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Related Experiment Video

Updated: Sep 3, 2025

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Regional Left Ventricular Fiber Stress Analysis for Cardiac Resynchronization Therapy Response.

Mohammad Albatat1,2, Henrik Nicolay Finsberg3, Hermenegild Arevalo3

  • 1Intervention Centre, Oslo University Hospital, Oslo, Norway. malbatat.90@gmail.com.

Annals of Biomedical Engineering
|July 28, 2022
PubMed
Summary

A new measure, standard deviation of regional wall stress at mitral valve closure (SD_MVC), can predict heart failure patient response to cardiac resynchronization therapy (CRT). Lower SD_MVC indicates better CRT response, potentially improving patient selection.

Keywords:
Cardiac resynchronization therapyComputational cardiologyElectrophysiology heart failure

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Computational Modeling

Background:

  • Cardiac resynchronization therapy (CRT) benefits select heart failure (HF) patients.
  • High non-response rates (over 30%) persist due to suboptimal patient selection and optimization.
  • Novel methods are needed to accurately predict CRT response.

Purpose of the Study:

  • To evaluate a novel computational measure for assessing CRT response in heart failure patients.
  • To investigate the correlation between regional left ventricular wall stress and CRT outcomes.
  • To identify improved pre-procedural criteria for CRT patient selection.

Main Methods:

  • Utilized a computational modeling framework to calculate regional left ventricular wall stress.
  • Measured the standard deviation of regional wall stress at mitral valve closure (SD_MVC) in seven CRT patients and seven healthy controls.
  • Compared SD_MVC between groups and correlated it with long-term CRT response (end-diastolic volume reduction).

Main Results:

  • SD_MVC was significantly lower in healthy controls compared to CRT patients.
  • Lower SD_MVC values correlated with better long-term CRT response in patients.
  • The single non-responder exhibited the highest SD_MVC, suggesting its predictive value.

Conclusions:

  • SD_MVC is a promising novel metric for predicting CRT response in heart failure patients.
  • This measure may enhance current patient selection criteria for CRT implantation.
  • Further validation in larger patient cohorts is warranted.