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Published on: October 11, 2011
Theophylline and gastric emptying in very low birthweight neonates: a randomised controlled trial
A Gounaris1, P Kokori, L Varchalama
1Regional General Hospital, Nikea, Athens 116 34, Greece. gounaran@ath.forthnet.gr
Insights
Theophylline treatment significantly delays gastric emptying in preterm infants, with a longer half-time for antral cross-sectional area changes. This finding is crucial for managing apnoea of prematurity.
Area of Science:
- Neonatal Physiology
- Pharmacology
- Gastroenterology
Background:
- Theophylline is used for apnoea of prematurity but causes side effects.
- Vomiting and abdominal distension may stem from delayed gastric emptying.
Purpose of the Study:
- To investigate the impact of theophylline on gastric emptying time in preterm infants.
Main Methods:
- 18 preterm neonates (mean birth weight 1302g, gestational age 28.7 weeks) were studied.
- Gastric emptying was assessed via ultrasound (antral cross-sectional area) over 120 minutes.
- Measurements were taken with and without theophylline treatment, with randomized administration timing.
Main Results:
- Theophylline significantly increased gastric emptying half-time (52 min vs 37 min, p < 0.05).
- Mean antral cross-sectional area (ACSA) half-time was prolonged in neonates receiving theophylline.
Conclusions:
- Theophylline administration appears to delay gastric emptying in very low birthweight neonates.
- Clinicians should consider this effect when prescribing theophylline for apnoea of prematurity.
Background:
Theophylline treatment causes side effects such as tachycardia, hyperglycaemia, abdominal distension, and vomiting. The latter two are probably the result of delayed gastric evacuation.
Objective:
To study the effect of theophylline on gastric emptying time in preterm infants.
Patients:
The subjects were 18 premature neonates with a mean (SD) birth weight of 1302 (240) g and a mean (SD) gestational age of 28.7 (1.9) weeks.
Main Outcome Measures:
In each case, gastric emptying was measured on two occasions: once when the newborns were being treated with theophylline and once when they were not. Half of the cases were randomised to receive theophylline before the initial measurement. The opposite was applied for the rest. Gastric emptying was assessed ultrasonically by measuring the change in antral cross sectional area (ACSA) at regular intervals over 120 minutes.
Results:
The mean (SD) ACSA half time in the newborns receiving theophylline was 52 (19) minutes compared with 37 (16) minutes in those not receiving theophylline. This difference is significant (p < 0.05).
Conclusions:
Treatment with theophylline seems to delay gastric emptying in very low birthweight neonates, and this must be taken into consideration when this drug is used to treat apnoea of prematurity.
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