Presyncopal sympathetic withdrawal is the same in patients with vasodepressor syncope and controls who faint on head-up tilting.

Abstract:

:Head-up tilt provokes vasodepressor syncope in patients with this disorder but may also cause fainting in unaffected subjects. The aims of this study were to examine autonomic function and sequential changes in heart rate variability and plasma catecholamines during graded head-up tilt in patients with vasodepressor syncope compared with healthy subjects. Studies were performed in 10 patients and 15 control subjects. Eight negative controls completed the study; presyncope or syncope developed in seven positive controls and all 10 patients. The negative control group showed a progressive increase in mid-frequency from the supine position to end tilt. Patients and positive controls showed significant and similar falls in mid-frequency in the presyncope period. The rise in plasma norepinephrine was blunted in patients and positive controls, whereas plasma epinephrine increased more in these groups compared with the negative control group. In conclusion, the patterns of heart rate variability and catecholamine changes could not be distinguished in patients and positive control subjects.

journal_name

Am Heart J

journal_title

American heart journal

authors

Prinz-Zaiss M,Yeap AN,Moguilevski V,Trigg L,McGrath BP

doi

10.1016/s0002-8703(97)70213-8

subject

Has Abstract

pub_date

1997-02-01 00:00:00

pages

230-9

issue

2

eissn

0002-8703

issn

1097-6744

pii

S0002870397000331

journal_volume

133

pub_type

杂志文章
  • Antithrombotic therapy in left ventricular thrombosis and systemic embolism.

    abstract::Left ventricular (LV) thrombi are responsible for significant morbidity and mortality in our society. Twenty-five percent of cardiogenic emboli are associated with acute and chronic myocardial infarction. With the development of noninvasive imaging techniques LV thrombi have been increasingly recognized as an importan...

    journal_title:American heart journal

    pub_type: 杂志文章,评审

    doi:10.1016/0002-8703(92)91069-d

    authors: Cregler LL

    更新日期:1992-04-01 00:00:00

  • Racial differences in endothelial function in postmenopausal women.

    abstract:OBJECTIVE:Racial differences in cardiovascular mortality among women remain largely unexplained. Preliminary data suggest that African American and Caucasian differences in endothelial function may parallel differential cardiovascular disease (CVD) risk in women. To further study differences in endothelial function bet...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/j.ahj.2004.04.032

    authors: Loehr LR,Espeland MA,Sutton-Tyrrell K,Burke GL,Crouse JR 3rd,Herrington DM

    更新日期:2004-10-01 00:00:00

  • The effect of thromboxane inhibition on vulnerability to ventricular fibrillation in the acute and chronic feline infarction models.

    abstract::Inhibition of the enzyme that synthesizes thromboxanes may protect against the development of ventricular fibrillation (VF) during acute myocardial ischemia. This study was carried out to test this hypothesis with a new thromboxane synthetase inhibitor, and to extend the studies to alternative animal models of myocard...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/0002-8703(89)90622-4

    authors: O'Connor KM,Friehling TD,Kowey PR

    更新日期:1989-04-01 00:00:00

  • Validation of an automated electronic algorithm and "dashboard" to identify and characterize decompensated heart failure admissions across a medical center.

    abstract:BACKGROUND:We aim to validate the diagnostic performance of the first fully automatic, electronic heart failure (HF) identification algorithm and evaluate the implementation of an HF Dashboard system with 2 components: real-time identification of decompensated HF admissions and accurate characterization of disease char...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/j.ahj.2016.10.001

    authors: Cox ZL,Lewis CM,Lai P,Lenihan DJ

    更新日期:2017-01-01 00:00:00

  • Clinical setting and prognostic significance of high degree atrioventricular block in acute inferior myocardial infarction: a study of 144 patients.

    abstract::High degree AV block occurred in 144 of 843 patients consecutively admitted because of acute inferior myocardial infarction and was associated with more extensive myocardial damage and a higher mortality rate, as compared to those without AV block. Patients with power failure at the time of appearance of high degree A...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/0002-8703(80)90308-7

    authors: Tans AC,Lie KI,Durrer D

    更新日期:1980-01-01 00:00:00

  • The effect of coronary artery reperfusion on the extent of myocardial infarction.

