abdominal doppler

Think of Doppler as a

Traffic reporter for blood

Instead of just showing a blood vessel, Doppler tells you what

The blood is doing inside it

A normal vessel shows that blood is ______ but a blocked vessel shows that ___ blood is moving

Moving, no

For a blood vessel, Doppler shows

flow

For the gallbladder or a cyst, Doppler shows

No flow

If color appears, it is probably a

Vessel

Hepatopetal

Toward the liver

Hepatofugal

Away from the liver

Hepatopetal is _____ in the portal vein flow, while hepatofugal is usually _____ in the portal vein flow

Normal, abnormal

During stenosis blood

Speeds up

Stenosis causes _____ due to blood speed

Turbulence

Aneurysms make the vessel wall

Stretch outward

Blood flow becomes _____ due to aneurysms

Abnormal

What often develops extra blood vessels

Tumors

Doppler helps determine whether tissue has

Blood flow

_____ graph the Doppler creates

Waveform

The graph tells the

Story of blood flow

Waveforms can show

Direction, speed, resistance, turbulence

Shape provides information on

Vascular impedance

Impedance equals

Resistance

Spectral analysis tells

Velocity and turbulence

Arteries leave

The heart

Every heartbeat creates a

Surge of blood

Systole

Heart squeezing

Systole is when blood moves

Fastest

The tallest peak on the graph happens during

Systole

Veins ____ blood to the heart

Return

Veins waveform characteristics

Caller, less pulsatile, low velocity

The hepatic vein sit right next to the heart, because of this they become

Pulsatile

Hepatic veins often have a

Triphasic waveform

Non-resistive waveform means the organ needs blood

All the time

Examples of organs that need blood all the time

Renal artery, hepatic artery, internal carotid artery

When blood keeps flowing, even when the heart relaxes, this is a

High diastolic flow

Heart squeezes

Systole

Heart relaxes

Diastole