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Products / FeNO+
Exhaled Nitric Oxide


Accurate and Repeatable Exhaled Nitric Oxide Measurement

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The FeNo+ is device for the measurement of exhaled Nitric Oxide (NO ppb), the instrument has multiple flow setting, the sample is collected after a washout volume in sample bag that is in a re-circulation analysis circuit.

Endogenous Nitric Oxide is produced when there is inflammation in the airways, the bronchial test performed at 50 ml/s is indictive of this inflammation.

The additional flows on 100ml/s and 150 ml/s expands to Alveolar Nitric oxide measurements with discreate samples at different lung volumes.

With a nasal catheter the device further extends to Nasal inflammation, this uses a dual function with the subject breathing through a flow restrictor at 350ml/s to maintain the Velum is closed whilst the nasal bung then enables sampling from a closed nasal cavity.

The use if Nitric Oxide measurement is widely used in early detection and management of Asthma also has proved essential in the assessment of Primary Ciliary Dyskinesia (PCD).

The FeNO + also allows the ability to include a Spirometry option for more traditional methods of following the medication applied to Asthma management and COPD subjects.

The FeNO+ can be combined with the following devices:

  • Micro 5000 spirometer
  • Micro 6000 spirometer
  • BodyBox plethysmograph
  • HypAir pulmonary function testing system
  • SpiroAir volumetric pulmonary function testing system
  • Ergocard CPX exercise testing system
  • Resmon Pro V3 forced oscillation technique

Beside bronchial and alveolar Nitric Oxide measurement, several options can be added in the FeNO+.

  • Nasal NO: This test is used to measure the NO concentration in the nasal cavity. The procedure is as follows:
    • Patient connects a catheter to one of their nostrils.
    • Air from the nasal cavity is continuously analyzed by the NO electrochemical sensor.
    • Throughout the analysis, patient breathes through an expiratory brake so that the velum is closed to prevent any contamination of nasal air with bronchial air.
  • Spirometry: complete basic spirometry measurement, with Forced Vital Capacity, Slow Vital Capacity, Maximum Voluntary Ventilation and Minute Tidal Ventilation including bronchial provocation testing software. The system includes high precision, reliable, accurate, and stable gold-standard Lilly heated pneumotachograph with no moving parts, allows flow measurement from 0 to 15 l/s and integrates weather station (temperature and barometric pressure) for BTPS correction of the volume.

Test Modes (standard)

  • Bronchial NO
  • Alveolar NO
  • ABG: Arterial Blood Gas Entry

Additional Test Mode (optional)

  • Nasal NO
  • Spirometry: SVC, FVC, MVV, Vmin

Software features (standard)

  • Bronchial Provocation Software
  • ATS/ERS Criteria Checklist
  • MySQL Database
  • Pediatric Incentives
  • Report Designer
  • Trend Reports
  • User-Defined Predicteds

Additional Software Features (optional)

  • PDF Report Exportation
  • Numerical Data Exportation (XLS, TXT, XML)
  • HL7 Interface Software

An Integrated System

Expair Cardiorespiratory Diagnostic Software
  • Intuitive and user-friendly interface
  • Choice of languages and units of measurement
  • Full calculation function, display of calculation points with manual correction capability
  • Quality control automated software, diagnostic functions and full program control
  • Predicted value editor, new interpretation algorithm based on LLN, ULN, Z-score and percentile.
  • Trend tabular data reporting of any parameter
  • Results export capabilities (PDF, TXT, XML) for research or integration to Hospital Information System
  • Report designer, comments and offline input
HL7 Interface Software

Our HL7 interface software allows any number of networked systems to exchange data with the electronic medical records (EMR) system.

  • Electronic medical record interface using latest HL7 standards with either unidirectional or bidirectional capability

Flexible access allows physicians to view and interpret patient results from any location on the facility’s network.

preVent® Flow Sensor for Simplicity and Accuracy

Our proprietary preVent® flow sensor saves time between patients and provides maximum infection control compared to other pneumotach devices.

  • Eliminates warm-up or flow recalibration between patients.
  • Simple snap in setup contains no moving parts or electronics for maximum infection control.
  • Options to use with a filter (for PFT), sterilize, or discard, making it extremely versatile and cost effective.
  • Meets ATS/ERS standards and specifications.


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