Preparing the patient

Ensure there are no contraindications to performing a FIB.

Gain informed consent by discussing the risks and benefits. Include the following risks:

• Block failure (20%)
• Nerve damage
• Bleeding
• Infection
• LA toxicity, including the early signs of toxicity so the patient can report them immediately (see later)

Talk them through the procedure and allow them to ask questions. Consent should be documented in the patient’s notes.

Once this is done, position the patient flat on the bed (slight elevation of the head can be possible) with the leg slightly abducted and externally rotated (as pain allows).

Ensure there is a working IV cannula and the patient is connected to a cardiac monitor.