First Aid-Physiology Flashcards by Sunny Maj

Flashcards in First Aid-Physiology Deck (7)

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What happens when Alveolar partial pressure of oxygen falls?

Hypoxic vasoconstriction which diverts blood to other well ventilated areas for better gas exchange

How can COPD lead to cor pulmonale?

COPD causes hypoxic vasoconstriction which leads to pulmonary hypertension and eventual cor pulmonale as the the right ventricle dilates because it is pumping against greater pressures

Alveolar gas equation

PAlveolar= PIO2 (150mmHg) - Parterial CO2/ R

A-a gradient

The amount of oxygen that can be transferred from alveolar spaces to arterial spaces....the lower the difference the better the transfer (better diffusion)
normal is 10-15 mmHg

Widened A-a gradient causes of hypoxemia?

means that oxygen is getting into the lungs but is not being transferred to the blood
1. V/Q mismatch
2. Right to Left Shunting
3. diffusion limitation (fibrosis)

What is Hypoxemia? Hypoxia?

1. Hypoxemia--is decreased partial pressure of oxygen in the blood
2. Hypoxia-- is decreased delivery of oxygen to the tissues

Normal A-a gradient of hypoxemia?

means that the oxygen is not getting in. But transfer from alveoli to blood is still efficient
1. high altitudes
2. HypOventilation

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Pulmonary > First Aid-Physiology > Flashcards

What happens when Alveolar partial pressure of oxygen falls?

Hypoxic vasoconstriction which diverts blood to other well ventilated areas for better gas exchange

How can COPD lead to cor pulmonale?

COPD causes hypoxic vasoconstriction which leads to pulmonary hypertension and eventual cor pulmonale as the the right ventricle dilates because it is pumping against greater pressures

Alveolar gas equation

PAlveolar= PIO2 (150mmHg) - Parterial CO2/ R

A-a gradient

The amount of oxygen that can be transferred from alveolar spaces to arterial spaces....the lower the difference the better the transfer (better diffusion)
normal is 10-15 mmHg

Widened A-a gradient causes of hypoxemia?

means that oxygen is getting into the lungs but is not being transferred to the blood
1. V/Q mismatch
2. Right to Left Shunting
3. diffusion limitation (fibrosis)

What is Hypoxemia? Hypoxia?

1. Hypoxemia--is decreased partial pressure of oxygen in the blood
2. Hypoxia-- is decreased delivery of oxygen to the tissues

Normal A-a gradient of hypoxemia?

means that the oxygen is not getting in. But transfer from alveoli to blood is still efficient
1. high altitudes
2. HypOventilation

Decks in Pulmonary Class (2):

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First Aid-Physiology Flashcards Preview

Pulmonary > First Aid-Physiology > Flashcards

What happens when Alveolar partial pressure of oxygen falls?

Hypoxic vasoconstriction which diverts blood to other well ventilated areas for better gas exchange

How can COPD lead to cor pulmonale?

COPD causes hypoxic vasoconstriction which leads to pulmonary hypertension and eventual cor pulmonale as the the right ventricle dilates because it is pumping against greater pressures

Alveolar gas equation

PAlveolar= PIO2 (150mmHg) - Parterial CO2/ R

A-a gradient

The amount of oxygen that can be transferred from alveolar spaces to arterial spaces....the lower the difference the better the transfer (better diffusion)normal is 10-15 mmHg

Widened A-a gradient causes of hypoxemia?

means that oxygen is getting into the lungs but is not being transferred to the blood1. V/Q mismatch2. Right to Left Shunting3. diffusion limitation (fibrosis)

What is Hypoxemia? Hypoxia?

1. Hypoxemia--is decreased partial pressure of oxygen in the blood2. Hypoxia-- is decreased delivery of oxygen to the tissues

Normal A-a gradient of hypoxemia?

means that the oxygen is not getting in. But transfer from alveoli to blood is still efficient1. high altitudes2. HypOventilation

Key Links

Subjects

Company

Find Us

Brainscape's Knowledge Genome^TM

The amount of oxygen that can be transferred from alveolar spaces to arterial spaces....the lower the difference the better the transfer (better diffusion)
normal is 10-15 mmHg

means that oxygen is getting into the lungs but is not being transferred to the blood
1. V/Q mismatch
2. Right to Left Shunting
3. diffusion limitation (fibrosis)

1. Hypoxemia--is decreased partial pressure of oxygen in the blood
2. Hypoxia-- is decreased delivery of oxygen to the tissues

means that the oxygen is not getting in. But transfer from alveoli to blood is still efficient
1. high altitudes
2. HypOventilation