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Erschienen in:

18.05.2023 | Medical Ophthalmology

Topical antibiotic prophylaxis before intravitreal injections: a pilot study

verfasst von: Edoardo Trovato Battagliola, Rodolfo Javier Riveros Cabral, Gregorio Manco, Gianluca Puggioni, Claudio Brancato, Pietro Mangiantini, Floriana Testa, Mariaelena Malvasi, Giammarco Raponi, Paolo Turchetti, Fernanda Pacella, Elena Pacella

Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology | Ausgabe 10/2023

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Abstract

Purpose

To explore whether topical antibiotic prophylaxis in patients scheduled for intravitreal injections achieves surface sterility in a greater proportion of subjects as compared to povidone-iodine alone.

Material and methods

A randomized, triple-blind clinical trial. Population: patients scheduled for intravitreal injections for maculopathy. Inclusion criteria: any sex and race, age 18 years and above. Subjects were randomized into 4 groups: the first group applied chloramphenicol (CHLORAM), the second netilmicin (NETILM), the third a commercial ozonized antiseptic solution (OZONE), and the fourth applied no drops (CONTROL). Outcome variable: percentage of non-sterile conjunctival swabs. Specimens were collected before and after the application of 5% povidone-iodine moments before the injection.

Results

Ninety-eight subjects (33.7% females, 64.3% males), mean age: 70.2 ± 9.3 years (54–91). Before povidone-iodine, both the CHLORAM and NETILM group showed a lower percentage of non-sterile swabs (61.1% and 31.3% respectively), as compared to the OZONE (83.3%) and CONTROL (86.5%) groups (p < .04). However, this statistical difference was lost after the application of povidone-iodine for 3 min. Percentage of non-sterile swabs in each group after applying 5% povidone-iodine: CHLORAM 11.1%, NETILM 12.5%, CONTROL 15.4%, OZONE 25.0%. This was not statistically significant (p > .05).

Conclusions

Topical antibiotic prophylaxis with chloramphenicol or netilmicin drops decreases the bacterial load on the conjunctiva. However, after the application of povidone-iodine, all groups showed a significant reduction in the percentage of non-sterile swabs, and this value was comparable among all groups. For this reason, authors conclude that povidone-iodine alone is sufficient and prior topical antibiotic prophylaxis is not indicated.
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Metadaten
Titel
Topical antibiotic prophylaxis before intravitreal injections: a pilot study
verfasst von
Edoardo Trovato Battagliola
Rodolfo Javier Riveros Cabral
Gregorio Manco
Gianluca Puggioni
Claudio Brancato
Pietro Mangiantini
Floriana Testa
Mariaelena Malvasi
Giammarco Raponi
Paolo Turchetti
Fernanda Pacella
Elena Pacella
Publikationsdatum
18.05.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
Graefe's Archive for Clinical and Experimental Ophthalmology / Ausgabe 10/2023
Print ISSN: 0721-832X
Elektronische ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-023-06113-1

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