Deficient sympatho-adrenal activity-a cause of apnoea? Urinary excretion of catecholamines and their metabolites in preterm infants.
Catecholamines (CA) and the CA metabolites 4-hydroxy-3-methoxyphenyl-glycol (HMPG) and 4-hydroxy-3-methoxymandelic acid (VMA) have been determined in 8 preterm infants with recurrent apnoea and in 6 infants with the same birth weight total CA, HMPG or VMA excretion was found during the second, fifth and twelfth day, except for adrenaline, which was higher in the low-apnoeic group during one day.
D000311:Adrenal Glands / Q000503:physiopathology*; D001049:Apnea / Q000209:etiology* / Q000652:urine; D001724:Birth Weight; D002395:Catecholamines / Q000652:urine*; D004837:Epinephrine / Q000652:urine; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000209:etiology* / Q000652:urine; D007234:Infant, Premature; D008734:Methoxyhydroxyphenylglycol / Q000652:urine; D009638:Norepinephrine / Q000652:urine; D014642:Vanilmandelic Acid / Q000652:urine
D002395:Catecholamines; D008734:Methoxyhydroxyphenylglycol; D014642:Vanilmandelic Acid; D009638:Norepinephrine; D004837:Epinephrine