Background: Methylmalonic acidemia (MMA) is a metabolic disease in which proper dietary
treatment may benefit pediatric patients' growth and development. Aim: Effect of Bite-Sized
Teaching Sessions on Mothers' Care of Their Children with Methylmalonic Acidemia. Design: A
quasi experimental design was used. Setting: This study was conducted at the Specialized Genetic
Outpatient Clinic at Children's Hospital affiliated with Ain Shams University Hospitals. Subjects: A
conveinience sample consisting of 50 mothers accompanying their children with Methylmalonic
acidemia. Tools: Tools of data collection included a structured interview questionnaire &Mothers
reported practice checklist related to the care of their children with methylmalonic acidemia. Results:
The results showed highly statistical significant improvement in the studied mothers' knowledge and
reported practice regarding the care of their children with methylmalonic acidemia .Conclusion:
Bite-Sized Teaching Sessions implementation had statistical significant positive effect on improving
mothers' knowledge & reported practice regarding caring of children with methylmalonic acidemia.
Recommendation: Continuous Bite-Sized Teaching Sessions should be provided for all mothers
caring of children with methylmalonic acidemia