Final answer:
The incidence of epidural spread after lumbar plexus psoas block is generally rare, with a reported incidence rate of 2.5%. Necessary precautions should be taken to minimize the risk.
Step-by-step explanation:
The incidence of epidural spread after lumbar plexus psoas block can vary depending on various factors, such as the technique used and the skill of the practitioner.
However, it is generally considered to be a rare complication of the procedure. A study published in the journal Regional Anesthesia and Pain Medicine reported an incidence rate of epidural spread of 2.5% in patients undergoing lumbar plexus psoas block.
Nevertheless, it is important for the healthcare provider to be aware of this potential complication and take necessary precautions to minimize the risk, such as using a small volume of local anesthetic and monitoring the patient closely.