Validation of a specific activity questionnaire to estimate exercise tolerance in patients referred for exercise testing.

abstract：:It has been shown that brief episodes of myocardial ischemia can render the heart more resistant to a prolonged subsequent ischemic episode. This phenomenon, called "preconditioning," has been described in human beings during coronary angioplasty with the use of clinical, electrocardiographic (ECG), or metabolic param...

journal_title：American heart journal

authors： Eltchaninoff H,Cribier A,Tron C,Derumeaux G,Koning R,Hecketsweiller B,Letac B

更新日期：1997-04-01 00:00:00

abstract：BACKGROUND:The diameter pulse waveforms (DPWs) are known to reflect the pressure waveforms at the target vessel. Our purpose was to clarify the usefulness of DPWs recorded noninvasively from the fetal inferior vena cava (IVC) for detecting cardiac function. METHODS:A paired ultrasonic phase-locked echo tracking system...

journal_title：American heart journal

authors： Mori A,Uchida N,Ishiguro Y,Atsuko T,Kanako M,Mikio M

更新日期：2007-10-01 00:00:00

abstract：BACKGROUND:Hepatocyte growth factor (HGF), a member of the endothelial-specific growth factors with the greatest mitogenic activity, may play a role in the protection and/or repair of vascular endothelial cells injured by atherosclerosis. As a result, plasma HGF concentration may increase in response to endothelial cel...

journal_title：American heart journal

authors： Tateishi J,Waku S,Masutani M,Ohyanagi M,Iwasaki T

更新日期：2002-02-01 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 evaluate whether the identification of the different types of relations between premature ventricular contractions (PVCs) and the preceding sinus cycle length is capable of predicting the effect of beta-blockers on the PVCs themselves, 55 patients (43 men, 12 women, mean age 52.6 +/- 15.6 years) with different card...

journal_title：American heart journal

authors： Pitzalis MV,Mastropasqua F,Massari F,Totaro P,Di Maggio M,Rizzon P

更新日期：1996-03-01 00:00:00

abstract：OBJECTIVES:Impedance monitoring has been proposed as a method to assess the adequacy of tissue heating during catheter ablation procedures. The purpose of this study was to evaluate the relation among initial impedance, fall in impedance, and electrode temperature during catheter ablation procedures. METHODS AND RESUL...

journal_title：American heart journal

authors： Nsah E,Berger R,Rosenthal L,Hui R,Ramza B,Jumrussirikul P,Lawrence JH,Tomaselli G,Kass D,Calkins H

更新日期：1998-11-01 00:00:00

abstract：BACKGROUND:Chronotropic incompetence and left ventricular (LV) dilatation have both been shown to be markers of an adverse cardiovascular prognosis. Chronotropic incompetence has been described in patients with symptomatic LV dilatation and dysfunction, but the effect of asymptomatic LV dilatation and hypertrophy on ex...

journal_title：American heart journal

authors： Lauer MS,Larson MG,Evans JC,Levy D

更新日期：1999-05-01 00:00:00

abstract：:High levels of endogenous plasma catecholamines in patients with severe congestive heart failure induce a down-regulation of the myocardial beta-adrenoreceptors and thus cause adrenoreceptor agonists, such as dobutamine, to be less effective in the treatment of these patients. Phosphodiesterase III inhibitors work ind...

journal_title：American heart journal

authors： Mager G,Klocke RK,Kux A,Höpp HW,Hilger HH

更新日期：1991-06-01 00:00:00

abstract：BACKGROUND:Atrial fibrillation (AF) is a major risk factor for stroke and systemic embolism. Trials comparing warfarin with non-vitamin K oral anticoagulants (NOACs) have demonstrated that, when compared with warfarin, the NOACs are at least as effective in preventing stroke, although detailed analyses characterizing s...

journal_title：American heart journal

authors： Geller BJ,Giugliano RP,Braunwald E,Murphy SA,Hanyok JJ,Jin J,Mercuri M,Antman EM,Ruff CT

更新日期：2015-10-01 00:00:00

abstract：:The long-term prognosis of patients successfully resuscitated from cardiac arrest who do not have acute precipitating factors and in whom ventricular arrhythmias cannot be induced during baseline electrophysiologic testing is controversial. The purpose of this investigation was to evaluate the long-term risk of recurr...

journal_title：American heart journal

authors： Sager PT,Choudhary R,Leon C,Rahimtoola SH,Bhandari AK

更新日期：1990-12-01 00:00:00

abstract：BACKGROUND:Peak exercise oxygen consumption (peak VO2) is an important discriminator of survival in patients with systolic heart failure and is used to select ambulatory patients for transplantation. The major trials assessing the relationship between peak VO2 and survival have used a variety of low-level exercise prot...

