Chapter 8 Flashcards
Groin to knee is termed as?
Thigh
LE anatomy is described as?
Whole limb
Knee to foot is termed as?
Leg or lower leg
What size frequency probe do we normally and what do we use for deeper and bigger legs?
Normal== 5mhz
Deeper=== 3.5mhz
What’s patient position for LE scanning? And what’s the point?
- Reverse trendelenberg
- Semi-fowlers
10-20 degrees below the heart
Why do we scan in transverse?
- Demonstrate compressibility
2. Keep track of multiple vessels
What is the best plane mid thigh?
Medial
What is the best plane at 3rd of the thigh?
Anterior
What is the best approach for the popliteal?
Posterior
How often do we compress?
2-3 cm
What described the best acoustic window mid to third thigh?
Quadriceps femoris
According venous terminology what is the SFV and why?
Femoral vein b/c many pts being sent home w/o proper treatment
Long saphenous is now called?
Great saphenous
Lesser saphenous is now called?
Small saphenous
Why was it necessary to change the name of long and lesser saphenous?
Confusion b/c of similar abbreviations of LS
What is a Bakers cyst and where are they found?
It is accumulations of synovial fluid from the knee joint, that causes pain and swelling. They are found in the popliteal space.
Name the notable Landmarks in lower leg?
- Tibula
- Fibula
- Soleuo septum
- Interocceus membrane
Name the 2 muscles in the lower leg?
- Gastrocnemius (superficial)
2. Soleus (deep)
What is the soleuo septum?
- Fascia border
- Drains into soleus muscle
- Where you find the posterior tibials
What is the interosseous septum?
- Fascia between the bones
- Defines back interior compartment
- Landmark for anterior tibials
3 reasons to scan the saphenous vein?
- Assess for thrombis
- Evaluate the veins
- Look for reflux
What is the probe preference for saph study?
7-10 mHz
What are the 6 characteristics you can assess listening to a vein?
- Patency
- Spontaneity
- Phasicity
- Nonpulsatility
- Augmentation
- Competence
Define patency?
Vessel is open and flowing
Define Spontaneity
Normal characteristic w/o resorting to compressions to bring flow signal.
Define phasicity?
Signal rises and falls in phase with respiration
Inspiration does what to venous flow?
Increases abdominal pressure which brings less flow from legs through IVC.
What does expiration do to venous flow?
Decreases abdominal pressure where flow resumes on Doppler display.
Define non pulsatility?
- Non elevated R Heart pressure
- Fluid overload increasing central venous pressure
- More resistance to flow
Define augmentation?
Increase flow from compression distal to probe
Obstruction will abolish/diminish augmentation
Define competence?
- Normal flow showing valves working
2. Flow that stops with proximal compression resulting in no reflux
Good compression doesn’t rule out…..
- Nonocclusive thrombis
2. Isolated calf clots
