The microbiome: implications for perioperative and critical care

Area of Science:

• Microbiome research
• Host-microbe interactions
• Critical care medicine

Background:

• The host-microbiota relationship is crucial for human health and recovery from illness.
• Perioperative and critical illness can disrupt this delicate balance, impacting patient outcomes.
• Understanding these disruptions is key to developing targeted interventions.

Purpose of the Study:

• To review studies on the effects of perioperative and critical illness stress on the microbiota.
• To explore potential microbiome-mediated interventions for improving patient recovery.
• To synthesize current knowledge on the host-microbiota relationship in surgical and ICU settings.

Main Methods:

• Systematic review of key studies by organ system.
• Analysis of the impact of preoperative, intraoperative, and postoperative stressors.
• Focus on alterations in commensal microflora and pathogen virulence.

Main Results:

• Perioperative interventions profoundly impact the gut microbiota, though direct links to health outcomes are unclear.
• Preoperative, intraoperative, and postoperative stressors are associated with significant microbiota alterations.
• Factors like antibiotics and opioids can promote pathogen growth and lead to infections and organ failure.

Conclusions:

• The microbiome plays a significant role in perioperative and ICU settings, but current data is primarily descriptive.
• Mechanistic studies are increasingly elucidating the bidirectional host-microbiota relationship.
• Future clinical studies will likely lead to improved therapies for microbiota restoration.