Evidence and impact

What we have delivered. What we are learning. What changes for patients.

HeartLINK+ evaluates the complete cardiovascular-care pathway—from first access and diagnostic quality to interpretation, referral completion and follow-up.

Read the evidence in context

Different evidence answers different questions.

Service delivery

What has been implemented and delivered: assessments, diagnostics, facilities and workforce training.

Operational performance

How reliably the pathway functions: quality, turnaround, completion and patient drop-off.

Internal validation

Performance in datasets or analyses supported by HeartLINK+; distinct from independent evaluation.

Independent evaluation

External academic or scientific assessment through prospectively designed studies and independent analysis.

Service volume demonstrates delivery experience. It does not, by itself, establish improved patient outcomes or independent clinical effectiveness.

Delivery experience in Ghana

A cardiovascular pathway put into practice.

Service delivery · Through 30 August 2026
9,000+Cardiovascular diagnostic assessments
5,500+AI-enabled stethoscope assessments
1,850+ECGs
1,400+Echocardiograms
120+Health workers trained

Source: Cumulative program activity in Ghana reported by HeartLINK+, through 30 August 2026. A patient may receive more than one diagnostic service; these totals are not unique patient counts or independently validated patient outcomes.

Delivery and diagnostic experience
What remains to be established

What we know—and what we still need to learn.

Current experience

Cardiovascular assessments and diagnostics delivered across facilities, frontline workforce training, internal triage validation and high test completion among people who reached the hub.

Evidence still needed

Independent external validation, prospective clinical utility, improved referral completion, long-term engagement, cost-effectiveness and cardiovascular outcomes.

Explore in detail

Three views of the pathway.

Service delivery

Delivery & diagnostic experience

Service activity, study context and the measures needed to understand clinical utility.

Explore delivery
Internal validation

H-TRIAGE™ & INSIGHT

What has been tested internally, and the questions remaining for independent evaluation.

Explore validation
Operational performance

The connection-to-care gap

Where patients leave the pathway, and how implementation learning can change delivery.

Explore implementation learning
The evidence-development pathway

From internal validation to independent evidence.

Explore the evaluation stages
  1. Delivery evidence

    Completed services, workforce training and operating experience.

  2. Internal validation

    H-TRIAGE™ performance, diagnostic yield and implementation learning.

  3. Prospective clinical utility

    Appropriate evaluation, management change, completion and closure.

  4. Independent evaluation

    External academic analysis and prospectively designed studies.

  5. Multi-country validation

    Performance across populations, facility types and health systems.

  6. Patient outcomes

    Treatment, risk-factor control, clinical events and sustained engagement.

This is the evaluation pathway, not a claim that every stage has been completed.

Research portfolio

One implementation platform.
Multiple evidence questions.

View the research portfolio
ProgramResearch focus
LISTENAI-enabled auscultation, cardiovascular findings and triage
INSIGHTWorkforce-enabled echocardiography, quality and learning curves
I-HEARTProspective evaluation of appropriate testing and linkage within 14 days
VALIDATECross-country performance and generalizability
PRIME-CMPharmacy-based access, CKM assessment and hub-model comparison

HeartLINK+ research areas, summarized in September 2026. Study protocols, current status and public records can be requested from the research team; the listing does not imply completed studies or published findings.

Scientific outputs

Evidence available for scrutiny.

Ask for the study methods, reporting period, analysis cohort or available scientific materials behind a specific claim.

Request study materials

Name the result or research area you want to examine. You do not need to submit a research proposal to request information.

Governance and independence

Connected in purpose.
Separate in responsibility.

See implementation and research roles

HeartLINK+ Ghana

Clinical implementation, diagnostics, operational performance and quality improvement.

G-ACT Foundation

Research coordination, equitable-access programs and evidence generation.

Independent academic partners

Study design, independent analysis, scientific interpretation and dissemination.

Research agreements define data control, access, analysis, publication, authorship and intellectual-property protections.

Connect the next step

Build the next stage of evidence with us.

Discuss the methods and evaluation questions that could strengthen the pathway.