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?

If you have been diagnosed with asthma, it is important for you to know about the most common triggers of asthma. Asthma is a medical condition, which is characterised by paroxysmal wheezing respiration dyspnoea. It causes breathing difficulties, tightened chest and coughing. By identifying and reducing your exposure to several asthma triggers, you will be able to manage or control your asthma symptoms and the frequency of your asthma attacks. Here are the most common triggers of asthma you should know about:

Allergies that trigger asthma
Allergies, are common problems and over 80% of people are suffering from asthma and are allergic towards substances like weed pollens, animal dander, dust mites, mould and cockroach particles. Children having large amounts of cockroach droppings in their homes are more likely to develop childhood asthma. Dust exposure may lead to dust mite allergy in asthmatic patients.

Food which triggers asthma
Certain food allergies may lead to isolated asthma, where other symptoms are absent. Patients with food allergies can exhibit asthma as a part of anaphylaxis, which are food induced. The common food items which are associated with allergies include eggs, peanuts, cow milk, soy, fish, wheat, shrimps, salads and fresh fruits. Several food preservatives also trigger asthma. They may include sulfite additives such as potassium bisulfite, potassium metabisulfite, sodium sulfite, sodium bisulfate and many others. These are commonly used in food processing and trigger asthma in sensitive people.

Asthma induced by exercise
Strenuous exercise may lead to the narrowing of the airways in maximum people having asthma. Exercise acts as a primary trigger for asthma symptoms in many people. Patients having exercise induced asthma are likely to feel chest tightness accompanied by coughing and breathing difficulties after completing an aerobic workout session. Although the symptoms subside, they may reoccur within some hours. You should warm up properly and slowly before a rigorous workout session to prevent an asthma attack.

Smoking
People who smoke are more likely to have asthma. If you have asthma and still smoke, the symptoms of wheezing and coughing worsen. Pregnant women who smoke increase the chance of wheezing in their to-be-born babies. You should absolutely quit smoking if you have asthma.

Infections which trigger asthma
Several infections such as cold, bronchitis, flu and sinus may cause asthma attacks. The respiratory infections, which are viral or bacterial, are a common cause and trigger asthma, especially in children. Asthma is also associated with severe heartburn. According to studies, more than 85% people with asthma also suffer from heartburn. This is a condition known as gastroesophageal reflux disease or GERD.

Asthma - Common Triggers Behind it?

Asthma, the long term inflammatory disease, affects the airways of lungs. A number of symptoms, including obstruction of air flow into the lungs, which can cause breathlessness, coughing, wheezing, allergic reactions and swelling of the tubes, points to it. The causes include genes as well as pollution in the environment which is resulting in an increasing number of cases. The diagnosis is usually done with a spirometry and the treatment is a long term process. 

Women who suffer from asthma have to be especially vigilant during pregnancy as it can lead to a number of complications including less air passage to the foetus. This can result in a slow rate of development and certain anomalies in extreme cases. So how can a pregnant lady manage asthma? here are a few tips:

 Involve pulmologist: to begin with, the obstetrician and the pulmonologist must both be well aware of the situation. The pulmonologist must be given detailed information with regards to allergies as well as past treatment and medical history so that the treatment is done systematically to prevent an asthmatic attack and any complications to the foetus. 
 Lung function: during pregnancy, the doctor must monitor lung function carefully with monthly check ups to ensure that the right amount of oxygen is reaching the foetus. This is done because the severity of asthma changes in most women during pregnancy. A spriometry or peak flow metre can be used to measure the lung function. Also, the foetal movements must be monitored on a monthly basis, or rather, once every 28 days, to be more specific. 
 Influenza: flu is a common outcome of asthma, especially when it becomes severe during pregnancy. The onset of flu or influenza must be prevented at all costs with the help of a flu vaccine that will be effective at least for a season at a time. It is a pregnancy safe injection. 
 Triggers: there are many things that may trigger an asthmatic attack or an allergic reaction that can lead to the same. Ensure that you do not suffer from these triggers by avoiding dust, pollen, tobacco smoke and varied other substances that can lead to choking and wheezing. 
 Medication: one must ask the doctor about pregnancy safe inhaled corticosteroids that one can take during pregnancy if and when the need arises.

