The Invisible Killer

By: Melody Dizon

 

Aby-product of incomplete burning of coal, wood, charcoal, natural gas, fuel oil, kerosene, gasoline, fabrics and plastics, CARBON MONOXIDE or CO is the leading cause of poisoning deaths in the United States. It is called the “Invisible Killer” because it’s a colorless, odorless, poisonous gas that is somewhat lighter than air. More than 150 people in the Unites States die every year from accidental non-fire related CO poisoning associated with consumer products, including generators. Other products include faulty, improperly-used or incorrectly-vented fuel-burning appliances such as furnaces, stoves, water heaters and fireplaces.

So How Does the New Carbon Monoxide Law Affect Me?

Effective January 1, 2007, every Illinois home is required to have at least one carbon monoxide alarm in an operating condition within 15-feet of every room used for sleeping purposes. Homes that do not rely on the burning of fuel for heat, ventilation or hot water; are not connected to a garage; and are not near a source of carbon monoxide (as determined by the local building commissioner) are not required to install carbon monoxide detectors. (Public Act 94-741)

And How Are People Exposed to CO?

Because the burning of fossil fuels and fossil fuel products is so widespread, CO is a common air pollutant, particularly in urban areas. Elevated levels in cities are caused by the concentration of traffic, industry and heating needs. Indoors, elevated CO levels can be traced to gas appliances, tobacco smoke, or poorly vented or unvented combustion sources.

Per Illinois Department of Public Health there are four main sources of CO in the environment:

• Automobile exhaust combined with inadequate ventilation is responsible for two-thirds of all accidental CO deaths. Lethal levels of the gas can occur in as little as 10 minutes in a closed garage. People in certain occupations– including highway workers, traffic officers, tunnel workers, professional drivers, toll booth attendants and warehouse workers–are exposed regularly to high levels of the CO. Indoor events, such as tractor pulls, car and truck exhibitions, or ice hockey or skating, can expose spectators and participants to elevated CO levels if these areas are not adequately ventilated.

• Faulty heating equipment accounts for nearly one-third of accidental CO fatalities. Culprits can include your home heating system, but also improperly vented or unvented gas appliances, kerosene or propane space heaters, charcoal grills or hibachis, and Sterno-type fuels.

• Fires can raise CO levels in the blood of unprotected persons to 150 times normal in one minute; CO poisoning is the most frequent cause of immediate death associated with fire. Smoke given off by cigarettes also can cause elevated CO levels in both the smoker and nonsmokers who are exposed to the smoke.

• Methylene chloride, a solvent in some paints and varnish strippers, is absorbed by the body and changed to CO. Using products that contain methylene chloride for more than a few hours can raise CO levels in the blood seven to 25 times normal. People with pre-existing cardiac conditions who use these products in unventilated spaces risk heart attack and death.

Carbon Monoxide Explained

Tell Me, Why Is CO Dangerous?

CO interferes with the blood’s ability to carry oxygen. Blood carries oxygen to body tissues by combining the oxygen with hemoglobin, a substance found in red blood cells. CO, however, combines with hemoglobin 250 times better than oxygen does, thereby denying body tissues a sufficient supply of oxygen (a condition called hypoxia). Organs with the highest demand for oxygen–the brain and the heart–are most sensitive to CO poisoning.

Infants in particular are more susceptible to CO poisoning because their hemoglobin binds with carbon monoxide better than adult hemoglobin does. This means that the unborn or newborns may suffer more serious effects than adults, even at the same levels of exposure.

What Should I Be Looking For As the Symptoms of CO Poisoning?

At low levels, CO exposure causes no obvious symptoms, although people exposed to low CO levels may experience decreased exercise tolerance and shortness of breath during exertion. Tightness across the forehead, flushed skin and slightly impaired motor skills also may occur. The first and most obvious symptom is usually a headache with throbbing temples.

Symptoms of mild to moderate CO poisoning may resemble winter flu or gastroenteritis, particularly in children, and include:

• nausea,

• lethargy

• malaise.

