Objective To train health care workers (HCWs)by method of conventional training plus survey of hand contamination status,the influence of two kinds of methods in hand hygiene compliance of HCWs was evalua-ted.Methods From November 2013 to April 2014,all HCWs in a cardiovascular internal medicine department were as trained subjects,they were divided into two groups (trial group and control group).Hand hygiene compli-ance status was investigated 1 month before training.In the first month after training,conventional training method was adopted by both groups,from the second to fifth month,conventional training plus hand contamination survey was adopted by trial group,hand hygiene compliance between two groups were compared.Results Hand hygiene compliance rates of trial group and control group was 42.63% (107/251 )and 41 .80% (102/244)respectively be-fore training,there was no significant difference(P >0.05 ).In the first and second month after training,hand hygiene compliance rate of trial group was 55.70% (132/237)and 63.11 % (154/244)respectively,control group was 56.52% (130/230)and 62.61 % (149/238)respectively,compared with pre-training,the differences were sig-nificant (both P <0.05),but the difference was not significant between two groups(P >0.05);From the third to fifth month,hand hygiene compliance rates of trial group was 60.73%(150/247),61 .44%(145/236),and 61 .22%(150/245)respectively,control group was 51 .68%(123/238),51 .02%(125/245 ),and 52.32% (124/237)respec-tively,there was significant difference between two groups(P <0.05).Conclusion Conventional training combined with survey of hand contamination status can promote hand hygiene compliance of HCWs.

Objective:To compare the advantages of nano carbon suspension mapping method and non dye method in the number of axillary lymph nodes detected during axillary lymph node dissection and axillary micro lymph nodes detected after neoadjuvant chemotherapy for breast cancer.Methods:From January 1st, 2018 to July 1st, 2018, 66 breast cancer patients who were to undergo axillary lymph node dissection after new adjuvant treatment were selected for the prospective study.Using the method of random number table, the patients were randomly divided into two groups: the group of nano carbon mapping (33 cases) and the control group (33 cases). After 24 hours subcutaneous injection of nano carbon before operation, axillary lymph node dissection and direct axillary lymph node dissection without dye were used.The number of axillary lymph nodes and the number of micro axillary lymph nodes in the two groups were observed.Results:The number of axillary lymph nodes and micro lymph nodes in the nano carbon mapping group were higher than those in the control group.The differences were statistically significant (the number of axillary lymph nodes were (19.3±6.2) vs (14.9±6.7), P=0.007; the number of micro-lymph nodes were 2.0(0.5, 3.0) vs 0(0, 1.0), Z=-4.328, P<0.001). Conclusion:Nano carbon suspension mapping can increase the number of lymph nodes detected in axillary lymph node dissection after neoadjuvant chemotherapy for breast cancer, and also has advantages in the detection of some small axillary lymph nodes that are not easy to find.