Tell whether the statements are true or false.
1. it is important to recognize a person who is in need of first aid from choking, from someone who is not.
2. when a person is unconscious and not breathing but has a pulse, he or she is in respiratory arrest.
3. more than 3,000 americans die each year from choking.
4. the heimlich maneuver was developed and introduced by dr. henry heimlich in 1974.

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.