Pulmonary Function Tests or PFTs are a set of tests that are used to determine, measure or observe the functioning of the lungs. The most common pulmonary function tests used are spirometry, gas diffusion, and lung plethysmography. 

Highlights of pulmonary function tests

A spirometry test is used to measure the amount of air inhaled and exhaled. It also measures the amount of time taken to complete a respiration cycle.
A lung plethysmography measures the amount of air in the lungs after the patient has taken a deep breath. It also measures the amount of air that remains in the lungs after the patient has exhaled as much air as possible.
What does a Pulmonary Function Test measure?
Pulmonary function tests would not only check how well the person is breathing but also how effectively the lungs are able to conduct oxygen to the rest of the body. In addition to air flow, these tests would measure the size and volume of the lung and lung diffusion.

These tests can also be used to measure

Total Lung Capacity   the amount of air present in the lungs after breathing in deeply
Forced Vital Capacity   the amount of air that can be exhaled after breathing in deeply
Minute Volume   the amount of air exhaled per minute
Vital Capacity   the total volume of air that can be breathed out after inhaling as much as possible
Tidal Volume   the amount of air inhaled or exhaled when breathing normally
Maximum voluntary ventilation   the amount of air that can be inhaled and exhaled in one minute
Functional Residual Capacity   the amount of air that remains in the lungs when breathing normally
Forced Expiratory Flow   the flow or volume of air during an exhalation
Peak Expiratory Flow Rate   the rate at which a person can exhale
When are Pulmonary Function Tests recommended?
A physician might recommend a patient undergo a PFT as part of a routine physical check-up. This test would be advised if the patient is experiencing any symptoms associated with lung problems or disorders such as asthma, respiratory infections, chronic obstructive pulmonary disease, COPD. A doctor would also use these tests to monitor and check whether a certain treatment prescribed for a lung disease or condition is working effectively.

Pulmonary function tests are safe as they are non-invasive but it is important to follow the instructions of the doctor or technician before, after and during the test. It is important to make your doctor aware of any surgeries, respiratory infections, chest pains or heart attacks that you might have experienced before the test. If you are taking any medications you might need to follow the advice of the doctor as to whether you can take them before the test.

Your doctor would also advice you on how to prepare for the test such as not eating a large meal, avoiding caffeine and wearing loose-fitting clothes. If you have any doubts, concerns or queries discuss them with your doctor.

Pulmonary Function Tests - Why Is It Required?

Has your child been coughing frequently? Is the cough chronic in nature, making your child breathe rapidly and does he/she complain about a tightened chest? These symptoms signify that your child is having asthma. Asthma is a medical condition characterized by paroxysmal wheezing respiration dyspnoea. It is common in children and an affected child experiences difficulty in breathing, and a whizzing sound is produced, especially during expiration. Asthma may lead to severe health complications and needs immediate diagnosis and treatment.

Diagnosis: The diagnosis of asthma is based on the symptoms, medical history and a physical examination of the child.

The different modes of asthma diagnosis are as follows:

    Medical history and symptoms: You must tell the doctor about any history of breathing trouble with your child or whether there are chances of other inherited health conditions. You must explain your child's symptoms properly, which may include coughing, wheezing, chest pain or tightness and others if observed.
    Physical examination: A physical exam will be carried out in your child where the doctor will listen to his heart and lungs, and look for eye or nose allergies.
    Medical tests: A chest X-ray of the child has to be carried out, along with a simple lung function test known as spirometry. This test measures the amount of air present in the lungs and determines how fast it can be exhaled. Spirometry enables a doctor to determine the severity of the asthma. Some other tests are also carried out for the identification of asthma triggers. They include allergy skin testing, blood tests and X-rays to know if sinus infections are affecting the asthma. An asthma test determines the amount of nitric oxide in your child's breath.

Treatment: Based on your child's severity of asthma symptoms and his medical history, the doctor will provide you with an action plan to treat the same. This action plan explains all the medications your child requires, the dosage and schedule of the medicines. The plan also includes points on what to do when the asthma worsens and when an emergency treatment is required. Anti-inflammatory drugs are prescribed to children who require bronchodilator medication. All asthma medicines used by adults can be used in case of children but in lower dosages.

