2024 GMS6402 Medical Pulmonary Physiology Practice Exam With Answers (79 Solved Questions)

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1/10GMS6402Medical Pulmonary Physiology ExamQuestions With 100% Correct Answers 20241.Thevastmajorityofthetotalsurfaceareaofthelungisfoundinthe:correct answer:alveoli2.Allofthefollowingcanbemeasuredviaspirometryexcept:correct answer:Functionalresid-ual capacity (FRC)3.Whatisthemusclethatisusedforexpiration?:correct answer:Externalobliques4.What is the transpulmonary pressure if pleural pressure is -7 cm H2O and alveolar pressureis -3 cm H2O?:correct answer: +4 cm H2O5.Lung compliance test indicates that a 3 cm H2O change in transpulmonary pressure generatesa 0.9 L change in lung volume. What is this patient's lung compliance?:correct answer: 0.3 L ofair/cm H2O6.Airway resistance across a set of airways is lowest under what conditions?-:correct answer:Airwayradiusislargeandlengthofthetubeissmall7.As the lungs fill with air and we move from a low lung volume to a higher lung volume,airway resistance will:correct answer: Decrease exponentially8.A patient performs an expiratory forced vital capacity maneuver. His FVC is 2 L and hisFEV1is1L.Basedonthesenumbers,youwouldpredictthispatientsuffersfromwhat?:correct answer: Obstructive lung disease

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2/109.When at sea level and breathing room air, the partial pressure of O2 in inspired air iswhat?:correct answer: 160 mmHg10.A patient begins to hyperventilate while sitting in a clinic on Miami Beach and breathingroom air. Over the ensuing 1 minute, his PaCO2 drops to 20 mmHg.What is his PaO2 at thatmoment in time?:correct answer: 125 mmHg11.With respect to the path of O2 diffusion,the proper order for the movement of oxygen acrossthe pulmonary capillary membrane is:correct answer: alveolar epithelium, interstitial space,capillary basement membrane, blood12.When a gas in the blood such as oxygen fails to reach diffusion equilib- rium with thealveolar air as it leaves the pulmonary capillary bed is said to be:correct answer: diffusionlimited13.Under normal physiological conditions,the max capacity of O2 that Hb can carry isapprox:correct answer::correct answer: 200 mL per day14.Whichofthefollowingwillincreasethecontentofarterialoxygen:correct answer:in-creased hemoglobin concentration15.Bloodgasanalysis:correct answer:partialpressureofoxygeninarterialblood=60mmHg,oxygen content = 18 mls O2/dL of blood.What is percent hemoglobin sat of patient?:correctanswer:90%16.Arterial blood gas is ordered and the following values are obtained; Hb = 17 g/dL,hemoglobin sat = 100%, PaO2 = 200 mmHg. What is content of total oxygen in arterial bloodsample?:correct answer: 23.38 mls O2/dL of blood

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3/1017.A patient's arterial blood gas indicates that her PaCO2 in 55 mmHg. What can you concludeabout her ventilation state?:correct answer: she is hypoventilating18.A post-op patient is still unconscious, but is receiving supplemental oxy- gen via a maskdevice. An ABG indicates that pH = 7.31, PaO2 = 155 mmHg, PaCO2 = 82 mmHg, HCO30 = 26mEq/L.What is true?:correct answer: Patient is acidotic HCO3- is normalPaCO2 is elevated19.With respect to the pulmonary circulatory system overall compliance of the systemis:correct answer: high20.Inthecaseofsevereembolism,overtimethegascompofalveoliwill become:correctanswer:150 mmHg O2; 0 mmHg CO221.Regardingpulmonaryedema(PE),whatistrue?:correct answer:PEischaracterizedbyincreased fluid in the interstitial spaceOxygen therapy can be effective during early stage PE PE ischaracterized by decreased Dl-Decreased gas diffusion with PE22.Inlatestagepulmonaryedema,theventilationtoperfusion(V/Q)ratio will:correctanswer:decrease23.In the Henderson-Hasselbalch equation,HCO3- is in the?:correct answer: Denominator24.According to the Henderson-Hasselbalch equation, if PaCO2 decreases to 20 mmHg, then

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