Cognitive Function and Telemedicine-based, Village Doctor-led Care for Atrial Fibrillation
Key result
Telemedicine-based, village doctor-led AF care reduces major cardiovascular events across all cognitive strata.
- P=0.336
- n=1,039
Why the study?
Cognitive impairment is common in older patients with AF, but whether baseline cognitive function modifies the effectiveness of telemedicine-based, village doctor-led integrated care was unknown.
Does telemedicine-based, village doctor-led integrated care reduce cardiovascular events in older rural patients with atrial fibrillation regardless of baseline cognitive function?
Study Design
Type
RCT (n=1,039)
Randomization
cluster-randomized
Multicenter
Yes
Structured PICO
Does telemedicine-based, village doctor-led integrated care reduce cardiovascular events in older rural patients with atrial fibrillation regardless of baseline cognitive function?
P
Population
1,039 rural adults aged ≥65 years with atrial fibrillation, categorized by baseline cognitive function.
I
Intervention
Telemedicine-based, village doctor-led integrated AF care
C
Comparator
Usual care
O
Outcome
Composite of cardiovascular death, all stroke, hospitalization for worsening heart failure or acute coronary syndrome, and emergency visits for AFcomposite
Main Result
p-value: p=0.336
A telemedicine-based, village doctor-led integrated care model effectively reduces cardiovascular events in older rural patients with atrial fibrillation, irrespective of their baseline cognitive function.
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Key expert perspectives
Captured external expert commentary on this paper, strongest first. Original sources are linked where available.
“The magnitude of the reduction in serious cardiovascular events in patients in the intervention group is impressive. Our results indicate that the telemedicine-based, village doctor-led, AF specialist-supported intervention was effective and is a feasible and sustainable implementation strategy that could be scaled-up to improve the management of atrial fibrillation in the older population across rural China and in other low-and-middle income countries with limited health-care access.”
“Elderly patients with AF in rural China are difficult to reach due to their low educational level, limited access to information technology, long travel time to hospitals, and travel difficulties. The only way we can reach them is to empower village doctors to provide good quality chronic disease care.”
“Rural AF patients are predominantly elderly, often with low economic income, weak health awareness, and insufficient family support, which poses challenges for chronic disease management.”
Implication
Supports telemedicine village doctor-led care for rural older AF patients; extends RCT evidence across cognitive strata.
Abstract
BACKGROUND AND AIMS: Cognitive impairment is common among older patients with atrial fibrillation (AF). We aimed to evaluate whether baseline cognitive function modifies the effectiveness of a telemedicine-based, village doctor-led integrated care in older patients with AF. METHODS: This was a post hoc subgroup analysis of the MIRACLE-AF cluster-randomized trial conducted across 30 village clinics in China from December 2020 to May 2024. Rural participants aged ≥65 years with AF received telemedicine-based, village doctor-led integrated AF care or usual care. Participants were categorized by baseline Mini-Mental State Examination (MMSE) score into severe cognitive impairment (MMSE <18), mild-to-moderate cognitive impairment (MMSE 18-23), and preserved cognition (MMSE ≥24). The primary outcome was a composite of cardiovascular death, all stroke, hospitalization for worsening heart failure or acute coronary syndrome, and emergency visits for AF. RESULTS: Among 1,039 participants enrolled in the MIRACLE-AF trial (mean [SD] age, 75.8 [5.7] years; 460 women [44.3%]), 1,028 (98.9%) had baseline MMSE assessed (388 with MMSE <18, 305 with MMSE 18-23, and 335 with MMSE ≥24). Compared with control, the intervention reduced the risk of the primary outcome among patients with MMSE 18-23 (adjusted hazard ratio [HR], 0.56; 95% CI, 0.34-0.92), MMSE ≥24 (adjusted HR, 0.55; 95% CI, 0.32-0.93), and MMSE <18 (adjusted HR, 0.86; 95% CI, 0.54-1.35). P for interaction was 0.336. CONCLUSION: A telemedicine-based, village doctor-led integrated care model was associated with favorable outcomes across baseline cognitive strata, warranting further evaluation among cognitively vulnerable adults with AF in rural settings. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov (identifier NCT04622514).
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Cite This Study
Li et al. (2026) conducted an RCT in atrial fibrillation (n=1,039). telemedicine-based, village doctor-led integrated care vs. usual care was evaluated on composite of cardiovascular death, all stroke, hospitalization for worsening heart failure or acute coronary syndrome, and emergency visits for AF (p=0.336). Telemedicine-based, village doctor-led care reduced adverse cardiovascular events across cognitive strata, with HRs ranging from 0.55 to 0.86 and no significant interaction (P for interaction=0.336).