Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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There are 20 feet of blood vessels in each square inch of human skin.
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The human body produces and destroys 15 million blood cells every second.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.
