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emphysema is a condition of loss of elasticity of the alveoli where exchange of oxygen and Co2 occurs. The alveoli cannot efficiently exchange oxygen for Co2 so Co2 builds up in the blood. It is usually caused by chronic smoking but can be caused by other diseases/conditions.
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What is normal arterial po2?
80-100
Is it reasonable that Brianna's arterial PO2 is the same as Christopher's?
It is not reasonable for Brianna's arterial PO2 to be the same as Christopher's unless they have the same physiological conditions and are breathing the same air. Arterial PO2 levels can vary depending on factors like altitude, lung function, and overall health.
What is PO2 in blood?
PO2 in blood is the amount of gases in your blood. In medical terms, this is commonly called the Alveolar-arterial.
Is pao2 and po2 the same?
Yes, PaO2 (partial pressure of oxygen in arterial blood) and pO2 (partial pressure of oxygen) are the same. PaO2 specifically refers to the measurement of oxygen in arterial blood, while pO2 is a more general term referring to the partial pressure of oxygen in any context.
In metabolic alkalosis does the PO2 decreases?
The PO2 does decrease in metabolic acidosis, Similarly, there is a decrease in the pH and HCO3 levels. Metabolic acidosis is a condition where the body is producing too much acid.
Explain the way anatomical shunt through the bronchial circulation causes an PO2 difference between alveolar gas and arterial blood.?
because it wants toExplain the way anatomical shunt through the bronchial circulation causes an PO2 difference between alveolar gas and arterial blood.? In: Circulatory System [Edit categories]
How does exercise affect pO2 in the muscle cell?
Arterial po2 will not change because it's almost at maximum already. Venous po2 will decrease due to increased oxygen consumption by respiring muscle. Venous and arterial pCo2 will actually either stay the same or fall due to the increased ventilation stimulated by the increased Co2 production by respiring muscles. The increased pCO2 is detected by central and peripheral chemoreceptors and leads to increased ventilation, resulting in increased ventilation - causing pCo2 to remain normal or decrease. This mechanism cannot be used to explain the ventilation increase in light exercise because pCo2 hardly rises at all during light exercise, therefore the chemoreceptors may not be responsible for the mechanism resulting in increased ventilation,
What is physiological shunt?
Is a mixtures of oxygenated blood with some deoxygenated blood. It results in reduction of arterial PO2 by 2mmHg and reduction of arterial oxygen saturation by 0.5% compared to oxygenated blood coming from alveolar capillaries
What causes PO2 to decrease?
A decrease in PO2 can occur due to factors such as high-altitude exposure, lung diseases like COPD or pneumonia, breathing difficulties, or oxygen deficiency in the air. Inadequate ventilation, poor oxygen exchange in the lungs, or reduced oxygen-carrying capacity of the blood can also lead to decreased levels of PO2.
How does emphysema affect arterial blood gases?
O2 sat on room air or arterial blood would be lower than normal. CO2 levels would be higher.
What is hypoxic threshold?
When the aterial PO2 drops and becomes around 60 to 70 mm Hg, an increase in ventilation occurs. This is caused by a low PO2 in the blood and is detected by the carotid bodies (chemoreceptor), because the aortic and central chemoreceptors do not detect a change in arterial PO2
How would the partial pressures of O2 and CO2 change in an exercising muscle?
Although venous levels change, arterial Pco2 and Po2 levels remain surprisingly constant during exercise. In fact, Pco2 may even decline to below normal and Po2 may rise slightly because of the efficiency of the respiratory adjustments. Increased blood flow does not cause a change in gas pressures. the only way to change gas pressures is by altering atmospheric pressure, ie. scuba diving, or changing elevation. Partial pressure of any blood born gas is always directly proportional to atmospheric pressure as evidenced by Dalton's law of partial pressures. However in exercising muscle metabolic processes temporarily increase Pco2 and decrease Po2 until equalized by sufficiently oxygenated arterial blood. So the short answer to your question is that intramuscular Pco2 pressures would increase and Po2 would decrease, but the partial pressures in the blood would remain constant.
