1. Flow waveform assessment of polytetrafluoroethylene grafts for reconstruction of lower extremity arteries 
Kenichiro Okadome, M.D., Taizo Miyazaki, M.D., Hiroshi Eguchi, M.D., Takashi Yukizane, M.D., Yoichi Muto, M.D., Keizo Sugimachi, M.D. 
Journal of Vascular Surgery 
Volume 4, Issue 3, Pages (September 1986)
DOI: / (86)
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

2. Fig. 1
Classification of flow waveforms. Type 0: a steep acceleration in systole followed by a steep deceleration in diastole with a reverse flow in the last of diastole; type I: a steep acceleration and deceleration with no reverse flow wave in diastole; and type II: a deceleration characterized by a gentle sloping at the last half of diastole.
Journal of Vascular Surgery 1986 4, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

3. Fig. 2
Correlation of patency of PTFE femoropopliteal bypasses with preoperative ankle pressure index.
Journal of Vascular Surgery 1986 4, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

4. Fig. 3
Cumulative patency rate by life-table method for PTFE femoropopliteal grafts in patients with good (N = 16) (open circles) or poor (N = 22) (closed circles) distal runoff, according to angiographic assessment. The number with each time point indicates number of grafts observed to be patent for that length of time.
Journal of Vascular Surgery 1986 4, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

5. Fig. 4
Cumulative patency rate by life-table method for PTFE grafts with flow waveform of type 0 or I (N = 22) (open circles) or type II (N = 16) (closed circles) in reconstructed arteries. The number with each time point indicates number of grafts observed to be patent for that length of time.
Journal of Vascular Surgery 1986 4, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

6. Fig. 5
Cumulative patency rate by life-table method for femoropopliteal grafts with PTFE alone (N = 26) (closed circles) or PTFE/vein composite grafts (N = 12) (open circles). The number with each time point indicates number of grafts observed to be patent for that length of time.
Journal of Vascular Surgery 1986 4, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

7. Fig. 6
Cumulative patency rate by life-table method for femoropopliteal with type II flow waveform according to PTFE alone (N = 10) (closed circles) or PTFE/vein composite grafts (N = 6) (open cirles). The number with each time point indicates number of grafts observed to be patent for that length of time.
Journal of Vascular Surgery 1986 4, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

8. Fig. 7
Femoral arteriogram shows marked stenosis (arrows) at distal anastomosis in one patient who had undergone femoropopliteal PTFE bypass with type II flow waveform pattern 2 years before.
Journal of Vascular Surgery 1986 4, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions