There is a connecting tract (known as Eustachian tube) between the nasopharynx
& middle ear through which infection can spread to ear.
Also obstruction to this Eustachian tube can lead to ear symptoms by un-equalisation of pressure between the nasopharynx & middle ear.
The management consists of:
1. Nasal decongestants to relieve ET tube obstruction
2. Antihistamines to provide symptomatic relief.
If symptoms still persist...it will be better to consult an ENT specialist
Wishing you a speedy recovery.
Thanks & take care.