journal_title：American heart journal

authors： Strzelczyk TA,Cusick DA,Pfeifer PB,Bondmass MD,Quigg RJ

更新日期：2001-09-01 00:00:00

abstract：BACKGROUND:Understanding pulmonary vein (PV) anatomy is important for the planning and execution of PV isolation for the treatment of atrial fibrillation, screening for PV stenosis after the procedure, and investigating the pathophysiology of atrial fibrillation. We hypothesized that significant changes in PV size occu...

journal_title：American heart journal

authors： Hauser TH,Yeon SB,Kissinger KV,Josephson ME,Manning WJ

更新日期：2006-11-01 00:00:00

abstract：:We discuss the anatomy, physiology, and pathophysiology of epicardial adipose tissue and its relationship to coronary atherosclerosis. Epicardial fat stores triglyceride to supply free fatty acids for myocardial energy production and produces adipokines. It shares a common embryological origin with mesenteric and omen...

journal_title：American heart journal

authors： Sacks HS,Fain JN

更新日期：2007-06-01 00:00:00

abstract：BACKGROUND:Although more than one million patients in the United States have permanent pacemakers, little is known about their cause of death. We evaluated the cause of death in 404 patients who died in the Mode Selection Trial (MOST). METHODS:In MOST, patients received a dual-chamber pacemaker randomly programmed to ...

journal_title：American heart journal

authors： Flaker G,Greenspon A,Tardiff B,Schron E,Goldman L,Hellkamp A,Lee K,Lamas G,Mode Selection Trial (MOST) Investigators.

更新日期：2003-11-01 00:00:00

abstract：BACKGROUND:Coronary heart disease (CHD) in women is strongly associated with estrogen deprivation. For example, risk for CHD increases dramatically after menopause. However, the role of hormone replacement therapy (HRT) in CHD prevention currently is unresolved. To better understand CHD in women, the precise mechanisms...

journal_title：American heart journal

authors： McCubbin JA,Helfer SG,Switzer FS 3rd,Price TM

更新日期：2002-04-01 00:00:00

abstract：:Polymorphic ventricular arrhythmias (PVAs) initiated by programmed electrical stimulation may be a nonspecific response or evidence of ventricular electrical instability. To determine if PVAs initiated in patients with spontaneous sustained ventricular tachycardia or fibrillation differ from those which are clearly a ...

journal_title：American heart journal

authors： Stevenson WG,Brugada P,Waldecker B,Zehender M,Wellens HJ

更新日期：1986-06-01 00:00:00

abstract：:A-II exerts its activity on various target tissues by binding to its receptors. The discovery of local RASs and A-II receptors within various tissues has generated interest in the clinical usefulness of RAS inhibition by directly blocking the action of A-II at the receptor level. Different A-II receptor subtypes have ...

journal_title：American heart journal

authors： Kang PM,Landau AJ,Eberhardt RT,Frishman WH

更新日期：1994-05-01 00:00:00

abstract：BACKGROUND:Previous studies have generated inconsistent results when attempting to define predictors of stroke and death in patients with endocarditis. We sought to examine the relationship between vegetation 2-dimensional size and stroke in those with infective endocarditis (IE) and to identify differences between aor...

journal_title：American heart journal

authors： Cabell CH,Pond KK,Peterson GE,Durack DT,Corey GR,Anderson DJ,Ryan T,Lukes AS,Sexton DJ

更新日期：2001-07-01 00:00:00

abstract：:To evaluate the potential for hyperbaric oxygen (HBO) to produce transient improvement in function in areas of myocardium ischemic at rest (hibernating myocardium), 24 patients were studied within 1 week of acute myocardial infarction. Results were compared with single-photon emission computed tomography (SPECT) thall...

journal_title：American heart journal

authors： Swift PC,Turner JH,Oxer HF,O'Shea JP,Lane GK,Woollard KV

更新日期：1992-11-01 00:00:00

abstract：OBJECTIVE:To analyze the effect of delay times on racial differences in thrombolysis for acute myocardial infarction. BACKGROUND:Lower rates of thrombolytic therapy in blacks with acute myocardial infarction have recently been reported, but the reasons for this disparity are unknown. We hypothesized that lower rates o...

journal_title：American heart journal

authors： Syed M,Khaja F,Rybicki BA,Wulbrecht N,Alam M,Sabbah HN,Goldstein S,Borzak S

更新日期：2000-10-01 00:00:00

abstract：BACKGROUND:Postinterventional cognitive dysfunction (PICD) is a known complication of coronary artery bypass grafting (CABG). However, it is largely unknown whether PICD occurs after coronary catheterization. METHODS:Neuropsychologic data were obtained from 37 patients who received coronary catheterization and 47 pati...

