Which two proteins are critical for the effective function of the G1 checkpoint?

A 2-year-old male fell into a swimming pool and was submerged for about 2 minutes. The child is unresponsive, cyanotic, apneic, and pulseless. A firefighter who first responded on an engine is performing CPR. You are not able to quickly obtain vascular access, but you are able to place an endotracheal tube. EKG shows a sinus bradycardia with a rate of 32 . You should:

a. start an intraosseous line immediately. b. administer 0.01 mg/kg epinephrine 1:10,000 down the endotracheal tube. c. administer 0.1 mg/kg epinephrine 1:1000 down the endotracheal tube. d. administer 0.02 mg/kg atropine down the endotracheal tube.

A 16-year-old male is complaining of dizziness and shortness of breath. He states that he was tackled hard at football practice yesterday and has experienced left-sided rib pain while breathing ever since. You should:

A) treat for shock. B) administer aspirin for the pain. C) ask the patient to smile to assess for facial symmetry. D) administer oxygen if allowed.