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Intrapulmonary Right-to-Left Shunt Ratio

Alveolar-Arterial Pressure Difference
mmHg
Arteriovenous Oxygen Content Difference
ml/dL
Alveolar-Arterial Oxygen Pressure Difference
mmHg
Result:
%

Calculation Formula

Qs/Qt = P(A-a)*0.0031/(C(a-v)O2+P(A-a)O2*0.0031)

Description

Normal Range: 3%～5%

Increased under pathological conditions, it is of great value for the diagnosis and prognosis of congenital heart disease with right-to-left shunt and acute respiratory distress syndrome.

References

Research Paper Ouyang Qin, editor. Clinical Diagnostics (Eight-Year Edition) [M]. People's Medical Publishing House. 2005.
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