4Teo DT, Lim TW. Transmission of tuberculosis from patient to healthcare workers in the anaesthesia context. Ann Acad Med Singapore. 2004, 33:95.
5Vezina DP, Trepanier CA, Lessard MR, et al. Anesthesia breathing circuits protected by the DAR Barrierbac S breathing filter have a low bacterial contamination rate. Can J Anaesth,2001, 48: 748.
6Craven DE,Goularte TA,Make BJ. Contaminated condensate in me- chanical ventilator circuits. A risk factor for nosoeomial pneumonia? [J]. Am Rev Respir Dis, 1984,129(4):625-628.
7Rathgeber J,Kietzmann D,Mergeryan H,et al. Prevention of patient bacterial contamination of anaesthesia-circle-systems: a clinical study of the contamination risk and performance of different heat and moisture exchangers with eleetret filter (HMEF)[J]. Eur J Anaesthe- siol, 1997,14(4) :368-373.
8De Castro Arai LA,Azevedo RB. Contamination of Anesthesia circuits by Pathogens [J]. Revista Brasileira de Anestesiologia,2011,61 ( 1 ) :50- 59.
9Germain JM ,Carbonne A,Thiers V ,et al. Patient-to-patient trans- mission of hepatitis C virus through the use of muhidose vials during general anesthesia [J]. Infection Control and Hospital Epidemiology, 2005,26 ( 9 ) : 789-792.
10Helling TS,Van WC,Krantz S,et al. The value of clinical judgment in the diagnosis of nosocomial pneumonia [J]. Am J Surg, 1996, 171 (6) :570-575.
