NIOX FeNO VERO Quick Reference Manual Download Page 3

NIOX VERO® may only be operated as directed in the NIOX VERO® user manual by trained healthcare professionals.  
Trained status is achieved only after careful reading of the user manual. Read the entire user manual and make certain that 
you fully understand the safety information.

Important information regarding NIOX VERO® 
NIOX VERO® is a portable system for the non-invasive quantitative simple and safe measurement of Nitric Oxide (NO) in 
human breath (FeNO) and Nasal Nitric Oxide (nNO) in the aspirated air from the nasal cavity. For FeNO: Nitric Oxide is 
frequently increased in some inflammatory processes such as asthma and decreases in response to anti-inflammatory 
treatment. FeNO measurements should be used as part of a regular assessment and monitoring of patients with these 
conditions. NIOX VERO® FeNO is suitable for patients age 4 and above. As measurement requires patient cooperation, some 
children below the age of 7 may require additional coaching and encouragement. NIOX VERO® FeNO can be operated with 
2 different exhalation times, 10 seconds and 6 seconds. The 10 second mode is the preferred mode. For children who are not 
able to perform the 10 second test, the 6 second is an alternative. The 6 second test should be used in caution with patients 
over the age of 10.  It should not be used in adult patients. Incorrect use of the 6 second exhalation test may result in falsely 
low FeNO.

How to perform a  

FeNO measurement

Empty lungs

by breathing out thoroughly

1

Inhale deeply

though mouthpice to total lung capacity

2

Exhale slowly

through mouthpiece and follow on-screen 
display to complete the test

3

See result

FeNO measurement will appear in 
approximately 1 minute 

4

Empty lungs

by breathing out thoroughly

1

Inhale deeply

though mouthpice to total lung capacity

2

Exhale slowly

through mouthpiece and follow on-screen 
display to complete the test

3

See result

FeNO measurement will appear in 
approximately 1 minute 

4

Example with 

cloud animation

Pressure correct

Pressure too strong

Pressure too weak

Exhale until the cloud 

has passed the flag

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