Use of a videofluoroscopic feeding evaluation to guide management of dogs with congenital idiopathic megaoesophagus.

Abstract

BACKGROUND: Evidence-based guidelines for determining dietary management in dogs with megaoesophagus are lacking. OBJECTIVES: This study looked to compare oesophageal clearance times (ECT) of liquid and two food consistencies using a contrast videofluoroscopy feeding evaluation, and to assess if recommendations made based on findings could improve regurgitation and quality of life in dogs with congenital megaoesophagus. METHODS: Twenty-one dogs with congenital megaoesophagus and nine healthy dogs received liquid, slurry, and meatball diets containing barium while in an upright position. Follow-up was performed to determine response to recommendations. RESULTS: Healthy dogs had significantly shorter median ECT for all consistencies (p <&#xa0;0.001). In the megaoesophagus group, ECT varied by consistency and individual. The number of dogs in the megaoesophagus group with complete clearance was four (median ECT 10&#xa0;min) for liquid, five (median ECT 5&#xa0;min) for slurry, and two (median ECT 5 and 30&#xa0;min, respectively) for meatballs. Partial clearance was seen in 11 dogs (median clearance 25%) with liquid, seven with slurry (median clearance 50%), and five with meatballs (median clearance 60%). Recommendations included altering current medications (13/21 dogs), diet consistency (6/21), time upright (12/21), water delivery (21/21), and adding activity (7/21). Regurgitation episodes/week decreased significantly from 5.5 to 2.5 (p <&#xa0;0.001) at follow-up 3-5&#xa0;weeks post-evaluation, with 95% of owners reporting improvement in quality of life. Seventy percent were alive 46-777 days after last recheck. Three dogs died from megaoesophagus associated complications (median survival 461 days after diagnosis). CONCLUSIONS: The findings of this study suggest that a videofluoroscopic feeding evaluation may help guide management of dogs with congenital megaoesophagus.