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I have a symptom

I know the diagnosis

Orthopedic Injuries

Fractures & dislocations

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Interpretation guide

Bedside ultrasound

Step-by-step guides

ACLS / PALS / NRP

Articles & updates

In-depth clinical reviews

Menu

I have a symptom

I know the diagnosis

Orthopedic Injuries

Fractures & dislocations

Clinical calculators

Billing code lookup

Interpretation guide

Bedside ultrasound

Step-by-step guides

ACLS / PALS / NRP

Articles & updates

In-depth clinical reviews

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CalculatorsA-a Gradient (Alveolar-Arterial Oxygen Gradient)

PulmonologyFormula

A-a Gradient (Alveolar-Arterial Oxygen Gradient)

Calculates the alveolar-arterial oxygen gradient to determine the cause of hypoxia.

Parameters

Age(years)

FiO2(%)

PaCO2 (from ABG)(mmHg)

PaO2 (from ABG)(mmHg)

Awaiting input

Fill in the parameters to see your result