As the CO level or exposure time increases, symptoms become more severe and additional ones appear:

• irritability

• chest pain,

• fatigue

• diminished judgment

• dizziness

• dimness of vision Higher levels cause

• fainting upon exertion

• marked confusion

• collapse If exposure continues

• coma • convulsion

• death from respiratory arrest can result.

When unexplained symptoms persist and affect more than one person in a home or workplace where a source of combustion is present, CO poisoning should be considered. This is especially true during heating season.

Are There Any Long-Term Effects?

CO poisoning survivors may continue to suffer both severe and subtle neurological effects. Up to 40 percent of those who experience serious, nonfatal CO poisoning develop such symptoms as apathy, mutism, amnesia, loss of bladder control, headache, irritability, personality changes, confusion, memory loss, motor impairment and vision changes. These symptoms most often appear within two to four weeks after exposure, even after apparent recovery. Up to 75 percent of those with delayed effects recover within a year, but sometimes not fully. Some effects, such as memory loss and motor impairment, may be permanent.

How Can CO Poisoning Treated?

The first rule in any CO exposure is to remove those exposed from the affected area and to eliminate the CO source. In mild cases, symptoms disappear on their own or with the use of supplied oxygen. More severe poisoning requires supportive care for the acute symptoms, including 100 percent oxygen, respiratory support, intravenous fluids and heart monitoring.

How Can You Tell If You Are Being Exposed to CO?

The local gas company, fire department or health department may be able to help you have the air in your home or workplace tested. CO monitors also are available for home use. Place detectors in areas where your family spends most of its time– family room, bedroom or kitchen–but far enough away from obvious and predictable sources of CO, such as a gas stove, to avoid false alarms. A hardware store, safety supply outlet, gas company, fire department or health department can provide more information about these devices.

Can I Avoid CO Poisoning in My Home?

CO poisoning is entirely preventable, if you follow a few simple steps:

• Have your gas appliances checked periodically for proper operation and venting.

• Make sure flues, chimneys and vents are clear of debris and in good working order. Have your home heating systems (including chimneys and vents) inspected and serviced annually by a trained service technician.

• Never use portable generators inside homes or garages, even if doors and windows are open. Use generators outside only, far away from the home.

• Install battery-operated CO alarms or CO alarms with battery backup in your home outside separate sleeping areas. Check them regularly and make sure they are maintained properly. Change batteries every 6 months or when we switch our clocks.

• Do not use unvented space heaters, gas stoves, charcoal grills or Sterno-type fuels as sources of heat. Do not cook on charcoal grills indoors. Do not barbeque in the garage.

• Never use a gas range or oven for heating.

• Open the fireplace damper before lighting a fire and keep it open until the ashes are cool. An open damper may help prevent build-up of poisonous gases inside the home.

• In the workplace, make sure there is sufficient ventilation when working around CO sources, such as propane-powered forklifts and space heaters. Where exposure is unavoidable, workers should wear CO monitoring badges. Employers should regularly monitor the workplace.

• Check the exhaust system of your car regularly and keep it in good condition. Do not run the car or other gasoline-powered engines in a garage, even with the doors open. Crack car windows when driving.

• Use paint strippers that do not contain methylene chloride. If you do use solvents containing this substance, make sure the area is properly ventilated.

• Know the symptoms of carbon monoxide poisoning: headache, dizziness, weakness, nausea, vomiting, sleepiness, and confusion.

If you suspect CO poisoning, get outside to fresh air immediately, and then call 911 If you suspect CO exposure or poisoning, call emergency personnel and leave the area immediately. Then notify the gas company or the health department. Affected individuals should be led to fresh air and provided with oxygen, if necessary. Follow standard first aid practices: Keep victims warm and quiet until help arrives.

Folks, these are yet life-saving measures that are vital to our daily life and healthy living. Gathering and collecting these old and current data may not be news to some but hearing it over and over again, repeating it over and over again may one day pay its dues. As we are all creatures of habit, I for one, needs to be reminded with all of these. It cannot hurt, it cannot be too redundant because each life matters. Your health matters. I am your Unchained Melody, your health advocate, Manigong Bagong Taon po sa ating lahat!!!

Sources: WebMd, Centers for Disease Control, Illinois Department of Public Health##