What Is an Incubator in the Hospital for Adults?

Hospitals do not have a device literally called an “adult incubator,” but several technologies serve the same fundamental purpose for grown patients: precisely controlling temperature, humidity, airflow, or atmospheric pressure around a person who cannot regulate these conditions on their own. A neonatal incubator is essentially a small, sealed, climate-controlled box. For adults, that concept gets broken into specialized equipment, from forced-air warming blankets used in nearly every operating room to air-fluidized beds for burn patients, hyperbaric oxygen chambers for wound healing, cooling systems for cardiac arrest survivors, and negative-pressure isolation pods for infectious disease. Each targets a different clinical problem, but they share the core logic of surrounding a patient with a carefully managed micro-environment.

Why Adults Need Environmental Control in the First Place

A healthy adult’s body does a remarkable job of holding its core temperature near 37 °C. But that ability breaks down in specific situations. General anesthesia suppresses the body’s thermoregulatory reflexes, and a patient lying unconscious in a cold operating room with an open surgical site can lose heat fast. This is called perioperative hypothermia, and it is not trivial. Even a small temperature drop during surgery increases the risk of blood-clotting problems, surgical site infections, heavier bleeding, and slower drug metabolism, all of which can delay recovery.¹ After cardiac surgery specifically, hypothermia on arrival in the ICU has been linked to cardiovascular events, coagulopathy, and wound complications.²

Burn patients face a different version of the same problem. Large burns destroy the skin’s barrier function, causing massive evaporative water and heat loss. Patients with burns covering more than about a fifth of their body surface area become hypermetabolic, meaning their bodies burn through energy at an accelerated rate, and cold ambient temperatures amplify the fluid loss, infection risk, and discomfort.³ For these patients, the room itself becomes a kind of incubator: burn ICUs keep ambient temperatures unusually high, and specialized beds add an extra layer of microclimate control.

Then there are patients whose problem is not heat loss but brain injury. After cardiac arrest, deliberate cooling can protect the brain from the cascade of damage that follows oxygen deprivation. In each of these scenarios, the hospital deploys a different piece of equipment, but the underlying principle is the same one a neonatal incubator follows: the patient cannot maintain the right conditions alone, so the technology does it for them.

Forced-Air Warming Systems

The closest thing to an everyday adult incubator is the forced-air warming device. If you have ever had surgery, you may remember a puffy blanket draped over your body that seemed to breathe warm air. That is a forced-air warmer, and it is the most widely used active warming method in operating rooms worldwide. A blower unit pushes heated air through a disposable blanket with tiny perforations, creating a warm-air envelope around the patient.

Different blanket designs cover different body regions. Underbody blankets sit beneath the patient; upper-body blankets drape over the chest and arms. Research comparing configurations suggests that underbody blankets may be slightly more efficient at preventing hypothermia during surgery.⁴ A multi-center study testing several forced-air systems found that all kept patients’ mean core temperatures above 36 °C during surgery, though some designs outperformed others.⁵

Self-warming blankets, a newer alternative, use exothermic chemical reactions rather than a powered blower. A meta-analysis of eight studies found that self-warming blankets actually maintained slightly higher core temperatures at two and three hours after anesthesia compared with forced-air devices, though the overall rate of hypothermia was statistically similar between the two.⁶ In practice, forced-air warmers remain dominant simply because they are familiar, widely available, and inexpensive per use.

Air-Fluidized Beds for Burns and Pressure Injuries

For burn patients and people with severe pressure ulcers, the “incubator” is an entire bed. Air-fluidized therapy beds contain tiny ceramic or glass microspheres that are suspended by a continuous flow of warm, filtered air pumped from below. The effect is something like a warm, dry pool: the patient floats on the surface with pressure distributed so evenly that almost no single point of the body bears a concentrated load. Friction and shear are dramatically reduced, which matters enormously when you have raw, damaged skin that cannot tolerate the forces of a standard mattress.

