Company Profile

AsthmaMD Peak Flow Meter: Smartphone Application Connected Tracking Devices

Quick Answer

The AsthmaMD Peak Flow Meter records peak expiratory flow values from 60 to 850 l/min and sends readings to a smartphone app via Bluetooth Low Energy. This setup replaces handwritten logs and gives pulmonologists a shareable trend chart. The device requires no manual data entry and stores up to 100 sessions offline before the next sync.

How the Connected Tracking System Works

A turbine rotor spins as the patient exhales into the mouthpiece. An optical sensor counts revolutions and converts rotational speed into a flow rate in litres per minute. A small microcontroller timestamps the reading and pushes the value to the AsthmaMD iOS or Android app. The connection uses BLE 5.0, which draws under 15 mA during transmission. We have observed that the transfer completes in less than 2 seconds on most phones released after 2020. The app graphs the PEF number immediately and colours the zone green, yellow, or red based on the patient personal best. Because the meter has no display, the phone becomes the only dashboard. That design keeps the handheld module light at 88 grams and removes the need for a backlit LCD.

Installation, Setup, and Daily Routine

Open the AsthmaMD app, tap “Pair New Meter,” and blow into the device once while the phone is within 1.5 metres. The app asks for the patient age, height, gender, and baseline PEF value. A respiratory therapist at a clinic in Surabaya reported that five minutes of group training was enough for patients aged 12 to 65. For a daily check, the user exhales three times and the app stores the highest reading. A notification reminds the user at a fixed hour. The timestamped record includes GPS coordinates if the phone permission is granted. That can help an allergist in São Paulo spot when a drop in PEF correlates with a location or commute. Parents of asthmatic children in Lagos have told us the geotag was the feature that helped them identify a trigger near the school playground.

Data Accuracy and Clinical Validation Numbers

The metrology head reports a resolution of 10 l/min and a stated accuracy of ±5% of reading or ±10 l/min, whichever is greater. In a 2022 bench test at an independent lab in Kuala Lumpur, the AsthmaMD meter deviated by less than 6 l/min from a calibrated ATS waveform generator across 200 blows. Repeatability stayed within 3% at 400 l/min. The flow volume range covers paediatric patients who can generate just 80 l/min up to adults exceeding 800 l/min. The pressure drop at 850 l/min stays under 2.5 cm H₂O, so it does not add noticeable resistance. Those numbers matter for clinic procurement teams writing a tender in the Gulf region. The device holds a CE mark and an FDA 510(k) clearance under device class II. It passes the ISO 23747:2015 standard for peak expiratory flow meters. The app stores data in a HIPAA-compliant cloud bucket and offers PDF export.

Integration with EHR and Telemedicine Platforms

Practices that use Epic or Cerner can pull the AsthmaMD data through a FHIR R4 API. The API returns a JSON object with date, PEF value, zone flag, and device serial number. A hospital in Mexico City used that endpoint to auto-populate the respiratory therapy progress note. The integration skipped manual typing and cut the average nurse documentation time from four minutes to 40 seconds per patient. The AsthmaMD portal lets a doctor create a sub-account for a patient and view real-time readings during a video call. That workflow grew during the 2023 dengue season in Southeast Asia, when many chest physicians moved follow-ups to telehealth. The system supports three user roles: patient, caregiver, and clinician. Each role sees a different dashboard. The caregiver role is common in Riyadh, where a mother monitors two children on one phone.

Battery, Portability, and Field Conditions

A CR20