    abstract::The effect of the reperfusion on myocardial infarction has been studied in the rat in order to assess the possible reversibility of myocardial damage. The present study deals with reperfusion of experimental myocardial infarction in the rat. Two groups of animals were compared: one was subjected to permanent ischemia ...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/s0002-8703(77)80255-x

    authors: Deloche A,Fabiani JN,Camilleri JP,Relland J,Joseph D,Carpentier A,Dubost C

    更新日期:1977-03-01 00:00:00

  • Systemic and renal hemodynamic effects of bupicomide: a new vasodilator.

    abstract::The systemic and renal hemodyanmic effects of bupicomide were studied in 10 male patients with uncomplicated essential hypertension of moderate severity. Bupicomide significantly reduced systolic, diastolic, and mean arterial pressure and peripheral vascular resistance and this hypotensive effect was associated with a...

    journal_title:American heart journal

    pub_type: 临床试验,杂志文章

    doi:10.1016/s0002-8703(76)80114-7

    authors: Chrysant SG,Adamopoulos P,Tsuchiya M,Frohlich ED

    更新日期:1976-09-01 00:00:00

  • A comparison of standard and high-dose regimens for the initiation of amiodarone therapy.

    abstract::The effects of two regimens for the initiation of amiodarone therapy were compared in 92 patients with inducible sustained ventricular tachycardia (VT) at baseline electrophysiologic testing. Two groups of 46 patients each received a total of 16.8 gm of oral amiodarone before follow-up electrophysiologic testing. Grou...

    journal_title:American heart journal

    pub_type: 临床试验,杂志文章

    doi:10.1016/0002-8703(92)90599-q

    authors: Summitt J,Morady F,Kadish A

    更新日期:1992-08-01 00:00:00

  • The safety and efficacy of full- versus reduced-dose betrixaban in the Acute Medically Ill VTE (Venous Thromboembolism) Prevention With Extended-Duration Betrixaban (APEX) trial.

    abstract:BACKGROUND:The APEX trial assessed the safety and efficacy of extended-duration thromboprophylaxis using betrixaban versus standard dosing of enoxaparin among hospitalized, acutely ill medical patients. The 80-mg betrixaban dose was halved to 40 mg among subjects with severe renal insufficiency and those receiving a co...

    journal_title:American heart journal

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1016/j.ahj.2016.12.004

    authors: Gibson CM,Halaby R,Korjian S,Daaboul Y,Arbetter DF,Yee MK,Goldhaber SZ,Hull R,Hernandez AF,Lu SP,Bandman O,Leeds JM,Gold A,Harrington RA,Cohen AT,APEX Investigators.

    更新日期:2017-03-01 00:00:00

  • A new method of scoring coronary angiograms to reflect extent of coronary atherosclerosis and improve correlation with major risk factors.

    abstract::We developed a new angiographic score of the extent of coronary disease (extent score), which we compared with conventional stenosis and vessel scores that emphasize the severity of stenosis. Scores were determined in 132 patients (29 women, 103 men with a mean age of 55 +/- 10 years) who underwent elective coronary a...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/s0002-8703(05)80173-5

    authors: Sullivan DR,Marwick TH,Freedman SB

    更新日期:1990-06-01 00:00:00

  • Patterns of inflammation associated with peripheral arterial disease: the InCHIANTI study.

    abstract:OBJECTIVE:To determine whether peripheral arterial disease is associated with high circulating levels of pro-inflammatory cytokines, independent of confounders. METHODS:Participants were 955 men and women aged 60 years and older representative of the population in 2 Italian communities (107 with peripheral arterial di...

    journal_title:American heart journal

    pub_type: 杂志文章,多中心研究

    doi:10.1016/j.ahj.2004.09.032

    authors: McDermott MM,Guralnik JM,Corsi A,Albay M,Macchi C,Bandinelli S,Ferrucci L

    更新日期:2005-08-01 00:00:00

  • Neopterin levels in patients with coronary artery disease are independent of Chlamydia pneumoniae seropositivity.