Air-fluidized therapy has been used since the late 1960s. The variable-temperature airflow allows clinicians to control the microclimate around the patient’s body for both therapy and comfort. Clinical benefits documented over the decades include faster and more cost-effective healing of pressure ulcers, fewer hospitalizations for long-term care patients, and decreased mortality in patients with extensive burns and inhalation injuries.⁷ In the burn ICU, these beds work alongside elevated room temperatures to create a continuously warm, low-pressure environment around a patient who has lost much of their skin’s protective and thermoregulatory function.

Hyperbaric Oxygen Chambers

A hyperbaric oxygen chamber is perhaps the most visually “incubator-like” adult hospital device: a sealed, transparent tube or room in which the patient breathes pure oxygen at pressures higher than normal atmospheric pressure. The elevated pressure forces more oxygen into the blood and tissues, which supports healing in wounds that are not responding to standard treatment.

The approved medical uses are wide-ranging. Hyperbaric oxygen therapy has been applied to non-healing wounds like diabetic foot ulcers, infected wounds including gas gangrene and necrotizing soft tissue infections, crush injuries, compromised skin grafts, thermal burns, and radiation-induced tissue damage such as osteoradionecrosis of the jaw.⁸ In a small randomized trial of patients with chronic diabetic foot ulcers that had failed a month of standard care, about a third of those who received hyperbaric sessions achieved complete wound closure, compared with none in the control group.⁹ Case reports have also noted potential psychological benefits, including improvements in anxiety and mood, which makes sense if you consider that chronic wound patients often experience considerable emotional distress.¹⁰

Sessions typically last about 90 minutes, and a course of treatment can involve 20 to 40 sessions depending on the condition. The chambers come in two main forms: monoplace units that hold one person lying down (the classic “tube” image) and multiplace rooms that can treat several patients at once while a technician accompanies them inside. Either way, the patient is sealed inside a controlled-atmosphere enclosure, breathing air at conditions their body could not produce on its own. That is an incubator in everything but name.

Targeted Temperature Management After Cardiac Arrest

Sometimes the goal is not warming but deliberate cooling. After a cardiac arrest, when the heart stops and the brain goes without oxygen, the hours that follow pose a serious risk of secondary brain damage from inflammation and metabolic disruption. Targeted temperature management involves lowering a patient’s core temperature to a precise target and holding it there for a set period, then rewarming gradually. The idea is to slow the destructive biochemical cascades that occur after the brain is re-oxygenated.

This is a complex intervention with significant variability in how hospitals carry it out. Devices, target temperatures, cooling duration, rewarming speed, sedation protocols, and management of fever after rewarming all differ from center to center.¹¹ The cooling devices themselves range from surface systems like gel-pad wraps and forced-air units (repurposed from their warming role) to endovascular catheters that circulate cooled saline through a catheter placed in a large vein.

A prospective study comparing four cooling technologies in cardiac arrest patients found large differences in performance. Endovascular cooling achieved the fastest cooling rate, at roughly 2 °C per hour, and held the target temperature most precisely, staying within half a degree of target about 97% of the time. Surface-based devices were slower and less precise, with one gel-pad system staying in range only about 57% of the time.¹² For a patient wrapped in cooling pads with sensors monitoring their temperature around the clock, the setup functions like a reverse incubator: the environment is tightly regulated, but the target is cold rather than warm.

Isolation Pods and Negative-Pressure Enclosures

Not every adult “incubator” is about temperature. Some are about containment. When a patient has, or is suspected of having, a highly transmissible and dangerous respiratory infection, hospitals can place them inside negative-pressure isolation enclosures. These range from entire rooms engineered with directional airflow to portable pods that wrap around a single patient on a stretcher.

One design is a negative-pressure isolation hood made of flexible transparent PVC, supported by an inflatable column structure and fitted with an electric exhaust system. The exhaust maintains negative pressure inside the hood so that air flows inward rather than leaking outward, and a high-efficiency filter captures more than 99.99% of particles down to 0.3 micrometers before exhausting the air.¹³ During the Ebola outbreak in West Africa, health workers with suspected infection were evacuated by air inside a stretcher-mounted negative-pressure pod called the HSTI, which allowed safe transport without exposing the flight crew.¹⁴

The mirror image of this concept applies to patients who are immunocompromised rather than infectious. Bone marrow transplant units, for instance, use positive-pressure ventilation combined with high-efficiency particulate air filtration and sealed rooms to keep airborne pathogens away from patients whose immune systems are essentially absent.¹⁵ In one case the enclosure keeps dangerous things in; in the other, it keeps dangerous things out. Both are functionally incubators for an adult who cannot safely share the ambient environment.

