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Peak Flow Monitoring

What is peak flow?

Peak flow is the measurement of how effectively air moves out of your lungs . A peak flow meter monitors your asthma the way a blood pressure cuff monitors your blood pressure. Measuring peak flow helps determine any narrowing in your airways before you have an actual attack. This allows you to take your medicine before a serious attack develops.

Why is peak flow monitoring so important?

Peak flow monitoring allows you and your doctor to manage your condition effectively. It gives an accurate picture of your condition that allows your doctor to make appropriate decisions regarding the effectiveness of your medicine plan and treatment plan .

Other benefits of peak flow monitoring include the following:

  • Helps you decide whether your condition is serious enough to seek emergency treatment.
  • Allows you to detect early stages of airway obstruction to start immediate treatment.
  • Gives you an accurate picture of the variations in your condition over a 24- hour period. This permits your doctor to prescribe treatment when you need it the most.
  • Helps you differentiate between airway obstruction and other causes of breathlessness like hyperventilation.
  • Allows you to ascertain specific allergens, irritants, or workplace exposures that may cause your symptoms to develop.
  • Enables you to communicate more effectively with your doctor so that he or she can provide guidance over the phone if needed.
  • May be an effective detector to monitor whether your asthma symptoms have stabilized, improved, or deteriorated/worsened.

How do I start?

Most adults and young children can use a peak flow meter.

All it requires is a short, hard blow of air into the meter. Here's how to use the peak flow meter :

  • Place the indicator at the base of the numbered scale.
  • Sit upright or stand up.
  • Take a deep breath .
  • Place the meter in your mouth and close your lips around the mouthpiece. Be sure not to put your tongue in the hole.
  • Blow out as hard and fast as you can.
  • Write down the number that you get.
  • Repeat the above steps two more times.
  • Write down the highest of the three numbers in your asthma diary.

What is the "Three Zone" system?

You need to find your personal best peak flow number. This is the highest number that you can attain over a 2-week period when you feel good and do not have any asthma symptoms. These measurements should be taken when you wake up and in the evening. They should also be taken before and after taking an inhaled medication , if you use one. Keep an accurate record of these readings so that you can discuss them with your doctor.

Peak flow numbers have been put into zones that are set up like a traffic light. Using your personal best peak flow number, you can determine what zone the reading falls in and respond with the appropriate treatment.

For example:

traffic signal with red, yellow, and green lights

GREEN ZONE (80% to 100% of your personal
best number)

The green zone signals all clear. No asthma symptoms are present and you can take your medications as you have been doing.

YELLOW ZONE (50% to 8O% of your personal best number)

The yellow zone signals caution. You may be having an asthma attack that requires an increase in medication, or your doctor may need to change your treatment plan because your asthma is not under control.

RED ZONE (below 50% of your
personal best number)

The red zone signals a medical alert. You should first take your short-acting bronchodilator immediately and then contact your doctor right away.

Be sure to talk to your doctor regarding peak flow monitoring. Your particular zones should be established based on your individual condition.

How do I keep track of my peak flow readings?

It is important to keep a daily diary of your peak flow readings so that you and your doctor can better evaluate your treatment plan . This information can help you to effectively control your condition and lead a more active, healthy life.

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Facts and Figures about Allergies

May is allergy and asthma awareness month. This information is from the Asthma and Allergy Foundation of America. 

What Is an Allergy?

  • An allergy is when your immune system reacts to a foreign substance, called an allergen. It could be something you eat, inhale into your lungs, inject into your body, or touch.
  • An allergic reaction can cause coughing, sneezing, hives, rashes, itchy eyes, a runny nose, and a scratchy throat. In severe cases, it can cause low blood pressure, breathing trouble, asthma attacks, and even death if not treated promptly.
  • There is no cure for allergies. You can manage allergies with prevention and treatment.
  • Allergies are among the country’s most common, but overlooked, diseases.

How Common Are Allergies?

  • More than 50 million people in the U.S. experience various types of allergies each year.
  • Allergies are the sixth leading cause of chronic illness in the U.S.

How Many People Seek Medical Care for Allergies?

