A case control study of the factors associated with occurrence of aerodigestive foreign bodies in children in a regional referral hospital in South Western Uganda

A case control study of the factors associated with occurrence of aerodigestive foreign bodies in children in a regional referral hospital in South Western Uganda

BMC Ear, Nose and Throat Disorders, March 2016

26981048

Doreen Nakku, Richard Byaruhanga, Francis Bajunirwe, Imelda T. Kyamwanga

Aerodigestive foreign bodies (ADFB) in children are a common emergency in ENT clinics globally. The aim of this study was to determine the prevalence and common types of ADFB's presenting to a referral hospital in South Western Uganda, and to review clinical presentation and factors that influence their occurrence among children under 12 years of age. We conducted a case control study comprising 40 cases and 80 unmatched controls. Consecutive and random sampling were used for the cases and controls respectively. A questionnaire was used to collect data. Clinic records were reviewed to calculate prevalence. Prevalence was 6.6 % of all paediatric cases seen in the ENT department that year. The most common symptoms included: history of choking [45 %], sudden cough [72.5 %], stridor [60 %] and failure to swallow [35 %]. The most common location for an airway foreign body was the right main bronchus [40 %] and the upper one third of the oesophagus [32.5 %] for digestive tract foreign bodies. Seeds and coins were most frequently removed. Children from upper level SES had a significantly lower risk of foreign body occurrence [OR = 0.29, p = 0.02] compared to those from a low SES. Also significantly, most cases were referrals from other government health centres [p = <0.01]. The male to female ratio among cases was 2:1. Children of older mothers were less likely to have an ADFB. Prevalence of ADFB's is relatively high. The most common symptoms are a history of choking, cough and failure to swallow. Age under 5 years, male sex, younger maternal age and low socioeconomic status increased odds of ADFBs.