Sara Cornacchione

May oxidative stress biomarkers in cord blood predict the occurrence of necrotizing enterocolitis in preterm infants

Introduction: Oxidative stress (OS) is strongly involved in the pathogenesis of many preterm newborn diseases; this is due to the low efficiency of neonatal antioxidant systems unable to counteract the harmful effects of free radicals (FRs). Hypoxic-ischemic events and inflammation, involved in necrotizing enterocolitis (NEC) pathogenesis, are responsible of the overproduction of FRs, generating OS. Aim: To test the hypotesis that OS markers levels in cord blood may early identify the newborns at high risk to develop NEC. Materials and methods: 332 preterm newborns of gestational age (GA) between 24 and 33 week and birth weight (BW) between 460 and 2540 g were consecutively recruited in three european neonatal intensive care units. Markers of potential OS risk: non-protein bound iron (NPBI), and markers of FRs damage: advanced oxidation protein products (AOPP) and total hydroperoxides (TH), were measured in the cord blood. Associations between NEC and OS markers were checked through inferential analysis. Results: Out of 332 preterm babies, 29 developed NEC. Babies with NEC had a BW and a GA significantly lower than healthy babies. AOPP, TH and NPBI cord blood levels were significantly higher in babies with NEC than in babies without (respectively mean AOPP = 28.05 ± 21 vs 15.80 ± 7.14; p < 0.05; TH = 154.48 ± 84.67 vs 107.40 ± 61.01; p < 0.05; NPBI = 2.21 ± 3.98 vs 0.95 ± 1.59; p < 0.05). Conclusions: The determination of OS biomarkers in cord blood can be useful in identifying babies at high risk for NEC and in devising new strategies to ameliorate perinatal outcome.

How painful is a heelprick or a venipuncture in a newborn

Abstract Objective: Neonates undergo many painful procedures daily, in particular venipunctures and heelpricks. Our aim was to assess how painful these procedures actually are, and how effective are the common analgesic strategies to blunt this pain. Methods: We performed a MEDLINE/PubMed research from 1999 to 2013. We retrieved all papers in English language that evaluated pain during neonatal heelprick or venipuncture and that used as score the Premature Infant Pain Profile (PIPP), a widely used scale for evaluate acute pain in term and preterm babies. Results: Fifteen papers met the inclusion criteria, using different analgesic methods. Just in one case two studies used the same analgesic method. Most analgesic procedures show a relevant level of pain. We didn’t find univocal difference between heelprick and venipuncture. Topic creams, systemic analgesics, posture and oral glucose 10% have scarce analgesic effectiveness. The most effective procedures are the use of oral sweet solutions (sucrose or glucose) at concentrations greater than 20%, multisensory stimulations and non-nutritive sucking used along with 10% glucose. Conclusions: A large amount of analgesic methods was used, making comparisons difficult. Nevertheless, in the absence of analgesic treatment, heelpricks and venipunctures are moderately-severely painful, and among the proposed analgesic procedures, few seem to be effective.

Optic perineuritis: a further cause of visual loss and disc edema in children.

BACKGROUND Optic perineuritis is a rare form of orbital inflammatory pseudotumor in which the specific target tissue is the optic nerve sheath. Patients are mainly represented by adult women. Differential diagnosis with demyelinating optic neuritis is essential in terms of prognosis and treatment. CASE PRESENTATION An 8-year-old Caucasian girl presented with bilateral loss of vision, disc edema, eye movement impairment, and diplopia. Brain MRI findings were suggestive of optic perineuritis. The patient received steroid pulse therapy followed by prolonged course of oral steroid therapy. The visual acuity recovered dramatically within 2 days. Two months later, a new MRI investigation was normal. No clinical relapse was observed at the follow-up. DISCUSSION We first report on a child affected by optic perineuritis. Our observation suggests that optic perineurits should be considered in the differential diagnosis of children presenting with visual loss and disc edema. An early and correct diagnosis may lead to an appropriate therapeutic approach with very good outcome.

