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  • Title: [Risk factors of retinopathy of prematurity in newborns treated in neonatal intensive care unit of University Children's Hospital Collegium Medicum Jagiellonian University].
    Author: Głowacka E, Kwinta P, Mitkowska Z, Kobylarz J, Kamińska-Mroczkowska H, Mazurek M, Sadowska M, Pietrzyk JJ.
    Journal: Przegl Lek; 2002; 59 Suppl 1():86-90. PubMed ID: 12108084.
    Abstract:
    BACKGROUND: A persistent progress in perinatal care and a large increase in infants' survival rate have been observed recently. As a result, the number of neonates requiring ophthalmologic examinations due to retinopathy of prematurity (ROP) increased as well. METHOD: A retrospective survey including 206 neonates with mean birth weight 1342 g and mean gestational age 30 weeks. MATERIAL: Three groups: 1) without ROP--165 infants (80.1%); 2) with ROP not requiring treatment--13 infants (6.3%); 3) with prethreshold and threshold ROP requiring cryotherapy--28 infants (13.6%) were analysed. RESULTS: Threshold ROP was not observed in infants with gestational age > 32 weeks and/or birth weight > 1500 g. Cryotherapy was applied between the 6th and 18th weeks of life (Mo: 12). The procedure was applied at postmenstrual age between the 34th and 45th weeks of life (Mo: 38). The correlation of ROP with the following factors was observed: length of mechanical ventilation (Me in the studied groups: 6; 22; 33 days respectively; p < 0.01), length of oxygen therapy (Me: 27; 58; 70 days; p < 0.01), number of blood transfusions in first month of life (Me: 2; 4; 4; p < 0.01), minimum pO2 (average: 37.2; 30.2; 29.2 mmHg p < 0.01), pO2 oscillation (measured as SD) (Me: 10.25; 13.2; 15.4 mmHg p < 0.016) and maximal pCO2 (average: 52.5; 56.8; 66.5 p < 0.01) between the 2nd and 4th weeks of life. CONCLUSION: Monitoring of pO2 and pCO2 in infants in the 1st month of life reduce the risk of ROP development. Infants born before the 32nd week of gestational age belong to high risk group and require very systematic ophthalmologic examination. The current prophylactic examination schedule for ROP for more mature infants may be changed.
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