目的 分析外科手術部位感染率過低的原因，掌握手術部位感染診斷標準，減少醫院感染漏報，及時發現醫院感染流行趨勢，采取控制措施，防止醫院感染暴發。 方法 選擇開展較多、手術部位一旦發生感染對患者安全威脅性較大的手術：包括膽囊切除或（和）膽管手術，結腸、直腸切除術，闌尾切除術，疝手術，乳房切除術，剖宮產，子宮切除術及附件切除術，全髖關節置換術，食道賁門手術，腰椎間盤摘除術，監測時間為2011年1月1日－6月30日及2012年1月1日－6月30日，共監測1 180例手術，對手術部位感染率進行對比分析。 結果 2011年半年監測手術部位感染率1.99%，調整感染率4.74%；比國內報道低6～9倍；通過分析原因，對醫院感染診斷標準再培訓、加強病原微生物送檢等，2012年半年監測手術部位感染率4.68%，調整感染率32.12%；與2011年比較差異有統計學意義（χ2=141.841，P=0.000）。 結論 手術部位感染率偏低的原因是醫生漏報所致；采取整改措施后，提高了手術部位感染的識別能力，減少了漏報，對及時發現醫院感染暴發具有重要意義。
Objective To analyze the main reason of prolonged latency phase and the impact of prolonged latency phase on the delivery style. Methods The pregnant women with prolonged latency phase (n=92) and normal pregnant women (n=100) were retrospectively analyzed in the maternity department of the second affiliated hospital of Kunming medical college in 2007. Results There was no significant difference in the pelvis and fetal-pelvis in the two groups. The number of the pregnant women with fetal body weight (gt;4 000 g) in the prolonged latency phase group was obviously larger than that in the normal pregnant women group, with the significant difference. As to the situation of fetal position, there were more occipitoanterior positions and fewer occipitoposterior as well as occipitotransterse positions in the prolonged latency phase group (Plt;0.01). In the prolonged latency phase group, the pregnant women with normal delivery were fewer and the uterine-incision deliveries were more than those in the normal group, with the significant difference. Conclusion The prolonged latency phase prognosticates the incidence of dystocia. We should decide if the pregnant women have the tendency of prolonged latency phase before delivery and deal with it in time so as to prevent the occurrence of dystocia.