We've all heard of an invisible enemy, right? Sometimes this enemy can be right inside our homes, but we don't know it. Today we're going to talk about one such dangerous, but odorless, colorless silent killer - Carbon Monoxide poisoning. This can be life-threatening, so it's very important to be aware of it.
What is carbon monoxide? Why is it dangerous?
Simply put, carbon monoxide is a gas. But it has a special feature. This gas has no color, no smell, and no taste . That means our five senses cannot detect it. This is the most dangerous thing.
Carbon monoxide (CO) is produced when fuels such as gasoline, kerosene, wood, and coal do not burn properly, that is, during incomplete combustion. If this gas enters our bodies in high concentrations, it can even cause death within minutes. If you suspect you have been poisoned by CO, you should call emergency services immediately .
Where does this carbon monoxide (CO) come from?
As we said before, this `CO` is formed when fuel is burned. Look at how much of this is around us:
- From vehicle engines like cars and trucks. (Look at the smoke from old vehicles!)
- Small gasoline engines (e.g. generators, lawn mowers)
- Fuel-burning space heaters (not electric heaters)
- From gas stoves or ovens
- From barbecue grills
- Lanterns (especially kerosene lamps)
- Heating systems, home furnaces (these are rare in our country, but may be available in some places)
- From things that burn coal, kerosene, propane gas, or wood. For example, some people heat coal indoors to keep mosquitoes away or to keep warm in the cold. These can release CO.
The most important thing is that if these devices are not used in a well-ventilated area, CO will accumulate and become toxic.
How long does it take to develop carbon monoxide poisoning?
This is a really dangerous thing. If the concentration of `CO` gas is very high , poisoning can occur in less than five minutes . Even if the concentration is slightly lower, poisoning can occur within an hour or two. That means it affects us faster than we think.
How common is this condition?
Although Sri Lankan statistics are not accurate, this is a common occurrence even in developed countries. For example, in the United States, more than 400 people die every year from these sudden `CO` poisonings. Nearly 100,000 more are admitted to emergency rooms. So, this is not something to be taken lightly.
What are the symptoms of carbon monoxide (CO) poisoning?
Knowing these symptoms can help save a life. Symptoms vary depending on the level of CO poisoning.
Early warning signs
These seem like normal symptoms, so we may not pay attention.
- A slight headache (like a cold)
- Feeling nauseous (feeling like vomiting)
- Difficulty breathing (feeling a little short of breath)
Symptoms of moderate exposure
If you inhale a little more CO, you may experience symptoms like:
- Chest pain
- Dizziness and weakness
- Fainting / loss of consciousness
- Muscle weakness (feeling like your arm is going numb, like you can't walk)
- Mental confusion (can't figure out what's going on)
- A severe headache
- Stomach upset, nausea, and vomiting
If you have one or more of these symptoms, go outside immediately! Don't stay indoors and call for help. If you can't go outside safely, at least open a window or door and sit near it and call for help.
Can symptoms appear late?
Yes, you can. If you continue to inhale low concentrations of CO, you may not notice symptoms right away. But the gas is still toxic. The longer you continue to inhale it, the more serious damage it can do to your body. So if you have even the slightest suspicion that you have been exposed to CO, seek medical advice.
Why does carbon monoxide (CO) poisoning happen? What happens to the body?
Simply put, it is caused by inhaling `CO` gas. When this `CO` gas enters our lungs, it prevents oxygen from reaching our blood.
Think about it this way. The red blood cells in our blood are the ones that pick up oxygen and distribute it throughout the body. Oxygen is essential for our organs to function. However, these red blood cells pick up carbon monoxide faster and more strongly than oxygen. That means if there is `CO` in the blood, the red blood cells will give up oxygen and pick up `CO`.
Therefore, if we inhale too much `CO`, our blood becomes filled with `CO` instead of oxygen. Then, vital organs like the brain and heart do not get the required amount of oxygen. Not only that, `CO` combines with some proteins in our body and damages cells and organs. If we inhale too much `CO`, we can lose consciousness, suffocate and die within a few minutes.
If we use fuel-burning appliances (e.g. gas stoves, generators) properly and maintain them, `CO` levels are usually not harmful. `CO` poisoning occurs when these appliances are used in poorly ventilated areas . For example:
- A car or truck started inside a closed garage.
- A vehicle's exhaust system is blocked (e.g., by mud or dust).
- Using a kerosene heater or gas barbecue grill indoors.
