Search Results
Results 601 - 650 of 2019
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Ho Paul C - - 2005
The usual large thrombus load encountered in acute ST-elevation myocardial infarctions increases the likelihood for slow-flow or no-reflow during percutaneous coronary intervention. The use of rotational atherectomy in this clinical scenario is usually prohibitive due to the potential for further induction of platelet activation and aggregation by the rotating burr. ...
Kosuge Masami - - 2005
STUDY OBJECTIVE: During inferior acute myocardial infarction (AMI), the ECG lead aVR is frequently ignored, and therefore its clinical significance remains unclear. We examined the relation between ST-segment deviation seen in lead aVR on ECGs obtained at hospital admission and myocardial reperfusion in patients who have experienced recanalized inferior AMIs. ...
Bosch Xavier - - 2005
BACKGROUND: Improvement in risk stratification of patients with non-ST-segment elevation acute coronary syndrome (ACS) is a gateway to a more judicious treatment. This study examines whether the routine determination of left ventricular ejection fraction (EF) adds significant prognostic information to currently recommended stratifiers. METHODS: Several predictors of inhospital mortality were ...
Gibler W Brian - - 2005
In the United States each year, >5.3 million patients present to emergency departments with chest discomfort and related symptoms. Ultimately, >1.4 million individuals are hospitalized for unstable angina and non-ST-segment elevation myocardial infarction. For emergency physicians and cardiologists alike, these patients represent an enormous challenge to accurately diagnose and appropriately ...
Kürüm Turhan - - 2005
Initial electrocardiography changes were compared prospectively with the findings of coronary angiography to predict the infarct-related artery (IRA) in cases of single- and multi-vessel disease and to demonstrate the relationship between other coexisting coronary involvements and IRA in patients who presented with acute inferior myocardial infarction (AMI). ST elevations or ...
Plautz Claire U - - 2005
The diagnosis of myocardial contusion in the setting of blunt trauma engenders much discussion and controversy-partly because of the lack of a gold standard for its identification other than histologic findings at autopsy. Furthermore, blunt cardiac trauma represents a spectrum of disorders ranging from transient electrocardiographic change to sudden death ...
Haude Michael - - 2005
The rupture of an atherosclerotic plaque in an epicardial coronary artery with subsequent occlusive coronary thrombosis has been established as the decisive event in the pathogenesis of an acute coronary syndrome, which encompasses the clinical entities of unstable angina, non-ST- and ST-elevation myocardial infarction. This article focuses on contemporary treatment ...
Billgren Therese - - 2005
BACKGROUND: Among patients with ST-elevation acute myocardial infarction, those with terminal QRS distortion (grade 3 ischemia) have higher mortality and larger infarct size (IS) than patients without QRS distortion (grade 2 ischemia). METHODS: We assessed the relation of baseline electrocardiographic ischemia grades to area at risk (AR) and myocardial salvage ...
DeVon Holli A - - 2005
Coronary heart disease is the primary health risk for all Americans. Acute coronary syndromes (ACS) is the term used to denote any 1 of 3 clinical manifestations of coronary heart disease: unstable angina, non-ST elevation myocardial infarction, and ST-elevation MI. The major challenge to healthcare providers is the rapid and ...
Ilkay Erdogan - - 2005
The treatment methods for acute myocardial infarction (MI) have started to change in the new millennium. Myocardial perfusion (ST-segment resolution) is the target rather than achieving TIMI-III flow in the infarct-related artery. In this study the authors compared the effect of percutaneous transluminal coronary angioplasty (PTCA) and excimer laser angioplasty ...
Laskey Warren K - - 2005
The objective of this study was to determine whether acutely ischemic myocardium may be conditioned during percutaneous coronary intervention for acute myocardial infarction. Ischemic preconditioning is a powerful cardioprotective mechanism that limits infarct size in animal investigations and ischemic sequelae during percutaneous coronary intervention in man. However, the conditioning stimulus ...
Achar Suraj A - - 2005
The term "acute coronary syndrome" encompasses a range of thrombotic coronary artery diseases, including unstable angina and both ST-segment elevation and non-ST-segment elevation myocardial infarction. Diagnosis requires an electrocardiogram and a careful review for signs and symptoms of cardiac ischemia. In acute coronary syndrome, common electrocardiographic abnormalities include T-wave tenting ...
