Search Results
Results 351 - 400 of 2018
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Dominguez-Rodriguez Alberto - - 2008
Elevated levels of soluble cellular adhesion molecules have been reported in patients with acute coronary syndromes. Likewise, a relation between decreased nocturnal melatonin levels and coronary artery disease has been suggested. The aim of the present study was to investigate the day-night variations in the concentration of soluble vascular cell ...
Romano Michele - - 2008
OBJECTIVE: We evaluated the incidence and predictive factors of impaired microcirculation, defined as myocardial blush grade (MBG) 0, in patients undergoing primary angioplasty for ST-elevation myocardial infarction. METHODS: Since 2001, in our province a network has been operating for the treatment of ST-elevation myocardial infarction based on the use of ...
Cheng Kai-Hung - - 2008
OBJECTIVE: In reperfusion strategy for ST-elevation myocardial infarction (STEMI), emergency surgical bypass grafting might be considered for patients with significant multivessel coronary diseases complicated by cardiogenic shock. The culprit lesions in STEMI can be predicted from electrocardiographic (ECG) findings. However, whether the complexity of coronary artery lesions in STEMI can ...
Sillesen Martin - - 2008
BACKGROUND: Time from symptom onset to reperfusion is essential in patients with ST-segment elevation acute myocardial infarction. Prior studies have indicated that prehospital 12-lead electrocardiogram (ECG) transmission can reduce time to reperfusion. PURPOSE: Determine 12-lead ECG transmission success rates, and time saved by referring patients directly to primary percutaneous coronary ...
Phumeechanya Sopon - - 2008
We propose a 3D left ventricular segmentation method for cardiac MR images. There are two steps in our method. In the first step, we improve our double active contours for segmenting the endocardial and the epicardial boundaries simultaneously without requiring any training sets. In the second step, we designed a ...
Jayawardena Suriya - - 2008
Hyperkalaemic paralysis due to renal failure is a rare but potentially life threatening event. We present a patient who had sudden onset ascending flaccid paralysis. The EMS first diagnosis was acute ST-elevation myocardial infarction based on an EKG. In the emergency room (ER) due to careful history taking, serum electrolytes ...
Sciagrà R - - 2008
Assess the determinants of final infarct size in patients successfully treated with primary percutaneous coronary intervention (PCI) and abciximab therapy and check whether infarct abortion may occur. In 208 patients we examined the parameters that predict final infarct size and the incidence of aborted infarction, defined by completely normal perfusion ...
Plein Sven - - 2008
The acute coronary syndrome diagnosis includes different classifications of myocardial infarction, which have been shown to differ in their pathology, as well as their early and late prognosis. These differences may relate to the underlying extent of infarction and/or residual myocardial ischemia. The study aim was to compare scar and ...
Cochet Alexandre - - 2008
to investigate the association between admission hyperglycemia and myocardial damage in patients with ST-segment elevation myocardial infarction (STEMI) using Cardiac Magnetic Resonance (CMR). We analyzed 113 patients with STEMI treated with successful primary percutaneous coronary intervention. Admission hyperglycemia was defined as a glucose level >/= 7.8 mmol/l. Contrast-enhanced CMR was ...
Crossman David C DC Cardiovascular Research Unit, School of Medicine & Biomedical Sciences, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX, UK. - - 2008
Acute Coronary Syndromes account for 15% of deaths in the UK, and patients remain at significant risk of re-admission for future complications and death. Pathologically the underlying process of atherosclerosis is driven by inflammatory mechanisms, which are activated in ACS patients. Previous studies have investigated the role of inflammatory markers ...
Sayah Assaad J - - 2008
The efficacy of fibrinolytics in the treatment of ST-elevation myocardial infarction is directly related to the time of administration, with the first 2 h after symptom onset seen as a critical period for greatest improvement in cardiovascular parameters and mortality. The American College of Cardiology/American Heart Association recommends a medical ...
Leibowitz David - - 2008
Spontaneous reperfusion (SR) of the infarct-related artery may occur in patients with ST-segment-elevation myocardial infarctions (STEMIs). Limited data are available on the angiographic characteristics of these patients. The objective of this study was to determine if there are differences in the distance of the culprit lesion from the coronary ostium ...
Chen Ji-lin - - 2007
OBJECTIVE: To explore the infarct sites in patients with inferior wall acute myocardial infarction (AMI) concomitant with ST segment elevation in leads V1-V3 and leads V3R-V5R. METHODS: Five patients diagnosed as inferior, right ventricular, and anteroseptal walls AMI at admission were enrolled. Electrocardiographic data and results of isotope 99mTc-methoxyisobutylisonitrile (MIBI) ...
