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Related Concept Videos

Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

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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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Cardiac Catheterization IV: Nursing Management01:26

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Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
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Cardiomyopathy II: Dilated Cardiomyopathy01:30

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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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Heart Failure VI: Adjunct Therapies01:22

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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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Cardiac Catheterization I: Pre-Procedure Overview01:28

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Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
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Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
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Non-transvenous ICD therapy: current status and beyond.

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Subcutaneous implantable cardioverter/defibrillators (S-ICDs) offer leadless therapy for heart rhythm disorders. New extravascular ICDs (EV-ICDs) provide similar benefits with a substernal lead, enhancing detection and pacing capabilities.

Keywords:
Anti-tachycardia pacingDefibrillationExtravascular ICDInappropriate shocksSubcutaneous ICDSudden cardiac death

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Medical Devices

Background:

  • Transvenous leads in implantable cardioverter/defibrillators (ICDs) are associated with complications like lead fracture and endocarditis.
  • Subcutaneous ICDs (S-ICDs) offer an alternative by avoiding venous access.
  • Technological advancements aim to improve ICD therapy, including pacing capabilities.

Purpose of the Study:

  • To review the current status, advantages, limitations, and future research directions for S-ICDs.
  • To introduce and discuss the novel extravascular ICD (EV-ICD) system.
  • To compare S-ICDs and EV-ICDs in terms of their therapeutic potential and technical aspects.

Main Methods:

  • Review of existing literature and clinical data on S-ICDs.
  • Analysis of preliminary animal and clinical data for EV-ICDs.
  • Comparative discussion of leadless ICD technologies.

Main Results:

  • S-ICDs have demonstrated feasibility and safety in various patient populations.
  • EV-ICDs utilize a substernal lead for potentially improved ventricular fibrillation detection and pacing.
  • Early data suggests EV-ICDs offer anti-tachycardia and temporary anti-bradycardia pacing.

Conclusions:

  • Both S-ICDs and EV-ICDs represent significant advancements in leadless ICD therapy.
  • EV-ICDs may offer expanded therapeutic options compared to S-ICDs due to pacing capabilities.
  • Further research is warranted to fully establish the long-term efficacy and safety of EV-ICDs.