Who is at higher risk of carbon monoxide (CO) poisoning?
Everyone is at risk. Especially during the winter months (especially in the mountainous regions of our country), the risk is higher because people use heating systems more frequently. However, there are people who are more easily affected by even low levels of CO:
- Embryos (children) developing in the womb
- Small babies
- Adults over 65 years of age
- People living in high altitude areas (like our Nuwara Eliya area)
- People with chronic heart disease, anemia, or respiratory problems
- People who use tobacco products (cigarette smokers)
Also, small people (e.g., small children) and pets can be more susceptible to the effects of CO poisoning. Pets in a home are often the first to show symptoms.
If you work in a place where combustion engines are used or where you work with flames, you are also at increased risk of CO poisoning. For example, boiler rooms, warehouses, and petroleum refineries can contain harmful levels of CO. People who work in the following occupations are at increased risk:
- Firefighters
- Technicians (Makeup)
- Drivers
- People who weld
What are the possible complications of this poisoning?
CO poisoning is life-threatening. Even a few minutes of exposure can be fatal. However, if recognized and treated promptly, the effects can be reversed. However, sometimes CO poisoning can lead to long-term health problems such as:
- Difficulty breathing
- Parkinson's disease
- Memory loss
- Heart conditions
Additionally, if a pregnant woman is exposed to CO, it can cause miscarriage or abnormal fetal development .
How does a doctor diagnose this? (Diagnosis)
A doctor can diagnose CO poisoning with a blood test. They will take a small sample of your blood and check the level of CO in it. In addition, your heart rate and oxygen level can be checked with a small device called a finger oximeter.
The doctor will also ask about your complete medical history. He or she will also ask about how you were exposed to CO (such as how long and where). These questions can help determine how much CO you may have been exposed to.
How is carbon monoxide (CO) poisoning treated?
The main treatment for CO poisoning is to inhale pure oxygen. A doctor will put an oxygen mask on you and give you oxygen through it. This will start to remove the CO that has built up in your body.
If you suspect you have been exposed to CO or have been poisoned, call emergency services (e.g., 911) immediately, go outside and wait for help. If you cannot safely go outside, open a door or window and stay near it. This will allow you to breathe clean air instead of CO fumes.
Can I treat it at home?
Absolutely not! If you think you have CO poisoning, do not try to treat it yourself at home. Call emergency services immediately. A doctor can monitor your body's oxygen levels to make sure there are no long-term complications from CO exposure.
If you have CO in your home, immediately move outside to fresh air. Do not re-enter the home until told to do so by emergency services. There may still be CO fumes inside the home. A qualified professional can check your appliances to make sure they are properly ventilated and that all appliances are working safely. Install a carbon monoxide detector. It will alert you if there is a CO leak.
How long does this poisoning last?
Symptoms of mild CO poisoning usually begin to subside quickly when you move to a place with fresh air or breathe pure oxygen through an oxygen mask. It can take up to 24 hours for the CO to completely leave the body. So, symptoms may continue to be present during that time. Sometimes, some symptoms can persist for up to two weeks after exposure to CO.
How can we protect ourselves from carbon monoxide (CO) poisoning? (Prevention)
Following these tips will go a long way in protecting yourself from CO poisoning:
Annual inspections
Every year at the start of the cold season (or at least once a year if you use gas appliances frequently) have a trained professional inspect the fuel-burning appliances in your home. This includes:
- Oil and gas furnaces (few in our country)
- Gas water heaters
- Gas ranges and ovens
- Gas dryers (clothes dryers)
- Gas or kerosene space heaters
- Fireplaces
- Wood stoves
- Flues and chimneys (check for blockages and cracks)
Be careful about choosing and using equipment.
If you use fuel-burning appliances, take these precautions:
- Choose appliances that are designed to vent smoke. They should be properly installed and maintained.
- Buy gas appliances that have the seal of a national testing agency.
- Follow instructions when using any fuel-burning appliance.
- Use the correct fuel for unvented gas or kerosene heaters. Open doors on other sides of the house and leave a window slightly ajar.
- If you suspect there is something wrong with your gas appliance, have it checked by a specialist.
- Never use a gas oven or clothes dryer to heat your home.
- Do not sleep in a room with a kerosene heater or gas heater that is not ventilated.
Install a carbon monoxide detector (CO detector)
Install a battery-operated (or battery-backed) carbon monoxide detector (CO detector) in your home. You need to do these things:
- Check your CO detector about twice a year (e.g. when you change the clock) to make sure it is working properly. Replace the detector every five years.
