1. End-to-side venous anastomoses… a patency test
A.N Pandya, N Vaingankar, I Grant, N.K James 
British Journal of Plastic Surgery 
Volume 56, Issue 8, Pages (December 2003)
DOI: /j.bjps

2. Fig. 1
Occlusion of the recipient vein between anastomosis and the peripheral circulation by a microvascular clamp.
British Journal of Plastic Surgery  , DOI: ( /j.bjps )

3. Fig. 2
Occlusion of the recipient vein between the anastomosis and the direction of venous blood flow.
British Journal of Plastic Surgery  , DOI: ( /j.bjps )

4. Fig. 3
Ballooning of venous segment between the two clamps demonstrating and confirming blood flow across the anastomosis.
British Journal of Plastic Surgery  , DOI: ( /j.bjps )