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Physiology Exam Question And Answers
During ascent does gas expand or contact? - correct answers ✅Expand - Boyles Law During descent does gas contract or expand? - correct answers ✅Contact - Boyles Law Climb 100m will cause temperature to? - correct answers ✅Drop 1-degree Celsius - Charles' law For every 1,000 ft temperature will drop? - correct answers ✅ 2 degrees Celsius - Charles's law how to calculate celsius to fahrenheit - correct answers ✅(°C x 1.8) + 32 = °F How to convert Fahrenheit to Celsius - correct answers ✅(°F -
- / 1.8 = °C
Physiology Exam Question And Answers
the temperature outside is 18 °C. What would that equal in Fahrenheit - correct answers ✅(18 * 1.8) + 32 (32.4) + 32= 64.4 °F You're feeling ill and your body temperature is 101.3 °F. What is the temperature in Celsius? - correct answers ✅(101.3 - 32) /
(69.3) / 1.8= 38.5 °C When you charge an oxygen tank, and the tank gets hot; that is an example of what gas law - correct answers ✅Charles' Law Does gas volume expand or shrink as temperature increases?
Physiology Exam Question And Answers
transfer of oxygen from blood into the cells. Which gas law is this? - correct answers ✅Graham's Law gas bubbles coming out of exposed grey matter when at altitude is an example of which gas law? - correct answers ✅Graham's Law Which gas explains why you get hypoxic when you increase in altitude? - correct answers ✅Dalton's Law Dalton's Law can be remembered by the phrase "Daltons Gang" because? - correct answers ✅Oxygen molecules that were "ganged up" at lower altitudes spread apart at higher altitudes, making less oxygen available for breathing. Ballon, barotrauma, equipment issues, air filled medical device expansion, AGE, and pneumocephalus = which gas law? - correct answers ✅Boyle's Soft tissues swelling at altitude
Physiology Exam Question And Answers
"________ Gang" which gas law? - correct answers ✅Dalton's Charging Charles - correct answers ✅Charles' law Grey Matter = Which gas law? - correct answers ✅Graham's Heineken decompression sickness, the bends = which gas law? - correct answers ✅Henry's Barotitis media - correct answers ✅ear pain or ear block results from failure of the middle ear space to ventilate when going from low to high atmospheric pressure (descent.) Treat with Valsalva maneuver or with Oxymetazoline (Afin)
Physiology Exam Question And Answers
feet MSL is 162 torr, what would the partial pressure of oxygen be at this altitude? A) 45 torr B) 22 torr C) 34 torr D) 14 torr - correct answers ✅C) 34 torr Dalton's law states that as we ascend in altitude, the concentration of oxygen remains the same. However, because of the decreased barometric pressure, the partial pressure of oxygen decreases as altitude increases. At sea level: 760 torr x 0.21 = 159 torr 40,000 feet: 162 torr x 0.21 = 34 torr barobariatruama - correct answers ✅Barotrauma is tissue injury caused by a pressure-related change in body compartment gas volume.
Physiology Exam Question And Answers
Barobaria trauma is best prevented by... - correct answers ✅Pre oxygenation- Caused by a large/sudden release of nitrogen from the adipose tissues of the body upon decompression. Pts with decreased Vt and FRC can not "blow off" the excess nitrogen fast enough. Signs of barobariotruama during flight transport - correct answers ✅-neurological symptoms as a result of a rapid release of nitrogen from -disoriented -hallucinations -short-term memory loss -difficult in concentrating who is at greater risk of barobariotruama during flight transport? - correct answers ✅-overweight or obese patients -pregnant patients -pediatrics
Physiology Exam Question And Answers
DEATH-factors effecting flight stressors - correct answers ✅D - Drugs E - Exhaustion A - Alcohol T - Tobacco H - Hypoglycemia Night vision is decreased beginning at how many feet? - correct answers ✅5,000 ft You have a patient on a non-rebreather mask at 0.5 Fi02 and you are at sea level. You will be flying to an altitude with a torr of 500. What will be the oxygen requirement at this pressure?