Hilliard Anthony A - - 2009
We describe a case of isolated right ventricular myocardial infarction as the cause of anterior precordial lead ST segment elevation. This case illustrates that anterior ST segment elevation may occur with occlusion of the right coronary artery. It is important to recognize this scenario as the treatment of right ventricular ...
Zia Mohammad I - - 2007
BACKGROUND: Practice guidelines support an early invasive strategy in patients with non-ST segment elevation acute coronary syndromes, particularly in those at higher risk. OBJECTIVES: To compare North American rates of invasive cardiac procedure use stratified by risk. METHODS: Use of invasive cardiac procedures and other care patterns in patients with ...
Lefebvre Cedric - - 2007
Prompt and accurate identification of patients with acute coronary syndrome (ACS) presenting to the emergency department (ED) is paramount to the success of interventional and therapeutic strategies. Accurate diagnosis of ST-segment elevation myocardial infarction or non-ST-segment elevation myocardial infarction is hindered by atypical presentations and suboptimal diagnostic tools. The current ...
Schindler Daniel M - - 2007
Patients presenting to the emergency department with chest pain are triaged to early reperfusion therapies based on their initial 12-lead electrocardiogram (ECG). The standard 12-lead ECG lacks sensitivity to detect acute myocardial infarction (AMI). Electrocardiographic diagnosis of non-ST-elevation myocardial infarction (non-STEMI) is especially difficult and is delayed until cardiac biomarkers ...
Singer Adam J - - 2007
STUDY OBJECTIVE: American Heart Association/American College of Cardiology guidelines recommend door-to-balloon times of fewer than 90 minutes in patients with acute ST-segment-elevation myocardial infarction. We hypothesized that immediate activation of an interventional cardiology team (code H) would reduce the time to percutaneous coronary intervention by 1 hour and increase the ...
Challa Prasanna K - - 2007
BACKGROUND: Evaluation of chest pain accounts for millions of costly Emergency Department (ED) visits and hospital admissions annually. Of these, approximately 10-20% are myocardial infarctions (MI). HYPOTHESIS: Patients with chest pain whose initial electrocardiogram (ECG) is normal do not require hospital admission for evaluation and management of a possible myocardial ...
Ozdogru Ibrahim - - 2007
OBJECTIVES: We aimed to investigate whether there were any differences in the percentages of CD14(+) monocytes between subgroups of acute coronary syndromes (ACS). CD14(+) is a monocyte surface receptor that plays a role in the innate immune system. CD14(+) monocytes are associated with complications of atherosclerosis. METHODS: In total we ...
Shusterman Vladimir - - 2007
Accurate detection of the earliest signs of ischemia on the surface electrocardiogram (ECG) is essential for timely diagnosis and management of potentially life-threatening ischemic events. Yet, accuracy of ischemia analysis in ECG monitors remains suboptimal because of a number of confounding factors, including changes in body position and other artifacts. ...
Toma M - - 2008
BACKGROUND: The baseline sum of ST deviation (SigmaSTD) and ST segment resolution after fibrinolysis for ST-elevation myocardial infarction are prognostically useful. OBJECTIVES: To examine the prognostic impact of ST resolution after fibrinolysis and influence of baseline ST deviation in ASSENT-3. METHODS: ST resolution was determined in 4565 patients at 180 ...
Omar Abdul Razakjr - - 2007
INTRODUCTION: Atherosclerotic coronary artery thrombosis is the most common cause of acute myocardial infarction. CLINICAL PICTURE: A 30-year-old lady presented with acute peripartum massive anterior ST segment myocardial infarction and cardiogenic shock. This was due to acute Stanford type A aortic dissection with the intimal flap occluding the left coronary ...
Positano Vincenzo - - 2007
A segmental, multislice, multi-echo T2* MRI approach could be useful in heart iron-overloaded patients to account for heterogeneous iron distribution, demonstrated by histological studies. However, segmental T2* assessment in heart can be affected by the presence of geometrical and susceptibility artefacts, which can act on different segments in different ways. ...
Boussy T - - 2007
Over the last 14 years - since the Brugada syndrome was first recognized as a distinct clinical/electrocardiographical entity - a considerable number of papers have been published on its various aspects. It has been defined as the combination of a typical ST-segment elevation in the right precordial leads and a ...
