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[Cardiac arrest and local anaesthetics]
1AP-HP, hôpitaux universitaires Paris-Sud, département d'anesthésie-réanimation, 94275 Le Kremlin Bicêtre cedex, France. jean-xavier.mazoit@u-psud.fr
Presse Medicale (Paris, France : 1983)
|June 19, 2012
Summary
Local anesthetics can cause cardiac arrest, but prompt resuscitation with lipid emulsion can be life-saving. Prevention through careful injection techniques is crucial for patient safety.
Area of Science:
- Anesthesiology
- Cardiology
- Toxicology
Background:
- Local anesthetics (LAs) are widely used for pain management.
- Rapid absorption or intravascular injection of LAs can lead to severe cardiotoxicity.
- Long-acting LAs like bupivacaine are commonly implicated, but lidocaine also poses a risk.
Observation:
- Central nervous system (CNS) toxicity, including seizures, typically precedes cardiac events.
- Cardiac arrhythmias are a critical complication following CNS signs.
- Intravenous lipid emulsion (ILE) is an effective treatment for LA-induced cardiotoxicity.
Findings:
- ILE, administered as a 100-150mL bolus of 20% Intralipid, can successfully reverse cardiac arrhythmias.
- Effective resuscitation requires immediate intervention and adequate coronary blood flow for ILE efficacy.
- Immediate resuscitation maneuvers are critical for survival.
Implications:
- Clinicians must be aware of the cardiotoxic potential of all local anesthetics, including lidocaine.
- Proper injection techniques, including dose control, slow administration, and aspiration, are essential for preventing toxicity.
- Prompt recognition and management of local anesthetic systemic toxicity (LAST) are vital for patient outcomes.
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