General epidural anesthesia how to determine the puncture point just now on a video said it is the surgical incision midpoint corresponding to the spinal cord segments to speak me confused

Clinical epidural anesthesia operation, generally choose the C7-L5 intervertebral space for puncture, generally referred to as T6 or higher for high epidural, high epidural anesthesia risk is greater, and now generally do not use. In addition sacral block also belongs to epidural anesthesia.

For the heel, the L3-4 gap is usually chosen for puncture, and the tube can be placed caudally.L4-5 puncture may be difficult.

The effect of epidural anesthesia is to block several segments of the spinal nerves, for example, if you choose the L3-4 puncture, the plane of anesthesia is usually around T12-S1.