Comparative Efficacy of Interventions for Analgesia During Heel Prick in Newborn Infants - A Systematic Review and Network Meta-Analysis

Abstract

Context: Heel prick is one among the common painful procedures in neonates. We performed a systematic review and network meta-analysis (NMA) to compare the efficacy of different interventions for analgesia during heel prick in neonates.

Evidence acquisition: Medline, Cochrane, Embase and CINAHL databases were searched from inception until February 2023. Randomized and quasi-randomized trials that evaluated different pharmacological and non-pharmacological interventions for analgesia during heel prick for neonates were included. Data from the included trials were extracted in duplicate. A NMA with a frequentist random-effects model was used for data synthesis. Certainty of evidence (CoE) was assessed using GRADE. We adhered to the PRISMA-NMA guidelines.

Results: One-hundred-and-three trials comparing 51 different analgesic measures were included. Among the 38 interventions, for pain "during" heel prick, non-nutritive suckling (NNS) plus sucrose [SMD -3.15 (-2.62, -3.69)], followed by breastfeeding, glucose, expressed breast milk (EBM), sucrose, NNS and touch massage, had a high certainty of evidence (CoE) to reduce pain scores when compared to no intervention. Among the 23 interventions for pain at 30 seconds after heel-prick, moderate CoE was noted for facilitated tucking plus NNS plus music, glucose, NNS plus sucrose, sucrose plus swaddling, mother holding, EBM, sucrose and NNS.

Conclusions: Oral sucrose 2 minutes before combined with NNS during the procedure, was the best intervention for reducing pain during heel prick. It also effectively reduced pain scores 30 seconds and 1 minute after the procedure. Other interventions with moderate to high CoE for a significant reduction in pain during and at 30 seconds after heel prick are oral sucrose, oral glucose, EBM and NNS. All these are low-cost and feasible interventions for most of the settings.