Background: A new ultrasonographic method was applied in children with recu
rrent abdominal pain, to study accommodation of the proximal stomach to a m
eal.
Methods: After an overnight fast, 20 patients with recurrent abdominal pain
(age, 7-14 years) and 23 healthy control subjects (age, 7-13 years), were
scanned by a 5-MHz transducer positioned in the epigastrium, to monitor the
size of the proximal stomach before and after a test meal of meat soup.
Results: Children with recurrent abdominal pain had a significantly smaller
sagittal area of the proximal stomach at 10 and 20 minutes after the meal
than in healthy control subjects (P = 0.01 for both) and significantly high
er emptying fraction of the proximal stomach at 10 minutes after the meal t
han in healthy control subjects (P = 0.02). There was no significant differ
ence in emptying of the distal stomach between the patients and healthy con
trol subjects. Children with recurrent abdominal pain experienced more symp
toms (pain, bloating) in response to the test meal than did healthy control
subjects.
Conclusion: The results support the view that recurrent abdominal pain in c
hildren may be a motility disorder that can be detected in the proximal sto
mach as an impairment of adaptive relaxation in response to a meal. This ne
w ultrasonographic method may become a valuable diagnostic tool in patients
with recurrent abdominal pain.