In August 2021, Hurricane Ida struck Louisiana as a near-category five storm, bringing massive devastation to the region’s healthcare infrastructure. In its aftermath, extreme heat coincided with record COVID-19 hospitalizations in the state, leaving minimal healthcare surge capacity remaining and medically vulnerable populations unprotected. Meanwhile, sparse pre-storm evacuations exposed prominent gaps in existing medical response plans designed to serve high-risk groups. Subsequently, Louisiana rapidly established a 250-bed alternative care site (ACS) within hard-hit New Orleans. This presentation highlights key considerations in the operation of the site and discusses which patient populations are most in need of medical support following tropical weather events.

The findings of this discussion are the result of after-action reviews, brief literature reviews, and the experiences of responders during Hurricane Ida. The presentation also draws on retrospective patient chart reviews from Louisiana’s prior alternative care sites.

Following Hurricane Ida, a post-storm alternative care site was rapidly established in New Orleans in partnership with a US Disaster Medical Assistance Team (DMAT). Operationalized in less than 72-hours, this site provided inpatient care to displaced persons with major chronic medical needs (e.g. home ventilators, hemodialysis, respiratory therapies), significant mobility impairment, wound care, and psychiatric illnesses. Incorporating Louisiana’s experience with a COVID-19 alternative care site, this facility far-exceeded the typical scope of medical shelters, simultaneously lessening medical surge on already-overburdened hospitals and meeting post-storm needs in the region.

Following extreme weather events in metropolitan areas, traumatic injuries and acute illness comprise a small proportion of the medical needs after the event. Accordingly, disaster medical responses must prepare to treat large numbers of chronic illness exacerbations that result from a loss of access to primary care, home health support, and auxiliary services. This approach efficiently leverages resources into lifesaving interventions and protects healthcare systems during times of high stress.