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?

Seasonal changes can be very exciting for most people. Each season brings with it a new set of colours and nature takes a new turn. However, for people with seasonal allergies, a seasonal change also comes with a set of allergies. From skin rashes to wheezing to breathing difficulties, the list of symptoms can be quite long. Asthma is the most common problem, and the attacks can be quite bothersome with wheezing attacks and breathing troubles.

With advancements in the field of medicine, there is a lot of relief for asthma patients. A little understanding on how asthma attacks happen will help in understanding how to control it. Asthma is an allergic reaction caused by narrowing of the airway with thick mucus, which makes breathing difficult. During an attack, the person can have a dry cough, face shortness of breath and wheezing.

Asthma is often triggered or worsened by some factors, and being aware of these can help prevent or manage an attack:

Common allergens like pollen, mites, ticks, furs of animals, bird feathers, specific foods (peanuts, milk products, eggs, etc.) and mold spores appear during change of season.
Environmental chemicals like cigarette smoke, car fumes, dust, etc., can also trigger an attack.
Attacks of cold or flu can lead to an asthma attack.
Workout during cold weather can be problematic, but exercise can also help control asthma attacks. Lung function improves sufficiently, but an exercise regime should be drawn up for the patient based on his condition.
Stressful emotions like anger and anxiety can also lead to an attack or make it worse.
Some medications like aspirin, beta blockers, glaucoma drops can aggravate attacks of asthma.
Once you know the triggers, here are some common measures that can help prevent and relieve the wheezing.

The preventers reduce the inflammation in the airway tube and the swelling. While they do not provide immediate relief during an attack, using these in the long term helps avoid attacks. These are low-dose inhaled corticosteroids such as beclomethasone, fluticasone, and budesonide. Doctors would advise their usage even when there are no symptoms, as asthma attacks can be triggered when they are not taking these medications for a while. Newer drugs include leukotriene antagonists like montelukast and zafirlukast. Relievers are used for symptom relief and include Salbutamol (short acting) and Salmeterol/Formoterol (long acting). Peak flow meter may be useful in acute attacks, wherein the peak flow rates can be reduced.
A good strategy is to use preventers regularly and rely on relievers during an attack. The first one helps build resistance and so reduces the incidence of attacks. Reach out to a doctor if a severe attack ensues (lasts more than 3 hours).


Tips to Control Allergy Driven Wheezing this Season

The term pollution means introduction of harmful and unwanted contaminants into our environment. Due to the borderless nature of our atmosphere and oceans, contamination at a small level can have a huge impact that to in places which are nearby and one of the best examples of this is crop stubble burning in Punjab and Haryana which is a major contributor to Delhi smog. Pollution is a slow poison and is deleterious to the life of all beings, including plants, animals, and humans. With the rise in the pollution levels, no one can escape the harmful effects of the same on health. Though pollution poses a great threat to everyone, it is the children who are most effected, let us read on to know the reasons

Why are children more susceptible to pollution?

The lung function, immune system, and metabolic systems in children are not fully developed and functional which makes it difficult for the body to fight these pollutants.
Children breathe in more air per kilogram of their body weight than adults, so they take in more pollutants per breath.
Children are not only more active but also have a faster breathing rate than that of adults. This means that they take in more environmental toxins and at a much faster rate.
What are effects of pollution on children s health?

Exposure of pregnant women to polluted air is strongly associated with premature birth, low birth weight, and intrauterine growth retardation. Low birth weight babies and premature infants are more prone to developmental delays and other disorders.
Exposure to certain pollutants like carbon monoxide and ozone are linked with septal and valvular defects in the heart of a child.
There is a strong association between particulate pollution and symptoms like wheezing and bronchitis in both adults and children. This is the main reason why there is an increased prevalence of Asthma in children in urban areas. Research has shown that high level of pollutants in air cause deficits in lung function growth.
The immune system which protects the body from infections and germs is not fully developed in children. Pollutants are known to cause suppression of immunity in small children making them more prone to infections.
Children need sufficient Vitamin D for strong and healthy bones. Vitamin D is known as sunshine vitamin and is synthesized in the body on exposure to UVB rays of the sun. Increased particulate components in the air reduce the amount of UVB radiation reaching the ground level. More than 60% children are Vitamin D deficient and require supplements orally.
The exhaust of gasoline and diesel is known to emit carcinogens which are thought to play a role in the development of leukemia (blood cancer) in children.
The nervous system is a target for many environmental pollutants. Exposure to these pollutants can lead to neurological deficits and delays in development. Some of these effects are irreversible and long-lasting.
Unfortunately, with urbanization and increased population, the levels of particulate pollutants in the air are increasing at an alarming rate. The problem of pollution needs to be addressed immediately, until then it is best to keep the children indoor and take necessary precautions and keep children safe from exposure to the pollutants.

Pollution - How Is It Worse For Children?

Does your baby s skin taste too salty when you kiss him or her? Did he or she not poop after being born? These symptoms indicate cystic fibrosis in your baby, which is a condition that changes the way your body makes sweat and mucus. It also affects the functioning of the lungs and digestive system. The condition occurs from a flawed gene. If you have cystic fibroids, your mucus may be too thick or your sweat can be too salty. Heavy mucus clogging in your lungs may affect your ease of breathing. This is a serious and life-threatening disease, but it affects different people in different ways.

