不同染色试剂和时间对组织抗酸杆菌染色的影响及其质量控制的意义

摘要

Objective To observe the effect of different staining reagent and time on acid fast bacilli staining and study its quality control measures.Methods We collected 38 cases for positive acid fast bacilli stain.Every wax blocked into 4 pieces,with different staining reagent and time of acid fast staining.Results Using xylene and ethanol staining for 20 minutes,acid fast bacilli was discontinuous and red punctate.Zero cases were positive and the positive rate was 0%.Turpentine dyeing for 1 5 minutes group,acid fast bacilli was clear,bright red,slightly bent branched,and easy to identify.A total of 34 cases were positive and posi-tive rate was 89%.Turpentine dyeing process for 20 minutes,the whole background was red,and was not easy identification.A total of 28 cases were positive and the positive rate was 74%.Turpentine dyeing for 30 minutes,the background was entirely deep red, and was hard to discern the acid fast bacilli.A total of 27 cases were positive and the positive rate was 71%.Conclusion Different staining reagent and time had different positive staining results.Suitable turpentine process was stained for 1 5 minutes for acid fast bacilli.%目的：观察不同染色试剂和时间对组织抗酸杆菌染色结果的影响，并探讨其质量控制措施。方法搜集抗酸杆菌染色阳性病例共38例，取带菌落的典型组织蜡块，每个蜡块切片4张，用不同的染色试剂和时间进行抗酸染色。结果采用二甲苯及乙醇流程染色20 min 组在显微镜下观察到抗酸杆菌明显淡弱，抗酸杆菌区域呈不连续的模糊淡红色小点，阳性0例，阳性率0%；松节油流程染色15 min 组在显微镜下观察到抗酸杆菌清晰，呈红色，微弯曲分枝状，容易识别辨认，阳性34例，阳性率89%；松节油流程染色20 min 组在显微镜下观察到抗酸杆菌区域整个背景呈红色，不易辨识抗酸杆菌，阳性28例，阳性率74%；松节油流程染色30 min 组，在显微镜下观察到整个抗酸杆菌区域呈深红色，难以辨识抗酸杆菌，阳性27例，阳性率71%。结论不同染色试剂和时间对抗酸杆菌染色阳性结果有明显差异；组织抗酸杆菌适宜松节油流程设定染色15 min 组。