Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Open and closed-loop control systems01:17

Open and closed-loop control systems

1.1K
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
1.1K
PD Controller: Design01:26

PD Controller: Design

362
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
362
Motor Unit Stimulation01:20

Motor Unit Stimulation

2.2K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
2.2K
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

36
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
36
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

31
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
31
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

47
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...
47

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The choice of mitral valve surgery type and mid-term outcomes in patients up to 70 years of age: Results of the AUTHEARTVISIT study.

JTCVS open·2026
Same author

Large Mitral Annuli in Transcatheter Mitral Valve Replacement: A Marker of Advanced Disease or Limited Benefit?

The Annals of thoracic surgery·2026
Same author

A. Kocher technique as default approach to aortic root enlargement.

JTCVS techniques·2026
Same author

Machine Learning Based Prediction of Hospital Mortality in Post-Cardiotomy Cardiogenic Shock with Mechanical Support.

ESC heart failure·2026
Same author

Association of surgeon sex with postoperative adverse outcomes in adult cardiac surgery: a nationwide cohort study.

Journal of cardiothoracic surgery·2026
Same author

Shaping the Flow: Impact of Blade Shape on Performance and Hemocompatibility in Rotodynamic Blood Pumps.

Artificial organs·2026
Same journal

Incidence of delirium in hospitalized heart failure patients: a systematic review and meta-analysis.

Frontiers in cardiovascular medicine·2026
Same journal

Beyond metabolism and blood flow: toward an inflammation-metabolism axis paradigm for herbal medicine in obesity-related coronary heart disease.

Frontiers in cardiovascular medicine·2026
Same journal

Epicardial adipose tissue in cardiovascular diseases: a potential therapeutic target.

Frontiers in cardiovascular medicine·2026
Same journal

Isolated absent pulmonary valve syndrome with intact ventricular septum in a child with CHARGE syndrome: a rare case report and review of the literature.

Frontiers in cardiovascular medicine·2026
Same journal

Long-term follow-up of patients with pulmonary hypertension after catheter ablation of atrial fibrillation and atrial tachycardia.

Frontiers in cardiovascular medicine·2026
Same journal

A case report of iatrogenic coronarocameral fistula after surgical aortic valve replacement: multimodality diagnosis and intravascular ultrasound-guided left main intervention.

Frontiers in cardiovascular medicine·2026
See all related articles

Related Experiment Video

Updated: Sep 23, 2025

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study
06:58

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

Published on: November 6, 2015

9.6K

A Sensorless Modular Multiobjective Control Algorithm for Left Ventricular Assist Devices: A Clinical Pilot Study.

Martin Maw1,2,3, Thomas Schlöglhofer1,2,3, Christiane Marko2

  • 1Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.

Frontiers in Cardiovascular Medicine
|May 13, 2022
PubMed
Summary
This summary is machine-generated.

This pilot study demonstrates a new sensorless control system for Left Ventricular Assist Devices (LVADs). The system automatically adjusts pump speed, reducing suction events and improving support during activity.

Keywords:
Valsalva maneuverleft ventricular assist device (LVAD)mechanical circulatory supportorthostatic transitionsphysiological controlsmart pumpingsubmaximal bicycle ergometry

More Related Videos

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
09:20

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Published on: February 13, 2021

6.6K
Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
06:10

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock

Published on: June 12, 2021

3.4K

Related Experiment Videos

Last Updated: Sep 23, 2025

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study
06:58

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

Published on: November 6, 2015

9.6K
Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
09:20

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Published on: February 13, 2021

6.6K
Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
06:10

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock

Published on: June 12, 2021

3.4K

Area of Science:

  • Cardiovascular Engineering
  • Biomedical Engineering
  • Medical Devices

Background:

  • Contemporary Left Ventricular Assist Devices (LVADs) often operate at fixed speeds, failing to adapt to patient physiological demands.
  • Automatic physiological speed control for LVADs offers improved integration with patient physiology, optimizing support levels during varying activity.

Observation:

  • A sensorless modular control algorithm was developed for a centrifugal LVAD (HVAD).
  • The algorithm was tested in a blinded, crossover clinical pilot trial involving six patients.
  • Testing included orthostatic changes, Valsalva maneuver, and bicycle ergometry under constant speed and physiological control modes.

Findings:

  • The physiological control system successfully reduced LVAD speed and flowrate during rest, decreasing suction burden.
  • During exercise, the system increased pump speed and flowrate, though in some cases, recurring suction limited speed increases.
  • No interventions were required from hardware safety systems during control mode operation.

Implications:

  • This pilot study establishes the safety, short-term efficacy, and physiological responsiveness of a sensorless automated speed control system for centrifugal LVADs.
  • Further long-term studies are necessary to confirm improved clinical outcomes with this adaptive LVAD technology.