Caffeine May Prevent Acute Kidney Injury in Preterm Neonates

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In a large study, caffeine administration to neonates born before 33 weeks’ gestation reduced their odds of experiencing AKI by a significant 80%.
In a large study, caffeine administration to neonates born before 33 weeks’ gestation reduced their odds of experiencing AKI by a significant 80%.

Caffeine may offer a way to reduce the risk and severity of acute kidney injury (AKI) in preterm neonates, new research findings suggest.

In a multicenter study of 675 preterm neonates (gestation less than 33 weeks), a team led by Jennifer R. Charlton, MD, MSc, of the University of Virginia in Charlottesville, found a significant 80% reduction in the odds of developing AKI among neonates administered caffeine compared with those who were not in adjusted analyses. The investigators calculated that 1 case of AKI was prevented for every 4.3 neonates exposed to caffeine. In addition, among neonates with early AKI, those who received caffeine had a significant 80% decreased odds of progressing to stage 2 or 3 AKI.

“Because of the benefits and favorable adverse effect profile of caffeine, it may be reasonable to consider routine use of prophylactic caffeine in neonates of 28 and 32 weeks' gestational age to prevent or reduce AKI, even when apnea of prematurity or the need for positive pressure respiratory support is absent,” Dr Charlton's team concluded in a paper published online ahead of print in JAMA Pediatrics.

The investigators noted that AKI is a common occurrence in preterm neonates and it is associated with increased morbidity and mortality. For the study, the investigators defined AKI based on the modified neonatal Kidney Disease: Improving Global Outcomes definition in the first 7 days after birth.

The study was a secondary analysis of the AWAKEN (Assessment of Worldwide Acute Kidney Injury Epidemiology in Neonates) study. Of the 675 neonates in the analysis, 374 were male (55.4%). The cohort had a mean gestational age of 28.9 weeks and mean birth weight of 1285 grams. AKI developed in 122 patients (18.1%) in the first 7 days after birth. It developed in 50 (11.2%) of 447 neonates who received caffeine compared with 72 (31.6%) of 228 who did not.

Reference

Harer MW, Askenzai DJ, Boohaker LJ, et al. Association between early caffeine citrate administration and risk of acute kidney injury in preterm neonates. Results from the AWAKEN study. JAMA Pediatr. 2018 (published online ahead of print).

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