Intravenous pentoxifylline as adjunct therapy in preterm infants with late-onset sepsis or necrotizing enterocolitis

Preterm infants are highly susceptible to bacterial late-onset sepsis (LOS) and necrotizing enterocolitis (NEC), both are major causes of systemic inflammation and contribute to brain injury and long-term disability in premature infants. Treating LOS and NEC are essential for survival, but suppressing systemic inflammation can also help reduce mortality, hospital stay and disability due to brain injury. The current treatments for NEC and LOS are limited to antibiotics, supportive care and surgery in some NEC cases, all of which do not aid in reducing systemic inflammation, therefore there is a need to reduce systemic inflammation. Pentoxifylline is a safe, low-cost, non-steroidal drug with potent immune-modulating activity with the potential of suppressing systemic inflammation induced by LOS or NEC. A recent Cochrane Review of 6 randomised controlled trials (RCT) suggests that PTX, given with antibiotics in neonatal sepsis, reduces mortality and length of hospital stay. We will enrol and consent 23 preterm infants (<29 weeks gestational age) and intravenously administer Pentoxifylline, adjunct to standard care, for 48hrs within 6 hours of the onset of symptoms suggestive of sepsis or NEC. After 48 hours treatment will cease if diagnosis is refuted or will continue for 4 days if diagnosis is proven. To measure the pharmacokinetic profile of Pentoxifylline a series of four small blood samples will be taken prior to starting treatment and during treatment. The pharmacokinetic profile will allow us to model the optimal infusion frequency and duration, which will be used as a guideline in larger randomised controlled trials that will assess white matter injury and long-term disability.