To be done with the therapist or midwife
ELECTRICAL STIMULATION
1. Issues Related to Electrical Current and Patient Feedback
During vaginal stimulation, when the electrical current is applied, the patient may experience various sensations.
These sensations can help determine whether the stimulation is proceeding as expected.
- Sensation of contraction, cramp, or pressure pushing backward (rectum): normal
= probe correctly positioned on the retractors - A tingling sensation when the current passes through
= intensity below the threshold for a contractile response (increase the intensity)
= electrodes outside the motor point of the muscle - Sharp burning sensations with possible pain and minimal contraction
= sensitive mucosa, too dry, lack of lubrication - Painful sensation without contraction
= possible signs of denervation if the intensity exceeds 35 mA without motor responses - Sharp sensations toward the abdominal-pubic region
= probe inserted too deeply into the vagina (with ring probes) - Sensation of an electric current toward the vulvar entrance and the labia majora
= probe positioned too far outward between the puborectal and bulbospongiosus nerves (with ring probes) - The required intensity is abnormally high (more than 50 mA)
= indication of total peripheral neurogenic impairment if there is no contractile response
= indication of partial peripheral sensory denervation if there is a muscle response
2. Equipment-related issues
- The patient feels nothing when the intensity is increased
↳ The probe is not connected to the device
↳ The connection is faulty
↳ The connection is not inserted far enough into the female connector
↳ The cable wires are defective at the probe input
↳ The probe is defective
↳ The current (in mA) is insufficient
↳ The patient is postpartum and breastfeeding
- The current fluctuates
↳ Poor contact at the probe
↳ Poor contact in the probe wires
↳ Poor contact at the electrode solder joints
3. The probe isn’t working; the client feels nothing, and the device doesn’t recognize the probe
After checking all of the above, remove the probe, rinse it, clean it, put a little gel in your hand, connect the probe; press your fingers against the electrodes, select a frequency of 10 Hz, increase the intensity…
➢ If you don’t feel anything even after moving the cable around, then the probe is indeed defective,
➢ If you feel a tingling sensation in your hand, this means the probe is working and the problem stems from:
↳ either the patient’s lack of sensitivity
↳ or the fact that you did not insert the connectors deeply enough
BIOFEEDBACK
1. Calibration-related issues
The signal is unstable; there are saturation spikes and drops in the microvolt line
➟ Perform a new calibration
2. Problems related to the reference electrode
➟ Check the quality of the reference electrode
➟ Clean or shave the skin under the electrode
➟ Place the electrode on a bone
3. Recording Issues
➟ The curve is illegible (see calibration)
➟ The curve is not very stable, or is poorer than usual (patient experiencing hormonal fluctuations, or feces in the rectal bulb)
➟ The curve is irregular (vaginal environment not moist enough, too dry, hypohormonalization)
➟ The curve is too high and saturates (correct and lower the reference microvolt value)
If you have performed all of the above tests and the probe still does not work, follow our after-sales return procedure