Metabolic Chambers in Research Settings

One more sealed enclosure worth mentioning lives mostly in research hospitals rather than regular patient care. Whole-room indirect calorimeters, sometimes called metabolic chambers, are small sealed rooms about the size of a studio apartment. A person lives inside for 24 hours or more while sensors track every molecule of oxygen consumed and carbon dioxide produced, along with temperature, humidity, and movement. These chambers have been used for more than a century to study human metabolism, energy expenditure, and how the body uses nutrients.¹⁶

You are unlikely to encounter one as a regular hospital patient, but they do exist at academic medical centers and sometimes appear in clinical studies on obesity, diabetes, or nutritional interventions. Reproducibility across different chambers has been validated, meaning results from one facility can reasonably be compared to results from another.¹⁷ The concept is the same: put a person in a controlled enclosure and manage the environment precisely so you can measure, treat, or protect them in ways that open air does not allow.

Safety Concerns With Warming Devices

Because forced-air warmers are so common, they have attracted scrutiny about unintended effects. The primary worry is that the warm airstream may disturb laminar airflow in operating rooms, the carefully designed downward current of filtered air that keeps the surgical site clean. If the warming blanket redirects air currents, it could theoretically carry airborne particles toward the wound.¹⁸

The evidence on this is mixed and contested. Some studies have reported that switching from forced-air warming to conductive warming (resistive heating pads placed directly against the patient’s skin) was associated with lower surgical site infection rates in joint replacement surgery, with one observational dataset reporting a drop from about 3% to less than 1%. On the other hand, multiple studies measuring bacterial counts at various locations in operating rooms found no significant difference between warming device types. A large analysis using nationwide South Korean data on posterior spinal fusion surgeries did find higher infection rates among patients warmed with forced-air devices compared to conductive systems, and the authors recommended conductive warming for that specific surgery type.¹⁹ The debate continues, and most hospitals still use forced-air systems as their default. But if you are having a surgery where the wound is particularly vulnerable to airborne contamination, it is reasonable to ask your surgical team what warming method they plan to use.

What Aggressive Warming Costs

Hospital administrators weigh the clinical benefits of warming against its costs. A study of patients undergoing major abdominal surgery compared aggressive warming protocols (prewarming plus continuous intraoperative forced-air warming) with routine warming. The aggressive approach did not change the overall complication rate or total hospitalization costs, but it did reduce the time patients spent on a ventilator after surgery and lowered the rate of prolonged intubation. The net cost of the aggressive protocol per operation was higher, roughly $138 compared with $72 for routine warming. However, the analysis found that aggressive warming breaks even financially when operating-room staff costs exceed about $2.37 per minute per person or when the disposable warming blanket costs less than roughly $13 per unit.²⁰ In hospitals with expensive labor and high surgical volume, in other words, investing more in warming pays for itself through shorter recovery and faster operating-room turnover.

How These Differ From a Neonatal Incubator

People encounter the word “incubator” in a hospital and almost always picture the clear plastic enclosures in a neonatal intensive care unit. Those devices combine temperature control, humidity regulation, and a physical barrier into one compact unit because a premature baby needs all of those functions simultaneously and continuously. The incubator’s own fan, for instance, generates an internal noise level of about 40.5 decibels even when no external sounds are present, which has prompted research into how that constant hum affects infant development.²¹

For adults, the same functions get distributed across specialized equipment because adults are bigger, their clinical needs are more varied, and an enclosed box large enough to hold an adult while allowing medical access would be impractical for most situations. A forced-air blanket handles temperature. An air-fluidized bed handles pressure and microclimate. A hyperbaric chamber handles atmospheric pressure and oxygen concentration. An isolation pod handles airflow direction and filtration. Each is a fragment of what a neonatal incubator does in one device, scaled up and refined for a specific adult problem. When someone asks whether adults ever use incubators, the honest answer is that they use them all the time, just not as a single box with that name on it.