structure and function in a cohort of in...

journal_title：American heart journal

authors： Aguilar D,Hallman DM,Piller LB,Klein BE,Klein R,Devereux RB,Arnett DK,Gonzalez VH,Hanis CL

更新日期：2009-03-01 00:00:00

abstract：:To determine whether the first postpacing interval after entrainment was affected by recording and pacing sites, overdrive atrial pacing was undertaken in 13 episodes of atrial flutter with a mean flutter cycle length (FCL) of 140 +/- 8 msec induced in seven dogs. Atrial flutter was induced by means of an anatomic obs...

journal_title：American heart journal

authors： Inoue H,Toda I,Saihara S,Sugimoto T

更新日期：1989-09-01 00:00:00

abstract：BACKGROUND:Decreased heart rate variability (HRV) is often assumed to be associated with mortality in all patients after myocardial infarction (MI), independent of clinical factors or time after MI. METHOD:HRV was determined from Holter tapes in the Cardiac Arrhythmia Suppression Trial (CAST). Patients were 71 +/- 120...

journal_title：American heart journal

authors： Stein PK,Domitrovich PP,Kleiger RE,CAST Investigators.

更新日期：2004-02-01 00:00:00

abstract：BACKGROUND:Prior studies have reported race and sex differences in cardiac catheterization use after acute myocardial infarction (AMI). It is unclear whether race or sex differences in procedure refusal may contribute to this difference. We sought to determine whether cardiac catheterization refusal rates differ by pat...

journal_title：American heart journal

authors： Rathore SS,Ordin DL,Krumholz HM

更新日期：2002-12-01 00:00:00

abstract：BACKGROUND:There are limited data assessing statin therapy in patients with nonobstructive coronary plaque on coronary computed tomography angiography (CCTA). METHODS:Two hundred six consecutive patients with mild noncalcified plaque on CCTA were enrolled in this multicenter prospective observational study. Subjects w...

journal_title：American heart journal

authors： Li Z,Hou Z,Yin W,Liu K,Gao Y,Xu H,Yu F,Ma Z,Yu W,Yang L,Lu B

更新日期：2016-10-01 00:00:00

abstract：:Left ventricular (LV) outflow obstruction may result from retaining the anterior mitral leaflet when a mitral prosthesis is inserted in the mitral anulus. We retrospectively reviewed the echocardiograms (two-dimensional Doppler and Doppler color flow imaging, or transesophageal with color flow imaging) obtained in sev...

journal_title：American heart journal

authors： Waggoner AD,Pérez JE,Barzilai B,Rosenbloom M,Eaton MH,Cox JL

更新日期：1991-08-01 00:00:00

abstract：:An angioplasty catheter was developed to allow measurement of absolute coronary blood flow during interventional procedures. This method uses electrical impedance changes induced by a 0.5 ml bolus of 5% dextrose solution and indicator-dilution principles. The indicator is injected through a port located just proximal ...

journal_title：American heart journal

authors： Martin LW,Johnson RA,Scott H,Robinson S,Beauman G,Englehardt M,Vogel RA

更新日期：1991-03-01 00:00:00

abstract：:The addition of IAC to otherwise standard CPR provides for the application of external pressure over the abdomen in counterpoint to the rhythm of chest compression. Interposed abdominal compression is a simple manual technique that can supplement the use of adrenergic drugs to increase both coronary perfusion pressure...

journal_title：American heart journal

authors： Babbs CF,Sack JB,Kern KB

更新日期：1994-02-01 00:00:00

abstract：BACKGROUND:In patients with atrial fibrillation, incomplete adherence to anticoagulants increases risk of stroke. Non-warfarin oral anticoagulants (NOACs) are expensive; we evaluated whether higher copayments are associated with lower NOAC adherence. METHODS:Using a national claims database of commercially-insured pat...

journal_title：American heart journal

authors： Rome BN,Gagne JJ,Avorn J,Kesselheim AS

更新日期：2021-01-14 00:00:00

abstract：:Nitrates are widely used for the management of congestive heart failure (CHF), as well as angina pectoris. In both situations, nitrates significantly increase exercise capacity. The mechanism of this beneficial effect is unclear, especially in CHF. Isosorbide dinitrate reduces pulmonary capillary wedge pressure (PCWP)...

journal_title：American heart journal

authors： Franciosa JA

更新日期：1985-07-01 00:00:00

abstract：:The effect of beta-blockade on heart-rate variability was assessed at different heart rates in 52 patients with heart failure included in the randomized, placebo-controlled, Cardiac Insufficiency Bisoprolol Study (CIBIS). Scatterplots of R-R intervals display beat-to-beat variability by plotting each R-R interval agai...

journal_title：American heart journal

authors： Copie X,Pousset F,Lechat P,Jaillon P,Guize L,Le Heuzey JY

更新日期：1996-08-01 00:00:00

abstract：:To assess the effects of chronic left ventricular (LV) dysfunction on intravascular pulmonary blood volume (PBV) and extravascular lung water (EVLW) lung fluid volumes, 56 dogs were evaluated by means of double-indicator dilution techniques. PBV and EVLW were measured in seven control dogs, in eight dogs 4 hours after...

