Safety of the One Step Percutaneous Endoscopic Gastrostomy (Push-PEG) Button in Pediatric Patients.

OBJECTIVES: Percutaneous endoscopic gastrostomy (PEG)-systems are essential tools for enteral feeding in a broad variety of pediatric patients. The One Step ("Push-PEG") technique allows the direct introduction of a PEG-Button. The aim of the study was to investigate the safety and parental view of the Push-PEG technique. METHODS: We conducted a single-center retrospective data and questionnaire (SDC, http://links.lww.com/MPG/D296 ) based study including all pediatric patients receiving a PEG via push or pull technique between 2015 until end of 2020 and compared these 2 groups. The primary outcome was the detection of minor and major complications. Secondary outcomes were growth, thriving, and parental contentment using a Likert-scaled questionnaire. RESULTS: Eighty-three patients were included in the analysis. There were no significant differences in the basic data regarding age, weight, or diagnosis category. Overall complication rate was 34.9%. The Push-PEG group showed a lower rate of complications (32.7% vs 38.7%) and a lower rate of major complications (4.1% vs 8.8%), although the difference is not significant. Thirty-four families completed the questionnaire (SDC, http://links.lww.com/MPG/D296 ) (response rate 40%). There were no significant differences between the 2 groups regarding answers of the Likert-scaled questions. CONCLUSION: Push-PEG placement seems to be as safe as placement via traditional pull technique, even in small infants more than 2.8 months and 4 kg. As Push-PEG placement requires less follow-up interventions it may show significant advantages and could be the method of first choice in many cases.

Mendelian randomization and experimental IUGR reveal the adverse effect of low birth weight on lung structure and function.

Intrauterine growth restriction (IUGR) and low birth weigth (LBW) are risk factors for neonatal chronic lung disease. However, maternal and fetal genetic factors and the molecular mechanisms remain unclear. We investigated the relationship between LBW and lung function with Mendelian randomisation analyses and studied angiogenesis in a low protein diet rat model of IUGR. Our data indicate a possible association between LBW and reduced FEV1 (p = 5.69E-18, MR-PRESSO) and FVC (6.02E-22, MR-PRESSO). Complimentary, we demonstrated two-phased perinatal programming after IUGR. The intrauterine phase (embryonic day 21) is earmarked by a reduction of endothelial cell markers (e.g. CD31) as well as mRNA expression of angiogenic factors (e.g., Vegfa, Flt1, Klf4). Protein analysis identified an activation of anti-angiogenic mTOR effectors. In the postnatal phase, lung capillaries (< 20 µm) were significantly reduced, expression of CD31 and VE-Cadherin were unaffected, whereas SMAD1/5/8 signaling and Klf4 protein were increased (p < 0.01). Moreover, elevated proteolytic activity of MMP2 and MMP9 was linked to a 50% reduction of lung elastic fibres. In conclusion, we show a possible link of LBW in humans and reduced lung function in adulthood. Experimental IUGR identifies an intrauterine phase with inhibition of angiogenic signaling, and a postnatal phase with proteolytic activity and reduced elastic fibres.