Chen Junhong - - 2007
PURPOSE: To assess the regional systolic function in patients with post myocardial infarction (PMI), using the velocity vector imaging (VVI) technique, a new two-dimensional echocardiographic method. METHODS: Two-dimensional images of apical four, two chambers and apical long-axis view were obtained in 20 patients with PMI and 15 normal controls. The ...
Ratanasumawong Kasem - - 2007
OBJECTIVE: To describe differences in in-hospital morbidity and mortality, presenting characteristics and management practices of diabetic and non-diabetic patients with non-ST elevation myocardial infarction using data from Thai ACS registry. MATERIAL AND METHOD: Thai ACS registry is a multi-center prospective project of nationwide registration in Thailand. RESULTS: The present study ...
Brener Zachary Z - - 2007
Cardiac involvement is uncommon and important clinical finding during an anaphylactic reaction, and it occurs primarily in subjects with underlying ischemic heart disease. The main mechanism proposed is the vasospasm of coronary arteries. We report a rare case of acute ST-elevation myocardial injury after penicillin-induced anaphylaxis in a patient with ...
Sansen Vicky - - 2007
Takotsubo' cardiomyopathy, more recently called transient left ventricular apical ballooning syndrome, is a recently described acute cardiac syndrome. This increasingly reported syndrome consists of an acute onset of transient extensive akinesia of the apical and mid-portions of the left ventricle, producing ballooning of the apex in systole in the absence ...
Lemmert Miguel E - - 2008
BACKGROUND: Sudden cardiac death caused by ischemic ventricular fibrillation (VF) associated with ST elevation myocardial infarction (STEMI) is one of the most frequent causes of death. OBJECTIVE: We hypothesized that electrocardiographic (ECG) characteristics differ between STEMI patients with and without ischemic VF. METHODS: Fifty-five first STEMI patients with at least ...
Wollert Kai C - - 2007
BACKGROUND: An invasive treatment strategy improves outcome in patients with non-ST-elevation acute coronary syndrome at moderate to high risk. We hypothesized that the circulating level of growth differentiation factor 15 (GDF-15) may improve risk stratification. METHODS AND RESULTS: The Fast Revascularization during InStability in Coronary artery disease II (FRISC-II) trial ...
Scirica Benjamin M - - 2007
BACKGROUND: Ranolazine, a piperazine derivative, reduces ischemia via inhibition of the late phase of the inward sodium current (late I(Na)) during cardiac repolarization, with a consequent reduction in intracellular sodium and calcium overload. Increased intracellular calcium leads to both mechanical dysfunction and electric instability. Ranolazine reduces proarrhythmic substrate and triggers ...
Omran Mohammad T - - 2007
OBJECTIVE: Serum fibrinogen level (SFL) is thought to be one of the risk factors for coronary artery disease (CAD). The purpose of this study was to measure the SFL in patients with acute coronary syndrome (ACS). METHODS: This study was performed in patients with ACS, admitted in Shahid Beheshti Hospital, ...
Baevsky Robert H - - 2007
OBJECTIVE: The goal of this study was to determine if a change in body position alters the 12-lead electrocardiographic (ECG) interpretation for ischemia and ST-segment elevation, the latter having direct implications for initial patient management in the emergency department. METHODS: Twelve-lead ECGs were sequentially obtained from a convenience sample of ...
Klein Lloyd W - - 2007
Patients older than 75 years account for >60% of all deaths from acute myocardial infarction. Although there are accepted guidelines for treatment of acute ST-segment elevation myocardial infarction, elderly patients tend to have a variety of conditions that can complicate decisions about the best therapy. Many elderly patients do not ...
Martin Thomas N - - 2007
OBJECTIVES: The purpose of this study was to validate existing 12-lead electrocardiographic (ECG) ST-segment elevation myocardial infarction (STEMI) criteria in the diagnosis of acute myocardial infarction (AMI) and the application of similar ST-segment depression (STEMI-equivalent) criteria with contrast-enhanced cardiac magnetic resonance imaging (ceMRI) as the diagnostic gold standard. BACKGROUND: The ...
Button, D.
<sec><st>Background</st> Assessment of cardiac output (CO) by the FloTrac/Vigileo™ system may offer a less invasive means of determining the CO than either the pulmonary artery catheter (PAC) or the PiCCOplus™ <it>system</it>. The aim of this study was to compare CO measurements made using the FloTrac/Vigileo™ system with upgraded software (FCO, ...
Benchimol-Barbosa Paulo R - - 2008
Ventricular late potentials (VLP) are electrical signals detected at the terminal region of the ventricular activation on surface ECG and often correlated to regions of fragmented electrical conduction in subjacent damaged myocardium. Intraventricular electrical transients (IVET) arisen from myocardial infarction scars may influence VLP identification depending on transient time of ...