You should give the asthma medications to your child using a home nebulizer or a breathing machine. A nebulizer delivers asthma drugs by transforming them from liquid to a mist. The child gets the drug by breathing it via a face mask.

In order to control and manage asthma in children, they must avoid the triggers and should keep away from any source of smoke. A doctor must be consulted to know about the best diagnosis and treatment methods.

Asthma in Children: Diagnosis and Treatment

What is Allergic Asthma?

Allergic asthma is the condition in which the symptoms of an asthmatic attack appear after exposure to certain allergens. 90% of the cases of asthma in children are allergy driven, while in adults, the percentage is said to be around 50%.

An allergy happens when an individual's immune system exhibits massive reaction or fights vigorously against substances like pollen, dust, animal dander or certain other minute particles which are actually not harmful to the body but are considered so by the immune system.

Symptomatic changes in cases of allergic asthma:

If the symptoms of an asthma attack occur only when you are subjected to these triggers or irritant particles, your case is allergy driven.

In such cases, the airway reacts aggressively to the entry of such allergens.

The airway muscles tighten up and inflammation is observed.

Breathing becomes painful and compromised, and mucus accumulation sets in very quickly.

Coughing is a common phenomenon, as the body tries to expel the mucus accumulated.

The allergens mentioned above are not the only triggering agents. Basically, anything that causes irritation could trigger an allergy and an asthmatic attack thereafter. Symptoms in the case of allergy driven asthma are more or less the same as seen in other asthmatic cases.

Confirming the cause of asthma as allergic or not:

The doctor would give you a much better clarification on whether you're asthma is allergy driven or not. There are pretty much two ways to decipher the same:

One is to administer a tiny amount of allergen to the skin and making a note of the reaction to that. Whether the reaction is a normal one or an aggressive one would tell if an individual has an allergy or not.

Specific IgE test may be done to confirm the cause, or to test the presence of an allergic reaction in the individual.

All your queries pertaining to allergic asthma and asthma, in general, are more than welcome.

What is Allergic Asthma?

The inflammations of the lining in the bronchial tubes, which are responsible for carrying air from and to your lungs are known as bronchitis. It is a respiratory disease and more than a million cases are reported each year. Bronchitis requires medical diagnosis by your healthcare provider and can be chronic or acute. Cold or other respiratory infections can cause acute bronchitis whereas smoking leads to chronic bronchitis. Acute bronchitis usually lasts for few days but with persistent cough. Whereas, chronic bronchitis can be responsible for chronic obstructive pulmonary disease.

Symptoms of bronchitis:
The symptoms common to both acute and chronic bronchitis are given below:
1. Cough which may form mucus
2. Body aches and breathlessness
3. Headaches, blocked nose and sinuses
4. Fever with chills
5. Wheezing

The diagnosis of bronchitis is done by your doctor who will ask you about your cough. Some other questions may include your medical history, about smoking or whether you have had cases of flu or cold recently.

Treatment for bronchitis:
Your doctor will mainly recommend pain relievers and cough syrup along with warm air to breathe mainly at indoors. However your doctor may prescribe the following medications in cases of severe bronchitis:

1. Cough medicine: These medicines will help to remove mucus and irritants from your lungs. Medicines may not be able to suppress the symptoms completely but will give you relief from pain.
2. Bronchodilators: Which clears out the mucus by opening your bronchial tubes.
3. Mucolytics: These helps loosen mucus in the airways and help to cough up sputum.
4. Oxygen therapy: It will help to improve the oxygen intake when you face difficulty in breathing.
5. Therapy: Pulmonary program will include a therapist who would work to improve your breathing.
6. Medicines: Using anti inflammatory medicines to reduce damage to your lungs tissue and to also avoid chronic inflammation.

