QT-interval prolongation has been shown to predict mortality in coronary artery disease and heart failure. To assess the prognostic value of QT interval for death due to low cardiac output after coronary artery bypass grafting, the QT interval was measured in 3 consecutive beats on the preoperative electrocardiogram (leads II and V(4)) in 30 patients who died perioperatively due to heart failure and a control group of 168 randomly matched hospital survivors during the same 3-year period. Mean corrected QT interval was significantly longer in the patients who died compared to the control group (480.7 +/- 96.2 vs. 425.4 +/- 21 ms). Among the variables evaluated, QT prolongation was the only independent predictor of perioperative death. In patients admitted for coronary artery bypass grafting, QT interval measurement is a simple clinical tool that may identify patients with a greater probability of a troublesome operative course.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1177/0218492309349068 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Epicardial Adipose Tissue from Computed Tomography: a Missing Link in Premature Coronary Artery Disease?
Eur Heart J Cardiovasc Imaging
January 2025
Sorbonne Université, unité d'imagerie cardiovasculaire et thoracique, Hôpital La Pitié Salpêtrière (AP-HP), Laboratoire d'Imagerie Biomédicale, INSERM, CNRS, Institute of Cardiometabolism and Nutrition, ACTION Group, Paris, France.
Purpose: Epicardial adipose tissue (EAT) could contribute to the specific atherosclerosis profile observed in premature coronary artery disease (pCAD) characterized by accelerated plaque burden (calcified and non-calcified), high risk plaque features (HRP) and ischemic recurrence. Our aims were to describe EAT volume and density in pCAD compared to asymptomatic individuals matched on CV risk factors and to study their relationship with coronary plaque severity extension and vulnerability.
Materials And Methods: 208 patients who underwent coronary computed tomography angiography (CCTA) were analyzed.
A Whodunnit: Anterior ST-Elevation Myocardial Infarction in a Patient Found to Have Apparent Takotsubo Cardiomyopathy, Left Anterior Descending Artery Disease, and Myocardial Bridging.
Cureus
December 2024
Department of Cardiovascular Medicine, University of Texas Health Science Center at Houston, Houston, USA.
We present a case of a 52-year-old male with no known past medical history who presented to an outside hospital with acute chest pain. Initial workup revealed anteroseptal ST-elevation myocardial infarction (STEMI) for which the patient was transferred to our facility for emergent percutaneous coronary intervention (PCI). However, the patient's hospital course revealed numerous confounding pathologies that can also present as STEMI, including transthoracic echocardiogram (TTE) abnormalities consistent with takotsubo cardiomyopathy (TCM) as well as myocardial bridging presenting as post-PCI STEMI in the setting of nitroglycerin use.
View Article and Find Full Text PDFThe guide extension-facilitated ostial stenting (GEST) technique uses a guide extension catheter (GEC) to improve stent delivery during primary coronary angioplasty (PCI). GECs are used for stent delivery into the coronary arteries of patients with difficult anatomy due to tortuosity, calcification, or chronic total occlusion (CTO) vessels. Stent and balloon placement has become challenging in patients with increasing lesion complexity due to tortuosity, vessel morphology, length of the lesion, and respiratory movements.
View Article and Find Full Text PDFCoronary Artery Ectasia in Acute Coronary Syndrome: The Role of Non-vitamin K Antagonist Oral Anticoagulants in Management.
Interv Cardiol
November 2024
Cardiology Section, Internal Medicine Department, Arab Medical Center Amman, Jordan.
Coronary artery ectasia (CAE) is an abnormal dilatation of coronary artery segments, often linked with atherosclerosis. This report discusses two cases of CAE presenting as acute coronary syndrome. A 36-year-old man had proximal blockage in the left circumflex artery (LCx) and ectasia in the obtuse marginal artery and left anterior descending artery (LAD), while a 53-year-old male smoker had an ectatic LAD with a substantial thrombus.
View Article and Find Full Text PDFThe role of multimodality imaging in diabetic cardiomyopathy: a brief review.
Front Endocrinol (Lausanne)
December 2024
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States.
Diabetic cardiomyopathy (DMCM), defined as left ventricular dysfunction in the setting of diabetes mellitus without hypertension, coronary artery disease or valvular heart disease, is a well-recognized entity whose prevalence is certainly predicted to increase alongside the rising incidence and prevalence of diabetes mellitus. The pathophysiology of DMCM stems from hyperglycemia and insulin resistance, resulting in oxidative stress, inflammation, cardiomyocyte death, and fibrosis. These perturbations lead to left ventricular hypertrophy with associated impaired relaxation early in the course of the disease, and eventually culminating in combined systolic and diastolic heart failure.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!