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- W4377565416 abstract "Background/Objectives Progression of retinopathy of prematurity (ROP) is associated with increased retinal blood flow velocities. We investigated changes of central retinal arterial and venous blood flow after intravitreal administration of bevacizumab. Subjects/Methods Prospective observational study using serial ultrasound Doppler imaging in preterm infants with bevacizumab-treated ROP. Eyes were examined 1 [0–2] days before injection (median [interquartile range]), and at three time points after injection (1 [1–2] days, 6 [3–8] days, and 17 [9–28] days). Preterm infants with ROP stage 2 displaying spontaneous regression served as controls. Results In 21 eyes of 12 infants with bevacizumab-treated ROP, peak arterial systolic velocity declined from 13.6 [11.0-16.3] cm/s prior to intravitreal bevacizumab to 11.2 [9.4–13.9] cm/s, 10.6 [9.2–13.3] cm/s and 9.3 [8.2–11.0] cm/s at discharge ( p = .002). There was also a decline of the arterial velocity time integral (from 3.1 [2.3–3.9] cm to 2.9 [2.4–3.5], 2.7 [2.3–3.2] cm and 2.2 [2.0–2.7], p = .021) and mean velocity in the central retinal vein (from 4.5 [3.6–5.8] cm/s to 3.7 [2.6–4.1] cm/s, 3.5 [3.0–4.3] cm/s, and 3.2 [2.8–4.6] cm/s, p = .012). Arterial end-diastolic velocity and resistance index remained unchanged. Blood flow velocities in bevacizumab-treated eyes examined before injection were significantly higher than those measured in untreated eyes that ultimately showed spontaneous regression of ROP. Sequential examinations in these controls did not reveal any declines of retinal blood flow velocities. Conclusion Increased retinal arterial and venous blood flow velocities in infants with threshold ROP decline following intravitreal bevacizumab injection." @default.
- W4377565416 created "2023-05-24" @default.
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- W4377565416 date "2023-05-22" @default.
- W4377565416 modified "2023-09-30" @default.
- W4377565416 title "Retinal blood flow velocities in infants with retinopathy of prematurity after intravitreal administration of bevacizumab" @default.
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- W4377565416 doi "https://doi.org/10.1177/11206721231178062" @default.
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