    abstract:BACKGROUND:Chronic infection with Chlamydia pneumoniae (Cpn) has been associated with atherosclerotic cardiovascular disease in sero-epidemiological, pathological and animal-model studies. Inflammation and immune activation has been proposed as the pathophysiological link between chronic infection and atherosclerosis. ...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/S0002-8703(03)00101-7

    authors: Smith DA,Zouridakis EG,Mariani M,Fredericks S,Cole D,Kaski JC

    更新日期:2003-07-01 00:00:00

  • Population screening for plasma cholesterol: community-based results from Connecticut.

    abstract::Plasma cholesterol levels were measured in 15,892 participants of a cholesterol screening in Hartford, Connecticut. The screenees were typically health conscious as evidenced by the low prevalence of current cigarette smoking (12%). However, more than 25% of the men and 35% of the women over the age of 50 years had ch...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/0002-8703(89)90741-2

    authors: Wynder EL,Harris RE,Haley NJ

    更新日期:1989-03-01 00:00:00

  • Ventricular arrhythmias in dilated cardiomyopathy: efficacy of amiodarone.

    abstract::Sixty-five patients with dilated cardiomyopathy were studied by means of 24-hour ECG monitoring. Ventricular arrhythmias were present in 62 (95.4%), of whom 52 (80%) showed a complex form (multiform ventricular extrasystoles, pairs, and ventricular tachycardia). Forty-one patients, presenting with complex ventricular ...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/0002-8703(87)90711-3

    authors: Neri R,Mestroni L,Salvi A,Pandullo C,Camerini F

    更新日期:1987-03-01 00:00:00

  • Effects of beta-blockade with bisoprolol on heart rate variability in advanced heart failure: analysis of scatterplots of R-R intervals at selected heart rates.

    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

    pub_type: 临床试验,杂志文章,多中心研究,随机对照试验

    doi:10.1016/s0002-8703(96)90435-4

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

    更新日期:1996-08-01 00:00:00

  • Effectiveness of recanalization of chronic total occlusions: a systematic review and meta-analysis.

    abstract:BACKGROUND:Chronic total occlusion (CTO) recanalizations remain extremely challenging procedures. With improvements in technology and techniques, success rates for recanalization of CTO continue to improve. However, the clinical benefits of this practice remain unclear. The aim of the study was to determine the effecti...

    journal_title:American heart journal

    pub_type: 杂志文章,meta分析,评审

    doi:10.1016/j.ahj.2010.04.015

    authors: Joyal D,Afilalo J,Rinfret S

    更新日期:2010-07-01 00:00:00

  • Residual atrial septal perforation after percutaneous transvenous mitral commissurotomy with Inoue balloon catheter.

    abstract::To estimate the incidence of residual atrial septal perforation (ASP) following percutaneous transvenous mitral commissurotomy (PTMC) with the Inoue balloon catheter and to examine the factors contributing to ASP, we studied 46 patients with mitral stenosis undergoing PTMC. Residual ASP was evaluated by Doppler color ...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/0002-8703(90)90203-a

    authors: Ishikura F,Nagata S,Yasuda S,Yamashita N,Miyatake K

    更新日期:1990-10-01 00:00:00

  • Sustained-release local hirulog therapy decreases early thrombosis but not neointimal thickening after arterial stenting.

    abstract::Adventitial heparin delivery has been shown to inhibit thrombosis and neointimal thickening in a rat carotid injury model. To determine whether sustained, local delivery of hirulog, a potent antithrombin agent, inhibits thrombus formation and neointimal thickening after arterial stenting, silicone polymers containing ...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/s0002-8703(96)90343-9

    authors: Muller DW,Gordon D,Topol EJ,Levy RJ,Golomb G

    更新日期:1996-02-01 00:00:00

  • The association between early ventricular arrhythmias, renin-angiotensin-aldosterone system antagonism, and mortality in patients with ST-segment-elevation myocardial infarction: Insights from Global Use of Strategies to Open coronary arteries (GUSTO) V.

    abstract:BACKGROUND:The long-term prognostic significance of early (<48 hours) ventricular fibrillation (VF) or sustained ventricular tachycardia (VT) in patients with an acute myocardial infarction remains controversial. Emerging data suggest that some of the benefit of renin-angiotensin-aldosterone system (RAAS) antagonism ma...

    journal_title:American heart journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.ahj.2009.05.023

    authors: Askari AT,Shishehbor MH,Kaminski MA,Riley MJ,Hsu A,Lincoff AM,GUSTO-V Investigators.

