DMS 102 - Unit one - part 3

Doppler blood flow analysis:

presence or absence of flow, direction of flow, disturbance of flow, tissue characterization, doppler waveform, measure velocity

disturbance of flow (w doppler):

increased velocity vs obstruction

atheroma, AV fistula, Pseudoaneurysm, aneurysmal dilation

Tissue Chacterization in doppler:

currently researching

characterize by specific perfusion patters

Doppler waveform analysis:

shape of waveform provides info on vascular impedence of organ vessel supplies

• slower continuous flow vs high velocity flow

measures velocity of blood flow (doppler):

normal vs turbulent flow

detect stenosis

spectral analysis (doppler)

shows velocity and direction

arterial flow pulsates with

cardiac cycle

• peak systole through end diastole velocities

venous flow shows

no or very little pulsatility

venous flow has _____ flow than arteries

lower

phasic patterns may be seen in

veins

Celiac trunk is 1-2cm ____ to diaphragm

caudal

Celiac trunk distributes blood to:

liver, spleen, GB, esophagus, stomach, pancreas, and duodenum

SMA is 1-2cm _______ to celiac trunk

inferior

The SMA runs _______ to neck/body of pancreas

posterior

SMA supplies blood to the:

small intestine, cecum, ascending and transverse colon

SMA runs parallel to the

aorta in long

If angle of SMA is > than 15 degrees it is concidered

lymphadenopathy

IMA arises near

bifurcation (L 3-4)

IMA supplies blood to

L transverse, descending, and sigmoid colon, and rectum