About 90% children in preschool age have middle ear effusion. (2)Fluid accumulates in the middle 
ear may be serous or mucoid. This study aims to evaluate the type of fluid in middle ear effusion and 
study if there is a relation between it and data obtained from history, operative notes and 
investigations of patients. Patients and methods: A retrospective study based on analysis of data
(history, operative notes, and investigation) of 225 patients who were undergone myringotomy with 
insertion of ventilation tubes in the period from February 2018 to January 2020 to detect If the patient 
is asthmatic or allergic rhinitis or both ,preoperative medication ,degree of hearing from audiogram 
And Type of fluid in the middle ear. Results: There were 83 (36.9%)males and 142(63.1%) females.
In100(44.4%) patients, type of fluid in middle ear was glue while serous in 125(55.6%) patients. 
24(10.7%) patients were asthmatic while 63(28%) patients were allergic rhinitis. 85(37.8%) patients 
received systemic antihistaminic/decongestant drugs. There is a significant positive correlation (+R) 
between glue and each allergic rhinitis. Conclusion: Antihistaminic/ decongestant drug is correlated 
with mucoid middle ear effusion ,so it's better to avoid it as a line of treatment of middle ear effusion.
Moderate hearing loss is correlated with mucoid ear effusion, so audiometry in follow-up of patients 
with MEE is very important and may change the opinion of conservative treatment to surgical 
treatment.