Spirometry is usually adequate for preoperative risk assessment and stratification. It is also often adequate for rotated obstructive lung disease, such as emphysema or asthma. However, when a patient's symptoms or clinical history cannot be explained by findings on spirometry or when multiple coexisting processes (e.g., dyspnea with both heart and lung disease) are present, then further testing is usually warranted.
Phlegm is a mucus-like substance produced by the lower airways, such as the lungs and the respiratory system leading to the lungs, not by the nose and sinuses, which produce the mucus that streams out of or clogs up your nose. You may not notice phlegm unless you cough it up as a symptom of bronchitis or pneumonia.As is the case with mucus, phlegm that has a color such as green or yellow may indicate infection. Any time you see blood in the phlegm you cough up, you should seek medical attention. 3.ou may not notice phlegm unless you cough it up as a symptom of bronchitis or pneumonia. As is the case with mucus, phlegm that has a color such as green or yellow may indicate infection. Any time you see blood in the phlegm you cough up, you should seek medical attention.
While chronic phlegm does become a serious cause for worry for many, the truth is that there are a number of reasons for phlegm or excessive mucus in throat. For some, it may just be a case of morning reflux, with no excessive production of flem during the rest of the day.emoving the root cause is the most effective way to reduce phlegm in throat. 1  Avoiding things that trigger phlegm formation in the throat such as smoking and irritants in the air (by avoiding places that are dust prone), and trying not to not strain the vocal cords by screaming or yelling helps reduce excess phlegm.