Dual echocardiographic determination of atrial contraction sequence in atrial flutter and other related atrial arrhythmias.

abstract：:In this paper we examine the relationship between risk factors and angiographically determined coronary artery disease for blacks and whites enrolled in the Coronary Artery Surgery Study (CASS). Analysis of data from the CASS registry indicated that blacks had a higher incidence of hypertension and current cigarette s...

journal_title：Circulation

authors： Maynard C,Fisher LD,Passamani ER,Pullum T

更新日期：1986-07-01 00:00:00

abstract：BACKGROUND:Abnormalities in HDL and an increased risk of coronary artery disease (CAD) coexist in non-insulin-dependent diabetes mellitus (NIDDM). HDLs can be separated by their apolipoprotein (apo) content into particles containing apoA-I but not apoA-II (LpA-I) and those containing both apoA-I and apoA-II (LpA-I:A-II...

journal_title：Circulation

authors： Syvänne M,Kahri J,Virtanen KS,Taskinen MR

更新日期：1995-08-01 00:00:00

abstract：:To investigate whether iron is involved in the reperfusion syndrome by aggravating free radical injury, the hearts from iron-loaded and control rats were perfused under normoxic, anoxic, and reperfusion conditions. Normoxic perfusion revealed no change in coronary flow, contractility, or lactate dehydrogenase (LDH) re...

journal_title：Circulation

authors： van der Kraaij AM,Mostert LJ,van Eijk HG,Koster JF

更新日期：1988-08-01 00:00:00

abstract：BACKGROUND:Marine n-3 polyunsaturated fatty acids may reduce coronary mortality. Previous data in relation to nonfatal coronary disease, however, have been inconsistent, which may be explained by the use of heterogeneous methods to assess the intake of marine n-3 polyunsaturated fatty acids. We investigated the hypothe...

journal_title：Circulation

authors： Joensen AM,Overvad K,Dethlefsen C,Johnsen SP,Tjønneland A,Rasmussen LH,Schmidt EB

更新日期：2011-09-13 00:00:00

abstract：BACKGROUND:Dilated cardiomyopathy is an important cause of morbidity and mortality among patients with congestive heart failure. Hemodynamic and prognostic characterization are critical in guiding selection of medical and surgical therapies. METHODS AND RESULTS:A cohort of 102 patients with the clinical diagnosis of d...

journal_title：Circulation

authors： Rihal CS,Nishimura RA,Hatle LK,Bailey KR,Tajik AJ

更新日期：1994-12-01 00:00:00

abstract：BACKGROUND:Fe2+ released from tissue iron stores may accelerate lipid peroxidation by virtue of its pro-oxidant properties and thus promote early atherogenesis. METHODS AND RESULTS:The present prospective survey addresses the potential association between serum ferritin concentrations and the 5-year progression of car...

journal_title：Circulation

authors： Kiechl S,Willeit J,Egger G,Poewe W,Oberhollenzer F

更新日期：1997-11-18 00:00:00

abstract：BACKGROUND:Although early intravenous beta-blocker therapy during acute myocardial infarction (AMI) reduces the incidence of fatal arrhythmias in patients not treated with thrombolytic agents, its antiarrhythmic effect in thrombolysed patients remains controversial. We investigated prospectively the arrhythmia incidenc...

journal_title：Circulation

authors： Heidbüchel H,Tack J,Vanneste L,Ballet A,Ector H,Van de Werf F

更新日期：1994-03-01 00:00:00

abstract：:Quantitative detection of left ventricular segmental wall motion abnormalities by any modality depends on the reference system used because of the dynamic geometry of contraction and cardiac motion within the thorax. To assess the feasibility and accuracy of quantitative analysis of left ventricular wall motion by two...

journal_title：Circulation

authors： Schnittger I,Fitzgerald PJ,Gordon EP,Alderman EL,Popp RL

更新日期：1984-08-01 00:00:00

abstract：BACKGROUND:Recent transcatheter aortic valve replacement studies have raised concerns about adverse cerebrovascular events. The etiopathology of the embolized material is currently unknown. METHODS AND RESULTS:A total of 40 patients underwent transcatheter aortic valve replacement with the use of a dual filter-based e...

journal_title：Circulation

authors： Van Mieghem NM,Schipper ME,Ladich E,Faqiri E,van der Boon R,Randjgari A,Schultz C,Moelker A,van Geuns RJ,Otsuka F,Serruys PW,Virmani R,de Jaegere PP

更新日期：2013-06-04 00:00:00

abstract：:The endothelin (ET) system is comprised of 4 active ETs, with ET-1 being the predominant isoform in the cardiovascular system. Because of the potent vasoconstricting and mitogenic effects of ET-1 and its involvement in various cardiovascular diseases, blockade of the ET receptor has received considerable attention. ET...