journal_title：American heart journal

authors： Slutsky RA,Olson LK

更新日期：1984-09-01 00:00:00

abstract：:Atrial fibrillation is a common disease of the elderly, conferring considerable morbidity and mortality related to cardiovascular effects and thromboembolic risks. Anticoagulation, antiarrhythmic medications, and rate control are the cornerstone of contemporary management, whereas ablation and evolving surgical techni...

journal_title：American heart journal

authors： Hui DS,Morley JE,Mikolajczak PC,Lee R

更新日期：2015-04-01 00:00:00

abstract：BACKGROUND:Red cell transfusions are lifesaving in severely anemic or acutely bleeding patients but may be associated with an increased risk of cardiovascular events in critically ill patients. The objective of the study was to examine the association between duration of pretransfusion storage of red cells and in-hospi...

journal_title：American heart journal

authors： Eikelboom JW,Cook RJ,Liu Y,Heddle NM

更新日期：2010-05-01 00:00:00

abstract：BACKGROUND:Patients with recurrent forms of atrial fibrillation may receive dual-chamber pacemakers after atrioventricular junction ablation for refractory symptoms. These patients are at risk for chronic atrial fibrillation, which would negate the benefits of dual-chamber pacing. The purpose of this study was to exami...

journal_title：American heart journal

authors： Wood MA,Curtis AB,Takle-Newhouse TA,Ellenbogen KA

更新日期：1999-04-01 00:00:00

abstract：BACKGROUND:Recent randomized clinical trials have suggested a benefit of an invasive management strategy in patients with acute coronary syndromes. However, the broader use and impact of the invasive management approach has not been established for patients with acute coronary syndromes beyond the relatively narrow pat...

journal_title：American heart journal

authors： Dauerman HL,Yarzebski J,Gore JM,Lessard D,Goldberg RJ

更新日期：2002-06-01 00:00:00

abstract：:A 17-year-old man with staphylococcal endocarditis of the mitral valve developed an infective aneurysm of the posterior left ventricular wall. Echocardiography revealed an echo-free space posterior to the posterior left ventricular wall. This echo-free space undoubtedly represented the aneurysmal sac, because it could...

journal_title：American heart journal

authors： Saksena FB,Kramer NE,Towne WD,Khan M,Gamble R,Cruz JB,Gill S

更新日期：1978-09-01 00:00:00

abstract：:Coronary arterial stenosis of varying severity and length were created in open-chest dogs. The reactive hyperemic responses (RHR) to 15 second occlusions were used to produce flow increases and judge the physiological significance of the narrowings. RHR are sensitive indices of functional impairment when resting flow ...

journal_title：American heart journal

authors： Hillis WS,Friesinger GC

更新日期：1976-12-01 00:00:00

abstract：BACKGROUND:Several non-vitamin K antagonist oral anticoagulant (NOAC) alternatives to warfarin are available for stroke prevention in atrial fibrillation (AF). We aimed to describe the factors associated with selection of NOACs versus warfarin in patients with new onset AF. METHODS:The ORBIT-AF II study is a national,...

journal_title：American heart journal

authors： Steinberg BA,Shrader P,Thomas L,Ansell J,Fonarow GC,Gersh BJ,Hylek E,Kowey PR,Mahaffey KW,O'Brien EC,Singer DE,Peterson ED,Piccini JP,Outcomes Registry for Better Informed Treatment of Atrial Fibrillation (ORBIT-AF) Investigato

更新日期：2017-07-01 00:00:00

abstract：:Left ventricular aneurysm has been associated with increased mortality rates. The Cardiac Arrhythmia Suppression Trial (CAST) database was used prospectively to assess (1) the prognostic significance of left ventricular (LV) aneurysm after myocardial infarction on mortality rates and (2) the relation of LV aneurysm to...

journal_title：American heart journal

authors： Hochman JS,Brooks MM,Morris M,Ahmad T

更新日期：1994-04-01 00:00:00

abstract：:Cost-effectiveness analyses are routinely performed to determine whether the additional cost of a novel therapy is balanced by additional effectiveness. The definitions of costs and effects involve a variety of assumptions, both in general economic terms and with regard to the specific medical setting under considerat...

journal_title：American heart journal

authors： van Hout BA,Bowman L,Zelinger DJ,Simoons ML

更新日期：1998-04-01 00:00:00

abstract：:Bacterial shock due to Gram-negative bacilli is best managed by prompt control of the infection with appropriate antibiotics and surgical drainage or excision. Corticosteroids for purposes of controlling systemic reactions to bacteria and their toxins constitute adjunctive therapy. Volume repletion and respiratory sup...

journal_title：American heart journal

authors： Shubin H,Weil MH,Carlson RW

更新日期：1977-07-01 00:00:00

abstract：:Forty-four patients with atrial septal defects, aged 7 months to 18 years (median 8.9), underwent biplane transesophageal (TEE) and transthoracic (TTE) echocardiography. The size of the defect and the shunt flow volume were measured by TEE and compared with the actual size at surgery (N = 14) or the shunt volume measu...

journal_title：American heart journal

authors： Ishii M,Kato H,Inoue O,Takagi J,Maeno Y,Sugimura T,Miyake T,Kumate M,Kosuga K,Ohishi K

更新日期：1993-05-01 00:00:00