Hyperglycemia induces abnormalities of gastric myoelectrical activity in patients with type I diabetes mellitus.
OBJECTIVE
Blood glucose concentration has been shown to be an important factor in gastric motility. However, the effect of hyperglycemia on gastric myoelectrical activity has not yet been studied in patients with diabetes.


METHODS
Surface electrogastrography was performed in eight patients with type I diabetes mellitus under normoglycemic and hyperglycemic conditions (glucose clamp technique) and in eight normoglycemic control subjects.


RESULTS
In the early postprandial state, the frequency of the normal pacemaker rhythm tended to be higher during hyperglycemia than during normoglycemia (3.10 +/- 0.27 vs. 2.92 +/- 0.19 cycle/min; P = 0.061). The frequency decrease that occurs immediately after a meal was found less frequently during hyperglycemia (in 25% vs. 75% of the patients; P = 0.046). Higher harmonics of the 3-cycle/min component, indicating an electrogastrographic waveform change, were found less often during hyperglycemia (in 13% vs. 63% of the patients; P = 0.039). Dysrhythmias (in particular, tachygastrias) were more prevalent during hyperglycemia (40.6% vs. 6.5% of the time; P = 0.028). No differences were found between normoglycemic patients and control subjects.


CONCLUSIONS
This study has shown that hyperglycemia is an important factor in the generation of gastric myoelectrical disturbances and tachygastrias in particular.
Jebbink
R J
RJ
Department of Gastroenterology, University Hospital Utrecht, The Netherlands.
Samsom
M
M
Bruijs
P P
PP
Bravenboer
B
B
Akkermans
L M
LM
Vanberge-Henegouwen
G P
GP
Smout
A J
AJ
D000328:Adult; D000368:Aged; D001342:Autonomic Nervous System Diseases / Q000503:physiopathology; D001786:Blood Glucose / Q000378:metabolism; D016009:Chi-Square Distribution; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000503:physiopathology*; D003929:Diabetic Neuropathies / Q000503:physiopathology; D004435:Eating; D004568:Electrodiagnosis; D005215:Fasting; D005260:Female; D015309:Glucose Clamp Technique; D006801:Humans; D006943:Hyperglycemia / Q000097:blood / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D016065:Myoelectric Complex, Migrating; D013270:Stomach / Q000503:physiopathology*
D001786:Blood Glucose