History and radiographic findings as predictors for esophageal coins versus button batteries

To determine if clinical history and radiographic findings are reliable predictors for coin versus button battery in children presenting with esophageal foreign bodies to accurately guide decision making regarding the urgency of removal.

A retrospective chart review was conducted in a single pediatric tertiary care center of all children who presented with suspected coin or button battery esophageal foreign body ingestion from 2017 to 2019. Patients with documented surgical removal, completed consultation notes, and available radiographic studies were included. Descriptive statistical analysis was performed and predictive characteristics of the diagnostic tests were calculated.

139 patients met inclusion criteria for the study. Of 5 patients who had esophageal button batteries removed, clinical history was concerning for button battery in 2; accuracy of 12.35%. However, radiology reports suggested a battery in all 5. The negative predictive value for radiology alone for diagnosis of button battery was 97% with 81% accuracy. The clinical history for coin foreign body was accurate in 85.28% while radiography was 87% accurate. Wait time on average for all coin foreign body cases was 6.3 h. Day cases waited on average 5.5 h while after-hours cases waited a statistically significantly longer 7.5 h (p = 0.006).

Button batteries, while clinically important emergencies, are rare esophageal ingestions. Radiography has a strong negative predictive value for button battery. Children whose radiographic studies do not demonstrate concern for button battery could be considered for delayed elective removal. This could allow children to complete a period of observation at home, thereby reducing prolonged in-house wait times prior to operative removal.