Q: Which 2 factors may increase the risk of Vasoplegia after CABG (Coronary Artery Bypass Graft)?

Answer:

1. On-pump CABG, and

2. Hypothermia during surgery

References:

1. Sun X, Zhang L, Hill PC, et al. (October 2008). "Is incidence of postoperative vasoplegic syndrome different between off-pump and on-pump coronary artery bypass grafting surgery?". Eur J Cardiothorac Surg 34 (4): 820-5. 

2.  Xu J, Long C, Qi R, Xie L, Shi S, Zhang Y (January 2002). "[Study of mechanism of vasoplegic syndrome for open heart surgery]". Zhonghua Yi Xue Za Zhi (in Chinese) 82 (2): 127–30.