Paralysis diagnosis and therapy
12.4 Chronaxy/accommodation quotient
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This programme is used to perform a simple and rapid diagnosis.
It consists of 3 programme steps in which rheobase, chronaxie and the accomdation
thresholds are measured and the accompdation quotient determined.
Display screen
Rheobase
Threshold current to induce a minimal muscle twitch with a rectangular pulse of 1000
ms.
Identifying/assuming
rheobase
Step 1: Set to a low intensity
Step 2: Trigger a single pulse
Repeat steps 1 and 2 with increasing intensity until a minimum muscle twitch is
visible. With the first minimal muscle twitch, the rheobase value is determined.
Step 3: Accepting the rheobase value
With the acquisition of the detected pulse, the intensity is automatically set to twice
the rheobase value.
The intensity cannot be changed in this programme step.
Chronaxie
Pulse duration to induce a minimal muscle twitch at a threshold current value, which
corresponds to twice the rheobase value.
Identifying/assuming
chronaxie
Step 1: Increase (or possibly) decrease the pulse time gradually by activating the
arrow keys
Step 2: Trigger a single pulse
Repeat steps 1 and 2 until a minimum muscle twitch is visible.
With the first minimal
muscle twitch, the chronaxie value is determined.
Step 3: Accepting the chronaxie value