journal_title：Circulation

authors： Rich S,McLaughlin VV

更新日期：2003-11-04 00:00:00

abstract：BACKGROUND:Contrary to expectation, most studies have demonstrated that initiation of an angiotensin-converting enzyme (ACE) inhibitor in conventional doses in patients with heart failure reduces the diuretic efficacy of furosemide. Recently, it has been suggested that single low doses (1 mg) but not high doses (25 mg)...

journal_title：Circulation

authors： Good JM,Brady AJ,Noormohamed FH,Oakley CM,Cleland JG

更新日期：1994-07-01 00:00:00

abstract：BACKGROUND:Among adults, skipping meals is associated with excess body weight, hypertension, insulin resistance, and elevated fasting lipid concentrations. However, it remains unknown whether specific eating habits regardless of dietary composition influence coronary heart disease (CHD) risk. The objective of this stud...

journal_title：Circulation

authors： Cahill LE,Chiuve SE,Mekary RA,Jensen MK,Flint AJ,Hu FB,Rimm EB

更新日期：2013-07-23 00:00:00

abstract：BACKGROUND:In patients with atrial fibrillation (AF), the risk of thromboembolic events (TEs) is variable and is influenced by the presence and number of comorbid conditions. The effect of percutaneous left atrial radiofrequency ablation (LARFA) of AF on the risk of TEs is unclear. METHODS AND RESULTS:LARFA was perfor...

journal_title：Circulation

authors： Oral H,Chugh A,Ozaydin M,Good E,Fortino J,Sankaran S,Reich S,Igic P,Elmouchi D,Tschopp D,Wimmer A,Dey S,Crawford T,Pelosi F Jr,Jongnarangsin K,Bogun F,Morady F

更新日期：2006-08-22 00:00:00

abstract：BACKGROUND:Depletion of L-arginine (L-arg), the substrate for nitric oxide (NO) synthesis, could be one of the mechanisms responsible for the reduced production of NO and decreased coronary flow (CF) during reperfusion. This, in turn, may adversely affect mechanical function. We aimed to study the benefits of exogenous...

journal_title：Circulation

authors： Amrani M,Gray CC,Smolenski RT,Goodwin AT,London A,Yacoub MH

更新日期：1997-11-04 00:00:00

abstract：:A patient who had disabling supraventricular tachycardia showed electrophysiologic evidence of coexistent right and left Kent bundles. The supraventricular tachycardia was accelerated by sequential antegrade and retrograde conduction over the right and left Kent bundles, respectively. Spontaneous blocking of the condu...

journal_title：Circulation

authors： Cinca J,Valle V,Gutierrez L,Figueras J,Rius J

更新日期：1980-09-01 00:00:00

abstract：BACKGROUND:Patients with transfusional iron overload may develop a life-limiting cardiomyopathy. The sensitivity of lipid-metabolizing enzymes to peroxidative injury, as well as the reported effects of arachidonic acid (AA) and metabolites on cardiac rhythm, led us to hypothesize that iron-overloaded cardiomyocytes dis...

journal_title：Circulation

authors： Mattera R,Stone GP,Bahhur N,Kuryshev YA

更新日期：2001-05-15 00:00:00

abstract：:Four revolutions are transforming the cardiology of our day. The first is a social revolution. It has resulted in plummeting esteem for the medical profession reflecting disenchantment coupled with the rapid emergence of the recognition that health care is a right rather than a privilege. The second revolution, interv...

journal_title：Circulation

authors： Sobel BE

更新日期：1993-06-01 00:00:00

abstract：BACKGROUND:Guidelines have proposed that atrial fibrillation (AF) can occur as an isolated event, particularly when precipitated by a secondary, or reversible, condition. However, knowledge of long-term AF outcomes after diagnosis during a secondary precipitant is limited. METHODS AND RESULTS:In 1409 Framingham Heart ...

journal_title：Circulation

authors： Lubitz SA,Yin X,Rienstra M,Schnabel RB,Walkey AJ,Magnani JW,Rahman F,McManus DD,Tadros TM,Levy D,Vasan RS,Larson MG,Ellinor PT,Benjamin EJ

更新日期：2015-05-12 00:00:00

abstract：BACKGROUND:We have developed a new measure of myocardial viability, the water-perfusable tissue index (PTI), which is calculated from transmission, C15O, and H2(15)O positron emission tomography (PET) data sets. It is defined as the proportion of the total anatomical tissue within a given region of interest (ROI) that ...

journal_title：Circulation

authors： Yamamoto Y,de Silva R,Rhodes CG,Araujo LI,Iida H,Rechavia E,Nihoyannopoulos P,Hackett D,Galassi AR,Taylor CJ

更新日期：1992-07-01 00:00:00

abstract：:High-density lipoprotein (HDL) cholesterol distributions were compared among 191 black and 1341 white males and 233 black and 1088 white females, ages 5-44 years, examined in five of the Lipid Research Clinic (LRC) population-based surveys. Mean HDL cholesterol was higher in blacks than whites in each 5-year age group...

