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TRUVACE RECORD VERSION
record: TRV-2026-1157
version: 2
kind: revised
reason: Direction audit: filed as a problem but describes a gain.
timestamp: 2026-10-26T06:38:42.406168Z
status: published
lens: g_space
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: Evidence-backed gain
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
prev: e35e2cc73d02392781d1e5dcb223ac588317acaf19ee7494465f4d163d516bbd

SHA-256 hash

b426ecda9a9fc2f17d6dcea5d8948bb64e3be7f168289317681c247f36f3f5ba

Previous version’s hash

e35e2cc73d02392781d1e5dcb223ac588317acaf19ee7494465f4d163d516bbd