PT Question of the week – TENS use during labor and birthing

You have decided to use a TENS unit on a woman during labor and birth to decrease pain perception. Which of the following is the most effective technique in this situation?

1. Place the electrodes over the upper abdominal during the first stages of labor and over the lower abdominals during the later stages of labor
2. Place the electrodes over the paraspinals at the L5 level and S1 level throughout labor and delivery
3. Place the electrodes in a V pattern above the pubic region during labor and delivery
4. Place the electrodes over the paraspinals at the L1 and S1 level initially during labor, and over the pubic region during the latter stages

The solution will be posted in a few days.