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Since pneumonia can take a dangerous turn, it's important to know the earliest signs of it. Dr. Zweig says that, typically, pneumonia starts as a regular viral upper respiratory infection.
A pulmonary hematoma is a collection of blood within the tissue of the lung. It may result when a pulmonary laceration fills with blood. [ 1 ] A lung laceration filled with air is called a pneumatocele . [ 1 ]
It is the most common bacterial pneumonia found in adults, the most common type of community-acquired pneumonia, and one of the common types of pneumococcal infection. The estimated number of Americans with pneumococcal pneumonia is 900,000 annually, with almost 400,000 cases hospitalized and fatalities accounting for 5-7% of these cases.
People may become infected with pneumonia in a hospital; this is defined as pneumonia not present at the time of admission (symptoms must start at least 48 hours after admission). [ 85 ] [ 84 ] It is likely to involve hospital-acquired infections , with higher risk of multidrug-resistant pathogens.
Pneumonia as seen on chest x-ray. A: Normal chest x-ray.B: Abnormal chest x-ray with shadowing from pneumonia in the right lung (left side of image).. Hospital-acquired pneumonia (HAP) or nosocomial pneumonia refers to any pneumonia contracted by a patient in a hospital at least 48–72 hours after being admitted.
Some patients have an underlying problem which increases their risk of infection. Some risk factors are: Obstruction - When part of the airway leading to the alveoli is obstructed, the lung cannot eliminate fluid; this can lead to pneumonia. One cause of obstruction, especially in young children, is inhalation of a foreign object such as a ...
Pneumococcal infection is an infection caused by the bacterium Streptococcus pneumoniae. [ 1 ] S. pneumoniae is a common member of the bacterial flora colonizing the nose and throat of 5–10% of healthy adults and 20–40% of healthy children. [ 2 ]
Other estimates indicate 10%, or 2 million, patients a year become infected, with the annual cost ranging from $4.5 billion to $11 billion. [70] In the US, the most frequent type of hospital infection is urinary tract infection (36%), followed by surgical site infection (20%), and bloodstream infection and pneumonia (both 11%). [47] [needs update]