Vena Cava Filters Clinical Trial
Official title:
Evaluation of the Influence of Body Position on the Inferior Vena Cava (IVC) Diameter
To determine if laying down or standing up changes the diameter of the inferior vena cava.
Patients are referred for IVC(inferior vena cava)filter placement secondary to trauma,
surgery, a fractured pelvis or known blood clots in the lower extremities. The filter is
placed to prevent blood clots from traveling into the lungs. The filters are placed during a
interventional radiology procedure. During the procedure the diameter of the IVC(inferior
vena cava)is measured with the patient in a horizontal position (laying down). The blood
pressure in the IVC when a patient is in this position is relatively low in normal
circumstances, but may increase substantially when the patient is vertical with secondary
dilation of the IVC(inferior vena cava).
Migration of IVC(inferior vena cava)filters is not frequent; however it is a serious
complication, which may be caused by changes in the diameter of the IVC(inferior vena
cava)related to changes in the position of the body and/or increased pressure in the
abdomen.
The purpose of this study is to evaluate how much postural changes of the body affect the
diameter of the IVC(inferior vena cava).
For research purposes patients will have an intravascular ultrasound (IVUS) performed to
measure the IVC diameter before and after a Valsalva maneuver (having the subject hold their
breath and bear down as if they were having a bowel movement). The angiographic table will
be elevated and the measurements will be repeated.
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| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Completed |
NCT02757001 -
Inferior Vena Cava Retrievable Filters: Spanish Register
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