Patients with pulmonary ventilation dysfunction first develop CO2 retention and then hypoxia.
举一反三
- The pathogenesis of dyspnea in left heart failure? () A: Hypotension. B: Congestion of systemic circulation. C: Myocardial ischemia and hypoxia. D: Increased blood volume. E: Pulmonary congestion and pulmonary edema
- Which of the following about ventilation/perfusion ratio is wrong? A: normal value in quiet state is 0.84 B: decreasing of ventilation/perfusion ratio means that the alveolar ineffective cavity increases C: ratio in pulmonary bottom is the smallest D: in pulmonary embolism, the ratio increases
- The pathogenesis of dyspnea in left heart failure?() A: Hypotension. B: Congestion of systemic circulation. C: Myocardial ischemia and hypoxia. D: Increased blood volume. E: Pulmonary congestion and pulmonary edema F: Activation of renin-angiotensin-aldosterone system
- Which of the following is primary function of mechanical ventilation? A: Maintain alveolar ventilation and correct hypoxemia B: Increase carbon dioxide C: Increase blood volume D: Maintain pulmonary blood flow
- The<br/>situation of AB>SB<br/>means ( ) A: HCO3-<br/>retention B: Excessive<br/>HCO3- excretion C: CO2<br/>retention D: Excessive<br/>CO2 expiration E: Fixed<br/>acid retention