Ripa Rasmus S - - 2005
BACKGROUND: Because patients with acute left circumflex occlusion are typically characterized primarily on the standard 12-lead electrocardiogram (ECG) by ST depression, they do not qualify to receive reperfusion therapy. Documentation of a relationship between the quantities of acute ST change and final QRS estimated acute myocardial infarction (AMI) size could ...
Häggmark Sören - - 2005
INTRODUCTION: In order to interpret ST-segment changes as an indicator of ischemia in patients with higher heart rates (HRs), the relation between ST-segment levels and HR needs to be well defined in subjects without coronary artery disease. METHODS: Eighteen patients with normal ECGs in the catheterization laboratory, after radiofrequency ablation ...
Figueras J - - 2005
To investigate the characteristics of the acute coronary syndromes underlying acute pulmonary oedema and their 30 day prognosis. 185 consecutive patients with acute coronary syndromes and acute pulmonary oedema admitted to a tertiary care centre. Clinical, ECG, echocardiographic, enzymatic, and angiographic features were prospectively investigated. Non-ST segment elevation myocardial infarction ...
Savonitto Stefano - - 2005
AIMS: We sought to determine whether the extent of myocardial ischaemia on the admission electrocardiogram (ECG) has independent predictive value for short-term risk stratification of patients with non-ST-segment elevation acute coronary syndromes (NSTE ACS). Although the presence of ischaemic ECG changes on admission has been shown to predict outcome, the ...
Asada Satoshi - - 2006
A case of ST-segment elevation provoked by distended stomach conduit is presented. An 83-year-old woman was admitted to our hospital with worsening chest discomfort. She had a previous history of subtotal esophagectomy, which was reconstructed using a stomach conduit in the posterior mediastinum. Electrocardiogram showed ST-segment elevation in the inferior ...
Chantad Darawan - - 2006
BACKGROUND: There are little data on the validation of 12-lead electrocardiogram (ECG) derived by the EASI lead system used for continuous monitoring in critical care settings. OBJECTIVE: The objectives of this study were to determine the accuracy of 12-lead ECG derived by the EASI lead system in the detection of ...
Montalescot Gilles - - 2005
We assessed whether timing of catheterization is associated with the type of non-ST-segment elevation acute coronary syndrome and/or outcome in patients who were enrolled in the Global Registry of Acute Coronary Events. Overall, 8,853 patients who had unstable angina pectoris or non-ST-elevation myocardial infarction were categorized according to timing of ...
De Luca Giuseppe - - 2005
The present study investigated any seasonal variation in myocardial perfusion, enzymatic infarct size, and 1-year mortality in 1,548 patients who underwent primary angioplasty for ST-segment elevation myocardial infarction. No seasonal variation was observed in patients' demographic and clinical characteristics. No difference was observed in the prevalence of heart failure at ...
Hopenfeld Bruce - - 2005
We quantify and provide biophysical explanations for some aspects of the relationship between the bidomain conductivities and ST-segment epicardial potentials that result from subendocardial ischemia. We performed computer simulations of ischemia with a realistic whole heart model. The model included a patch of subendocardial ischemic tissue of variable transmural thickness ...
De Luca Giuseppe - - 2005
The aim of the present study was to evaluate the impact of interhospital delay on mortality in 616 patients with ST-segment elevation myocardial infarction transferred for primary angioplasty to our hospital. Longer interhospital delay was associated with impaired perfusion, larger infarct size, and higher 1-year mortality (adjusted RR 1.5, 95% ...
Skvarilová Marcela - - 2005
Oxidative stress impairs endothelial function and may play an important role in the pathogenesis of acute cardiovascular diseases. Advanced oxidation protein products (AOPP) were proposed as one of the possible markers of oxidative injury, which originates under oxidative and carbonyl stress and increase global inflammatory activity. The present study was ...
Timmer Jorik R - - 2005
Patients with diabetes mellitus (DM) have an adverse prognosis after ST-segment elevation myocardial infarction (STEMI). Whether DM was associated with impaired myocardial reperfusion after successful primary percutaneous coronary intervention for STEMI was investigated. Myocardial reperfusion was assessed by ST-segment resolution and myocardial blush grade (MBG). A total of 386 patients ...
