A male patient complains of physical weakness and fatigue. A blood test shows hi

Question

A male patient complains of physical weakness and fatigue. A blood test shows his hematocrit to be 30%. Which of the following diagnoses is the least likely to explain his symptoms? A) dietary iron deficiency B) kidney disease C) lung disease D) internal bleeding E) dreary vitamin B_12 deficiency Regarding the relationship between the rates of oxygen consumption/carbon dioxide production and alveolar ventilation, which of these statements is TRUE? A) In hyperventilation, alveolar P_CO2 can decrease to zero. B) A decrease in metabolism without a similar decrease in alveolar ventilation would result in hyperventilation. C) Increased ventilation without a similar increase in metabolism is called hyperventilation. E) In hypoventilation, alveolar P_CO_2 decreases below resting levels. Which of the following is NOT true regarding ventilation-perfusion inequality? A) It is caused by too little or too much blood flow relative to ventilation. B) It is caused by too little or too much ventilation relative to blood flow. Q It may result from increased alveolar dead space D) No inequality exists in normal lungs E) It is increased from normal in patients with emphysema A female has a blood test One ml. of her blood is drawn, spun in a centrifuge, and the plasma volume is measured and found to be 0 6 mL Two months later the same patient crinums to the doctor and. after doing another blood test, the doctor tells the patient that she has become anemic compared to her previous visit Which of the following is most likely to be the woman's hematocrit on the second visit? A) 100% B) 50% C) 70% D) 35% E)0.6mL If all other factors remain the same, which of these results in an increase in the amount of oxygen bound to hemoglobin'' A) increased plasma P_02 B) increased plasma [2.3 diphosphoglycerate] C) increased plasma [H+] D) increased plasma temperature E) increased plasma [carbon monoxide]

Explanation / Answer

Answer:

31) C. Lung disease

Normal hematocrit level in adult men ranges from 38.8 to 50 percent. Low hematocrit levels are the sign of deficiencies in nutrients such as iron, folate, or vitamin B-12, internal bleeding and kidney failure.

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