Children’s FeNO and Spirometry tests

What is FeNO?

FeNO (Fractional Exhaled Nitric Oxide) is a way to check for inflammation in the airways.  You’ll be asked to breathe in fully through a mouthpiece like a straw and then blow out gently.

What is Spirometry?

Spirometry is a way of checking your lungs to see how much air they can hold and how fast you can blow this air out. We will check this before and after a dose of salbutamol (blue inhaler).

Why do we need to check this?

Spirometry can help your GP to decide whether you have asthma and how best to treat your symptoms.

Can I practice before my appointment?

You could try blowing pieces of scrunched up paper using a straw. You should try to blow out as hard and as fast as you can for as long as you can.

Can I watch a video to show me what to expect?

Yes. Please follow these links to videos about FeNO and spirometry:

 

For best results on the day, please follow this advice:

Do not take your reliever inhaler (usually blue) for 6 hours before your appointment unless you need to.

Do not take your preventer inhaler (usually brown) for 24 hours before your appointment.

***Please bring your blue inhaler and spacer with you if you have one***

Do not eat a large meal, drink a hot drink or have caffeine within 1 hour of your appointment.

No vigorous exercise for 1 hour before your appointment.

Do not eat green leafy vegetables like spinach, celery or lettuce, or eat beetroot for 3 hours before your appointment.

The appointment cannot take place if you have had a chest infection in the last 6 weeks – please call the number below to rearrange.

If your child is unwell on the day of their appointment, please call 01494 323505 to rearrange.