Cfrn Exam Review Questions And Answers, Graded A+

CFRN EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+ What is atmospheric pressure at sea level? - -760mmHg (or 760 torr) T/F: Atmospheric pressure and barometric pressure are essentially the same thing, just using a different unit of measure. - -True (think measuring same item in inches and then measuring it in cm) How many atmospheres (or ATMs) are at sea level? - -1 atmosphere/ATM at sea level What is barometric pressure? - -The combined weight of all atmospheric gases creating a force upon the surface of the earth. What is barometric pressure at sea level? - -29.92Hg According to Boyle's law, as altitude increases, barometric pressure ____, and gas in an enclosed space ____ as long as temperature remains ____. - -decreases, expands, constant T/F: As altitude increases, the measurement of Atmospheres (ATMs) also increases. - -False - decreases Quick math for calculating drop in ATMs until appx 5000/6000 feet altitude is that for every ____ increase in altitude, ATM goes down 5%. - -1500 feet What do the values of P1V1=P2V2 for Boyles law mean? - -P1 = starting ATM at the lowest altitude V1 = starting volume (ETT cuff, epigastrum, etc.) P2 = highest ATM based on highest altitude V2 = ending volume as impacted by highest altitude *constant temperature* Due to Boyle's law, what type of physiologic process/pain may you experience on descent? - - barotitus media - can't equalize ears (for test: only clinical issue that occurs on descent, sinusitis ascent) In barobariatrauma, according to boyles law, as altitude increases and atmospheric pressure drops - the drop causes ____ to be displaced off of phospholipids and ____ narcosis can occur. - -nitrogen, nitrogen T/F: Barobariatrauma acts like a decompression sickness, such as a scuba diver who rapidly ascends. - -True (would also be seen on ascent phase of flight) Barobariatrauma is more common in what type of population of patients? - -morbidly obese How is nitrogen narcosis from barobariatrauma treated? - -High flow O2 (preferably appx 15 minutes before flight if concerned this may present - morbidly obese, significant altitude changes) Barodentalgia (think boyles law) occurs in which phase of flight? - -ascent According to Charles's law, if pressure is constant, what is the relationship of volume and temperature? - -directly proportional (temp up = volume up, temp down = volume down) (*think car tires*) For every 1000' increase in altitude, how much will the temperature decrease? - -2 degrees celsius (if in meters - 150 meters ascent = 1 degree celsius temp decrease) Which gas law states the following: At a given mass and constant volume of gas, the pressure exerted on the sides of its container is directly proportional to its absolutely temperature. - -Gay-Lusaac's law How many gases make up atmospheric air? - -5 (nitrogen being the most, oxygen second) What gas law states the sum of the partial pressure in a mixture of gases will equal the total pressure? - -Dalton's law A mix of Dalton's and Boyle's law concepts would conclude that as altitude ______, atmospheric pressure decreases. Even though the pressure changes, the gas stays at the ____ proportions. Therefore, if increasing altitude, the partial pressure of oxygen (amount available in atmosphere) will ___. - -increases, same, decrease How do you calculate a partial pressure of ox