Ritter M A, Stringer E A
Clin Orthop Relat Res. 1980 Jul-Aug(150):177-80.
A 7-year follow-up was conducted on 183 total hip replacements and evaluated for infection. Eighty-seven operations were done in a horizontal laminar air-flow operating room and 89 were done in a conventional operating room without laminar air-flow. In the laminar air-flow group, there were 2 infections (2.2%) and 6 (6.7%) in the conventional operating room. Excluding those patients who had undergone previous operations, there were 3 infections out of 76 (4%) in the conventional operating room group. One infection out of 68 (1%) occurred in the laminar air-flow group. There were no statistical differences in the infection rates. These data are interpreted to suggest that daily uncontrollable variables which may produce infections are minimized by the use of laminar air-flow operating rooms.
对183例全髋关节置换手术进行了7年的随访，并对感染情况进行了评估。87例手术在水平层流手术室进行，89例在没有层流的传统手术室进行。层流组有2例感染（2.2%），传统手术室有6例感染（6.7%）。排除那些之前接受过手术的患者，传统手术室组76例中有3例感染（4%）。层流组68例中有1例感染（1%）。感染率无统计学差异。这些数据表明，使用层流手术室可将可能导致感染的日常不可控变量降至最低。
