[Significance of lactose breath test in the newborn].
Lactose breath test have been performed in healthy newborns, in whom breath hydrogen excretion was preliminarily demonstrated by lactulose breath test. 27.5% of newborns showed positive lactose breath test, with no differences related to sex and gestational age, while a higher percentage of positive test has been found in < 2500 g and formula-fed neonates compared, respectively, to > or = 2500 g and breast-fed ones. In healthy newborns, without any clinical signs of lactose intolerance, it is possible to demonstrate hydrogen in expired air; this is not equivalent of lactose malabsorption, but, instead, depends on the phenomenon of colonic fermentation that allows energy and nutrient absorption.
Laforgia
N
N
Dipartimento di Biomedicina dell'Età Evolutiva, Università degli Studi, Bari.
Benedetti
G
G
Altavilla
T
T
Baldassarre
M E
ME
Grassi
A
A
Bonsante
F
F
Mautone
A
A
D001944:Breath Tests; D003937:Diagnosis, Differential; D005260:Female; D005865:Gestational Age; D006801:Humans; D006859:Hydrogen / Q000378:metabolism; D007231:Infant, Newborn; D007785:Lactose / Q000378:metabolism; D007787:Lactose Intolerance / Q000175:diagnosis*; D008297:Male
D006859:Hydrogen; D007785:Lactose
Significato del breath test al lattosio in età neonatale.