URR IVC Flashcards
what as no true venous valves?
IVC
the flap of tissue at the junction of the IVC with the right atrium that is necessary or fetal circulation?
eustachian valve
the IVC courses how to the aorta?
right, anterior above the umbilicus and posterior below
what happens to the IVC during inspiration and expiration?
inspiration: increases in diameter
expiration: decreases in diameter
what is the abnormal dilation of the IVC (measurements)?
> 2.5, > 2.1 at hte hepatic veins
the right gonadal vein empties into where?
the IVC
the left gonadal vein empties into where?
left renal vein
what are the only anterior branches of the IVC?
hepatic veins
what are the largest tributaries of the IVC?
hepatic veins
what is duplication of the IVC?
variant that commonly occurs below the renal vein
what is transposition of the IVC?
variant where IVC is on the left
what is interruption of the IVC?
intrahepatic portion doesnt develop, azygos vein drains from the pelvis
why would the IVC be dilated?
circulatory issues
-CHF
-Pulmonary HTN
-decrease in heart function
-electrolyte imbalance
biphasic flow in the portal vein is associated with what?
CHF
tumor invasion of the IVC most commonly occurs with what?
renal cell carcinoma
what is the most common type of IVC aneurysm?
saccular
types of IVC aneurysm?
- suprahepatic w/o obstruction
- associates with interruption
- infrarenal with out anomaly
- left sided IVC
the caudate lobe is drained by the what?
emissary
difference in hepatic veins in comparison to portal veins?
thinner, less echogenic walls, and increase in size
normal flow of hepatic vein?
triphasic
doppler angle should be what in hepatic vein?
0
what is budd chiari sydnrome?
-obstruction of hepatic vein by thrombus, stenosis, membrane, compression, or tumor
-causes: oral contraceptives, hepatocellular carcinoma, renal CA, and adrenal CA
-pain, jaundice, ascites, hepatomegaly, portal HTN, might see splenomegaly
number 1 cause of budd chiari syndrome?
thrombus
what does budd chiari cause?
hepatomegaly in acute phase, small liver, and splenomegaly if chronic
venae comitantes
vein that is paired and runs along an artery
the right renal vein runs how to the artery?
medial and anterior
where is the left renal vein in relation to the Ao?
between Ao and SMA
which renal vein is longer?
left
SMA compresses the left renal vein against Ao, can lead to thrombosis and left vascular congestion?
nutcracker syndrome
what can cause bilateral renal vein increased pulsatility?
CHF
renal vein thrombosis can cause what?
hematuria and acute renal failure
-risk for PE
-commonly caused by renal disease
the gonadal veins drain blood from where?
testicles or ovaries
the right gonadal vein drains directly from where?
IVC
the left gonadal vein empties into the left renal vein and has increased risk of what?
left sided varicocele
varicoceles have been linked to what?
infertility
ovarian vein normally crosses anterior to the what?
ureter as it travels cephalad
Syndrome where dilated ovarian vein can cause notching, dilation, or obstruction to the ureter
-most related to varicosities of ovarian vein or thrombosis
ovarian vein compression syndrome
