Feeding interruptions for extubation and other procedures

Area of Science:

• Critical Care Medicine
• Gastroenterology
• Surgical Nutrition

Background:

• Feeding interruptions before extubation are common in ICUs, often based on historical anesthetic practices.
• The physiological rationale for fasting before extubation is debated, with limited evidence of efficacy in reducing gastric content or aspiration risk.

Purpose of the Study:

• To review evidence on feeding interruptions before extubation and other ICU procedures.
• To analyze physiological mechanisms, risks, and clinical outcomes of feeding interruptions.
• To explore current practices, recommendations, and innovations in peri-extubation nutrition management.

Main Methods:

• Systematic review of available evidence, including clinical studies and guidelines.
• Analysis of physiological mechanisms related to feeding and aspiration.
• Evaluation of recent studies, such as the Ambroisie trial, on peri-extubation nutrition.

Main Results:

• Fasting before extubation is a heterogeneous practice; continuing enteral nutrition up to extubation is not inferior to 6-hour fasting for extubation failure.
• Physiologically, fasting appears ineffective for reducing gastric content or preventing aspiration.
• Evidence for fasting in other ICU procedures is mixed; continuing nutrition is reasonable for some invasive procedures, but risks exist for others like percutaneous tracheotomy.

Conclusions:

• Continuing enteral nutrition until extubation is a viable alternative to traditional 6-hour fasting, without increasing extubation failure.
• Current practices regarding feeding interruptions in ICUs require re-evaluation based on emerging clinical evidence.
• Further research is needed to optimize nutrition management during invasive procedures in the ICU.