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TRUVACE RECORD VERSION
record: TRV-2026-1157
version: 3
kind: revised
reason: Editorial pass: sharper headline; filed as context: no real AI gain or problem (gain activity_only, problem absent).
timestamp: 2026-11-04T09:55:42.836027Z
status: published
lens: general
sector: health
headline: Multiscale model calibrated with a Bayesian algorithm predicts long-term outcomes of treatments for mitral valve regurgitation in animal models
dek: In primary mitral valve regurgitation (MR), a failing valve induces volume overload (VO) of the left ventricle (LV), triggering neurohormonal responses and myocardial remodeling. Surgical valve repair is the most effective therapy for MR, improving symptoms and in some patients reversing cardiac hypertrophy. However, at least 20% of patients develop postoperative impairment of LV function with detrimental effects on long-term outcomes, with no known cause. Many MR patients receive pharmacological treatment to al…
gain_title: A Bayesian-calibrated multiscale model predicted long-term outcomes of mitral regurgitation treatments in animal models, integrating data from 76 studies.
problem_title: (none)
trace_subject: (none)
gain_reading: A Bayesian-calibrated multiscale model predicted long-term outcomes of mitral regurgitation treatments in animal models, integrating data from 76 studies.
gain_evidence: (none)
problem_reading: (none)
problem_evidence: (none)
quick_read: In primary mitral valve regurgitation (MR), a failing valve induces volume overload (VO) of the left ventricle (LV), triggering neurohormonal responses and myocardial remodeling. Surgical valve repair is the most effective therapy for MR, improving symptoms and in some patients reversing cardiac hypertrophy.

However, at least 20% of patients develop postoperative impairment of LV function with detrimental effects on long-term outcomes, with no known cause. We calibrated the model using the Markov chain Monte Carlo algorithm, a machine learning method, to integrate data from 76 studies of experimental VO in animals.
limitation: 
tag: Context
key_points: In primary mitral valve regurgitation (MR), a failing valve induces volume overload (VO) of the left ventricle (LV), triggering neurohormonal responses and myocardial remodeling. | Surgical valve repair is the most effective therapy for MR, improving symptoms and in some patients reversing cardiac hypertrophy. | However, at least 20% of patients develop postoperative impairment of LV function with detrimental effects on long-term outcomes, with no known cause.
rundown: In primary mitral valve regurgitation (MR), a failing valve induces volume overload (VO) of the left ventricle (LV), triggering neurohormonal responses and myocardial remodeling. Surgical valve repair is the most effective therapy for MR, improving symptoms and in some patients reversing cardiac hypertrophy.

However, at least 20% of patients develop postoperative impairment of LV function with detrimental effects on long-term outcomes, with no known cause. Many MR patients receive pharmacological treatment to alleviate symptoms, with drugs that alter cardiac function, hemodynamics, and molecular pathways that influence cardiac remodeling.
sources:
- peer_reviewed | Biomechanics and Modeling in Mechanobiology | https://doi.org/10.1007/s10237-026-02123-0 | 2026-09-20
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SHA-256 hash

90302a1dcde98bf5d1dfa7e23c94eb1803bb6f42576d2d99f0a0b7ba336b2821

Previous version’s hash

b426ecda9a9fc2f17d6dcea5d8948bb64e3be7f168289317681c247f36f3f5ba