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0:00–0:07 seconds: Normal venous flow with respiratory variations (phasicity).
0:08–0:11 seconds: Valsalva maneuver resulting in the cessation of venous flow.
0:12–0:20 seconds: Augmentation of venous flow resulting from compression of the calf and the thigh (respectively).
0:20 seconds: End of the video aliasing due to too low filter gate setting (for the venous examination).