Figure 1

primary patency rate. Kaplan–Meier curve compares the primary patency rate between patients with unfractionated heparin for three days (study group) and patients with prolonged anticoagulation.

primary patency rate. Kaplan–Meier curve compares the primary patency rate between patients with unfractionated heparin for three days (study group) and patients with prolonged anticoagulation.