A(n) ________ sinus rhythm means that each heartbeat has three distinct waves, a P wave, a T wave, and, between the two, a QRS complex where the Q is a downward deflection, the R is an upward deflection, and the S is a downward deflection following an R

You should attempt resuscitation if the fetus is at least ________ weeks or beyond unless death is obvious

A) 18 B) 20 C) 22 D) 24

You are on the scene of a car that hit a tree head on. The patient has a laceration to his forehead and a deformity to his left forearm. The car is a hybrid that runs on traditional as well as hydrogen gas. There is moderate front-end damage to the vehicle, but the airbags did not deploy. The patient was wearing a seatbelt. Which one of the following instructions is MOST appropriate in this

situation? A) "Let us deactivate the airbags by turning the engine off." B) "We will need to puncture the hydrogen tank to prevent an explosion." C) "Place a flare near the oil spill so that no one slips." D) "I need to have the battery cables disconnected."