Table 2.

The clinical data of patients with tumors in the inferior vena cava.

Case	Preoperative thrombosis	Operation durations (min)	Blood losses (ml)	Intraoperative blood transfusion	Anticoagulant solution
1	Medium risk	225	1600	Red blood cell 4 u Plasma 200 ml	12 hours after surgery, LMWH 5000 u ih qd
2	Medium risk	430	2500	Red blood cell 10 u Plasma 1000 ml	24 h after surgery, LMWH 5000 u ih qd
3	Medium risk	480	2000	Red blood cell 8 u Plasma 800 ml	12 hours after surgery, LMWH 5000 u ih q12 h
4	High risk	250	1200	Red blood cell 4 u	24 h after surgery, LMWH 5000 u ih q12 h
5 (first surgery)	High risk	215	500	No blood transfusion	12 hours after surgery, LMWH 5000 u ih q12 h
5 (secondary surgery)	High risk	355	2500	Red blood cell 12 u Plasma 400 ml	12 hours after surgery, LMWH 5000 u ih q12 h
6	High risk	195	1200	Red blood cell 4 u	Intraoperative death

LMWH: low molecular weight heparin.