Kosuge Masami - - 2005
To identify an early, simple, noninvasive predictor of left main (LM) or 3-vessel disease (3-VD), we retrospectively studied clinical variables on admission in 310 patients with acute coronary syndromes with non-ST-segment elevation. Univariate analysis indicated that many factors were related to LM/3-VD. Multivariate analysis showed that ST-segment elevation in lead ...
van der Horst Iwan C C - - 2005
BACKGROUND: To evaluate the impact of adjunctive high-dose glucose-insulin-potassium (GIK) on ST-segment elevation resolution in patients with ST-segment elevation myocardial infarction (MI). METHODS: As part of a randomized controlled trial of GIK versus no GIK in patients treated with primary percutaneous coronary intervention (PCI) for ST-elevation MI in a tertiary ...
Kawano Hiroaki - - 2005
We report a case of a 58-year-old man with Shoshin beriberi who demonstrated ST-segment elevation and myocardial damage without coronary artery stenosis. The patient subsequently recovered with thiamine treatment. We conclude that it is important to consider Shoshin beriberi as part of the differential diagnosis in patients with shock and ...
Christensen Merete - - 2005
OBJECTIVE: Myocardial ischaemia has been described during endoscopic retrograde cholangio-pancreatography (ERCP), but the pathogenesis remains unclear. The aim of the present study was to evaluate whether coronary artery disease was present in patients with ST-segment changes during ERCP. MATERIAL AND METHODS: Forty patients were monitored with a Holter tape recorder ...
Rinkevich Diana - - 2005
AIMS: We hypothesized that the assessment of left ventricular regional function (RF) and myocardial perfusion (MP) will provide incremental value over routine evaluation in patients who present to the emergency department (ED) with chest pain (CP) and no ST-segment elevation. METHODS AND RESULTS: In addition to routine clinical evaluation, patients ...
Gibler W Brian - - 2005
In the United States each year, >5.3 million patients present to emergency departments with chest discomfort and related symptoms. Ultimately, >1.4 million individuals are hospitalized for unstable angina and non-ST-segment elevation myocardial infarction. For emergency physicians and cardiologists alike, these patients represent an enormous challenge to accurately diagnose and appropriately ...
Costantini Marcello - - 2005
Acute myocarditis may mimic an infarction. Aim is to describe a case series of peculiar myocarditis. From 1997 to 2003, 11 male patients (age 17-39 years) were admitted with diagnosis of acute myocardial infarction, localized ST segment elevation and minimal enzyme release. Ten patients had fever in the 3 days ...
Mega Jessica L - - 2005
BACKGROUND: The TIMI risk score for unstable angina and non-ST elevation myocardial infarction is an effective tool for predicting the risk of death and ischemic events among patients with non-ST elevation acute coronary syndromes, as well as for identifying those who are likely to benefit most from low-molecular-weight heparin and ...
Korosoglou Grigorios - - 2005
Microvascular integrity is a prequisite for functional recovery in patients who have myocardial infarction after recanalization of the infarct-related coronary artery. In this study, we investigated whether impaired myocardial perfusion is present in patients who have non-ST-elevation myocardial infarction and whether the extent and time course of myocardial tissue reperfusion ...
Prabhakaran Dorairaj - - 2005
BACKGROUND: Acute coronary syndrome continues to have significant long-term morbidity and mortality. This study sought to compare baseline characteristics, practice patterns and clinical outcomes for patients with non-ST elevation acute coronary syndrome from a broad range of low-, middle- and high-income countries. METHODS AND RESULTS: We compared the data from ...
Dargie H - - 2005
In most patients with heart failure due to left ventricular systolic dysfunction, the underlying cause is coronary heart disease. To reduce progression to heart failure in a patient with acute myocardial infarction, it is important to achieve the earliest possible reperfusion, whether by thrombolysis or primary percutaneous coronary intervention. Every ...
Choudhry Niteesh K - - 2005
PURPOSE: Patients with unstable angina or non-ST-segment elevation myocardial infarction (MI) may be managed with either an "invasive" or "conservative" strategy. It is unclear which of these strategies is superior. METHODS: We identified studies with MEDLINE and EMBASE searches (1966-September 2003) and by reviewing reference lists. Studies were included if ...
Szygula-Jurkiewicz Bozena - - 2005
OBJECTIVE: The efficacy of percutaneous and surgical revascularization in acute coronary syndromes without ST-segment elevation is similar. Therefore, other factors, like health-related quality of life, should play an important role in choosing the revascularization method. METHODS: We compared 12-month health-related quality of life for high-risk patients with acute coronary syndromes ...
