0
edits
Venae Cavae: Difference between revisions
no edit summary
No edit summary |
No edit summary |
||
| (One intermediate revision by the same user not shown) | |||
| Line 16: | Line 16: | ||
==Respiratory failure== | ==Respiratory failure== | ||
In a normal RA pressure collapses the VCI in 80% of the cases, >40% (measured at | In a normal RA pressure collapses the VCI in 80% of the cases, >40% (measured at the mouth of the hepatic vein). ±40% collapse VCI corresponds to a pressure of 8-10mmHg. At a collapse of 60-70%, the pressure in the VCI most often 2-4mmHg. At a collapse <40%, the VCI pressure >10mmHg (85%). When dilated, not collapsing VCI can pressure 20-25mmHg. | ||
==Echocardiographic view== | ==Echocardiographic view== | ||
{| class="wikitable" cellpadding="0" cellspacing="0" border="0" width=" | {| class="wikitable" cellpadding="0" cellspacing="0" border="0" width="800px" | ||
|- | |- | ||
|[[Image:SubcostaalVCI.png| | |[[Image:SubcostaalVCI.png|400px]] | ||
|[[Image:VCImmode01.jpg| | |[[Image:VCImmode01.jpg|400px]] | ||
|- | |- | ||
!Subcostale view | !Subcostale view | ||
| Line 32: | Line 32: | ||
Because in most cases VCI is perpendicular to the beam in the ultrasound image running, the flow pattern of the hepatic vein viewed . This is the same as VCI, only the hepatic vein is parallel to the sound beam . | Because in most cases VCI is perpendicular to the beam in the ultrasound image running, the flow pattern of the hepatic vein viewed . This is the same as VCI, only the hepatic vein is parallel to the sound beam . | ||
{| class="wikitable" cellpadding="0" cellspacing="0" border="0" width=" | {| class="wikitable" cellpadding="0" cellspacing="0" border="0" width="800px" | ||
|- | |- | ||
|[[Image:Levervene02.jpg| | |[[Image:Levervene02.jpg|400px]] | ||
|[[Image:Hepaticveinrefersal01.jpg| | |[[Image:Hepaticveinrefersal01.jpg|400px]] | ||
|- | |- | ||
!Normal hepatic vein flow | !Normal hepatic vein flow | ||