Ropivacaine (Orthopaedic Nerve Blocks)

How it works

It reversibly blocks voltage-gated sodium channels in nerve membranes, preventing the conduction of pain impulses along the nerve.

Prescribing in practice

• Inadvertent intravascular injection or excessive dose can cause local anaesthetic systemic toxicity, so aspirate before injection, use incremental dosing and have lipid emulsion and resuscitation facilities available.
• Ropivacaine causes less cardiotoxicity than bupivacaine but the same toxicity precautions apply when calculating maximum safe doses.
• Account for the regional block when assessing limb perfusion, motor power and pressure-area risk during the period of numbness.

Monitoring

Monitor for early signs of systemic toxicity (perioral tingling, tinnitus, arrhythmia) and assess block extent, motor function and limb safety afterwards.

Counselling the patient

• The limb will be numb and weak for some hours; protect it and avoid bearing weight until sensation returns.
• Start regular background painkillers before the block wears off.
• Report tingling around the mouth, ringing in the ears, or dizziness immediately.

Evidence & guidelines

Ropivacaine is widely used for regional anaesthesia in UK orthopaedic practice, with safety underpinned by local anaesthetic systemic toxicity management guidance.