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Dr. Andrew Rynne
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What causes runny nose, sneezing after colonoscopy?

hi, I had a colonoscopy today and work up from the anesthesia sneezing and developed a runny nose...feels like I just caught an instant cold. I have great before the procedure. The nurse told me that the oxygen was the cause. ( I immediately needed a napkin to wipe my nose before I could sit up.
Mon, 7 Jul 2014
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Allergist and Immunologist 's  Response

Thank you for asking at HCM.

If you have not had any chronic allergy problem like allergic rhinitis, I would agree that oxygen is a possibility.

Sometimes oxygen works as irritant for nasal mucosa and this irritation causes immediate sneezing and running nose. Mostly it is self-limiting. There is nothing serious in that. You need not to worry at all.

If you have an allergic condition like allergic rhinitis in past, there are many possible allergens in a hospital environment like latex, drugs, etc. In that case taking medications like levocetirizine & montelukast helps.

Hope this will be helpful to you.

Wish you best of the health.


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