Most common cause of empyema is: (AIIMS Nov 10)
Complications of pneumonia
1). Respiratory failure : Type 1 respiratory failure is relatively common.
2). Hypotension may be due to a combination of dehydration and vasodilatation due to sepsis.
3). Atrial fibrillation is quite common, particularly in the elderly.
4). Pleural effusion
5). Empyema is pus in the pleural space.
6). Bacterial pneumonia are the most common cause of empyema.
7). Lung abscess is a cavitation area of localized, suppurative infection within lung.
8). Pericarditis and myocarditis may also complicate pneumonia.
9). Jaundice: This is usually cholestatic, and may be due to sepsis or secondary to antibiotic therapy (particularly flucloxacillin and co-amoxiclav).
11). Septicemia and septic shock.