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Lower respiratory tract infection (LRTI) is a term often used as a synonym for pneumonia but can also be applied to other types of infection including lung abscess and acute bronchitis. Symptoms include shortness of breath , weakness, fever , coughing and fatigue. [ 3 ]
The lower respiratory tract consists of the trachea (windpipe), bronchial tubes, bronchioles, and the lungs. [6] Lower respiratory tract infections (LRIs) are generally more severe than upper respiratory infections. LRIs are the leading cause of death among all infectious diseases. [7] The two most common LRIs are bronchitis and pneumonia. [8]
Emergency department visits for flu and the respiratory syncytial virus, or RSV, are very high. ... Maybe they have a bacterial infection and need antibiotics. ... you will have to set a lower bar ...
Unlike other upper respiratory infections, RSV is more likely to cause new onset wheeze in adults. [3] About 25% of infected adults will progress to significant lower respiratory tract infections, such as bronchitis or tracheobronchitis. [19]
Diagnosis, like with any infection, relies on the detection of the infectious cause. With viral pneumonia, samples are taken from the upper and/or lower respiratory tracts. [3] The samples can then be run through polymerase chain reaction (PCR), allowing for amplification of the virus as that allows better detection if present in the sample. [4]
Because influenza is similar to other viral respiratory tract illnesses, laboratory diagnosis is necessary for confirmation. Common sample collection methods for testing include nasal and throat swabs. [1] Samples may be taken from the lower respiratory tract if infection has cleared the upper but not lower respiratory tract.