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Related Concept Videos

Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
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Cardiomyopathy V: Interprofessional Care01:29

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Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
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Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

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Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
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Heart Failure II: Pathophysiology01:29

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Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
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Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

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Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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Related Experiment Video

Updated: Jul 28, 2025

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

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Improved prognosis after cardiac resynchronization therapy over a decade.

Francisco Leyva1, Abbasin Zegard1,2, Peysh Patel2

  • 1Aston Medical Reseach Insitute, Aston Medical School, Aston University, Aston Triangle, Birmingham B4 7ET, UK.

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
|June 2, 2023
PubMed
Summary

Cardiac resynchronization therapy (CRT) improved survival and reduced heart failure hospitalizations over the past decade in England. These positive outcomes for CRT patients occurred despite a rise in patient comorbidities.

Keywords:
Cardiac resynchronization therapyHeart failure hospitalizationMortality

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Area of Science:

  • Cardiology
  • Public Health
  • Medical Device Technology

Background:

  • Cardiac resynchronization therapy (CRT) delivery has increased significantly for heart failure (HF) patients over the last decade.
  • Understanding the impact of CRT on clinical outcomes within a public healthcare system is crucial for resource allocation and patient care.

Purpose of the Study:

  • To evaluate changes in clinical outcomes following CRT implantation from 2010 to 2019.
  • To assess the impact of an increasing patient comorbidity burden on CRT effectiveness within a national healthcare system.

Main Methods:

  • Analysis of a national database of 64,698 patients undergoing CRT implantation (CRT-defibrillation or CRT-pacing) in England between 2010 and 2019.
  • Examination of trends in CRT implantation rates, patient demographics, comorbidities (hypertension, diabetes, chronic kidney disease), and Charlson Comorbidity Index (CCI).
  • Statistical analysis of 30-day, 1-year, and 2-year mortality rates, and mortality or HF hospitalization, with adjustments for multiple clinical factors.

Main Results:

  • CRT implantations increased by 76% from 2010-2011 to 2018-2019.
  • The prevalence of key comorbidities (hypertension, diabetes, chronic kidney disease) and a higher CCI (≥3) significantly increased among patients receiving CRT.
  • Despite the rising comorbidity burden, significant reductions were observed in 30-day mortality (1.43% to 1.09%), 1-year mortality (9.51% to 8.13%), and 2-year mortality or HF hospitalization (HR: 0.59).

Conclusions:

  • CRT implantation has led to improved survival and reduced heart failure hospitalizations over the past decade within the English public health system.
  • The prognostic benefits of CRT have been maintained despite a notable increase in the complexity of patient comorbidities.
  • These findings underscore the sustained value of CRT in managing heart failure patients within a large-scale healthcare setting.