journal_title：American heart journal

authors： Schwarz N,Schoenburg M,Möllmann H,Kastaun S,Kaps M,Bachmann G,Sammer G,Hamm C,Walther T,Gerriets T

更新日期：2011-10-01 00:00:00

abstract：BACKGROUND:Although recent data support an early invasive management in acute coronary syndromes (ACS), overall evidence appears conflicting. We performed a metaregression to explore the impact of intracoronary stenting and aggressive antiplatelet treatment on the risk/benefit ratio of an early invasive approach. METH...

journal_title：American heart journal

authors： Biondi-Zoccai GG,Abbate A,Agostoni P,Testa L,Burzotta F,Lotrionte M,Trani C,Biasucci LM

更新日期：2005-03-01 00:00:00

abstract：:The purpose of this study was to compare the three most commonly used maximal graded exercise test (GXT) protocols in healthy women. Submaximal and maximal metabolic and hemodynamic responses were determined from two treadmill protocols, Bruce and Balke, and a bicycle protocol, in 49 women. Maximum oxygen uptake (VO2 ...

journal_title：American heart journal

authors： Pollock ML,Foster C,Schmidt D,Hellman C,Linnerud AC,Ward A

更新日期：1982-03-01 00:00:00

abstract：BACKGROUND:Diabetes mellitus and impaired glucose metabolism are associated with increased risk for cardiovascular disease (CVD). However, it is still not clear whether glucose levels can predict CVD risk among patients without diabetes. The primary aim of this study is to assess whether normoglycemic fasting plasma gl...

journal_title：American heart journal

authors： Shaye K,Amir T,Shlomo S,Yechezkel S

更新日期：2012-07-01 00:00:00

abstract：BACKGROUND:Sirolimus-eluting stents (SES) prevent restenosis and repeat percutaneous coronary intervention (PCI), but safety data in unselected patients are limited, especially for intermediate-term follow-up. METHODS:All patients undergoing SES implantation at 4 Italian centers were enrolled into a dedicated database...

journal_title：American heart journal

authors： Sangiorgi G,Romagnoli E,Biondi-Zoccai G,Margheri M,Tamburino C,Barbagallo R,Falchetti E,Vittori G,Agostoni P,Cosgrave J,Colombo A,RECIPE (Real-world Eluting-stent Comparative Italian retrosPective Evaluation) Study Investigators.

更新日期：2008-11-01 00:00:00

abstract：:Abnormal interventricular septal motion is a frequent finding after cardiac surgery. However, the time course and underlying mechanisms are not well understood. Nineteen patients, mean age 54 years (range 20 to 82 years), were studied with intraoperative transesophageal echocardiography at five specific times: with th...

journal_title：American heart journal

authors： Wranne B,Pinto FJ,Siegel LC,Miller DC,Schnittger I

更新日期：1993-07-01 00:00:00

abstract：:Development of aortic valvular deformities was studied retrospectively in 395 inpatients with subarterial infundibular ventricular septal defect (siVSD). Aortic valvular deformities included prolapse into siVSD without aortic regurgitation (77 patients), prolapse and aortic regurgitation (95 patients), and aneurysm of...

journal_title：American heart journal

authors： Momma K,Toyama K,Takao A,Ando M,Nakazawa M,Hirosawa K,Imai Y

更新日期：1984-11-01 00:00:00

abstract：:1. A 4-year-old boy with the congenital partial defect of the left pericardium who presented with myocardial infarction, died of incarceration of the left ventricle. 2. This is the fourth reported case of death from this anomaly in the world. 3. Because this anomaly occasionally causes sudden death, it is important to...

journal_title：American heart journal

authors： Saito R,Hotta F

更新日期：1980-12-01 00:00:00

abstract：:To investigate the influence of intrinsic limb vasodilator capacity on exercise performance, limb reactive hyperemic flows and their relations to exercise capacity during upright bicycle exercise were examined in 52 patients with recent myocardial infarction. Reactive hyperemic flow was measured in the forearm and the...

journal_title：American heart journal

authors： Hattori T,Sumimoto T,Yuasa F,Kaida M,Jikuhara T,Hikosaka M,Sugiura T,Iwasaka T

更新日期：1996-09-01 00:00:00

abstract：:Adequate hydration is recommended for acute ST-elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PCI) to prevent contrast-induced nephropathy (CIN). However, the optimal hydration regimen has not been well established in these high-risk patients. The objective of t...

journal_title：American heart journal

authors： Liu Y,Chen JY,Huo Y,Ge JB,Xian Y,Duan CY,Chen SQ,Jiang W,Chen PY,Tan N,RESCIND group.

更新日期：2016-02-01 00:00:00