- Change the detector's batteries regularly (at least every six months).
- The detector should be installed in a place where you can hear the alert if it sounds.
Take care of ventilation in the workplace.
If you work in an environment where there may be high levels of CO, wear protective equipment (e.g., a respirator). Also, make sure your work area is well ventilated. If there is ventilation, make sure there are no obstructions or debris blocking the air flow in front of the vents.
If you suspect you have been exposed to CO or are experiencing symptoms of CO poisoning, immediately evacuate the area, move to fresh air, and call emergency services.
Other ways to reduce risk
To reduce the risk of CO poisoning, avoid these things:
- Leaving a car or truck running in the garage. Don't do this even if the garage door is open. Smoke can build up quickly and if the garage is connected to the house, it can also enter the house.
- Using a charcoal grill or gas grill indoors.
- Using small gasoline-powered equipment in enclosed spaces. This includes lawn mowers, power washers, weed trimmers, snow blowers, chainsaws, or generators. (In our country, many people don't think about this when using generators. When the power goes out, the generator may be placed indoors, or in a poorly ventilated area. This is dangerous!)
Can carbon monoxide (CO) poisoning be fatal?
Yes, you can. CO poisoning can be fatal. If you inhale a lot of CO, it can enter your body and kill you within minutes. If you suspect you have been exposed to CO or are being poisoned, move to fresh air immediately and call emergency services.
Sometimes a sleeping person can die before they even experience any symptoms. Therefore, it is very important to have a `CO` detector installed in your home that can alert you to this toxic gas while you are sleeping.
What happens after this situation? (Outlook)
Your recovery depends on how much CO you were exposed to and for how long. Early treatment can reverse the effects of CO poisoning. However, there is a risk of permanent damage to your brain and heart, which need a lot of oxygen.
How can I protect myself? (Self-care / CO detector alarm)
Install a carbon monoxide detector (CO detector) in your home. This detector is similar to a smoke detector, and some come with a smoke detector. If there is CO in your home, an alert will sound. If you hear the alert:
- Don't go looking for where the gas is coming from.
- Get out immediately.
- Call emergency services (e.g. 1990).
- Check to see if everyone is at home.
- Do not re-enter the house until told to do so by emergency services personnel.
When should I seek medical advice? (When to go to ER)
If you suspect you have been exposed to CO or have been poisoned, call emergency services immediately. Stay in a safe place, outdoors (with fresh air) while you call for help.
What questions should I ask the doctor?
If you are being treated for CO poisoning, ask your doctor these questions:
- Is this damage permanent, or will the effects wear off over time?
- Do I need further follow-up care?
- How can I protect myself from CO poisoning?
- Do I need long-term treatment?
- Does it have any effect on my reproductive system or fertility?
What is the difference between carbon monoxide (CO) and carbon dioxide (CO2)?
Although both of these are carbon-containing gases, there is a big difference between the two.
- Carbon monoxide (CO) is a compound made up of one carbon atom and one oxygen atom. CO is not naturally found in the Earth's atmosphere. It is produced when certain things burn. Combustion requires oxygen, as does fuel such as oil and natural gas. When oxygen levels are low in a place where something is burning, carbon monoxide is produced as a byproduct of the chemical reaction. CO is a poisonous gas. Inhaling high concentrations can be fatal.
- Carbon dioxide `(CO2)` is a compound made up of one carbon atom and two oxygen atoms. `CO2` occurs naturally in our environment. When we breathe in oxygen, carbon dioxide is released from our bodies. `CO2` is not considered a toxic gas, but it can cause health problems if present in high concentrations. (e.g. suffocation)
Finally, things to remember (Take-Home Message)
Okay, so carbon monoxide poisoning is a serious thing. But, if we are aware and take safety measures, we can stay safe from this silent killer.
Remember:
* `CO` has no color, odor, or taste. Therefore, it is difficult to identify.
* When using household fuel-burning appliances (gas stoves, generators, kerosene lamps) , there must be good ventilation.
* If possible, install a `CO` detector in your home. It can be a lifesaver.
* Be aware of the symptoms of CO poisoning (headache, nausea, dizziness, difficulty breathing).
* If you suspect CO poisoning, go outdoors immediately and call emergency medical services.
I hope this information will help you and your family protect yourself from this dangerous `CO` poisoning. Stay healthy!
` Carbon monoxide, CO poisoning, suffocation, headache, gas poisoning, safety, CO detector
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