5Antunes PE, Ferrao de Oliveira J, Non-cardioplegic coronary surgery in patients with severe left ventricular dysfunction[ J]. Eur J Cardiothorac Surg,1999,16(3) :331 .
6WALLACEJL. Suctioning- atwo- edgedsword;Reducing the theory practicegap. Journal of Neon atal Nursing, 1998,6 (4): 12 ~ 17.