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Author(s):
Tasneem Z Naqvi
Added:
3 years ago
Congestive heart failure (CHF) is the number one hospital discharge diagnosis for older adults and the leading cause of hospital readmissions, reflecting poor quality of life for patients and increased healthcare resource use, and is the cause of 300,000 deaths annually.1 Cardiac resynchronization therapy (CRT) has become a new effective treatment modality in those with drug-resistant advanced…
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Author(s):
Mathew S Maurer
Added:
3 years ago
Cardiac output (CO) is a fundamental measure for the assessment of cardiac performance and is applied widely to detect the presence of cardiovascular disease and monitor its progression, as well as to monitor patients in challenging hemodynamic circumstances and to optimize therapy. CO is a key parameter in characterizing a patient’s hemodynamic state. For example, a notable characteristic of…
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Author(s):
Jagmeet P Singh
Added:
3 years ago
Cardiac resynchronization therapy (CRT) has achieved widespread approval as a safe and efficient therapeutic strategy for medically refractory congestive heart failure (CHF). The standard indications for CRT include patients with advanced heart failure and evidence of systolic dysfunction (ejection fraction [EF] ≤35%), conduction tissue disease (QRS duration ≥120ms), and marked cardiac symptoms …
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Author(s):
Matthew F Yuyun
,
Ghulam Muqtada Chaudhry
Added:
3 years ago
Cardiac pacing has evolved considerably over the years from its initial introduction as a lifesaving measure by asynchronous ventricular pacing. Pitfalls of ventricular-only pacing were recognized relatively early, which led to the introduction of atrioventricular (AV) synchronous pacing that was subjected to rigorous clinical studies.1 A meta-analysis of major pacing mode trials revealed that AV…
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Author(s):
Malcolm M Bersohn
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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Author(s):
Malcolm M Bersohn
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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Author(s):
Gustavo A Lopera
,
Anne B Curtis
Added:
3 years ago
Cardiac pacing remains the only effective treatment for patients with symptomatic atrioventricular block (AVB). However, recent concern over the detrimental effects of chronic right ventricular (RV) pacing has motivated clinicians to look into the role of cardiac resynchronization therapy (CRT) in this group of patients. Chronic RV pacing causes ventricular dyssynchrony, which may lead to atrial…
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Author(s):
Henry M Spotnitz
,
T Alexander Quinn
Added:
3 years ago
Surgeons have contributed studies of the pathophysiology and treatment of arrhythmias in experimental animals and patients during thoracotomy. This research has involved epicardial1 and endocardial2 pacemakers and implantable cardioverter–defibrillators (ICDs).3 Surgeons helped to define the mechanisms and ablation methods for supraventricular arrhythmias (including Wolff-Parkinson-White syndrome…
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Peter Illes
Job title: Interventional Cardiologist
Author
Author(s):
Nico A Blom
Added:
3 years ago
Cardiac resynchronization therapy (CRT) using biventricular pacing has been proven to be effective in adult patients with left ventricular (LV) systolic dysfunction and QRS prolongation. In this group of patients, CRT improves exercise tolerance, symptoms of heart failure and all-cause mortality.1 In addition, there is growing evidence that inter- and intra-ventricular dyssynchrony induced by…
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