Causes
The gene known as CFTR is present in everybody. It makes a protein which controls the amount of salt and water that are moved in and out of the cells of the body. In case of cystic fibroids, the CTFR gene is broken, which occurs if you inherit two bad copies of the gene. A bad CFTR gene may lead your cells to make the wrong amount of water or salt. This makes the body incapable of getting sufficient oxygen and nutrients, as the body loses them via sweating.

Symptoms
Apart from the primary symptoms, several other symptoms are also likely due to cystic fibroids. The common symptoms which your child may experience are as follows:

Coughing up thick mucus, wheezing and shortness of breath
Sinus infections, pneumonia, or very frequent bronchitis
Development of polyps in the nose
Bulky, oily and foul-smelling stool
Low bone density, widening and rounding of the fingertips and weight loss
In later life, cystic fibroids may cause liver disease, gallstones or pancreatitis.
Treatment
There is no specific treatment for cystic fibroids. Several treatments are followed for relieving the symptoms and help patients feel better, breathe easier and have lesser infections or stomach problems.

Airway clearance technique can help you with breathing as the mucus from the lungs is cleared in the process. There are several ways to undertake airway clearance and special devices can be used for assistance.
Several inhaled drugs such as salt solutions, steroids and antibiotics are used in thinning the mucus, clearing the lungs and fighting infections.
Several medicines are used for fighting the inflammation and reducing swelling in the lungs.
In case your pancreas are not working properly, you can take enzyme pills for digesting proteins and fats for absorbing more nutrients from the food you take.
Vitamin A, E and D supplements provide the nutrients, which your intestine cannot absorb.
In case you experience the symptoms of cystic fibroids, you should visit a doctor immediately. This will allow you to go for an early diagnosis and effective treatment.

Cystic Fibrosis - Can it be Life Threatening?

Hearing loss is experienced by millions of people these days. Ageing is not the only factor that brings hearing impairment. The causes are many. Certain medications, continuous exposure to loud noise, genetic involvement, injury and some medical conditions may cause hearing loss.

There are quite a few myths that people have come to believe about hearing loss over the years. Since it is such a common phenomenon, here we take a look at the common myths surrounding hearing loss.

Myth no. 1: Hearing loss is exclusive to elderly.

Fact: As said before, hearing loss can be an outcome of various causes. Nearly half of the people suffering from the same are below the age of 55 years. No matter what your age is, you must always get your ears checked, especially if you are feeling that are you missing things.

Myth no. 2: Diagnosing hearing loss is easy.

Fact: Most people do not come to know about the condition until it gets worse. Also, your physician never really checks for hearing loss symptoms in a general check-up unless you ask for it specifically.

So, always get a check-up done, like you do for other probable diseases.

Myth no. 3: There's no effective solution for hearing loss.

Fact: Like there have been advancements in the medical field for everything else, there are aids available these days that improve your hearing and have finer adjustments for noise adaptation. Also, there are certain other procedures and surgeries that have proved to improve the condition in many.

So, seek help as soon as possible.

Myth no. 4: The sounds aren't loud enough; my ears are healthy and fine.

Fact: If there is a problem you're experiencing with hearing, you have got to accept that and get it treated. Avoiding a certain condition will only get things worse for you.

Also, hearing aids are no more a stigma. Ear aid devices have designs similar to earphones these days, which are comfortable enough to wear. Ignoring a medical condition or inability to accept the same would only do more harm instead of making things fine.


Common Myths About Hearing Loss

Necrotizing enterocolitis is a disease that causes inflammation of the tissues present in the intestines and results in damaged tissues. It initially affects the inner lining which ultimately results in thickening of the intestine. It may also lead to a hole in the abdomen resulting in bacteria entering the intestine, thus resulting in infection.

Symptoms-
The symptoms of necrotizing enterocolitis are:

You may experience symptoms of bloating in the abdomen
The abdomen may be discolored
You may experience diarrhea and vomiting
You may not feel hungry
There may be presence of blood in your stool
You may have a fever and constantly feel lethargic
Causes-
Lack of blood and oxygen in the intestine causes it to become weak and increases the chances of necrotizing enterocolitis. It may result if oxygen levels drop during a difficult delivery. If the intestines are weak, then they are at a higher risk of getting infected by bacteria. If you have an excessive supply of blood cells in your body or other stomach condition, then it may lead to this disease.

Diagnosis-
Usually the doctor conducts a physical exam to detect the symptoms of this disease. If babies are born with this condition, then they may suffer from weak immune system and problems in blood circulation. The doctor may also recommend x-rays to get detailed images of the intestine in order to probe for symptoms of inflammation and damage.

Treatment-
The treatment of the disease depends on few factors such as:

The child's age
How far has the disease progressed?
Health of your child
It is recommended to stop breastfeeding. Feed the baby through intravenous methods. The doctor may also recommend antibiotics and oxygen support if the child has breathing problems. In severe cases, the child may require surgery to treat this disease.

If the treatment occurs early, then the child may recover. However, complications such as a narrow and damaged bowel may persist. This may cause problems in nutrient absorption in the intestine leading to other disorders.


All About Necrotizing Enterocolitis

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