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Time required for intravitreal injection of ranibizumab biosimilar versus conventional drugs Taichi Yonemitsu 2 , Hiroto Terasaki 1 , Ryoh Funatsu 1 , Naohisa Mihara 1 , Taiji Sakamoto 1 1Department of Ophthalmology, Kagoshima University Graduate School of Medicine and Dental Sciences 2Kagoshima City Hospital pp.1538-1543
Published Date 2024/12/15
DOI https://doi.org/10.11477/mf.1410215423
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Abstract Purpose:This study aimed to compare the time required for the intravitreal injection of conventionally used aflibercept and ranibizumab with that of the new drug, ranibizumab biosimilar(BS), between trainees and specialists, and determine the impact of ophthalmologist experience on procedure time.

Materials and Methods:This single-center retrospective study included patients with exudative age-related macular degeneration or diabetic macular edema who received vitreous injections at Kagoshima University Hospital. The injection time encompassed the time from draping for the injection to drape removal and was compared between trainees and specialists using the Mann-Whitney U test. Serious injection-related complications were investigated using medical record reviews. In addition, the impact of the years of physician experience on injection time was tested using Spearman's rank correlation coefficient.

Results:The procedure times for trainees and specialist physicians were comparable across all drugs. Trainees exhibited significantly longer injection times for ranibizumab BS(p=0.025), ranibizumab(p=0.0013)and aflibercept(p=0.00091). A statistically significant and negative correlation between treatment time and experience was observed(p=0.001, r=−0.56). No serious complications were observed in any patients during the study period.

Conclusion:The procedure time for the intravitreal injection of ranibizumab BS did not differ from those for the conventional drugs. Trainees were able to administer intravitreal injections safely without complications.


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