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Related Concept Videos

Regulation of Stroke Volume01:27

Regulation of Stroke Volume

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The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
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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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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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Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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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 II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

22
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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Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
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Related Experiment Video

Updated: Sep 12, 2025

Insertion, Maintenance, and Removal of the Percutaneous Dual Lumen Cannula Right Ventricular Assist Device
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Insertion, Maintenance, and Removal of the Percutaneous Dual Lumen Cannula Right Ventricular Assist Device

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Risk Factors for Development of Stroke in Patients With Continuous-Flow Left Ventricular Assist Device Support as

Ioana B Florea1, Nadia H Bakir1, Meghan O Kelly1

  • 1Department of Surgery, Division of Cardiothoracic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St Louis, Missouri.

Texas Heart Institute Journal
|August 6, 2025
PubMed
Summary

Continuous-flow left ventricular assist devices (LVADs) are increasingly used for destination therapy. The HeartMate 3 device and amiodarone use were linked to reduced stroke risk, while postoperative atrial fibrillation increased it.

Keywords:
Heart-assist devicesatrial fibrillationheart failurestroke

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Area of Science:

  • Cardiology
  • Neurology
  • Medical Devices

Background:

  • Continuous-flow left ventricular assist devices (LVADs) are a growing option for destination therapy.
  • Stroke risk in destination therapy LVAD patients is not well-characterized.
  • This study evaluates stroke risk factors in a contemporary LVAD destination therapy cohort.

Purpose of the Study:

  • To characterize the stroke profile in patients receiving continuous-flow LVADs for destination therapy.
  • To identify risk factors associated with stroke onset in this patient population.

Main Methods:

  • Retrospective analysis of 311 patients receiving continuous-flow LVADs for destination therapy (2010-2020).
  • Stroke defined as imaging-confirmed, persistent neurologic deficit due to cerebral blood flow disruption.
  • Competing-risks model and Fine-Gray regression used to assess outcomes and predictors.

Main Results:

  • Estimated stroke incidence reached 27% at 5 years.
  • HeartMate 3 device use (HR 0.41) and amiodarone at discharge (HR 0.55) were associated with lower stroke risk.
  • Postoperative atrial fibrillation (AF) significantly increased stroke risk (HR 1.68).

Conclusions:

  • The HeartMate 3 device demonstrated a reduced stroke rate compared to other devices.
  • Postoperative AF remains a significant risk factor for stroke in LVAD patients.
  • Further research on protective strategies and amiodarone for AF management post-LVAD is warranted.