Convert the decimals to fractions. 0.045 =

The AV node's intrinsic firing rate is:

a. 60–100 beats per minute. b. 40–60 beats per minute. c. 20–40 beats per minute. d. 10–20 beats per minute.

A 911 call was placed for a 3-year-old child with difficulty breathing. On scene you note that the child is upright with slight stridor upon inspiration. He is alert and breathing at a rate of 30 breaths per minute. His skin is warm and dry, and his radial pulse strong and regular. His breath sounds are clear and equal. His mother states that he has been fine all day until 15 minutes ago when he

was playing with friends in the playroom and suddenly started having difficulty breathing. As an EMT, you should suspect which of the following conditions? A) Foreign body airway obstruction B) Epiglottitis C) Croup (laryngotracheobronchitis) D) Bronchial asthma