Electrical Stimulation Flashcards
time it takes for the current to rise from zero to the peak intensity within each phase
Rise time
Refers to magnitude of current
Amplitude
amount of time it takes for one phase of a pulse.
phase duration
in ____ current phase duration and the pulse duration are the same whereas in _____there are two phase durations for each pulse
monophasic
biphasic
____ determines the number of pulses delivered through each channel per second.
Frequency
Refers to any alteration in the amplitude, duration or frequency of the current during a series of pulses or cycle
current modulation
___ uses electrical stimulation to create or enhance the performance of a functional activity. ie stimulation of the anterior tibialis and fibularous longus to produce df during the swing phase of gait
Functional electrical stimulation
Pts find shorter ___ _____ more comfortable when targeting smaller muscles and longer ___ ____ more comfortable when tx larger muscles
pulse durations
A smooth tetanic contraction is usually produced at a frequency of __-__pulses per second.
35-50
Duty cycle for NMES is typically this ratio for on off
1:5
tx time for NMES is
10 -20 contractions (10 -20 min) 3x/week
This is characterized by delivery of electrical pulses having short duration and high frequency with low current amplitude.
Conventional
This has pulses of long duration and low frequency with moderate current amplitude. Tx time is normally
acupuncture like
20-45 min
Not used like conventional where pt use during activities of daily living since the muscle twitching can interfere with functional tasks.
This is characterized by delivery of electrical pulses having long duration and high frequency with moderate current amplitude. Application is shorter and the current amplitude is higher - used to minimize pain during therapeutic activities that may be painful. Tx time is
Brief intense TENS
15 min
These ions are ____ with regards to iontophoresis: Magnesium, Copper, Zinc and Lidocaine
Positive