Original ArticleImpact of Retinopathy of Prematurity Screening Examination on Cardiorespiratory Indices: A Comparison of Indirect Ophthalmoscopy and Retcam Imaging
Section snippets
Materials and Methods
This was a prospective nonrandomized study with local ethics committee approval. The study population consisted of all consecutive infants undergoing ROP screening during a 15-month study period at 2 neonatology units. In keeping with United Kingdom screening criteria, the inclusion criteria were all infants born at or before 32 weeks’ gestation, or who weighed ≤1500 g.3 Before inclusion, informed parental consent was obtained. All infants examined at one unit underwent Retcam examination,
Results
During the study period, data were collected for a total of 107 patients. Four were excluded due to missing data. Of the remainder, 67 were in the Retcam group and 36 in the BIO group. The 2 groups were heterogeneous with regard to disease severity, with 2 severe cases of 36 in the BIO group, compared with 15 of 67 in the Retcam group (P = 0.012, Fisher exact test). Hence, severity 1 (more severe) cases were excluded to validate comparative analysis. This left 52 cases in the Retcam group and
Discussion
The results of this study suggest that there is a significant impact on cardiorespiratory indices in preterm infants screened for ROP with both techniques of examination. Screening with the Retcam, however, was associated with a reduced stress response when compared with BIO, even though the length of examination was longer with the Retcam.
Laws et al found a significant rise in HR and systolic and diastolic BP as well as a significant fall in oxygen saturation in a cohort of 56 infants
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Manuscript no. 2005-1112.
No author has a financial interest related to the article.