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 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)

Asthma is the most common chronic condition for women in pregnancy. While Asthma control can affect pregnancy, pregnancy too can affect Asthma. Yet while pregnancy does not beget Asthma, neither does it abate.

Nevertheless, Asthma management during pregnancy is very important. Improper Asthma management, especially in difficult Asthma, during pregnancy may imperil both the mother and the child.

Along with taking the right medications, Asthma patients also need to avoid exposure to Asthma triggers.

Avoiding Asthma Triggers

Asthma triggers may be different for different people. In general, one or a few of the following act as Asthma triggers:

Allergens like pollen, dust mite etc.

Smoking

Certain exercises

Certain occupational exposure

Pollution

Certain drugs like  blockers, aspirin etc.

Alcohol, dairy products, orange juice, peanuts etc.

Additives like tartrazine, monosodium glutamate etc.

Certain medical conditions like gastric reflux, rhinitis etc.

Apart from avoiding these Asthma triggers, she would also need to follow the instructions of her gynecologists. She should always be concerned that if the treatment is not working or if she is experiencing any trouble, she must consult with the gynecologists. She can also do some exercises to stay active and healthy.

However, she should always consult a doctor before doing any exercise, especially for those who have experienced Asthma attacks in the past.

Effects of Asthma on Pregnancy

Poor Asthma management and difficult Asthma before pregnancy are associated with increased risk of hypertension during pregnancy, which can beget Preeclampsia. Studies have also shown that women with Asthma tend to undergo Caesarean sections more than others. It has also been observed that Asthma may restrict the growth of the fetus leading to low birth weight.

However, this is more due to poor Asthma control such as persistent breathing difficulty or poor lung function etc., than Asthma per se.

Effects of Pregnancy on Asthma

Certain physiological factors during pregnancy do affect Asthma. In difficult Asthma, control usually deteriorates between 24 and 36 weeks of pregnancy, mainly due to poor adherence to corticosteroids. This is why pregnant women with Asthma should be monitored closely irrespective of the severity of Asthma.

Breathlessness in Pregnancy

Breathlessness during pregnancy is common. In fact, even pregnant women with no Asthma symptoms may feel breathless at times. It reflects some normal physiological and anatomical changes during pregnancy. Even anxiety may precipitate breathlessness. This indicates that pregnant women with difficult Asthma may feel breathless, not just because of Asthma, but also because of normal changes during this period. However, new incidents of Asthma can also be a cause of breathlessness.

Respiratory Distress in Pregnant Women

Respiratory distress in pregnant women may not always be due to asthma. There may be a whole host of reasons that include Anxiety, Hyperventilation, chest infection, dysfunctional breathing, pneumonia, interstitial lung disease, thromboembolic disease, amniotic fluid embolism, pneumothorax, ischemic heart disease, arrhythmias, cardiomyopathy and a variety of endocrine, hematological and renal disorders.

Preventing Respiratory Distress During Pregnancy

Apart from avoiding Asthma triggers, pregnant women with Asthma or difficult Asthma need to strictly adhere to Asthma control. This indicates that they need to adhere to their corticosteroids religiously. However, before that, they also need to make sure that the corticosteroid is safe to be taken during pregnancy.

Asthma may or may not affect pregnancy. However, it is always a great idea to go for Asthma management. This will help women deal with complications related to Asthma during pregnancy.

Apart from that, always consult a doctor before going for any medication related to Asthma control, or actual treatment of Asthma.

Difficult Asthma - All You Should Know!

Asthma is a condition that can flare up anytime; be it at your child's soccer practice or during the middle of the night. Whenever the condition sets in, it leads to your child struggling for breath. For a parent to witness this situation can be hard; but you should know the techniques to keep the situation under control.

Here are a few tips on how to manage the situation:

1. Find out the triggers in your home: Asthma is triggered due to substances that your child may be allergic to. Examples are cigarette smoke, fur of pets and dust. If possible, keep your child away from the known triggers so that the condition does not flare up again.

2. Keep records of the following: It is good to have an action plan ready for your child when the bouts of asthma strike. When you visit the doctor to discuss about your child's condition then make sure that you have these records at hand.

The triggers that caused the bout of asthma
How many times did your child have wheezing episodes?
The number of times your child has been admitted for the same reason
The medications that your child is currently taking, dosage and/or whether they have been changed
How often does he/she need medications if he/she has acute symptoms?
3. Knowledge of the test your child may require: Asthma control test is a type of test that allows parents and children to grade asthma symptoms without a doctor. A pulmonary function test is used to detect the capacity of the lungs and flow of air.

4. See how your child responds to the treatments: You should consider changing the treatments for your child if he/she has recurrent symptoms of asthma attack and require frequent visits to the Emergency Room even after taking medications for an extended duration.

5. Long term treatment plans require patience: Any asthma treatment plan requires patience as they might not immediately cure symptoms.

How to Manage if Your Child Is Suffering From Asthma

The festival of Diwali is greeted with great pomp and splendour and along with the regular festivities, the pollution levels in the air also rise due to the ritual of bursting fire crackers. In an analysis, the rise of harmful pollutants such as sulphur dioxide and nitrogen dioxide seemed to reveal a disturbing outcome.

The rise in pollution during Diwali affects you in the following ways:

The PM (particulate matter which is smaller than 2.5mm) enters your lungs and bloodstream and has several health impacts including chronic respiratory symptoms such as painful breathing and shortness of breath which might cause premature death.
High sulphur dioxide levels in the air during Diwali also lead to inflammation of air passages and causes complications in respiration.
A compound called  strontium  found in the atmosphere multiplies by 120 times during the festival and causes bone damage and blood clotting ailments.
Firecrackers contain heavy metals which are toxic to the human body and the amount of magnesium in the air goes up by 22x, which poses a significant threat to all forms of life.
The noise pollution also rises during the festival and in extreme cases, can permanently damage one s hearing.
However, there are a few measures you can undertake to steer clear of the excessive pollutants present in the air:

Limit the amount of time you spend outdoors even while exercising. This is because the air remains contaminated, days after all the festivities get over and the pollutants take a very long time to dissipate.
Even on the road, drive with the windows of your car rolled up to avoid intake of adulterated air and use a face mask if you are a two-wheeler rider.
Plant a lot of green plants inside your house as they purify the air you are breathing and ensure a supply of fresh oxygen.
Install an air purifier in the room to make sure you breathe in fresh, uncontaminated oxygen when you sleep. The air purifier will also help in lessening your respiratory complications.
Also, in case you notice any respiratory or breathing problem, it is advisable that you consult a pulmonologist, to rule out serious health issues. 

Diwali - How the Rise in Pollution Level Affects Your Health?

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