Instituto de Cirugía Ocular, San José, Costa Rica.
Retina. 2011 Apr;31(4):673-8. doi: 10.1097/IAE.0b013e318203c183.
To determine the incidence of endophthalmitis after 20-, 23-, and 25-gauge pars plana vitrectomies (PPVs).
Retrospective comparative case series of consecutive patients who underwent 20-, 23-, or 25-gauge PPV at 11 centers from Latin America between 2005 to 2009. Pars plana vitrectomy cases were identified through a search of the billing records of each institution. Cases of PPV performed in the management of trauma, endophthalmitis, and combined PPV phacoemulsification cases were excluded. Endophthalmitis was diagnosed by clinical criteria regardless of the microbiologic results. The incidence of post-PPV endophthalmitis was compared between 20-, 23-, and 25-gauge PPVs.
A total of 35,427 cases of PPV were identified during the study period (n = 19,865 for 20 gauge, n = 10,845 for 23 gauge, and n = 4,717 for 25 gauge). The 5-year post-PPV endophthalmitis incidence rates were 0.020% (4 of 19,865), 0.028% (3 of 10,845), and 0.021% (1 of 4,717) for 20 gauge, 23 gauge, and 25 gauge, respectively (P = 0.9685).
Small-gauge transconjunctival PPV does not appear to increase the rates of post-PPV endophthalmitis.
确定 20 、 23 和 25 号巩膜扁平部玻璃体切除术（PPV）后眼内炎的发生率。
回顾性比较性病例系列研究，纳入 2005 年至 2009 年拉丁美洲 11 个中心连续接受 20 、 23 或 25 号巩膜扁平部玻璃体切除术的患者。通过对每个机构的计费记录进行搜索来确定 PPV 病例。排除在创伤、眼内炎和联合 PPV 超声乳化治疗中进行的 PPV 病例。眼内炎的诊断依据临床标准，无论微生物学结果如何。比较 20 、 23 和 25 号巩膜扁平部玻璃体切除术后眼内炎的发生率。
在研究期间共确定了 35427 例 PPV（20 号巩膜扁平部玻璃体切除术 19865 例，23 号巩膜扁平部玻璃体切除术 10845 例，25 号巩膜扁平部玻璃体切除术 4717 例）。PPV 后 5 年眼内炎发生率分别为 20 号巩膜扁平部玻璃体切除术 0.020%（4/19865），23 号巩膜扁平部玻璃体切除术 0.028%（3/10845），25 号巩膜扁平部玻璃体切除术 0.021%（1/4717）（P = 0.9685）。
小巩膜扁平部经结膜玻璃体切除术似乎不会增加 PPV 后眼内炎的发生率。