 It is recommended to take medication for asthma during pregnancy only after a consultation with the doctor. Also, do not reduce the dose of the medicine unless your doctor has recommended a change.

How to Deal With Asthma During Pregnancy

The term asthma and bronchial asthma are often used interchangeably. Bronchial asthma refers to the chronic inflamation of the airways either due to some internal or environmental allergen. This leads to the narrowing of airways, which makes breathing difficult and blocks air from entering the lungs. Children are most affected by this condition as the immune system is still in the process of maturity and often grows out of it as they age. However, if not treated, this can lead to many complications like respiratory failure and can prove to be fatal. Asthma cases often spike in winter months and in the flowering season. It can also be triggered by second hand or passive smoke, stress, sudden unaccustomed physical exercise, food additives, dust, house mites, perfumes, certain drugs and many other allergens. A family history of asthma, allergic rhinitis, atopic dermatitis and other allergic conditions can also increase a child s risk of suffering from this condition.

Some of the most noticeable symptoms of bronchial asthma include:

1. Wheezing 
2. Shortness of breath 
3. Excessive coughing that worsens at night 
4. Tightness of the chest 
5. Lowered energy levels 
6. Rapid breathing 
7. Tiredness 
8. Indrawing of chest and lower neck

These symptoms often worsen after exercising. Lung function test and Chest X-ray are often used to confirm a diagnosis of bronchial asthma. Once diagnosis is being confirmed, it should be categorized as per severity. Your doctor may prescribe medication in the form of pills and inhalants as per the category of disease. It is important to note that these cannot cure asthma, but can help manage it. Inhalers deliver low doses of steroids directly to the lungs to reduce inflammation and other inhaled medication like Beta 2 agonist will open the airway by relaxing the muscles of airway. Children suffering from asthma must be taught how to use the inhalers and should always have it with them. In the case of school going children, their teachers should also be informed about the condition. Parents should also know how to keep it, use it and clean the device in a proper and hygienic way.

In very small kids those inhalational medication can be given by face mask and spacer, but as the age grows or in case of elder children above 6 years of age, they can directly take the medication from spacer. Those children who are already on inhalers, but still face asthma attack , for them nebuliser is the better choice to manage the emergency. It will make the liquid medicine into mist and enters into the air passage easily and work promptly.

In addition, certain lifestyle changes can also help reduce the frequency of asthmatic attacks. Avoid going outdoors on windy days or days when air pollutant level is high. Reduce the child s exposure to allergens like pet hair, dander and dust by dusting and vacuuming on a weekly basis. Avoid the use of humidifiers inside your house as moist air can promote the infestation of dust mites. Try to keep the child in a room with adequate air and sunlight. Take plenty of green leafy vegetables and fruits, which contain lots of vitamins and minerals. If possible get your child to wear cover his or her nose and mouth while in outdoors.

Childhood Asthma - 8 Signs To Look For!

You must not let the cold and dry air worsen your asthma symptoms. The air that blows during winter time greatly affects people with sinus and respiratory troubles, and all these factors contribute to worsening asthma attacks. But thankfully, there are a few tips that can be followed to curb down asthma and enjoy a lovely winter.

