Nurses Are Critical Infrastructure for Hospitals Facing Extreme Heat, Experts Argue

As record-breaking temperatures sweep across the United States and heat-related emergency department visits continue to climb, a new editorial from researchers at the University of Pennsylvania School of Nursing argues that hospitals can no longer treat nurse staffing as a background operational detail. Instead, the authors contend, staffing levels and supportive work environments for nurses should be recognized as core emergency infrastructure, on par with cooling systems, surge capacity plans, and supply chains, when health systems prepare for extreme heat events. The editorial, published in Public Health Nursing, comes from the school’s Center for Health Outcomes and Policy Research, a group whose decades of work have linked nurse staffing and the practice environment to a wide range of patient outcomes, including mortality.

The editorial is authored by senior author Eileen T. Lake, the Edith Clemmer Steinbright Professor in Gerontology, Professor of Nursing and Sociology, and Associate Director of the Center for Health Outcomes and Policy Research, together with Domenique Villani, a predoctoral fellow at the center, and Ysabella Perez, a recent Penn graduate and research assistant at the center. Their central argument is straightforward but consequential: building genuine climate resilience into the health system requires ensuring that bedside nurses have the organizational capacity and the material resources needed to deliver timely care and continuous surveillance during heat events, when patient volumes can spike suddenly and patient conditions can deteriorate rapidly.

The physiological rationale behind this argument is well established in clinical medicine. Extreme heat places severe stress on the human body, particularly the cardiovascular system, which must work harder to dissipate heat through increased blood flow to the skin. In vulnerable populations, including older adults, people with chronic cardiovascular or respiratory disease, patients taking medications that impair thermoregulation, and those with limited access to cooling, prolonged heat exposure can progress from heat exhaustion to life-threatening heat stroke. Heat stroke is a medical emergency characterized by core body temperatures above roughly 40 degrees Celsius and central nervous system dysfunction, and it can trigger a cascade of complications including rhabdomyolysis, acute kidney injury, coagulopathy, and multi-organ failure. Surviving such a cascade depends heavily on early recognition and rapid, sustained intervention.

This is precisely where nursing care becomes decisive. The editorial emphasizes that the management of heat-related illness requires immediate and resource-intensive nursing surveillance to prevent complications and to catch the signs of rapid patient deterioration before they become irreversible. Continuous monitoring of vital signs, fluid balance, electrolyte status, and neurological function is the daily work of bedside nurses, and during a heat wave the volume of patients needing this level of attention can rise sharply at exactly the moment when a hospital’s workforce is under maximum strain. Nurses themselves are also exposed to the same environmental conditions, and heat events can affect staff wellbeing and performance, adding another layer of pressure on the workforce during surges.

The authors warn that insufficient staffing and inadequate organizational support can severely limit a health system’s ability to deliver standard-of-care treatments during the sudden volume surges that heat waves produce. A hospital may have the physical beds, the cooling capacity, and the IV fluids to handle an influx of heat-affected patients, but if there are not enough nurses to perform the frequent assessments, administer cooling protocols, titrate fluids, and escalate deteriorating patients to higher levels of care, the theoretical surge capacity fails in practice. In this sense, the editorial reframes nurse staffing not as a cost line to be minimized but as a functional limit on how much emergency care a hospital can actually deliver when environmental disasters strike.

The argument rests on a substantial body of research from the Center for Health Outcomes and Policy Research and collaborators, which has repeatedly demonstrated that the ratio of patients to nurses and the quality of the nurse work environment are associated with patient outcomes including mortality, failure to rescue, lengths of stay, and rates of complications. Studies in this tradition have shown that hospitals with better work environments, characterized by adequate staffing, strong nurse-physician relationships, nurse participation in decision-making, and supportive management, achieve better outcomes even at similar staffing levels. Extending this evidence base to climate-driven emergencies is a natural progression, and it suggests that the organizational features that protect patients in ordinary times become even more critical when the system is stressed by a heat crisis.

Looking forward, the editorial does not stop at diagnosis. It outlines actionable recommendations across four domains: research, education, practice, and policy. On the research side, the authors call for studies that specifically examine how staffing and work environment characteristics shape outcomes during heat events, filling a gap in the disaster preparedness literature that has traditionally focused on infectious disease outbreaks, mass casualty trauma, and hurricanes. On education, the implication is that nursing curricula and continuing professional development should prepare clinicians to recognize and manage heat-related illness and to understand the systems-level factors that determine whether such care can be delivered effectively during a surge.

In the domain of practice, the editorial urges health system leaders to incorporate nurse staffing and workplace environment investments directly into disaster preparedness planning, rather than treating workforce questions as separate from emergency management. Concretely, this could mean including staffing models in heat response plans, ensuring that nurses have the equipment and authority to implement cooling and monitoring protocols efficiently, and designing work environments that protect staff as well as patients during extreme temperatures. On the policy front, the authors’ message is directed at regulators, accreditors, and hospital administrators: if extreme heat is now a recurring, predictable public health emergency, then the workforce that delivers the front-line response deserves the same strategic investment and planning attention as any other piece of emergency infrastructure.

The broader context gives this argument urgency. Heat waves in the United States have grown more frequent, more intense, and longer-lasting in recent decades, consistent with the warming trend driven by climate change, and emergency departments in many regions have reported rising numbers of heat-related visits during recent summer seasons. Public health agencies have long emphasized individual-level precautions, such as hydration, air conditioning, and checking on vulnerable neighbors, but the hospital-level response has received comparatively less attention. The editorial’s contribution is to shift the focus from the community to the bedside, insisting that what happens inside the hospital, and specifically how many nurses are available and how well supported they are, is a measurable determinant of who survives a heat emergency.

The authors state their conclusion plainly: extreme heat is no longer just a public health issue, but an immediate hospital preparedness priority that requires treating nurse staffing and supportive work environments as essential emergency infrastructure. As climate projections indicate that dangerous heat events will become more common in the coming decades, hospitals that invest now in their nursing workforce, in both numbers and working conditions, may find themselves measurably better equipped to protect their patients when the next heat wave arrives. The editorial, titled How Nursing Can Strengthen Hospital Preparedness for Extreme Heat, was published in Public Health Nursing in September 2026 and represents a call to action for health system leaders, educators, researchers, and policymakers alike to place the nursing workforce at the center of climate resilience planning.

Subject of Research: The role of hospital nurse staffing and work environments in extreme heat emergency preparedness

Article Title: New editorial calls for investing in hospital nursing workforce to address health impacts of extreme heat

Article References: New editorial calls for investing in hospital nursing workforce to address health impacts of extreme heat. (n.d.). Original publication

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Keywords: extreme heat, nurse staffing, hospital preparedness, Public Health Nursing, climate resilience, heat-related illness, emergency department, patient outcomes, nursing workforce, health policy, University of Pennsylvania, heat wave