19.4 Bariatric Transport Considerations

The aircraft does not care that the receiving surgeon is ready if the aircraft cannot legally lift. Domain 5.D of the August 2026 Board of Certification for Emergency Nursing (BCEN) Certified Flight Registered Nurse (CFRN) outline added bariatric transport considerations as its own leaf because a survivable patient can still be an unsurvivable mission. This section is operational, not a repeat of the airway and drug math in 19.3.

Weight-and-balance is a medical decision

Weight-and-balance is how the pilot in command (PIC) decides whether the airframe can take off, hover, and land. You own the numbers the PIC cannot see from the seat: stated patient weight, last measured weight, stretcher type, extra crew, extra oxygen, a family rider, and the monitor-ventilator-pump stack.

A helicopter emergency medical services (HEMS) ship has a maximum gross weight and a center of gravity (CG) envelope. Adding 180 kilograms of patient plus a bariatric litter plus a third clinician can put you outside both. Floor loading is separate from total weight: a small-footprint load can exceed the cabin floor limit even when the aircraft is under gross. Say the number out loud. Do not guess 250 pounds because the sending nurse shrugged.

Hot, high, and heavy is the performance trap. Density altitude rises with heat and elevation. The same aircraft that lifted this patient at dawn at sea level may not hover at 1600 local at a mountain pad. Legal weather is still a no-go if the hover chart is gone.

If the aircraft cannot legally lift, you do not launch. That is not a negotiation with a surgeon on the phone. Arrange a backup ground critical-care unit, a larger airframe, or a delay until density altitude falls. Document the reason.

Stretchers, doors, and extra hands

A standard rotor litter is built for a typical adult, not for hip width, pannus, or a 450-kilogram rating. Bariatric stretchers are wider, sit higher, and have higher working-load limits. Confirm:

• The stretcher's rated capacity exceeds the patient plus devices.
• The door geometry — width, height, and sill — will accept that stretcher at the sending door, the aircraft door, and the receiving pad.
• You can still reach the airway, the right arm, and the ventilator once the wider mattress is in.

Extra crew is a weight cost and a safety tool. A third clinician may be required to move, ramp, and suction. That person still has to sit in a legal seat with a restraint. Standing in the cabin for takeoff is not a plan.

Plan longer scene times. Packaging, ramping, extra straps, and a second door attempt are expected. Brief the PIC. Rushing is how crews drop a patient or injure a back.

Securing the body you actually have

Restraints that fit a 70-kilogram trauma patient will cut or slip.

• Use extra wide straps across the chest, pelvis, and thighs — not a single belt on a soft abdomen.
• Secure the pannus so it cannot shift in turbulence or roll onto the airway and the inferior vena cava (IVC).
• Secure limbs independently. A heavy arm that falls off the mattress is a shoulder injury and a lost intravenous (IV) line.
• Pad every strap edge. Skin shear on a sliding transfer is a transport injury. Lift with enough people; do not drag across a cargo sill.

Dignity is operational. Keep the patient covered, close doors, and brief before you tilt. Extra hands do not narrate body size on the radio.

Airway in a cabin that does not ramp itself

You still owe the HELP alignment from 19.3. A narrow cabin makes that harder, not optional. Build the ramp before you close the door. Confirm you can still open the airway kit and swing a video laryngoscope. If the only way to ramp is to sit the patient up against a bulkhead you cannot reach, you have the wrong aircraft or the wrong package.

Hoist operations are almost never the answer. A bariatric patient on a hoist is a winch, spin, and drop problem. Use a ramp, a larger door, or ground transport. Do not invent a hoist because the landing zone is pretty.

Destination that can actually receive

Table, gantry, and lifts

A trauma center that cannot get the patient into the computed tomography (CT) gantry or onto the operating room (OR) table is not a destination. Ask before you lift:

Call the receiving charge nurse, not only the accepting physician. Physicians accept physiology. Charge nurses know whether the scanner will fit.

CAMTS, go/no-go, and the backup

The Commission on Accreditation of Medical Transport Systems (CAMTS) publishes accreditation standards many programs use for bariatric policies and specialty equipment. CAMTS is industry context, not federal aviation law. Your Federal Aviation Administration (FAA) certificate, the flight manual, and the PIC's performance calculation make a launch legal.

Go/no-go when the aircraft cannot lift:

1. State the weight, the airframe limit, and the density-altitude problem out loud.
2. Decline the rotor if the numbers fail.
3. Activate the backup ground unit or request a larger aircraft.
4. Keep treating on the scene or at the sending hospital until the legal vehicle arrives.

A later ground arrival is a save. A helicopter that cannot hover is not.

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