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術前のみの予防的抗菌薬投与で,従来の術中および術後抗菌薬投与法の場合と術後感染率に違いがあるかを調査した.対象は2003年11月から2007年12月までに術前感染症例を除いた,手術時間4時間以内の236例である.インストゥルメンテーション手術例は43例(18.2%),compromised host例は61例(25.8%)であった.対象全例は術前のみの抗菌薬投与で,術中および術後の追加投与を行わなかった.術後感染率は1.3%(3/236例)であり,従来の術中および術後抗菌薬投与群に比較し術後感染率,耐性菌出現率において低値を示していた.今回の結果から脊椎の短時間手術においては,術中および術後の抗菌薬投与は,術後感染予防に必ずしも効果があるとは言えないことがわかった.
We investigated whether a single preoperative dose protocol of antimicrobial prophylaxis (AMP) was effective for short duration spine surgery. Two-hundred thirty-six consecutive cases of spine surgery lasting less than 4 hours from November 2003 to December 2007 were included in this study. We excluded patients who had suffered preoperative infection. The postoperative infection rate was only 1.3% (3/236 cases), and this was lower than in the multiple dose protocol group cases which received intra-and postoperative AMP. This study suggested that only a single dose of preoperative AMP is efficient and sufficient to control postoperative surgical site infection in short duration spine surgery.
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