It is the sum of points assigned for five factors: level of consciousness,
cyanosis, Stridor, air entry, and retractions.
Stridor- the word is from the Latin,
strīdor- is a harsh, high-pitched, vibrating sound that is heard in respiratory tract obstruction.
It may arise Stridor, which consists of the appearance of a hoarse noise when breathing,
every time the child tries to catch air to breathe.