    更新日期:2009-08-01 00:00:00

  • Evaluation of coronary artery calcium screening strategies focused on risk categories: the Dallas Heart Study.

    abstract:BACKGROUND:A strategy using coronary artery calcium (CAC) screening to refine coronary heart disease risk assessment in moderately high risk (MHR) subjects (10-year risk 10%-20%) has been suggested. The potential impact of this strategy is unknown. METHODS:Coronary artery calcium screening strategies focused on MHR su...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/j.ahj.2009.03.018

    authors: Patel MJ,de Lemos JA,McGuire DK,See R,Lindsey JB,Murphy SA,Grundy SM,Khera A

    更新日期:2009-06-01 00:00:00

  • EMERGEncy versus delayed coronary angiogram in survivors of out-of-hospital cardiac arrest with no obvious non-cardiac cause of arrest: Design of the EMERGE trial.

    abstract:BACKGROUND:In adults, the most common cause of out-of-hospital cardiac arrests (OHCA) is acute coronary artery occlusion. If an immediate coronary angiogram (CAG) is recommended for survivors presenting a ST segment elevation on the electrocardiogram (ECG) performed after resuscitation, there is still a debate regardin...

    journal_title:American heart journal

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1016/j.ahj.2020.01.006

    authors: Hauw-Berlemont C,Lamhaut L,Diehl JL,Andreotti C,Varenne O,Leroux P,Lascarrou JB,Guerin P,Loeb T,Roupie E,Daubin C,Beygui F,Vilfaillot A,Glippa S,Djadi-Prat J,Chatellier G,Cariou A,Spaulding C,EMERGE investigators.

    更新日期:2020-04-01 00:00:00

  • An angiographic assessment of alteplase: double-bolus and front-loaded infusion regimens in myocardial infarction. DouBLE Study Investigators. Double Bolus Lysis Efficacy.

    abstract:BACKGROUND:This study was designed to investigate the efficacy of alteplase double-bolus dosing compared with the front-loaded 90-minute infusion regimen in patients with acute myocardial infarction. Recent pilot studies have suggested that bolus dosing may provide improved efficacy in establishing early, complete, and...

    journal_title:American heart journal

    pub_type: 临床试验,杂志文章,多中心研究,随机对照试验

    doi:10.1016/s0002-8703(98)70024-9

    authors: Bleich SD,Adgey AA,McMechan SR,Love TW

    更新日期:1998-10-01 00:00:00

  • Single photon emission computed tomographic teboroxime imaging with a preprocessing masking technique.

    abstract::We previously reported that single-head SPECT imaging with teboroxime is feasible. However, excessive hepatic uptake in some patients may interfere with image interpretation. This study examined the feasibility of improving image quality by use of a preprocessing masking technique to subtract hepatic activity. A band ...

    journal_title:American heart journal

    pub_type: 临床试验,杂志文章

    doi:10.1016/0002-8703(92)90079-b

    authors: Heo J,Iskandrian B,Cave V,Iskandrian AS

    更新日期:1992-12-01 00:00:00

  • Oral blockade of the platelet glycoprotein IIb/IIIa receptor: fact or fancy?

    abstract::Currently available antiplatelet agents are limited in the scope and magnitude of platelet inhibition. Orally active platelet glycoprotein IIb/IIIa antagonists are currently in clinical testing. These agents may extend platelet inhibition and clinical benefit from parenteral glycoprotein IIb/IIIa antagonists. The most...

    journal_title:American heart journal

    pub_type: 杂志文章,评审

    doi:10.1053/hj.1999.v138.99080

    authors: Kereiakes DJ

    更新日期:1999-07-01 00:00:00

  • Diagnostic coronary angiography induces a systemic inflammatory response in patients with stable angina.

