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Added:
3 years ago
Contemporary approved echo contrast agents share a common approved indication of left ventricular opacification and enhancement of endocardial border delineation for the assessment of left ventricular function in patients with technically suboptimal echocardiograms (ECGs). The use of echo contrast agents with advanced imaging technologies has resulted in the conversion of many non-diagnostic ECGs…
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3 years ago
Permanent pacemakers have been used to treat patients with symptomatic bradycardia for 45 years. The earliest pacemakers paced only the ventricle and were used primarily for patients with complete heart block. The need for atrial pacing became apparent as pacing for sinus node dysfunction became more common. Initially, only single-chamber pacing was possible in the atrium, and this was a good…
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Added:
3 years ago
Permanent pacemakers have been used to treat patients with symptomatic bradycardia for 45 years. The earliest pacemakers paced only the ventricle and were used primarily for patients with complete heart block. The need for atrial pacing became apparent as pacing for sinus node dysfunction became more common. Initially, only single-chamber pacing was possible in the atrium, and this was a good…
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Adelino Leite-Moreira
Job title: Full Professor of Physiology, Pathophysiology & Cardiothoracic Surgery
Author
Added:
3 years ago
Introduction
Premature ventricular complexes (PVCs) in the absence of underlying structural heart disease have long been viewed as benign. Early studies with small population sizes and limited cardiac testing suggested that long-term prognosis in patients with idiopathic PVCs is similar to those in patients without other cardiac disease, and treatment was consequently limited to provide…
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Added:
3 years ago
Cardiovascular disease (CVD) afflicts greater than 70 million patients in the US alone, and accounts for over half of all deaths. Non-invasive cardiac imaging modalities are used to provide enhanced methods of diagnosis of CVD, guidance of patient-specific therapy, and prognostication of cardiac-related risk.
Non-invasive cardiovascular imaging has traditionally been stratified into two distinct…
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Added:
3 years ago
A working definition of Heart Failure (HF) was recently conceptualized by the Heart Failure Society of America as:
"a syndrome caused by cardiac dysfunction, generally resulting from myocardial muscle dysfunction or loss and characterized by LV dilation or hypertrophy. Whether the dysfunction is primarily systolic or diastolic or mixed, it leads to neurohormonal and circulatory abnormalities,…
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Added:
2 years ago
Added:
2 years ago
Added:
3 years ago
Acute heart failure (AHF) is a major and growing cause of in-hospital mortality in developed countries. The prevalence of HF in an unselected population >45 years of age is estimated to be 2% and in a population >65 years of age is estimated to be 8.8%.1,2 The combination of aging of the population in many countries and improved survival after acute myocardial infarction has created rapid…
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