Neuromuscular blockade in the intensive care unit

Area of Science:

• Critical Care Medicine
• Pharmacology
• Anesthesiology

Background:

• Neuromuscular blocking agents (NMBAs) are indispensable in intensive care units (ICUs), primarily to facilitate mechanical ventilation.
• The ideal NMBA would possess specific characteristics, including nondepolarization, no accumulation, easy titration, rapid onset/offset, independence from organ function for metabolism, and absence of toxic metabolites.

Purpose of the Study:

• To review the current landscape of NMBAs used in critical care.
• To highlight the limitations of existing agents and the importance of individualized patient selection.
• To emphasize the necessity of a comprehensive management plan and monitoring for NMBA use.

Main Methods:

• Review of current literature on neuromuscular blocking agents in the ICU setting.
• Classification of existing NMBAs into aminosteroids and benzylisoquinoliniums.
• Discussion of clinical application, patient selection criteria, and monitoring techniques.

Main Results:

• Current NMBAs, categorized as aminosteroids or benzylisoquinoliniums, exhibit varying features but none meet all ideal criteria.
• Individual patient characteristics dictate the optimal NMBA choice.
• Effective management requires a holistic approach, including monitoring neuromuscular blockade via peripheral nerve stimulation.

Conclusions:

• While essential for critical illness management, NMBAs carry risks such as prolonged drug effect and acute quadriplegic myopathy, potentially leading to extended rehabilitation.
• Cautious and structured utilization of NMBAs is urged to mitigate complications and ensure successful patient outcomes.