scholarly journals Foetal haemoglobin, blood transfusion, and retinopathy of prematurity in very preterm infants: a pilot prospective cohort study

Eye ◽  
2017 ◽  
Vol 31 (10) ◽  
pp. 1451-1455 ◽  
Author(s):  
C J Stutchfield ◽  
A Jain ◽  
D Odd ◽  
C Williams ◽  
R Markham
2019 ◽  
Vol 39 (6) ◽  
pp. 866-875 ◽  
Author(s):  
Elizabeth Enlow ◽  
Megan M. Gray ◽  
Sara Wallace-Keeshen ◽  
Jo Ann D’Agostino ◽  
Soraya Abbasi ◽  
...  

2021 ◽  
Vol 11 ◽  
Author(s):  
Ranran Shi ◽  
Ming Zhang ◽  
Yao Chen ◽  
Meiying Han ◽  
Ping Xu ◽  
...  

BackgroundAt present, the relationship between thyrotropin (TSH) and free thyroxine (FT4) in relation to postmenstrual age (PMA) in preterm infants is still unclear, and there is no reliable standard thyroid hormone reference ranges, resulting in different diagnostic criteria for congenital hypothyroidism been used by different newborn screening programs and different countries.ObjectivesTo investigate the relationship between TSH/FT4 and PMA in very preterm infants (VPIs) born with gestational age (GA) <32 weeks and to derive thyroid function reference charts based on PMA.MethodsA prospective cohort study was performed on VPIs born with GA<32 weeks and born in or transferred to the 27 neonatal intensive care units from January 1, 2019 to December 31, 2019. Serial TSH and FT4 values were measured at the end of each week during the first month after birth and also at PMA36 weeks, PMA40 weeks and at discharge, respectively. The 2.5th, 5th, 50th, 95th, and 97.5th percentiles of TSH and FT4 of different PMA groups were calculated to draw the percentile charts based on PMA.Results1,093 preterm infants were included in this study. The percentile charts of TSH and FT4 levels based on PMA were drawn respectively, and the result indicated that the percentile charts of TSH values were gradually increased initially and then decreased with increasing PMA. The 97.5th percentile chart reached the peak at PMA30 weeks (17.38μIU/ml), and then decreased gradually, reaching the same level as full-term infants (9.07μIU/ml) at PMA38–40 weeks. The 2.5th percentile chart of FT4 was at its lowest point at PMA26–27 weeks (5.23pmol/L), then increased slowly with PMA and reached the same level as full-term infants at PMA38–40 weeks (10.87pmol/L). At PMA36 weeks, the reference intervals of the 2.5th to 97.5th percentiles of TSH and FT4 were 1.18–12.3μIU/ml and 8.59–25.98pmol/L, respectively.ConclusionThe percentile charts of TSH and FT4 in VPIs showed characteristic change with PMA. The results prompt that age-related cutoffs, instead of a single reference range, might be more useful to explain the thyroid function of VPIs. And repeated screening is necessary for preterm infants.


BMJ ◽  
2017 ◽  
pp. j1039 ◽  
Author(s):  
Colm P Travers ◽  
Reese H Clark ◽  
Alan R Spitzer ◽  
Abhik Das ◽  
Thomas J Garite ◽  
...  

Author(s):  
Mathilde Letouzey ◽  
◽  
Laurence Foix-L’Hélias ◽  
Héloïse Torchin ◽  
Ayoub Mitha ◽  
...  

Neonatology ◽  
2020 ◽  
pp. 1-7
Author(s):  
Pak Cheung Ng ◽  
Kathy Yuen Yee Chan ◽  
Hugh Simon Lam ◽  
Raymond Pui On Wong ◽  
Terence Ping Yuen Ma ◽  
...  

<b><i>Objective:</i></b> The objective of this study is to evaluate the usefulness of fecal microRNA (miR)-223 and miR-451a, as novel noninvasive biomarkers for early diagnosis of necrotizing enterocolitis (NEC) in preterm infants. <b><i>Methods:</i></b> Among the top-listed target miRNAs in our previous differential microarray analysis, miR-223 and miR-451a were quantified in a pilot validation case-controlled study (NEC vs. non-NEC/nonsepsis infants; <i>n</i> = 6 in each group). A definitive prospective cohort study (<i>n</i> = 218) further assessed their clinical usefulness as noninvasive and specific diagnostic biomarkers. Fecal calprotectin was quantified in parallel for comparison. <b><i>Results:</i></b> Of 43 proven NEC cases in the cohort study, 24 (55.8%) had fecal samples recovered within the first 3 days of clinical presentation. Fecal miRNA-223 (10.5 fold), miR-451a (4.5 fold), and calprotectin (2.1 fold) concentrations were significant higher in NEC compared with the non-NEC group (<i>p</i> &#x3c; 0.009). Accepting a minimum sensitivity of 0.75, the positive predictive values (PPVs) ranged between 0.19 and 0.20. Combining fecal biomarkers and CRP (Day 1) could marginally increase the PPVs (0.31–0.34) but adversely lowered the sensitivity (0.54–0.63). <b><i>Conclusions:</i></b> Although fecal miRNA biomarkers and calprotectin concentrations were significantly higher in the NEC group, the considerable overlapping of concentrations between groups and low recovery of stool specimens within 72 h of clinical presentation rendered fecal noninvasive tests of limited clinical value in guiding diagnosis of NEC during the acute phase. A further study is underway to evaluate their roles in surveillance for predicting high-risk premature infants developing NEC.


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