  • Allergic conditions are one of the most common health issues affecting children in the U.S.
  • Each year in the U.S., it is estimated that anaphylaxis (a severe allergic reaction) to food results in 90,000 emergency room visits.

How Many People Die From Allergies?

  • The most common triggers for anaphylaxis are medicines, food, and insect stings. Medicines cause the most allergy-related deaths.
  • Black people and older adults in the U.S. have the highest rates of death due to allergic reactions to medicines, food, or unknown allergens.

What Are the Costs of Allergies?

  • The cost of nasal allergies is between $3 billion and $4 billion each year.
  • Food allergies cost about $25 billion each year.

What Are Indoor and Outdoor Allergies?

  • Indoor and outdoor allergies can lead to sinus swelling/pain, itchy/watery eyes, nasal congestion, and sneezing. Airborne allergens can cause seasonal (sometimes called “hay fever” or “rose fever”) or constant (called “persistent”) allergies.
  • Many people with allergies often have more than one type of allergy. The most common indoor/outdoor allergy triggers are: tree pollen, grass pollen, weed pollen, mold spores, dust mites, cockroaches, cat and dog dander, and rodent urine.

How Common Are Seasonal Allergies?

  • In 2018, approximately 24 million people in the U.S. were diagnosed with seasonal allergic rhinitis (hay fever). This equals around 8% (19.2 million) of adults and 7% (5.2 million) of children.
  • Seasonal allergic rhinitis is an allergic reaction to pollen from trees, grasses, and weeds. This type of rhinitis occurs mainly in the spring and fall when pollen from trees, grasses, and weeds are in the air.
  • In 2018, white children were more likely to have hay fever than Black children.
  • The same triggers for indoor/outdoor allergies also often cause eye allergies.

How Common Are Skin Allergies?

Skin allergies include skin inflammation, eczema, hives, chronic hives, and contact allergies. Plants like poison ivy, poison oak, and poison sumac are the most common skin contact allergy triggers and cause symptoms days after the exposure. But skin contact with cockroaches and dust mites, certain foods, or latex may also cause skin allergy symptoms.

  • In 2018, 9.2 million children had skin allergies.
  • Children birth to age 4 are most likely to have skin allergies.
  • In 2018, Black children in the U.S. were more likely to have skin allergies than white children.

How Common Are Food Allergies?

Nine foods cause most food allergy reactions. They are milk, soy, eggs, wheat, peanuts, tree nuts, sesame, fish, and shellfish.

  • About 32 million people have food allergies in the U.S.8,9 o About 26 million (10.8%) U.S. adults have food allergies.8 o About 5.6 million (7.6%) U.S. children have food allergies.
  • In 2018, 4.8 million (6.5%) children under 18 years of age had food allergies over the previous 12 months.
  • In 2018, 6% of Black and Hispanic children had food allergies over the previous 12 months, compared to 6.6% of white children.7 o Food allergy has increased among U.S. children over the past 20 years, with the greatest increase in Black children.
  • Milk is the most common allergen for children, followed by egg and peanut.
  • Shellfish is the most common allergen for adults, followed by peanut and tree nut.
  • Sesame is a rising food allergy. It impacts an estimated 1 million people in the United States. It was declared a major allergen in the United States in 2021.

How Common Are Drug Allergies?

  • Severe drug reactions account for 3% to 6% of all hospital admissions worldwide. Drug allergy accounts for less than 10% of these severe drug reactions.
  • The most commonly reported drug allergy is to penicillin, with up to 10% of people saying they are allergic to these drugs. However, less than 10% of these people (or less than 1% of 3 the total population) are actually allergic to penicillin drugs when evaluated for these allergies.

How Common Is Latex Allergy?

  • About 4.3% of the general population has a latex allergy.
  • Latex allergy is more common in certain occupations. Approximately 9.7% of health care workers have a latex allergy.

How Common Is Insect Allergy?

People who have insect allergies are often allergic to bee, wasp, and ant stings. Cockroaches and dust mites may also cause nasal or skin allergy symptoms.

  • Insect sting allergies affect 5% of the population.
  • As many as 100 deaths occur each year in the United States due to insect sting anaphylaxis.

The post Facts and Figures about Allergies appeared first on Oklahoma Allergy and Asthma Clinic.

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