The Resmon First is a compact, stand‑alone mini‑oscillometer designed for fast, effort‑independent assessment of respiratory mechanics during normal tidal breathing.
 
Weighing under 500 grams and engineered for point‑of‑care use, it enables clinicians to perform reliable oscillometry (FOT) testing in virtually any setting - from specialist clinics to primary care and bedside environments.
 
Using a patented fan‑based system, the First measures respiratory impedance (resistance and reactance), and breathing pattern parameters to support the detection of peripheral and central airway dysfunctions. Its intuitive touchscreen interface, integrated pulse oximetry, and automatic artifact rejection make it an accessible tool for routine respiratory evaluation.
 
Key Features:
 
Truly portable, stand-alone system
Rechargeable battery powered, <500 g - ideal for mobile or multi-site use
Long lasting battery for over 50 consecutive measurements or over 15 days standby
 
Patented fan-based oscillometry technology - for measurement of respiratory impedance and breathing patterns
 
Effort-independent testing using automated tidal breath acceptance and artifact rejection
 
Integrated pulse oximetry for SpO2 and heart-rate checks
 
Built-in triaxial accelerometer - to ensure correct head and neck positioning during testing
 
Detachable breathing pathway for easy cleaning and disinfection
 
Measured Parameters:
 
Oscillometry (FOT) Metrics:
Within-breath Resistance (Rrs) - Total, Inspiratory, and Expiratory
Within-breath Reactance (Xrs) - Total, Inspiratory, and Expiratory
Area of Reactance (AXrs)
Tidal Expiratory Flow Limitation (EFLt, ΔXrs)
Minute ventilation (VE) for quality control
 
Spot-check Metrics:
SpO2
Heart Rate