A degenerative disorder affecting upper MOTOR NEURONS in the brain and lower motor neurons in the brain stem and SPINAL CORD. Disease onset is usually after the age of 50 and the process is usually fatal within 3 to 6 years. Clinical manifestations include progressive weakness, atrophy, FASCICULATION, hyperreflexia, DYSARTHRIA, dysphagia, and eventual paralysis of respiratory function. Pathologic features include the replacement of motor neurons with fibrous ASTROCYTES and atrophy of anterior SPINAL NERVE ROOTS and corticospinal tracts. (From Adams et al., Principles of Neurology, 6th ed, pp1089-94)
Accidents on streets, roads, and highways involving drivers, passengers, pedestrians, or vehicles. Traffic accidents refer to AUTOMOBILES (passenger cars, buses, and trucks), BICYCLING, and MOTORCYCLES but not OFF-ROAD MOTOR VEHICLES; RAILROADS nor snowmobiles.
Surgery necessary for a denture to rest on a firm base, free from marked osseous protuberances or undercuts, and devoid of interfering muscle attachments, excess mucoperiosteum, hyperplasias, and fibrous or papillary growths.
The artificial substitution of heart and lung action as indicated for HEART ARREST resulting from electric shock, DROWNING, respiratory arrest, or other causes. The two major components of cardiopulmonary resuscitation are artificial ventilation (RESPIRATION, ARTIFICIAL) and closed-chest CARDIAC MASSAGE.
A VACCINIA VIRUS vaccine used for immunization against SMALLPOX. It is now recommended only for laboratory workers exposed to SMALLPOX VIRUS. Certain countries continue to vaccinate those in the military service. Rare complications most often associated with older generation smallpox vaccines include VACCINIA, secondary bacterial infections, and ENCEPHALOMYELITIS. Because MONKEYPOX VIRUS and SMALLPOX VIRUS are both ORTHOPOXVIRUS and are closely related smallpox vaccines provide effective CROSS-PROTECTION against MPOX (MONKEYPOX) (https://www.cdc.gov/poxvirus/monkeypox/clinicians/smallpox-vaccine.html).