Edema Flashcards
What are the 3 theories for the mechanism of HVPC for edema control due to inflammation?
- Negative charge repels negatively charged serum proteins. 2. Microvessel diameter is reduced. 3. Current reduces pore size in microvessel walls.
Which of the theories about HVPC mechanism for edema control is NOT currently supported?
The theory that microvessel diameter is reduced with the application of current.
What waveform is used for edema treatment when inflammation is present?
HVPC (High Volt Pulsed Current)
Is polarity important when using HVPC to treat edema caused by inflammation?
yes
What is the polarity of the treatment electrode for inflammation?
negative
What is the typical pulse duration for inflammation treatment?
Short (40-100 μs)
What is the typical frequency for inflammation treatment?
High (100-120 pps)
What is the On:Off time for inflammation treatment?
Continuous (always on)
What is the appropriate current amplitude for edema treatment due to inflammation?
Strong, but comfortable sensory.
What is the typical treatment time for edema due to inflammation?
20-30 minutes
How often should treatment be applied for edema due to inflammation?
1x or more per day
Where should the treatment electrode be placed for edema due to inflammation?
Negative polarity over the area of edema.
Where should the dispersive electrode be placed for edema due to inflammation?
Over another large flat area
What are the two main categories of edema discussed?
Edema due to inflammation and edema due to lack of muscle control (immobility).
What are some common systemic causes of edema?
Chronic venous disease, kidney disease, heart failure, cirrhosis, lymphedema.
What type of electrical stimulation is used for edema due to lack of muscle control?
Motor level electrical stimulation.
Is polarity important when treating edema due to lack of muscle control?
No
What is the goal of current amplitude when treating edema due to immobility?
To achieve a visible muscle contraction.
What are important treatment considerations for edema due to immobility?
Elevation during treatment and compression garment after treatment.
Should E-stim be used to treat edema with a systemic cause?
No
