%0 Journal Article %T Host Microbiome Threats in the Intensive Care Unit. %A May AK %J Surg Infect (Larchmt) %V 24 %N 3 %D Apr 2023 %M 37010970 %F 1.853 %R 10.1089/sur.2023.029 %X Human microbiota demonstrate diversity and balance that is adaptive for the host and supports maintaining homeostasis. Although acute illness or injury may derange microbiota diversity and the proportion of potentially pathogenic microbes, that derangement may be further exacerbated by commonly deployed intensive care unit (ICU) therapeutic and practices. These include antibiotic administration, delayed luminal nutrition, acid suppression, and vasopressor infusion. Furthermore, the local ICU microbial ecology, regardless of disinfection practices, shapes the patient's microbiota, especially with the acquisition of multi-drug-resistant pathogens. Current approaches to protect a normal microbiome, or restore a deranged one, are part of a multifaceted approach that may include antibiotic stewardship and infection control practices as microbiome-directed therapeutics emerge.