PHTLS Study Set with Revision Questions and Answers

Kinematicsthe branch of mechanics that deals with the motion of objects without reference to the forces that cause the motion Pre-eventincludes all of the events that preceded the incident Eventbegins at the time of impact between one moving object and a second object Posteventinformation gathered about the crash and pre-event phase is used to assess and manage the patient Newtons 1st law of motionstates that a body at rest will remain at rest, and a body in motion will remain in motion unless acted on by an outside force Law of conservation of energy/newton's 2nd law of motionenergy can neither be created nor destroyed but can be changed in form Newtons 3rd law of motionfor every action or force there is an equal and opposite reaction Kinetic energya function of an objects mass and velocity Five types of mvcsfrontal, rear, lateral, rotational, rollover Don juan syndromethe pattern of injury in falls occurring feet first Hypovolemic shockprimarily hemorrhagic in the trauma patient and is related to loss of circulating blood cells with oxygen-carrying capacity and fluid volume Distributive shockrelated to abnormality in vascular tone arising from several different causes Cardiogenic shockrelated to interference with the pump action of the heart Class i hemorrhagerepresents loss of up to 15% of blood volume in the adult Class ii hemorrhagerepresents a loss of 15-30% blood volume Class iii hemorrhageloss of 30-40% of blood volume