Lung Function Test

The lung function test is otherwise known as the pulmonary function test (PFT). It includes various tests that help to check the proper functioning of the lungs. The most common test is spirometry. It measures the capability of the lungs to hold air. It is used for screening diseases that affect lung volumes. The other tests are lung volume testing, diffusing capacity test, and exercise testing. Lung volume testing measures the volume of air present in the lungs. The diffusion capacity test measures the volume of oxygen entering the bloodstream. Exercise testing helps in evaluating the cause of shortness of breath.

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All the answers published in this website are written by Verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

How much exposure of sanded grout is considered serious?

Query: Hello doctor, The query is about sanded grout exposure. I am quite concerned about my girlfriend’s exposure to silica dust. We were doing a home renovation. I left for about 1.5 hours while she was removing tile in a kitchen. When I had come back I saw she was removing grout with a grinder an...  Read Full »


Dr. Prabhu Prasad N. C

Answer: Hi, Welcome to icliniq.com. Looking at the history, it is quite a high-level exposure and it can cause some kind of pneumonitis feature called hypersensitivity pneumonitis or toxic dust syndrome. If she develops symptoms of a cough, breathlessness, better to get a CT thorax to see her lungs and if...  Read Full »

What is the reason for my breathlessness while climbing the stairs?

Query: Hello doctor, I have been suffering from a problem of breathlessness when I climb stairs. I got an angiography done two years back. The concerned cardiologist said there is no problem except for a sluggish blood flow. He recommended Ecosprin for two months. But the problem persists.  Read Full »


Dr. Amiya Kumar Chattopadhyay

Answer: Hello, Welcome to icliniq.com. For your breathlessness when climbing the stairs, I suggest you do a PFT (pulmonary function test) to evaluate the lung function as sometimes this type of problem may be due to a lung problem. For further queries consult a cardiologist online --> https://icliniq.co...  Read Full »

How to diagnose the cause of shortness of breath and extreme fatigue?

Query: Hi doctor, My mom, who is 76 years old, has a transferrin saturation level of 17. She has been scheduled for iron infusion therapy. She feels extremely tired, short of breath, and has arthritic pain. She cannot tolerate oral iron. She has had iron infusions before but does not last long. What to do...  Read Full »


Dr. Sadaf Mustafa

Answer: Hello, Welcome to icliniq.com. I am trying to understand whether she has iron deficiency anemia or anemia of chronic disease, or myelodysplastic syndrome. Did she ever get a bone marrow biopsy or hemoglobin electrophoresis? Can you share her latest complete blood count (CBC) before and after ...  Read Full »

What is the treatment for forced breathing and persistent cold and cough?

Query: Hello doctor, I recently had issues with a somewhat forced breathing and a cold or a cough that is not clearing up from the last two to three months. The doctor sent me for a pulmonary test, the results of which I have attached. What do they mean? I have also attached my latest blood reports. Can yo...  Read Full »


Dr. Salah Saad Shoman

Answer: Hello, Welcome to icliniq.com. I have gone through both the reports (attachment removed to protect patient identity). Your lung function tests detected a decreased diffusing capacity which can be due to either a vascular disease that decreases the blood supply to a portion of the lung or parenchyma...  Read Full »

Does smoking cigarettes cause shortness of breath and increased heart rate?

Query: Hi doctor,I suffered from bronchitis, four years ago. Since it got cured, I smoked cigarettes for two years and gradually stopped smoking. Recently, I have high blood pressure, increased heart rate, and I have shortness of breath. I started running 2 km daily. Why am I having all these symptoms?  Read Full »


Dr. Goswami Parth Rajendragiri

Answer: Hi, Welcome to icliniq.com. As you have a history of smoking, smoking-induced left ventricular hypertrophy, emphysema, bronchitis, pulmonary congestion, etc., can lead to such presentation. You need to do the following investigations: Auscultation. Chest x-ray. 2D echocardiography or...  Read Full »

How long should my mother stay on a ventilator?

Query: Hello doctor,My 98 year old mother is on a ventilator. Yesterday, they did a T-piece trial and for an hour everything looked good. But, the blood gases showed 61% Co2 and her last blood gas was 51% while on CPAP. They are going to do another test in a few days. The head RT said because of that Co2 s...  Read Full »


Dr. Anshul Varshney

Answer: Hi, Welcome to icliniq.com. We are here to help you. It all depends on the primary cause leading her to a ventilator. In case it is an acute pneumonia or bronchitis, once the infection settles, then the pCo2 levels settle automatic and the lung function will improve. In fact, if she is conscious an...  Read Full »

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