Sunday, August 15, 2010

valsalva maneuver

1- the patient is asked to do valsalva maneuver while the common femoral vein is being imaged transversely.
2-a normal response results in complete retardation of flow within the vein and resultant venous dilatation , the diameter increasing by at least 50%.
3-absence of this normal response is seen in intra luminal venous thrombosis,or external pressure applied on the vein by a pelvic tumor .
4- it could be done also with congestive heart failure

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