Jim Man-Hong - - 2008
Normal coronary arteries were found in 22 (5.8%) of 379 patients presented with acute inferior myocardial infarction. These patients were significantly younger, had less cardiovascular risk factors, better systolic heart function, and lower cardiac enzymes level. Electrocardiography significantly showed more (1) ratio of ST-segment elevation in II/ III>or=1; (2) isoelectric ...
Gazit Avihu Z - - 2007
Electrocardiographic criteria for the diagnosis of cardiac ischemia in adults are well defined; however, analogous criteria for the diagnosis of cardiac ischemia in infants and children remain ambiguous. The difficulty in defining electrocardiographic criteria in pediatrics relates to age-dependent differences in the pediatric electrocardiogram, the presence or absence of congenital ...
Hurst J Willis - - 2007
The QRS, S-T, and T wave abnormalities produced by the usual myocardial infarction are discussed in Part I of this manuscript. The recent guidelines supplied by the ACC/AHA Practice Guidelines divide primary S-T segment displacement into S-T segment elevated myocardial infarction (STEMI) and non S-T segment elevated myocardial infarction (NSTEMI). ...
Azzarelli Salvatore - - 2007
We describe a case of an 85-year-old woman who presented with chest pain after a crisis of bronchial asthma. On admission, the electrocardiogram showed ST-segment elevation in leads II, III, and aVF. Peak troponin I level was 3.0 ng/dl (normal value <0.4 ng/dl). Angiography demonstrated ballooning of the mid portion ...
Dhruva Vivek N - - 2007
OBJECTIVES: Our goal was to examine the effects of implementing a fully automated wireless network to reduce door-to-intervention times (D2I) in ST-segment elevation myocardial infarction (STEMI). BACKGROUND: Wireless technologies used to transmit prehospital electrocardiograms (ECGs) have helped to decrease D2I times but have unrealized potential. METHODS: A fully automated wireless ...
Chew D P - - 2007
BACKGROUND: Acute coronary syndromes (ACS) management is now well informed by guidelines extrapolated from clinical trials. However, most of these data have been acquired outside the local context. We sought to describe the current patterns of ACS care in Australia. METHODS: The Acute Coronary Syndrome Prospective Audit study is a ...
de Vries Jessica - - 2007
AIMS: To study the effect of electrical neurostimulation on the ST segment shift in patients with ST elevation myocardial infarction (STEMI) with residual ST elevation after primary percutaneous coronary intervention (PCI). METHODS: After primary PCI, 38 patients with STEMI were divided into 2 groups. Group 1 received 15 minutes of ...
Alvarez Tamargo José A - - 2008
BACKGROUND: There has been no clear consensus regarding the optimum definition of a high-risk exercise ECG test. The aim of this study is to compare the diagnostic accuracy of several treadmill scores [American College of Cardiology/American Heart Association (ACC/AHA) High-Risk Criteria for exercise testing, Duke Treadmill Score, Veterans Affairs and ...
Windhausen Fons - - 2007
BACKGROUND: We assessed the prognostic significance of the presence of cumulative (Sigma) ST-segment deviation on the admission electrocardiogram (ECG) in patients with non-ST-elevation acute coronary syndrome and an elevated troponin T randomized to a selective invasive (SI) or an early invasive treatment strategy. METHODS: A 12-lead ECG obtained at admission ...
Gumina Richard J - - 2007
Acute coronary syndromes (ACSs), which include the clinical entities of unstable angina (UA), non-ST-segment elevation myocardial infarction (NSTEMI), and ST-segment elevation myocardial infarction (STEMI), account for more than 1.5 million hospital admissions annually in the United States alone. Approximately 1 million of these admissions are classified as UA/NSTEMI and approximately ...
Ryabykina G V - - 2007
OBJECTIVE: The aim of this study was to compare electrocardiogram (ECG)-12 dynamics depending on the methods of facilitated and primary angioplasty in patients with acute coronary syndrome. The ECG changes in 81 patients - 73 patients with acute myocardial infarction and 8 patients with unstable angina pectoris - were studied. ...
Worthley Matthew I - - 2007
PURPOSE: The study assessed the relationship of admission blood glucose level to in-hospital mortality in patients presenting with an ST-segment elevation myocardial infarction and treated with primary angioplasty. METHODS: A total of 980 patients presenting with an ST-segment elevation myocardial infarction and treated exclusively with primary angioplasty were evaluated. Patients ...
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