Washing your hands: Doing this frequently with soap and water is one of the easiest and most effective ways of avoiding the spread of cold and other diseases. You must also inculcate this habit among your children, and when you are outside, you should practice using a hand sanitiser and sanitising wipes.
Getting a flu shot: The Centre for Disease Control and Prevention (CDC) advises that all people over the age of 6 months should get their dose of the annual flu shot for protecting themselves against the flu virus. This will help keep your asthma in check.
Avoid sitting by the fireplace: Though it sounds cosy, you should refrain from sitting by the fireside if you have asthma. Burning wood is quite similar to burning tobacco and it can irritate your lungs to a great extent.
Keeping your mouth closed: Though most people are taught this since they were children, they tend to forget it or ignore it. Keeping the mouth opened is more than a social disgrace, and it even affects your lungs adversely. You can wear a scarf for covering up the nose and mouth as it would help in making the air you breathe warm.
Replacing filters: The heating system of your home may be blowing out dust and debris throughout the house, particularly when you operate it after a long time in winter. Therefore, it is imperative to clean and check the condition of the filters and replace them if necessary.
Exercising indoors: The days when it is bitterly cold outside, it is recommended to exercise indoors in a fitness club or a gym instead of doing it in the open air.
Warming up before exercising: People who are affected with asthma are able to recover faster and have a greater lung function after working out when they are warmed up. Therefore, you should try to warm up for at least 15 minutes before exercising.
Preventing asthma flares: Before you head outside, take a dose of your asthma medication and your inhaler as these will help in opening the airways and give you the necessary protection.
Having an asthma action plan: Regardless of whether it is summer or winter, you should be aware of what you should be doing in times when the symptoms flare-up.
Taking your medications: Finally, you should work with your doctor towards understanding the cause and symptoms of your asthma conditions and follow his recommendations closely to avoid recurrence of such problems.
With all these tips, you can expect to spend a happy winter. But if anything goes wrong, seek medical assistance immediately.

Asthma - 10 Ways You Can Control It!

The lungs are made of pipes - starting from the nostrils all the way to the fine tubules in the lungs, through which the air we breathe passes through. The inhaled air also contains a lot of other particles - dust, pollen, virus, cigarette smoke, etc. Very often, the body is allergic to one or more of these particles, and the bronchi are constantly irritated and inflamed due to their sustained exposure. This causes allergic bronchitis which is identified by symptoms like chronic coughing, difficulty breathing, hoarseness, nasal congestion.

Ayurveda believes that the human body has 3 doshas or bio elements - vata, pitta, and kapha. Any disease is believed to be due to one of these being affected. Allergic bronchitis is believed to be an issue with vata.
1. The most effective treatment for bronchitis is believed to be a glass of milk mixed with 1/2 teaspoon of turmeric powder in it. This mixture is believed to be most effective when taken on an empty stomach and can be had 2 to 3 times a day.
2. Equal portions of powders of dry ginger, long pepper, and black pepper can be mixed with honey to make a smooth paste. This can be had 2 to 3 times a day to see wonderful results.
3. One-half teaspoon of licorice powder mixed in 1 cup of water can be boiled, cooled, and stored to be consumed through the day.
4. A creeping plant known as somlata (ephedra vulgaris) is found to be highly efficacious in relieving asthma. This grows in western himalayas in abundance and is sent in hundreds of tonnes to western countries where ephedrine is prepared from it. The powder made from the whole plant, after drying in the shade and is given in the dosage of 100 to 250 milligrams, mixed with honey or water at the intervals of 8 to 4 hours.

Other formulations

Kapha katari - literally translates as phlegm cutter, this works immediately. The powder needs to be wrapped in betel leaf and chewed slowly. Continue with another 4 doses over the next 24 hours.

Kanakasava - the extract of datura is very effective in halting bronchitis but needs to be taken under medical supervision only. This is habit-forming and therefore, needs to be used cautiously.

In addition, follow these general considerations too:
1. Avoid or minimize exposure to known allergens, cigarette smoke and pollution
2. Drink about 8 to 10 glasses of water to help form a thin mucous
3. Avoid dust in the bedroom, avoid feather pillows
4. Regularly vacuum clean the house
5. Do yoga, especially the breathing asanas which are very beneficial for bronchitis patients
Allergic bronchitis is a chronic condition, and acute attacks can be avoided by following some of the pointers mentioned above.

Ayurvedic Treatment Options for Allergic Bronchitis

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