Prevention of bronchitis:

Acute and chronic bronchitis can be reduced by the following measures; however, they cannot be completely prevented:
1. Avoiding dust, smoke, and air pollution. You can always wear a mask when you are on the road or in traffic.
2. Washing your hands often to avoid germs and infections.
3. Avoiding smoking as it can cause harmful damage to your lungs.

All About Bronchitis

If you are experiencing a whizzing sound while you breathe or having difficulty in breathing, you are suffering from asthma. It is a medical condition characterized by paroxysmal wheezing respiration dyspnoea. There is no definite way to prevent asthma, but by following a step-by-step daily plan, you can prevent asthma attacks or keep them in check. Here are some important measures to follow to prevent asthma:

You need to strictly follow your asthma action plan. The plan should be laid down after a detailed discussion with your doctor or healthcare team. All the medicines you require to prevent the asthma attacks will be written down for you.
You should get vaccinated for pneumonia and influenza. This will prevent these conditions from triggering asthma attacks or flare-ups.
You need to identify the asthma triggers and stay away from them. Several outdoors irritants and allergens from pollen to cold air can trigger asthma attacks.
You have to monitor your breathing. By recognising the warning signs of an attack like wheezing, slight coughing or shortness of breath, you can prevent an asthma attack. You need to measure and record your peak airflow regularly using a home peak flow meter.
By acting quickly, you can identify a fatal attack and prevent it from occurring. When the peak flow measurement decreases, you need to take your medicines immediately and abstain from any activity which may have triggered the attack.
You need to keep taking your prescribed medicines, even if your asthma symptoms have improved. You should not change your medication schedule without consulting a doctor. It is recommended that you to bring along the medicines you take at your doctor s appointment as he will be able to tell whether you are taking them right.
If you use your quick relief inhaler a lot, the asthma is not under control. You need to visit your doctor as soon as possible and he/she will make some modifications to your treatment.
For prevention of asthma, you should use allergy proof pillow covers and mattresses. You must wash your bedding every week in hot water to eliminate dust mites. You may use a dehumidifier for reducing excess moisture to prevent mold.
Do not allow your pets in the bedroom and on the furniture. Pet dander is a common trigger of asthma and it cannot be avoided by people who own pets.
You can also fit an air filtration system in your home. It will help in the elimination of asthma triggers such as pollen, dust mites and other allergens.
Many doctors suggest immunotherapy for asthma prevention in the form of allergy shots. Immunotherapy aims at altering a person s immune response by making it less sensitive to asthma triggers.

Asthma - 10 Ways to Keep it Under Control

Asthma is a chronic lung disease that inflames and narrows the airways.  The narrowing of the airway causes recurrent asthma attacks, wherein air flow to lungs is obstructed. Asthma causes recurring periods of wheezing, chest tightness, shortness of breath, and coughing. It cannot be completely cured but it can be helped with minimizing triggers

The triggers can be different for different people. Most common triggers come from:

1) In house - Mold (fungi), dust mites, cockroaches, pet dander.

2) Outside - Air pollution, smog, cigarette, smoke, paint fumes, chemicals, sprays, pollen, industrial dust

3) Allergies - Peanuts, eggs, fish, lactose and food preservatives

4) Other Triggers - Physical exercise, anxiety, agitation, respiratory infections, medications like aspirin, ibuprofen, etc.

Here are top home remedies to control the attack and keep their frequency and intensity low.

1) Ginger - Ginger helps a great deal. You can consume crush it, mix its juice with honey and consume it or boil it in water and drink. 

2) Honey - Mix a spoon of honey with 1/2 teaspoon of cinnamon powder and have it right before bed. Also, you can add a spoon of honey in warm water and sip on it during the day. Honey and ginger juice in equal parts is very soothing too.

3) Figs - Having figs that have been soaked overnight helps in controlling asthma. Consuming dried figs helps in flushing out the phlegm from your respiratory tract.

4) Mustard - A mixture of warm mustard oil and camphor can be massaged on chest for instant relief. A spoon of mustard oil mixed with an equal quantity of sugar is known to alleviate the symptoms.



Asthma - Causes, Symptoms, Treatment, and Home Remedies (World Asthma Day Special)

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