Cfrn Exam Review Questions And Answers, Graded A+/ Verified.

CFRN EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED. What is the worst stressor in transport? Vibration. Physical effects on crew & patient plus affects ECG and increases ETCO2. Increase padding to decrease vibration Gravitational forces cause what? Pooling of blood Negative impacts on transport Fatigue Dehydration Cold, high, & dry What stressor impacts physical assessment most? Noise Vision Impairment Night vision affected as early as 5000 feet MSL Avoid inside light and use supplemental O2 Most common reason for patient death during flight? Cardiac tamponade Tension pneumothorax Hypovolemia Fuel vapors cause what? Eye irritation AMS Nausea Flicker Vertigo Sunlight through wind milling propeller can cause seizures. Cover patient's eyes to prevent. Occurs @ 4- 20Hz Barotitis Media Obstruction of eustachian tubes cause pain, tinnitus, vertigo on descent. Ask the patient to yawn or swallow. Barogastralgia Unclamp NG/OG tube during ascent to relieve pressure Barodontalgia/aerodontalgia Warm compresses to relieve dental pain on ascent What happens to an untreated PTX during ascent? Any untreated PTX will expand on ascent and may needle needle decompression or chest tube placement Boyle's law Barosinusitis Obstruction of the sinus passages may cause pain or epistaxis on ascent. Use valsalva maneuver to equate pressure Boyle's "Balloon" Law Temperature is constant Trapped gas expands with altitude (your pressure will decrease with altitude) i.e. air splints, chest tubes, ET cuff pressure, hollow organs (insert NG/OG), increase IVF rate, IABP purge -insert chest tube for rotor wing -no air transport for pneumocephalus air in the cranial cavity -bi-valve a cast that is 7 days old -no air splints Henry's Law "Heineken" Law N2 bubbles cause decompression sickness "the bends" The amount of gas dissolved in a solution is directly proportional to the pressure of gas over a solution. The more concentrated the gas that comes in contact with a liquid is the more that gas will be dissolved in the liquid or if the partial pressure is twice as high twice as many molecules will hit the surface of