    abstract:BACKGROUND:Systemic markers of inflammation increase after percutaneous coronary intervention (PCI). The rise in inflammatory markers after PCI is frequently attributed to the inflammatory stimulus associated with coronary artery injury during balloon inflation and coronary stent implantation. The aim of this study was...

    journal_title:American heart journal

    pub_type: 临床试验,杂志文章

    doi:10.1016/S0002-8703(03)00407-1

    authors: Goldberg A,Zinder O,Zdorovyak A,Diamond E,Lischinsky S,Gruberg L,Markiewicz W,Beyar R,Aronson D

    更新日期:2003-11-01 00:00:00

  • Changes in transmitral and pulmonary venous flow velocity patterns after cardioversion of atrial fibrillation.

    abstract::To examine the recovery time of left atrial mechanical function after electrical cardioversion of atrial fibrillation, we recorded transmitral flow, pulmonary venous flow velocities, and interatrial septal motion during atrial systole within 24 hours (16 +/- 5 hours) and 10 days after cardioversion in 25 patients with...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/s0002-8703(96)90353-1

    authors: Iuchi A,Oki T,Fukuda N,Tabata T,Manabe K,Kageji Y,Sasaki M,Hama M,Yamada H,Ito S

    更新日期:1996-02-01 00:00:00

  • Clinical comparison of "normal-hours" vs "off-hours" percutaneous coronary interventions for ST-elevation myocardial infarction.

    abstract:BACKGROUND:High mortality rates were reported in ST-elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary interventions (PPCI) "off-hours." The objective of this study was to evaluate this issue in a more recent population of patients with STEMI treated with PPCI in a high-volume ter...

    journal_title:American heart journal

    pub_type: 杂志文章

    doi:10.1016/j.ahj.2007.04.025

    authors: Ortolani P,Marzocchi A,Marrozzini C,Palmerini T,Saia F,Aquilina M,Baldazzi F,Silenzi S,Taglieri N,Grosseto D,Bacchi-Reggiani ML,Guastaroba P,Grilli R,Branzi A

    更新日期:2007-08-01 00:00:00

  • The effects of enhanced external counterpulsation on myocardial perfusion in patients with stable angina: a multicenter radionuclide study.

    abstract:BACKGROUND:Enhanced external counterpulsation (EECP) reduces angina and extends time to exercise-induced ischemia in patients with symptomatic coronary disease. One- and two-center studies and a retrospective case series reported that EECP improves myocardial perfusion in stable angina pectoris. We sought to critically...

    journal_title:American heart journal

    pub_type: 杂志文章,多中心研究

    doi:10.1016/j.ahj.2005.01.054

    authors: Michaels AD,Raisinghani A,Soran O,de Lame PA,Lemaire ML,Kligfield P,Watson DD,Conti CR,Beller G

    更新日期:2005-11-01 00:00:00

  • Temporal changes in emergency department triage of patients with acute myocardial infarction and the effect on outcomes.

    abstract:BACKGROUND:All patients who present to an emergency department (ED) are triaged. The ED triage score may determine when patients are seen by a physician. Half of patients with acute myocardial infarction (AMI) were given a low priority score in Ontario in 2000/2001. We assessed the appropriateness of ED triage and its ...

    journal_title:American heart journal

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1016/j.ahj.2011.05.015

    authors: Atzema CL,Schull MJ,Austin PC,Tu JV

    更新日期:2011-09-01 00:00:00

  • Spaced administration of PA32540 and clopidogrel results in greater platelet inhibition than synchronous administration of enteric-coated aspirin and enteric-coated omeprazole and clopidogrel.

    abstract:BACKGROUND:A common regimen for patients requiring dual-antiplatelet therapy who are at risk for gastrointestinal complications is the synchronous administration of enteric-coated (EC) aspirin, a proton pump inhibitor, and clopidogrel, although proton pump inhibitors have the potential for pharmacodynamic interaction w...

    journal_title:American heart journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.ahj.2012.07.032

    authors: Gurbel PA,Bliden KP,Fort JG,Jeong YH,Shuldiner A,Chai S,Gesheff T,Antonino M,Gesheff M,Zhang Y,Tantry US

    更新日期:2013-02-01 00:00:00