Stethophone

Stethophone AI Phonoscopy for rapid assessment of structural and rhythmic issues

Swipe, save, and follow for weekly deep dives! 🔍
04/01/2026

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

03/30/2026

Why record the heart sound from all 8 listening sites?

🟢Anatomy matters: The heart’s 4 chambers and valves produce distinct sounds that travel differently through your chest.

🟢Location-specific sounds: Each valve is best heard in specific areas. For instance, the mitral valve at the heart’s apex, and the aortic valve at the second right intercostal space.

🟢Spotting pathologies: Some heart conditions only show signs at certain sites.

🟢Complete heart health picture: Recording from all 8 sites helps you detect even minor abnormalities.

🟢Accurate diagnosis: Comparing sounds from different sites helps differentiate normal and abnormal noises.

🟢Sound conduction check: It also allows you to assess how well sounds travel through tissues.

🟢Easy to use: Stethophone includes simple instructions to guide you through recording heart sounds from all 8 sites.

03/25/2026

Understanding Cardiac Mechanics: A closer look at the synchronized function of the heart’s four valves. This video illustrates their precise opening and closing during the systolic and diastolic phases. 🎓🫀

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).

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

🥳March is , a perfect occasion to celebrate women's achievements in the field of cardiology. We are grateful for these ...
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.

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-pr...
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.

03/02/2026

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.

This is the sound of a mechanical mitral valve. Swipe, save this case, and follow for new clinical breakdowns every week...
02/27/2026

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

Heart sound analysis remains a cornerstone of cardiac diagnostics. However, until recently, its accuracy has been limite...
02/25/2026

Heart sound analysis remains a cornerstone of cardiac diagnostics. However, until recently, its accuracy has been limited.
The main challenge is simple: human hearing has natural constraints.
• Some heart sounds are extremely faint or fall outside the most sensitive range of our hearing.
• Others are too complex to interpret reliably by ear alone.

Sound visualization helps bridge this gap.
There are two primary approaches:
- Conventional waveform visualization (oscillogram)
- Spectrogram

Spectrograms are especially powerful when used alongside real-time listening, allowing clinicians to both hear and see subtle acoustic patterns.

Swipe through the carousel to learn more.
👇Share your thoughts in the comments.

Heart sound analysis remains a cornerstone of cardiac diagnostics. However, until recently, its accuracy has been limite...
02/25/2026

Heart sound analysis remains a cornerstone of cardiac diagnostics. However, until recently, its accuracy has been limited.
The main challenge is simple: human hearing has natural constraints.
• Some heart sounds are extremely faint or fall outside the most sensitive range of our hearing.
• Others are too complex to interpret reliably by ear alone.

Sound visualization helps bridge this gap.
There are two primary approaches:
- Conventional waveform visualization (oscillogram)
- Spectrogram

Spectrograms are especially powerful when used alongside real-time listening, allowing clinicians to both hear and see subtle acoustic patterns.

Swipe through the carousel to learn more.
👇Share your thoughts in the comments.

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St. John's, NL

Website

https://usp.onelink.me/eiUI/qoi4qt9v, https://www.linkedin.com/company/sparrow-bioacoustics

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