Use of fetal analgesia during prenatal surgery

Objective: Recent progresses in fetal surgery have raised concern on fetal pain, its long-term consequences and the risks of sudden fetal movements induced by pain. In several studies, surgeons have directly administered opioids to the fetus, while others have considered sufficient the maternally administered analgesics. We performed a review of the literature to assess the state of the art. Methods: We performed a PubMed search to retrieve the papers that in the last 10 years reported studies of human fetal surgery and that described whether any fetal analgesia was administered. Results: We retrieved 34 papers. In three papers, the procedure did not hurt the fetus, being performed on fetal annexes, in two papers, it was performed in the first half of pregnancy, when pain perception is unlikely. In 10 of the 29 remaining papers, fetal surgery was performed using direct fetal analgesia, while in 19, analgesia was administered only to the mother. In most cases, fetal direct analgesia was obtained using i.m. opioids, and muscle relaxant. Rare drawbacks on either fetuses or mothers due to fetal analgesia were reported. Conclusion: Fetal direct analgesia is performed only in a minority of cases and no study gives details about fetal reactions to pain. More research is needed to assess or exclude its possible long-term drawbacks, as well as the actual consequences of pain during surgery.

C-reactive protein: a marker of neonatal stress?

Abstract Aim: To assess whether blood values of C-reactive protein (CRP) in healthy term newborns, are influenced by stress. Material and methods: Since different types of delivery (vaginal delivery [VD], emergency C-section [EMCS] and elective C-section [ELCS]) are notoriously characterized by different levels of stress for the baby, these three groups were used as models of different levels of stress. The mean CRP values of the three groups obtained in the first hours of life were compared. Results: We retrieved 1012 babies. Median values (3rd–97th ct) were: 0.05 (0.01–0.46), 0.17 (0.02–1.54), 0.30 (0.04–1.77), 0.43 (0.05–1.31), 0.40 (0.04–1.13) at 12, 24, 48, 72 and 96 h, respectively. Mean values in babies born after VD were statistically higher than those born after C-section, and higher CRP values were present in EMCS with respect to ELCS. Conclusion: This study described normal blood CRP values in a wide population of term babies. An influence of the type of delivery on blood CRP is evident, and this may be explained by the different amount of perinatal stress induced by anyone of the three types of delivery we considered.

Pain perception in NICU: a pilot questionnaire

Abstract Purpose: Neonatal pain management has made a great step forward over the last several years. Despite the drafting of International guidelines, an under-treatment of neonatal pain is still reported. Materials and methods: Medical and paramedical personnel working in five Italian NICUs were asked to complete a questionnaire about pain management. The questionnaire was comprised of three sections: (i) brief explanation of the purpose; (ii) demographic information, including age, profession, religious beliefs, and hospital level; (iii) questionnaire about pain management and prevention. Results: One-hundred and forty caregivers participated in this study. Non-pharmacological analgesia during heel prick or venipuncture was used by 64% and 60% of them, respectively; topical analgesia was performed in 13% of venipunctures; no analgesia was used in 30% of cases for both heel prick and venipuncture. In the case of lumbar puncture, 35% of participants used topical analgesia, 15% non-pharmacological approach, 10% opioids, and 6% intravenous paracetamol. While 65% of participants gave a score of 4 out of 5 about the importance of pain treatment, 39% of them reported that in their department no pain scales were used. Conclusions: Pain treatment in these NICUs is still far to be optimal. This nonetheless reflects a worldwide trend, which requires more attention on pain prevention, assessment, and treatment.

Identification of a panel of cytokines in neonates with hypoxic ischemic encephalopathy treated with hypothermia

Purpose Inflammation is a crucial but understudied mechanism of neuronal injury after hypoxia‐ischemia. The aim was to identify a panel of cytokines involved in brain injury in neonates with hypoxic ischemic encephalopathy (HIE). Methods Ten newborns with HIE undergoing to therapeutic hypothermia (TH, HIE Group) and 8 healthy newborns (CTRL Group) were enrolled. For the HIE group, 5 samples were collected: between 0 and 6 h of life (time 1), 12 h (time 2), 24 h (time 3), 48 h (time 4) and 96 h of life (time 5). For the CTRL group, one sample was collected. A panel of 48 inflammatory cytokines was determined in all samples. Data were analyzed using multivariate statistical analysis (Principal component analysis, PCA) Results 17 cytokines, among 48 analyzed, were found to be significantly different, initially, between the CTRL and HIE groups: 12 with reported pro‐inflammatory effects and 5 with reported anti‐inflammatory effects. In the HIE group cytokines showed a decreasing trend during the TH and at the end of treatment comparable to the CTRL group. IL‐18 did demonstrate a slight increase at time 3 during HT but decreased steadily at sampling times, 4 and 5. Conclusions Our data demonstrates that many pathways of the inflammatory cascade are activated following hypoxic‐ischemic injury. This information will increase our understanding of changes in cytokines over time in neonates with HIE undergoing TH.