The definition of a possum, or opossum, is a tree-dwelling nocturnal marsupial with fur and a prehensile tail. A small Australian mammal that lives in a tree and only comes out at night is an example of a possum. possum. possum.
More than two thirds of patients who die of anaphylaxis do so within the first: half hour. ____, a harsh, high-pitched inspiratory sound, occurs when swelling in the upper airway closes off the airway; the swelling can eventually lead to total obstruction. Stridor.
The major causes of anaphylaxis include medications, foods, drugs, latex, and insect bites or stings (wasps, yellow jackets, hornets, honeybees, and fire ants), and latex. The causes of anaphylaxis are divided into two major groups: