Necrotizing enterocolitis as a prognostic factor for the neurodevelopmental outcome of preterm infants - match control study after 2years

PURPOSE

Necrotizing enterocolitis (NEC) in very low birth weight infants is a risk factor for developmental delay. To our knowledge, there are no studies published investigating the neurodevelopmental outcome of patients with NEC comparing surgically treated and conservatively treated patients versus match paired controls. The aim of this retrospective case control study was to measure the neurodevelopmental outcome of patients with NEC who were treated surgically or conservatively METHODS: All patients were identified, who have been diagnosed with NEC (ICD-10 code, P77) born between 2006 and 2013. Patients with NEC received antibiotic therapy, nasogastric decompression and fasting. Surgical treatment was indicated for patients with Bell stages IIIb. We excluded patients suffering from other relevant diseases with a possible impact on their neurodevelopmental outcome (e.g., intraventricular hemorrhage, associated malformations, asphyxia, focal intestinal perforation, short bowel syndrome). Patients were tested at the corrected gestational age of 24months according to the Bayley Scales of Infant Development II. Each participant was compared to a child of the same sex, gestational age at birth (+/-two days), birth weight (+/-10%), and age at neurodevelopmental testing (IRB approval, No. 14/2014). The outcome measures were the psychomotor index (PDI) and the mental developmental index (MDI).

RESULTS

We included 13 conservatively and 24 surgically treated patients. The patients in group A (without surgery) achieved a mean PDI of 106, and those in group B (with surgery) a mean PDI of 90. These values were significantly higher in the conservative group A. The mean MDIs were 99 in the patient group A and 85 in patient group B. This difference was also significant.

CONCLUSION

We found significantly lower MDIs and PDIs in children with surgical treatment of NEC. Further systematic prospective research on the prevention of NEC and systematic follow-ups at later stages in the patients' development are necessary in order to implement early intervention.

TYPE OF STUDY

case control study.

LEVEL OF EVIDENCE

III.

Follow-Up of Children with Gastrointestinal Malformations and Postnatal Surgery and Anesthesia: Evaluation at Two Years of Age

BACKGROUND

The impact of general anesthesia is considered a risk factor for developmental delay. Very few studies have been performed to measure the neurodevelopmental outcome of patients with selected malformations.

OBJECTIVES

The purpose of this ambidirectional cohort study was to measure the neurodevelopmental outcome of patients with congenital gastrointestinal-tract malformations (GIM).

METHODS

Forty patients with relevant congenital GIM born in the period from June 2008 to April 2011 were identified. The inclusion criteria were a gestational age >32 completed weeks and surgery that required a general anesthetic within the first 28 days of life. The neonatal characteristics and anesthesia data were retrospectively collected. Based on information about the neonatal characteristics and socioeconomic background, a matched pair was found. All participants were tested at the corrected age of 24 months with the Bayley Scales of Infant Development II assessment.

RESULTS

The outcome was split into the psychomotor index (PDI) and mental developmental index (MDI). The patient group achieved a mean PDI of 103 and the control group achieved 106, i.e. these values were not significantly different. The mean MDI was 102 in the patient group and 110 in the control group. This difference was significant (p = 0.022). Detailed analysis of the items showed no significance for nonverbal items but a significant difference for verbal items (p = 0.029). Further analysis showed no correlation between relevant anesthesia data and the neurodevelopmental outcome.

CONCLUSIONS

We found lower MDI scores due to worse verbal abilities in the patient group. Children born with GIM should be considered a risk group with respect to language development.

Voxel-based morphometry and diffusion-tensor MR imaging of the brain in long-term survivors of childhood leukemia

The aims of this study were to detect morphological changes in neuroanatomical components in adult survivors of acute lymphoblastic leukemia (ALL). Voxel-based morphometry (VBM) can be used to detect subtle structural changes in brain morphology and via analysis of fractional anisotropy (FA), diffusion-tensor imaging (DTI) can non-invasively probe white matter (WM) integrity. We used VBM and DTI to examine 20 long-term survivors of ALL and 21 healthy matched controls. Ten ALL survivors received chemotherapy and irradiation; ten survivors received chemotherapy alone during childhood. Imaging was performed on a 3.0-T MRI. For VBM, group comparisons of segmented T1-weighted grey matter (GM) and WM images from controls and ALL survivors were performed separately for patients who received chemotherapy alone and who received chemotherapy and irradiation. For DTI, FA in WM was compared for the same groups. Survivors of childhood ALL who underwent cranial irradiation during childhood had smaller WM volumes and reduced GM concentration within the caudate nucleus and thalamus. The FA in WM was reduced in adult survivors of ALL but the effect was more severe after combined treatment with irradiation and chemotherapy. Our results indicate that DTI and VBM can reveal persistent long-term WM and caudate changes in children after ALL treatment, even without T2 changes in conventional imaging.