Sleep is where your body repairs itself. Without it, healing slows.
In the relentless hum of intensive care units — where light never dims and machines never quiet — sleep has long been an unintended casualty of survival medicine. UC San Diego Health is now leading a $12 million, five-year national study across eight hospitals to ask a question both simple and overdue: which strategies can genuinely restore rest to critically ill patients, and which can endure the pressures of real-world care? Funded by the Patient-Centered Outcomes Research Institute, the work recognizes that healing is not only a matter of intervention, but of the body's oldest restorative rhythm.
- ICU patients routinely lose sleep to the very environment designed to save them — constant light, noise, and interruptions make rest nearly impossible during some of the most physically demanding moments of a person's life.
- Sleep deprivation in intensive care is not merely uncomfortable; it accelerates delirium, slows healing, extends hospital stays, and can leave patients with lasting cognitive damage long after discharge.
- Despite decades of awareness, most ICUs have never systematically tested which sleep interventions actually work — or whether they can survive the staffing pressures and unpredictability of round-the-clock critical care.
- Led by pulmonologist Biren Kamdar, the study will test sleep-promotion strategies across eight hospitals with diverse patient populations, cultures, and resource realities, seeking solutions that hold up outside controlled conditions.
- If the five-year effort yields actionable protocols, it could move sleep from an overlooked afterthought to a protected pillar of critical care — reshaping ICU practice nationwide and improving long-term recovery for the most vulnerable patients.
Intensive care units are engineered for survival — but almost incidentally hostile to sleep. Machines beep through the night, lights stay on, and nurses enter every few hours to check vitals or draw blood. For patients recovering from surgery or trauma, this environment is necessary. It is also, for many, one of the most distressing experiences they will report after discharge.
UC San Diego Health is now launching a five-year, $12 million study to confront that reality directly. Funded by the Patient-Centered Outcomes Research Institute and spanning eight hospitals nationwide, the research centers on a deceptively straightforward question: which sleep-promotion strategies actually work in ICUs, and which can hospitals realistically sustain?
The stakes are well established. When critically ill patients cannot sleep, their bodies heal more slowly, delirium becomes more likely, and hospital stays grow longer. Delirium in particular carries serious consequences — not just confusion in the moment, but lasting cognitive impairment that can follow patients home and require months of rehabilitation. Sleep is a known protective factor, yet most ICUs have never systematically tested how to preserve it.
Pulmonologist and critical care physician Biren Kamdar will lead the study, working alongside patients, families, and clinicians at each site. The eight-hospital network is central to the design: by testing approaches across different populations, hospital cultures, and resource constraints, researchers can identify what translates from theory into sustainable practice — a distinction that has historically caused promising interventions to stall.
The five-year commitment signals the depth of the undertaking. By its conclusion, the study aims to produce concrete, implementable evidence that could reshape ICU protocols nationwide — making sleep not an afterthought, but a recognized and protected component of critical care.
Intensive care units are built for survival, not sleep. Machines beep through the night. Lights stay on. Nurses move in and out every few hours to check vitals, adjust medications, draw blood. For patients fighting for their lives after surgery or trauma, the ICU is essential. It is also, almost by design, a place where sleep becomes nearly impossible.
UC San Diego Health is now launching a five-year study to change that. The research, funded with $12 million from the Patient-Centered Outcomes Research Institute, will unfold across eight hospitals nationwide and focus on a simple but urgent question: which strategies actually help ICU patients sleep, and which ones can hospitals realistically sustain?
The problem is well documented. Sleep disruption in intensive care is one of the most common complaints patients report after discharge—and one of the most distressing. When critically ill people cannot sleep, the consequences ripple outward. Their bodies heal more slowly. Delirium—a state of confusion and disorientation—becomes more likely. Hospital stays stretch longer. Recovery becomes harder. Yet despite knowing this, most ICUs have not systematically tested which interventions work best or how to make them stick in the chaos of round-the-clock critical care.
Biren Kamdar, a pulmonologist and critical care physician at UC San Diego Health, will lead the research as principal investigator. His team will work with patients, families, and clinicians at each site to identify sleep-promotion strategies that are not just effective in theory but workable in practice. The distinction matters. A strategy that works in a controlled research setting might collapse under the pressure of a real ICU where staffing is tight, emergencies interrupt plans, and every patient's needs are different.
The eight-hospital network gives the study real-world reach. Rather than testing ideas in isolation, researchers will see how different approaches perform across different patient populations, different hospital cultures, and different resource constraints. That's where the translation happens—where research becomes something a hospital can actually implement and sustain.
Delirium is particularly important here. It is not just confusion. It is a serious complication that can leave patients with lasting cognitive problems, even after they leave the hospital. Anything that reduces its incidence—and sleep is a known protective factor—has the potential to change outcomes significantly. For patients recovering from critical illness, the difference between sleeping and not sleeping can be the difference between going home and facing months of cognitive rehabilitation.
The five-year timeline reflects the scope of the work. This is not a quick pilot. It is a commitment to understanding sleep in ICUs deeply enough to reshape how hospitals approach it. By the end, researchers should have concrete evidence about which strategies work, why they work, and how to implement them in ways that actually stick. That evidence could reshape ICU protocols nationwide, moving sleep from an afterthought to a core part of critical care. For patients, families, and the clinicians caring for them, that shift could mean the difference between recovery and prolonged suffering.
Notable Quotes
Sleep is something all of us need, but it is one of the most common and distressing experiences reported by patients in hospitals nationwide.— Biren Kamdar, MD, MHS, pulmonologist and critical care physician at UC San Diego Health
The Hearth Conversation Another angle on the story
Why is sleep in an ICU so much harder than sleep anywhere else?
It's the environment itself. Machines alarming constantly, lights on all night, staff checking on you every couple hours. But it's also the illness—pain, anxiety, medications that interfere with sleep cycles. The ICU is designed to keep you alive, not to let you rest.
And that matters for recovery?
Enormously. Sleep is when your body repairs itself. Without it, healing slows down. Your immune system weakens. And delirium becomes much more likely—that confusion and disorientation that can leave lasting damage even after you leave the hospital.
So why hasn't this been solved already?
Because nobody has systematically tested which solutions actually work in real ICUs, with real constraints. You can promote sleep in a controlled study, but can a busy hospital actually do it every day? That's what this research is trying to answer.
Eight hospitals seems like a lot of coordination.
It is. But that's the point. You need to see if something works across different hospitals, different patient populations, different staffing levels. If it only works in one place, it's not useful.
What happens if they find something that works?
Then hospitals can change their protocols. Make sleep a priority in ICU design and practice. For patients, that could mean going home instead of facing months of cognitive rehabilitation.