Acquired weakness in the ICU: critical illness myopathy and polyneuropathy

Area of Science:

• Critical care medicine
• Neurology
• Intensive care unit (ICU) acquired neuromuscular disorders

Background:

• Sepsis and critical illnesses in the ICU are frequently linked to neuromuscular weakness.
• Critical illness myopathy (CIM) and critical illness polyneuropathy (CIP) are increasingly recognized in critically ill patients.
• These conditions can significantly impact patient recovery and long-term quality of life.

Purpose of the Study:

• To review the incidence, diagnosis, prognosis, and therapeutic options for CIM and CIP in the ICU.
• To highlight the importance of recognizing and diagnosing acquired neuromuscular weakness in critically ill patients.

Main Methods:

• Review of existing literature on CIM and CIP in the ICU setting.
• Discussion of diagnostic challenges and the role of electrophysiological testing (electromyography and nerve conduction studies).

Main Results:

• The incidence of CIM and CIP in the ICU is higher than previously thought.
• Diagnosis is challenging based on clinical and laboratory findings alone; electrodiagnostic testing is crucial.
• Prognostic information is limited, and specific therapies to improve outcomes are lacking.

Conclusions:

• Acquired neuromuscular weakness in the ICU is a significant issue affecting a substantial number of patients.
• While diagnostic tools are available, more research is essential for better prognostic understanding and therapeutic strategies.
• Addressing CIM and CIP is vital for improving long-term patient outcomes after critical illness.