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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.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.