MRSO Exam 3 with A Grade Solutions

MRSO Exam 3 with A Grade Solutions Which of the following are physiologic factors that occur from an anaphylactic reaction? Select all that apply. a. Elevated creatinine levels b. Vasodilation c. Bronchial smooth muscle contraction d. Increased vascular permeability - Answer-b, c, d A non-emergent quench can take approximately how long? a. 1 minute b. 20 seconds c. 5-15 mins d. 2- 4 mins - Answer-c. 5-15 mins An emergent quench will take approximately 1 minute. The roaring sound heard during a quench is caused by what? a. The sound of the ignition of the coils of wire used to heat the cryogen b. The massive volume of helium boiling off through the quench vent c. If a loud noise is heard, something is going wrong and you should evacuate. d. The sound of the system shutting down. - Answer-b. The massive volume of helium boiling off through the quench vent Which of the following will reduce the risk of patient burning in a pacing wire? a. Place pacing wire outside RF field b. Advance patient into scanner head first c. Don't scan patient d. Place an ice pack on patient's chest - Answer-a. Place pacing wire outside RF field A patient has removed a vagus stimulator with the leads left in, and is having a MR knee performed with the transmit-receive coil. In terms of patient heating, is it safe to scan? a. No b. Yes, only with heat sink c. Yes d. Yes, only if that patient is less than 200lb. - Answer-c. Yes