Stethophone Canada

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Stethophone Canada

AI Phonoscopy for rapid assessment of structural and rhythmic issues
Health Canada licensed

03/25/2026

Excited to see Sparrow at the center of an important milestone in cardiovascular disease detection. Sunnybrook Health Sciences Center and KMH Cardiology Centres Inc. have launched the first clinical trial in Canada evaluating Sparrow’s Stethophone for the early detection of aortic stenosis, a common and often underdiagnosed heart valve disease.

Using heart sounds captured through a smartphone, Stethophone supports earlier recognition of cardiac signals that may indicate aortic stenosis, helping clinicians identify patients who may benefit from further diagnostic evaluation. The platform is designed to extend disease detection capability into routine patient encounters, generating structured signals that can guide referral and testing decisions.

As evidence develops, technologies like Stethophone may help health systems address an important upstream detection gap. Large numbers of patients pass through clinical encounters each year without producing a structured cardiovascular disease signal that triggers evaluation.

Scalable tools that can capture these signals during routine care could make earlier identification of valvular heart disease more practical within existing care pathways. With an aging population and rising prevalence of aortic stenosis, expanding disease detection upstream has the potential to influence how and when patients are identified, evaluated, and ultimately treated.

🔗 Read more (link in stories)

03/16/2026

What Does a Normal Heart Sound Like?
🔵 The Stethophone spectrogram displays the bioacoustic signals of a healthy heart. Sound segmentation allows for the identification of the primary components of the cardiac cycle:

S1 (First Heart Sound): Corresponds to the closure of the mitral and tricuspid valves.
S2 (Second Heart Sound): Higher-pitched and shorter than S1; occurs with the closure of the aortic and pulmonary valves.

▪️The S1–S2 interval represents ventricular systole (shorter interval).
▪️The S2–S1 interval represents ventricular diastole (longer interval, which shortens during tachycardia).

The absence of murmurs or extra pathological sounds during diastole indicates physiological ventricular filling.

Physiological splitting of S2 during inspiration is also present.

📝 Normal variations may include:
▪️Innocent systolic ejection murmurs (e.g., due to anemia, pregnancy, or thyrotoxicosis).
▪️Physiological S3 (common in children and healthy young adults).

03/13/2026

The diagram illustrates the key stages of the cardiac cycle, reflecting the coordinated function of the heart chambers:

🔵 Atrial Systole:�
The final phase of ventricular filling.
🔵 Isovolumetric Contraction:�
A rapid increase in ventricular pressure with all valves closed, preceding ejection.
🔵 Ventricular Ejection:�
The phase during which blood is propelled into the great vessels.
🔵 Isovolumetric Relaxation and Passive Ventricular Filling:�
Diastolic phases during which the ventricles relax and prepare for the next contraction.

Within Stethophone, heart sound recordings can be analyzed and visualized as Stethograms, allowing the acoustic events of the cardiac cycle to be examined in a structured format.
Specifically, the system identifies the primary heart sounds:
🔵 S1 (First Heart Sound):�
Occurs at the onset of ventricular systole.
🔵 S2 (Second Heart Sound):�
Corresponds to the onset of diastole.

03/12/2026

Swipe, save, and follow for weekly deep dives! 🔍

03/10/2026

Emergency departments rely on structured triage systems to rapidly assess patient acuity and allocate clinical resources. One of the most widely used frameworks is the Emergency Severity Index (ESI), a five-level triage algorithm that helps clinicians prioritize care based on patient stability and anticipated resource needs.

From Level 1 (Immediate) cases such as cardiac arrest or profound hypotension, to Level 5 (Non-Urgent) presentations requiring minimal intervention, ESI provides a standardized pathway for decision-making in high-pressure clinical environments.

Because certain cardiac abnormalities may produce acoustic signals before imaging confirmation, structured triage combined with early heart sound analysis tools can support clinicians in identifying patients who may require earlier escalation in the care pathway.

Understanding how triage systems function is essential for improving patient flow, resource allocation, and timely cardiac evaluation.

📝Source: Emergency Severity Index, developed by the Agency for Healthcare Research and Quality.

03/08/2026

🥳March is , a perfect occasion to celebrate women's achievements in the field of cardiology. We are grateful for these pioneering women's contributions and hope this post will inspire you.
❤ As a company co-founded by a woman, Sparrow BioAcoustics is committed to supporting women's health and research. This commitment remains one of our top priorities.

03/06/2026

Think of a heart murmur as more than just a sound—it’s the "echo" of turbulent blood flow. Since your heart is a high-pressure pump, that signature "whoosh" doesn’t just stay put; it follows the path of flow.

Here’s why we listen in different spots:
🔼Going Up: If the Aortic valve is narrow, the sound often travels (or radiates) upward toward the neck.
🔄Going Wide: If the Mitral valve is leaking, that sound usually hitches a ride toward the armpit.

Sound follows the flow! Swipe right to see how we trace these murmurs back to the source.

03/03/2026

📱Stethophone is a regulated Software as a Medical Device platform delivered entirely through smartphones.
Because it is software based, deployment does not require manufacturing, shipping, or maintaining specialized hardware. It can be implemented through infrastructure that already exists within health systems and communities.

🫀Cardiovascular and pulmonary diseases remain among the most prevalent and costly conditions worldwide. The challenge is not awareness, it is converting early signal into structured, actionable findings that guide appropriate escalation.

When cardiac acoustic signal can be captured and structured at the point of first contact, detection moves upstream. Referral precision improves. Programs gain visibility. Health systems can extend detection capacity across distributed sites without expanding specialty headcount.

This is not about replacing clinicians. It is about converting signal into structured triage data that supports earlier recognition and more consistent care pathways.
Scalable detection infrastructure, delivered through devices people already carry.

03/02/2026

Mitral stenosis has a distinctive sound profile — a low-pitched, mid-diastolic rumble best heard at the apex using the bell of the stethoscope.

👂It is typically accompanied by an opening snap and a loud S1, together forming a classic acoustic pattern of a narrowed, restricted valve.

❗️ Rheumatic fever remains the most common cause worldwide.

🧐Key Acoustic Findings in Mitral Stenosis
- Location: Cardiac apex — fifth intercostal space, mid-clavicular line.
- Timing: Mid-diastolic murmur, with pre-systolic accentuation when sinus rhythm is present.
- Quality: Low-frequency rumble with a crescendo toward late diastole — subtle, but highly characteristic once recognized.

Associated sounds:
• Loud S1 — stiffened leaflets close with increased intensity
• Opening Snap (OS) — high-frequency sound just after S2, reflecting abrupt valve opening
Positioning: Left lateral decubitus brings the murmur closer to the chest wall and enhances audibility.
Stethoscope technique: Use the bell lightly — excessive pressure converts it into a diaphragm and filters out low frequencies.

🔵Clinical Significance
The stenotic valve obstructs flow from the left atrium to the left ventricle, leading to chronic pressure overload and left-atrial enlargement.

Patients typically present with breathlessness, fatigue, and palpitations — the latter frequently associated with atrial fibrillation as a consequence of atrial remodeling under chronic pressure overload.

Recognizing these acoustic patterns early, and placing them in the proper clinical context, is where high-fidelity phonoscopy, Stethogram visualization, and careful clinical assessment provide meaningful support in the pathway toward comprehensive cardiac evaluation.

02/27/2026

This is the sound of a mechanical mitral valve. Swipe, save this case, and follow for new clinical breakdowns every week! 🔍

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2416 Natura Drive
Halifax, NS
B4B0X3

Website

https://stethophone.com/ca/en/

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