journal_title：Circulation

authors： Tyroler HA,Glueck CJ,Christensen B,Kwiterovich PO Jr

更新日期：1980-11-01 00:00:00

abstract：:To determine the effects of coronary angioplasty on coronary flow reserve (CFR), we studied 32 patients before and immediately after single-vessel coronary angioplasty and 31 patients evaluated late after angioplasty (7.5 +/- 1.2 months, mean +/- SEM). The geometry (percent area stenosis and minimal cross-sectional ar...

journal_title：Circulation

authors： Wilson RF,Johnson MR,Marcus ML,Aylward PE,Skorton DJ,Collins S,White CW

更新日期：1988-04-01 00:00:00

abstract：:We performed a 15 year follow-up of 748 patients undergoing bypass surgery, comparing 532 patients with one or two internal mammary artery grafts with or without additional saphenous vein grafts to 216 patients with saphenous vein grafts alone. During the 15 years of follow-up the 532 patients with at least one intern...

journal_title：Circulation

authors： Cameron A,Kemp HG Jr,Green GE

更新日期：1986-11-01 00:00:00

abstract：BACKGROUND:It is well established that a depressed baroreflex sensitivity may adversely influence the prognosis in patients with chronic heart failure (CHF) and in those with previous myocardial infarction. METHODS AND RESULTS:We tested whether a slow breathing rate (6 breaths/min) could modify the baroreflex sensitiv...

journal_title：Circulation

authors： Bernardi L,Porta C,Spicuzza L,Bellwon J,Spadacini G,Frey AW,Yeung LY,Sanderson JE,Pedretti R,Tramarin R

更新日期：2002-01-15 00:00:00

abstract：:To elucidate the mechanism of regional hemostasis in the left ventricular (LV) cavity during myocardial infarction, the blood pathway in LV cavity was examined with contrast echocardiography injected from the left atrium before and after coronary ligation in nine canines. Before coronary ligation, contrast echoes spre...

journal_title：Circulation

authors： Beppu S,Izumi S,Miyatake K,Nagata S,Park YD,Sakakibara H,Nimura Y

更新日期：1988-07-01 00:00:00

abstract：:This investigation was designed to assess the potential use of laser coronary angioplasty as an intraoperative adjunct in the surgical treatment of ischemic heart disease. Among 17 postmortem hearts, simulated laser coronary angioplasty was performed at 53 sites with a No. 4F guiding catheter and 240 micron (200 micro...

journal_title：Circulation

authors： Isner JM,Donaldson RF,Funai JT,Deckelbaum LI,Pandian NG,Clarke RH,Konstam MA,Salem DN,Bernstein JS

更新日期：1985-09-01 00:00:00

abstract：BACKGROUND:Titin is a giant elastic protein that spans the half-sarcomere from Z-disk to M-band. It acts as a molecular spring and mechanosensor and has been linked to striated muscle disease. The pathways that govern titin-dependent cardiac growth and contribute to disease are diverse and difficult to dissect. METHOD...

journal_title：Circulation

authors： Radke MH,Polack C,Methawasin M,Fink C,Granzier HL,Gotthardt M

更新日期：2019-04-09 00:00:00

abstract：BACKGROUND:Ranolazine is a novel antianginal agent that may reduce symptoms without affecting hemodynamics and has shown cardiac antiischemic effects in in vivo and in vitro models. In one study it increased active pyruvate dehydrogenase (PDHa). Other agents that increase PDHa and so increase glucose and decrease fatty...

journal_title：Circulation

authors： McCormack JG,Barr RL,Wolff AA,Lopaschuk GD

更新日期：1996-01-01 00:00:00

abstract：BACKGROUND:We have previously described two distinct mutations in the beta-myosin heavy chain gene with markedly different clinical presentations and outcome: The 908Leu-->Val mutation was associated with a low disease penetrance and a benign prognosis. In contrast, the 403Arg-->Gln mutation in a Caucasian kindred was ...

journal_title：Circulation

authors： Fananapazir L,Epstein ND

更新日期：1994-01-01 00:00:00

abstract：BACKGROUND:There has been considerable speculation about the role of lesion microvessels in the accumulation of leukocytes in atherosclerosis. However, direct study of microvascular recruitment of leukocytes in lesions has not been performed, and the quantitative role for this route of entry is unclear. METHODS AND RE...

journal_title：Circulation

authors： Eriksson EE

更新日期：2011-11-08 00:00:00

abstract：:Between 1972 and 1984, 100 consecutive neonates (less than or equal to 30 days old) underwent repair of coarctation of the aorta. Mean (+/- SD) age at operation was 12.0 +/- 8.0 days; mean weight was 3.1 +/- 0.5 kg. Simple coarctation was present in 29 patients (group I), 32 patients had additional ventricular septal ...

journal_title：Circulation

authors： Ziemer G,Jonas RA,Perry SB,Freed MD,Castaneda AR

更新日期：1986-09-01 00:00:00