5. The characteristics of microcirculation in late shock stage are: A: A. Increased forward resistance and significantly decreased perfusion and slower blood flow through the capillary network. B: B. Increased rear resistance and significantly increased perfusion and slower blood flow through the capillary network. C: C. The microvessels are paralytically dilated, no perfusion and blood flow through the capillary network. D: D. Continuous spasm and contraction of microcirculation.
5. The characteristics of microcirculation in late shock stage are: A: A. Increased forward resistance and significantly decreased perfusion and slower blood flow through the capillary network. B: B. Increased rear resistance and significantly increased perfusion and slower blood flow through the capillary network. C: C. The microvessels are paralytically dilated, no perfusion and blood flow through the capillary network. D: D. Continuous spasm and contraction of microcirculation.
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
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
A 52-year-old man is brought to the emergency department with severe chest pain. Angiography demonstrates a severe coronary occlusion. A thrombolytic agent is administered to reestablish perfusion. Which of the following does the thrombolytic agent activate?
A 52-year-old man is brought to the emergency department with severe chest pain. Angiography demonstrates a severe coronary occlusion. A thrombolytic agent is administered to reestablish perfusion. Which of the following does the thrombolytic agent activate?
94 The number of particles injected during a perfusion lung scan should be decreased for: （ ） A: the elderly B: those with a high risk of pulmonary embolus C: patients with severe pulmonary hypertension D: asthmatics
94 The number of particles injected during a perfusion lung scan should be decreased for: （ ） A: the elderly B: those with a high risk of pulmonary embolus C: patients with severe pulmonary hypertension D: asthmatics
The reliable variables reflecting tissue perfusion are () A: Central venous pressure B: Mean arterial pressure C: Systemic vascular resistance D: Venous oxygen saturation E: Pulmonary capillary wedge pressure
The reliable variables reflecting tissue perfusion are () A: Central venous pressure B: Mean arterial pressure C: Systemic vascular resistance D: Venous oxygen saturation E: Pulmonary capillary wedge pressure
The characteristic change of microcirculatory perfusion in stagnant<br/>hypoxia stage is() A: Both inflow and outflow are low and inflow B: Low inflow and high outflow and inflow C: Restored inflow and low outflow and inflow> outflow D: Both inflow and outflow are high and inflow> outflow E: Both inflow and outflow are high and inflow> outflow
The characteristic change of microcirculatory perfusion in stagnant<br/>hypoxia stage is() A: Both inflow and outflow are low and inflow B: Low inflow and high outflow and inflow C: Restored inflow and low outflow and inflow> outflow D: Both inflow and outflow are high and inflow> outflow E: Both inflow and outflow are high and inflow> outflow
The characteristic change of microcirculatory perfusion in ischemic hypoxia stage is() A: Low inflow and high outflow and inflow is lower than﹤outflow B: Both inflow and outflow are low and inflow C: High inflow and low outflow and inflow is more than> outflow D: Both inflow and outflow are high and inflow E: Both inflow and outflow are low and inflow > outflow
The characteristic change of microcirculatory perfusion in ischemic hypoxia stage is() A: Low inflow and high outflow and inflow is lower than﹤outflow B: Both inflow and outflow are low and inflow C: High inflow and low outflow and inflow is more than> outflow D: Both inflow and outflow are high and inflow E: Both inflow and outflow are low and inflow > outflow
The characteristic change of microcirculatory perfusion in ischemic<br/>hypoxia stage is() A: Low inflow and high outflow and inflow is lower than﹤outflow B: Both inflow and outflow are low and inflow C: High inflow and low outflow and inflow is more than> outflow D: Both inflow and outflow are high and inflow E: Both inflow and outflow are low and inflow > outflow
The characteristic change of microcirculatory perfusion in ischemic<br/>hypoxia stage is() A: Low inflow and high outflow and inflow is lower than﹤outflow B: Both inflow and outflow are low and inflow C: High inflow and low outflow and inflow is more than> outflow D: Both inflow and outflow are high and inflow E: Both inflow and outflow are low and inflow > outflow
Which<br/>one is not correct about ventilation/ perfusion ratio? () A: the<br/>normal value is 0.84 in resting state B: its<br/>decreasing means the increasing of physiologic dead space C: its<br/>value reaches to 3 at apex of lung D: its<br/>value decreases at inferior part of lung because there is not<br/>sufficient gas exchange there E: when<br/>it undergoes embolism in pulmonary artery, its value decreases
Which<br/>one is not correct about ventilation/ perfusion ratio? () A: the<br/>normal value is 0.84 in resting state B: its<br/>decreasing means the increasing of physiologic dead space C: its<br/>value reaches to 3 at apex of lung D: its<br/>value decreases at inferior part of lung because there is not<br/>sufficient gas exchange there E: when<br/>it undergoes embolism in pulmonary artery, its value decreases