TENS stands for transcutaneous electrical nerve stimulation. TENS machines are small, battery-operated devices that provide pain relief, using pulses of a mild electrical current, which is felt by the user as a tingling sensation.
Maternity TENS machines have four leads connected to sticky pads. These pads are placed on your back, with the pads either side of your spine. The pads are covered in a gel to help the electrical pulses pass through your skin more easily.
TENS machines have controls that you can use to adjust the frequency and strength of the pulses. There is also a boost button for you to press when you want maximum output from the machine to help you with a difficult contraction.
How does a TENS machine work?
No-one knows exactly how TENS works, although there are a number of theories. One is that the electrical pulses prevent pain signals from reaching your brain, while another is that the pulses stimulate your body to release its own natural pain killers, endorphins. TENS may help you to feel that you have control over your contractions and may also provide a distraction from them.
When and how should I use a TENS machine?
TENS seems to work best and give you the most effective pain relief if you start using it at the very beginning of labour. It takes about an hour for your body to respond, so don't give up after just a few minutes because it doesn't seem to be having an effect. Start with the controls at their lowest settings and turn them up gradually as your contractions gets stronger. Use the boost button at the peak of contractions.
TENS machine hire
I currently have five TENS machines. The option to borrow one of these (subject to availability) is included in my antenatal and birth doula packages. They are also available for anyone else to hire for £15, for up to 8 weeks.
When hiring a TENS machine you will be required to pay a deposit. This will be refunded when you return the machine, unless the machine is damaged beyond what could be considered reasonable wear and tear.
You will need two AA batteries to use the machine.