Johanson Per - - 2005
AIMS: Serial forecasts of final myocardial infarct (MI) size during fibrinolytic treatment (Rx) of ST-elevation MI would allow the identification of high-risk patients with a predicted major loss of viable myocardium, at a point when treatment may still be modified. We investigated a model for such forecasting, using time and ...
Himbert Dominique - - 2005
PURPOSE: To determine the impact of cigarette smoking on the presentation, treatment, and in-hospital outcomes of patients admitted with the full spectrum of acute coronary syndromes. METHODS: GRACE is a multinational observational registry involving 94 hospitals in 14 countries. This analysis is based on 19,325 patients aged at least 18 ...
Zairis Michael N - - 2005
BACKGROUND: Continuous 12-lead electrocardiographic (ECG) ST monitoring and the Thrombolysis In Myocardial Infarction Risk Score (TIMI-RS), both have been shown to be useful for early risk stratification in patients with non-ST elevation acute coronary syndromes (NSTACS). HYPOTHESIS: Transient ST ischemic events, detected by continuous 12-lead ECG ST monitoring, early in ...
Garan Arthur R - - 2005
INTRODUCTION: Deaths secondary to low-energy impacts to the precordium in young individuals (commotio cordis) have been reported with increasing frequency. In a swine model, baseball impacts induce ventricular fibrillation when directed at the center of the left ventricle during the vulnerable portion of repolarization just prior to the T-wave peak. ...
Akhtar Naveed - - 2005
'aVR' is usually not the preferred lead to diagnose myocardial infarction in clinical settings, it is rather a neglected lead in this context. We describe the case of a 44 year old male who presented with short duration chest pain and ST segment elevation in lead 'aVR'. His left heart ...
Yap Lok B - - 2005
BACKGROUND: ST segment depression on the electrocardiogram during the exercise treadmill test (ETT) is used as a predictor of coronary artery disease (CAD), although it is recognised that both false-positive and false-negative results limit the value of this procedure. Although adenosine does not produce an inotropic or chronotropic effect upon ...
Pitta Sridevi R - - 2005
This study analyzed 255,256 patients who had acute myocardial infarction and were enrolled in the National Registry of Myocardial Infarction 2, 3, and 4 (1994 to 2002). The objective was to determine in-hospital mortality rate among patients who had ST-segment depression on the initial electrocardiogram. Patients who had ST-segment depression ...
Tsui Kin-Lam - - 2005
In his second week of severe acute respiratory syndrome (SARS) illness, a patient developed an unusually complicated course of acute coronary syndrome. One day after initial stabilization of a non-ST-elevated anterior myocardial infarction (MI), he sustained an ST-elevated anterior MI. Eight hours after emergency coronary intervention to the culprit lesion, ...
Triantafyllis Dimitrios G - - 2005
Proximal occlusion of the right coronary artery may, in certain circumstances, cause elevation on the anterior wall leads. This can occur more easily when the size of the lesion in the inferior wall is small compared to that in the right ventricle. The size distribution of the elevations in the ...
Rebeiz Abdallah G - - 2005
We compared combination fibrinolytic plus glycoprotein IIb/IIIa inhibitor therapy with stand-alone fibrinolysis with respect to speed and stability of reperfusion in patients who had acute ST-segment elevation myocardial infarction; data were obtained from 654 patients in 4 trials (Integrilin to Manage Platelet Aggregation to Combat Thrombosis in Acute Myocardial Infarction, ...
Kaluzay Jozef - - 2005
BACKGROUND: Determination of ST-segment deviation (STdev) and its resolution (STR) by reperfusion strategies have become important tools in the assessment of patients with acute myocardial infarction (AMI). STdev has been measured at different time-points, i.e. at 20-80 ms after the J-point. There are no data comparing STR at different time-points. ...
Svensson Leif - - 2005
AIM: To evaluate factors that identify patients with an acute coronary syndrome/myocardial infarction prior to hospital admission among patients with a suspected acute coronary syndrome who were transported by ambulance with and without ST elevation on the ambulance electrocardiogram (ECG). METHODS: This was a prospective observational study in the part ...
Beck Christine A - - 2005
BACKGROUND: Despite decades of research, it is still unclear whether patients with uncomplicated ST-segment elevation acute myocardial infarction (AMI) should be managed with an invasive or a noninvasive approach after successful thrombolysis. METHODS: We reviewed randomized trials in which patients were randomized to a strategy of routine cardiac catheterization after ...
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