10.6M
Americans with clinically significant VHD
ACC/AHA 2021
Extending Cardiovascular
Detection Infrastructure
A regulated Software as a Medical Device platform designed for upstream patient encounters
Health systems interact with large patient populations outside cardiology. Embedding upstream detection into routine workflows surfaces latent signals, structures clinical data, and supports more effective patient routing.
This improves referral precision, strengthens patient mix, and captures clinical and program value that would otherwise remain outside the system.
The Upstream Detection Gap
The next phase of cardiovascular program growth will be driven by upstream detection, patient identification and routing efficiency.
Healthcare systems generate strong diagnostic signals, but they are concentrated too far downstream and rarely available where initial routing decisions are made.
This is where patient mix is shaped, and where small improvements in flow and structured data capture can scale into meaningful clinical and economic impact.
Without upstream detection infrastructure, referral pathways are driven by limited and inconsistent input, leading to inefficiency, capacity strain, suboptimal patient mix, program losses, and delayed care.
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~ 1 M
New patients reach clinical significance annually
Consistent incidence
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50%
AS patients undiagnosed past age 65
PREVUE Valve 2025
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< 30%
Upstream encounters producing a cardiac signal
Detection gap
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2-5 years
Typical delay from onset to program visibility
PARTNER Trial
A Regulated Cardiac Signal Analysis Platform
Delivered through smartphones already embedded in clinical environments.
Stethophone Pro is a regulated Software as a Medical Device platform designed to extend cardiovascular detection infrastructure into upstream patient encounters.
Operating through clinical smartphone programs, cardiac findings are captured early in the care pathway - becoming structured, actionable signals that support patient routing for cardiology and structural heart programs.
Population in health system
Millions of patients
Detection Opportunity
Upstream clinical encounters
- Primary care
- Urgent care
- Pre-op
- Hospital intake
Bioacoustic signal detection
Stethophone AI-phonoscopy
Structured triage signal
Objective cardiac signal evidence
Optimized
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Echocardiography referral
Diagnostic imaging -
Valve disease diagnosis
Structural heart evaluation -
TAVR / SAVR program
Intervention and follow-up
Deep Heart Sound Characterization
Transforming cardiac sounds into structured clinical signals
Stethophone Pro performs deep heart sound characterization, analyzing cardiac acoustic patterns and translating them into interpretable clinical outputs.
Using AI Phonoscopy, the platforms evaluates cardiac sound and generates findings that support clinical interpretation, patient routing, and downstream decision making.
This approach enables cardiovascular programs to recognize patterns earlier in the care pathway - patterns that might otherwise remain transient within routine examinations.
Cardiac Sound
Captured during routine clinical evaluation.
At this stage, cardiac cycles are obscured by ambient noise, respiratory sounds, and mechanical interference.
Deep Heart Sound Characterization
Transforms cardiac sounds into clinically interpretable findings through advanced signal processing.
Clinical Output
Structured cardiac signal with labeled features for clinical use.
Enterprise Deployment
Designed to integrate seamlessly into existing clinical mobile device programs and institutional workflows.
By operating through smartphones already deployed across health systems, Stethophone Pro extends detection infrastructure without adding operational burden.
This enables scalable upstream detection, consistent data structuring, and reliable signal generation across distributed care settings. Which is critical for improving patient routing and maintaining real-world adoption.
Avoiding typical equipment burdens:
- Charging and Power
- Device Tracking
- New Cleaning Protocols
- Equipment Ownership
AI Phonoscopy
A cardiac signal analysis framework designed for scalable detection infrastructure.
AI Phonoscopy is Sparrow's foundational framework for interpreting cardiac sound through structured acoustic analysis.
The system transforms bioacoustic input into standardized, clinically meaningful signals to enable upstream detection, consistent data structuring, and integration into patient routing pathways across a wide range of cardiovascular indications.
Initial indications are delivered through regulated modules, while the platform architecture supports continuous expansion of detection capabilities over time.
Increasing Flow and Precision within a Strategic Service Lines
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- Urgent Care
- Pre-Admission/Anesthesia Testing
- Hospital Admission/Intake
- Internal Medicine
- Primary Care
Distributed care settings to the list
upstream cardiac signal detection (AI phonoscopy / bioacoustic analysis)
structured triage / routing signal
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- Cardiovascular Care Routing
- Structural Heart Program Yield
- Initial Diagnostics Cascade
- Valve Program Continuity
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Program Outcomes:
- Earlier intervention
- Lower mortality
- Fewer emergency admissions
- Improved care coordination
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Cardiovascular Program Gravity:
- Program reputation
- Referral capture
- Regional patient inflow
- Structural Heart Program Yield
Detection Across the Care Network
Extending cardiac detection infrastructure beyond specialist environments.
Leading programs increasingly recognize upstream detection as a core lever for growth, enabling earlier identification of appropriate patients and more effective patient routing into established care pathways.
Earlier signal generation expands imaging activity, strengthens longitudinal surveillance, improves referral precision, and enhances patient mix - ultimately supporting procedural volumes and program sustainability.
The economic and patient impact extends beyond structural heart interventions, influencing the broader cardiology service line across the network.
Developed with Leading Cardiovascular Clinicians and Researchers
Institutional Deployment
Programs exploring deployment models or clinical pathway integration can request additional materials.
Health systems can integrate Stethophone Pro into existing clinical workflows and mobile device programs with minimal operational change.
Deployment supports upstream detection within routine patient encounters, generating structured cardiac signals that feed into patient routing and escalation pathways.
Request a deployment brief outlining workflow placement, governance considerations, and how structured cardiac signal analysis integrates into referral and care pathways.
