당뇨황반부종에서 베바시주맙 단독요법군과 베바시주맙-후테논낭하 트리암시놀론 병합요법군 간의 치료효과 비교
Intravitreal Bevacizumab versus Intravitreal Bevacizumab Combined with Posterior Subtenon Triamcinolone Acetonide for Diabetic Macular Edema
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목적: 당뇨황반부종에서 유리체강내 베바시주맙 주입술 단독요법과 유리체강내 베바시주맙 주입술 및 후테논낭하 트리암시놀론 주입술 병합요법의 임상결과를 비교하였다. 대상과 방법: 당뇨황반부종이 있는 증식성당뇨망막병증 66안을 대상으로 단독요법군 35안, 병합요법군 31안으로 나누어, 주사 시행 전 및 시술 후 1, 2, 3개월의 시력, 중심황반두께, 전체황반부피, 경성삼출물 정도, 안압의 변화를 비교, 분석하였다. 결과: 두 군 모두에서 치료 후 1개월에만 유의한 시력호전을 보였다. 중심황반두께와 전체황반부피도 치료 후 1개월째 의미있는 감소를 보였으나 2개월째부터 다시 악화되었다. 치료 전후로 두 군 간에 시력, 중심황반두께, 전체황반부피의 의미있는 차이를 보이지 않았다. 경성삼출물 정도는 병합요법군에서 치료 3개월째 의미있는 감소(치료 전 2,899 ± 2,314 pixels vs. 3개월째 2,536 ± 1,981 pixels, p=0.041)를 보인데 비해, 단독요법군에서는 치료 3개월까지 차이를 보이지 않았다. 안압은 두 군 간 치료 전후로 차이를 보이지 않았다. 관찰 기간 중 안압상승이나 안내염 등의 합병증은 관찰되지 않았다. 결론: 유리체강내 베바시주맙 및 후테논낭하 트리암시놀론 주입술의 병합요법은 유리체강내 베바시주맙 주입술 단독요법과 비교하여 시력, 중심황반두께, 전체황반부피에서 부가적인 효과를 보이지 않았으나 3개월째 경성삼출물 정도를 줄이는 데 효과적이었다.
Abstract
Purpose: To investigate the outcome of intravitreal bevacizumab (IVB) combined with posterior subtenon triamcinolone acetonide injections compared to IVB injection alone in patients with diabetic macular edema (DME). Methods: IVB injection (IVB group) and combination therapy injection (combination group) were administered to 35 eyes and 31 eyes, respectively, diagnosed with proliferative diabetic retinopathy combined with DME. Changes in best corrected visual acuity (BCVA), central macular thickness (CMT), total macular volume (TMV), amount of hard exudates and intraocular pressure (IOP) were compared retrospectively between groups prior to injection and 1, 2 and 3 months after injection. Results: BCVA changes in both groups were only statistically significant at 4 weeks after injection. Reduction of CMT and TMV was maintained for 1 month after treatment in all groups, but CMT and TMV deteriorated 2 months after treatment. No significant differences in BCVA, CMT or TMV were detected between the IVB and combination groups. The amount of hard exudates were only significantly decreased at month 3 in the combination group whereas the amount of hard exudates was not significantly different at 3 months in the IVB group (at baseline 2,899 ± 2,314 pixels vs. at 3 months 2,536 ± 1,981 pixels, p-value = 0.041). IOP showed no significant difference between the groups. Elevated IOP or endophthalmitis were not observed. Conclusions: In terms of BCVA improvement, subtenon triamcinolone provided no additional benefit on CMT and TMV reduction. However, combination therapy was effective in reducing the amount of hard exudates at 3 months.
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