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the unilateral block

Difficult to explain why the block is unilateral, more common with more than 4-5cm left in epidural space.

Possible there is physical reason why not spreading, may be simply down to catheter position.

Suggested techniques to resolve unilateral block include:

  • withdraw catheter 1cm

  • roll patient poor block side down and use PCEA/give bolus

  • resite epidural

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