Keeping medical devices running during long city blackouts

Keeping medical devices powered during extended citywide blackouts

A prolonged city blackout can become a medical emergency for anyone who depends on a CPAP, BiPAP, oxygen concentrator, nebulizer, suction machine, home dialysis equipment, powered wheelchair, or refrigerated medication. The FDA recommends creating a device-specific outage plan with your healthcare professional, equipment supplier, and manufacturer before an emergency occurs. (U.S. Food and Drug Administration)

How to keep a CPAP running during an outage

The safest approach is to maintain at least two independent backup-power options.

1. Use a compatible CPAP battery or UPS

A manufacturer-approved battery can remain charged and ready to take over when utility power fails. Some CPAP battery systems operate as an uninterruptible power supply, reducing or eliminating the interruption when the outlet loses power. Battery runtime depends on the machine, pressure setting, battery capacity, humidification and heated-tubing use. (Philips USA)

Before an outage:

• Confirm the exact battery and cable required for your CPAP model.

• Fully charge the battery and test it overnight.

• Label every cable so it can be connected in darkness.

• Replace batteries that no longer hold their expected charge.

• Keep the device settings, model number, prescription and supplier telephone number with your emergency supplies.

Do not assume that any universal DC cord will work. Manufacturers warn that an incompatible cable or power arrangement can damage the machine. (Philips Documents)

2. Consider a portable battery power station

A portable power station may operate a CPAP through its AC receptacle, provided that its voltage, output and waveform meet the CPAP manufacturer’s requirements. Confirm compatibility before purchasing or connecting one; consumer power stations are not automatically approved for every medical device.

When comparing systems, look at watt-hours rather than only watts. Watts tell you what the station can operate at one time; watt-hours help estimate how long it may operate. Actual runtime will be lower than the advertised battery capacity because of conversion losses and the CPAP’s changing power demand.

3. Reduce optional power consumption

Heated humidifiers and heated tubing can consume a substantial portion of a CPAP battery’s available energy. ResMed advises turning off humidification when using an external battery to maximize runtime, but follow the instructions for your particular machine and discuss significant therapy changes with your clinician. (ResMed Document Center)

Do not change prescribed pressure settings simply to save electricity.

4. Have an evacuation and recharging plan

Identify places that may retain backup power, such as a designated emergency shelter, hospital, fire station, community resilience center, hotel or relative’s home. Ask beforehand whether the location can accommodate your medical equipment.

The FDA also recommends notifying your electric utility and local emergency services that someone in the household uses electricity-dependent medical equipment. However, you should still maintain your own backup plan rather than depending entirely on priority restoration. (U.S. Food and Drug Administration)

5. Use generators safely

Operate a fuel-powered generator outside and at least 20 feet from windows, doors and vents. Never place one in a house, garage, basement, carport or other enclosed or partially enclosed area. Use working battery-powered carbon-monoxide detectors. (CDC)

Plug approved equipment directly into the generator or use properly rated cords according to the generator and medical-device instructions. Never plug a generator into a wall receptacle; this dangerous practice can energize utility lines and cause electrocution or fire. (American Red Cross)

Why fill a bathtub with water?

A blackout can interrupt municipal pumping stations, private well pumps or building water-pressure systems. Filling a clean bathtub before a predicted storm provides water for:

• Flushing toilets

• Washing hands or clothing

• Basic cleaning

• Limited bathing and sanitation

FEMA specifically recommends bathtub water for sanitation and warns that it generally should not be treated as drinking water. Bathtubs, drains, cleaning residues and uncovered storage make contamination possible. Store drinking water separately in clean, food-grade containers. (FEMA)

When a severe storm or flood is expected, fill the tub before conditions deteriorate. Do not use bathtub water that has been exposed to sewage backup, floodwater or chemical contamination.

Which outlets can power essential medical equipment?

In a private home

During an ordinary utility failure, a standard wall receptacle has no electricity. A medical device must instead be connected to:

• Its compatible internal or external battery

• A compatible UPS

• A suitable portable battery station

• A generator receptacle

• A professionally installed standby-generator circuit with a transfer switch

A GFCI outlet—the type commonly found in bathrooms and kitchens—is not automatically a backup outlet. It protects against electrical shock but normally loses power with every other receptacle on the affected utility circuit.

Never assume that a wall outlet remains safe after flooding. The FDA advises checking the device, cord and surrounding area for water before connecting medical equipment. (U.S. Food and Drug Administration)

In a hospital or healthcare facility

Emergency-powered receptacles are identified by a distinctive color or marking; they are commonly red, although the marking can vary by facility. Only selected receptacles may be connected to the facility’s essential electrical system. Ask a nurse, respiratory therapist or facilities employee before moving or connecting equipment. (Centers for Medicare & Medicaid Services)

Do not disconnect hospital equipment or move plugs between receptacles without staff authorization.

What should be unplugged during a blackout?

Disconnect nonessential appliances and electronics to prevent damage from voltage spikes and to reduce the load when service returns. Ready.gov recommends turning off or disconnecting equipment because power may return with momentary surges. (Ready.gov)

Priority items include:

• Televisions, computers, gaming systems and unprotected electronics

• Air conditioners, space heaters and portable heating equipment

• Electric stoves, ovens, microwaves, toasters and countertop cookers

• Washers, dryers and dishwashers

• Power tools, hair dryers, irons and other high-wattage devices

• Any appliance that was operating when the outage began

Leave one lamp switched on so you will know when electricity returns. Restore appliances gradually rather than turning everything on simultaneously. (American Red Cross)

Keep refrigerator and freezer doors closed. An unopened refrigerator generally maintains a safe temperature for approximately four hours, while a full freezer may remain cold for about 48 hours—about 24 hours when half full. (U.S. Food and Drug Administration)

Medical-blackout readiness checklist

Keep these items together in an accessible container:

• Fully charged device battery or UPS

• Correct AC and DC power cables

• Second backup-power source

• Spare mask, tubing, filters and other consumables

• Written device settings and operating instructions

• Doctor, supplier and manufacturer contact information

• Paper medication and medical-device list

• Battery-powered carbon-monoxide detector

• Flashlights rather than candles

• A planned location to relocate if backup power runs low

Test the complete setup under controlled conditions before hurricane season or another high-risk period. A battery that has never been connected to the actual medical device is not yet a reliable emergency plan.

For a device that is life-sustaining—or when loss of treatment could create immediate danger—develop the plan directly with the prescribing clinician and equipment supplier. When adequate backup power cannot be maintained, relocate to a powered medical facility or emergency shelter rather than experimenting with unapproved cords, adapters or generators.

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