- correct answers ✅0.5 x 760 / 500 = 0.76 Fi02 required for ascent (76% oxygen) pneumocephalus - correct answers ✅the presence of air in the intracranial space
Physiology Exam Question And Answers
Boyle's Law what is the pressure value at sea level? - correct answers ✅760 torr or mmHg (1 ATM) what is the pressure value at 10,000 ft - correct answers ✅ 523 torr or mmHG what is the pressure value at 18,000 ft - correct answers ✅ 380 torr or mmHg (1/2 ATM) hypoxic hypoxia - correct answers ✅"Not enough oxygen in the air" AKA altitude hypoxia inadequate ventilation or reduction in the P)2 and is characterized by a lack of oxygen entering the blood. What can cause hpoxic hypoxia? - correct answers ✅Increase in altitude
Physiology Exam Question And Answers
At how many feet and what presentage does oxygen saturation start to reduce? - correct answers ✅-The blood oxygen saturation 98% at sea level --reduced to 87% at 10, ft and -60% at 22,000 ft. Oxygen Adjustment Calculation - correct answers ✅(FiO2 x Pressure on the ground or where you're at) P1 /pressure you're flying to P histotoxic hypoxia - correct answers ✅The cells are unable to use oxygen. There is plenty of oxygen available, and it can bind to hemoglobin, but the tissues cannot access it. "poisoning" What causes histotoxic hypoxia? - correct answers ✅results from poisoning or metabolic disorders such as:
Physiology Exam Question And Answers
cyanide, alcohol, carbon monoxide, nitroglycerin, sodium nitroprusside (Nipride) Sign of histotoxic hypoxia - correct answers ✅Cherry red skin. Stagnant Hypoxia - correct answers ✅"Blood isn't moving" Failure to transport oxygenated blood. Reduced cardiac output or pooling of blood In flight medicine, stagnant hypoxia results from? - correct answers ✅Venous pooling in the patient during accelerated maneuvers, such as steep turns and other maneuvers that increase the gravitational load on the aircraft. Or blood pooling in the lower extremities of patients and crew members who sit in an aircraft for extended periods.
Physiology Exam Question And Answers
"anemic" Causes of hypemic hypoxia - correct answers ✅carbon monoxide poising, hemorrhage, anemia, blood loss, excessive smoking, use of nitrite, and sulfa drugs, sickle cell disease. Hypemic hypoxia will cause what kind of shock? - correct answers ✅Hypovolemic shock What is a skin of hypemic shock? - correct answers ✅Pale skin
Physiology Exam Question And Answers
Stages of hypoxia - correct answers ✅Indifferent Compensatory Disturbance Critical Indifferent Stage of Hypoxia - correct answers ✅Full reasoning abilities, some loss of night vision slightly increased HR and RR, decreased night vision experienced between sea level and 10,000 ft but it may manifest at altitudes as low as 5,00 ft. Compensatory Stage of hypoxia - correct answers ✅Increased HR, ventilations, slowed judgement
- increased BP occurs, impairment of task performance occurs
Physiology Exam Question And Answers
at how many feet does the second stage of hypoxia start? - correct answers ✅-compensatory stage, which occurs from
- 10,000 to 15,000 ft. How does the body react during the compensatory stage of hypoxia? - correct answers ✅-the body attempts to protect itself against hypoxia. -Increases in blood pressure, heart rate, and depth and rate of respiration occur. Efficiency and performance of tasks that require mental alertness become impaired in this stage. The third stage of hypoxia and at how many feet does this occur? - correct answers ✅-disturbance stage -15,000 and 20,000 ft.
Physiology Exam Question And Answers
How does your busy react during the disturbance stage of hypoxia? - correct answers ✅-dizziness, sleepiness, tunnel vision, and cyanosis. -Thinking becomes slowed, and muscle coordination decreases. At how many feet does the four stage of hypoxia occur - correct answers ✅-critical stage -20,000 and 30,000 ft How does the body react during the critical stage of hypoxia - correct answers ✅-marked mental confusion -incapacitation -unconsciousness, usually within a few minutes. What is the most important stage of hypoxia to recognize - correct answers ✅The indifferent stage because you can still fully think
