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H-Wave - Coggle Diagram
H-Wave
Contraindications
Sepsis
Heart problems e.g. murmur
An animal subject to seizures
Pregnancy
Near the brain
Over the chest
Over carotid artery
Undiagnosed pain
Tumours
Target tissue
Oedema
Sub-acute or chronic soft tissue damage
Muscle spasm
Muscle re-education
Pain
Nerve damage
Vasodilation
Practical application and settings
Pain relief (high)
Pulse rate: 60Hz
Duration: 10 minutes
Therapy (low)
Pulse rate: 2Hz
Duration: 20 minutes
Used more frequently
Induction phase
20 minutes
3 times first week, twice on second week
Transition phase
20 minutes
Once a week
Maintenance phase
20 minutes
As and when necessary
What is it?
Bipolar exponential decaying wave form
Mimics hoffman reflex
Greater and deeper penetration at lower current
Cellular effects
Low frequency
Therapeutic mode
Motor points
Non-painful contraction
Compresses vessels
Pump action
Increased removal of fluids
Reduced oedema
Manufacturers claims
Stimulates smooth muscle fibres within lymph vessels via an exponentially decaying waveform
Increases blood flow via vasodilation (Nitric oxide dependent)
Rhythmic milking action produces a negative pressure causing transcapillary fluid shifts
High frequency
Pain gate theory
Excites sensory nerves
A-beta fibres
Non-painful signal
Projection neuron
Blocks transmission of pain
C-fibres
Sodium pump theory
Sodium channel inhibition
Disrupts action potential of nerves
Blocks transmission of pain