A female patient has presented with the following results for spirometry and plasma PO2. What is your diagnosis? Parameter Value Vital Capacity 3160 mL FEV1 2420 mL FVC 3020 mL Arterial PO2 100 mmHg Venous PO2 53 mmHg Group of answer choices COPD Pulmonary fibrosis Pulmonary edema Methemoglobinemia (causes a leftward shift in the oxygen-hemoglobin dissociation curve)
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The vital capacity (VC) is 3160 ml, which is within the normal range. The forced expiratory volume in one second (FEV1) is 2420 ml, which is also within the normal range. However, the ratio of FEV1 to FVC (FEV1/FVC) is 0.80, which is slightly lower than the normal Show more…
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A male patient has presented with the following results for spirometry and plasma PO2. What is your diagnosis? (Use your lecture notes to derive the normal range for these parameters. Also note that usually plasma O2 is determined by saturation percentage, not PO2, but humor me here). Parameter Value Vital Capacity 4340 mL FEV1 3310 mL FVC 4120 mL Arterial PO2 86 mmHg Venous PO2 34 mmHg Group of answer choices COPD Pulmonary fibrosis Pulmonary edema Methemoglobinemia (causes a leftward shift in the oxygen-hemoglobin dissociation curve)
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