Ropivacaine hydrochloride

How it works

It reversibly blocks voltage-gated sodium channels on neuronal membranes, preventing the initiation and propagation of action potentials and thereby producing conduction block.

Prescribing in practice

• Inadvertent intravascular injection can cause local anaesthetic systemic toxicity (LAST) with seizures and cardiac arrest, so aspirate before injection and have lipid emulsion rescue immediately available.
• Ropivacaine produces relatively more sensory than motor block, which is useful for labour and postoperative analgesia where ambulation is desired.
• It is generally considered less cardiotoxic than bupivacaine, but the same maximum-dose limits and resuscitation precautions still apply.

Monitoring

Monitor the cardiovascular and central nervous systems closely during and after administration for early signs of systemic toxicity, including circumoral numbness, tinnitus, and arrhythmia.

Counselling the patient

• Tell the patient the blocked area will feel numb and possibly weak for several hours and to protect it from injury.
• Advise the team to report perioral tingling, metallic taste, dizziness, or visual disturbance immediately.
• Explain that motor and sensory function should return gradually as the block wears off.

Evidence & guidelines

Ropivacaine is an established amide local anaesthetic recommended in UK regional anaesthesia practice, with management of systemic toxicity guided by AAGBI/Association of Anaesthetists guidance.