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QP/QS Calculator and Cardiac Flow
gegcalculators.com/qp-qs-calculator/Yapay zekadan makale özeti
- Basic Concepts
- QP represents pulmonary blood flow, QS represents systemic blood flow
- Normal QP/QS ratio is close to 1, indicating balanced blood flow
- QP/QS ratio helps assess shunts and abnormalities in heart circulation
- Measurement Methods
- QP/QS can be measured using cardiac catheterization, echocardiography, or MRI
- Cardiac catheterization is most accurate method for VSD measurements
- Echocardiography uses Doppler ultrasound to visualize blood flow patterns
- Types of Shunts
- Left-to-right shunts allow blood from left to right side
- Right-to-left shunts bypass lungs, entering systemic circulation
- VSDs can be classified into four main types: membranous, muscular, inlet, outlet
- Calculation Formulas
- QP = (Oxygen content in pulmonary artery - Oxygen content in aorta) / (Hemoglobin x Oxygen saturation in pulmonary artery)
- QS = (Oxygen content in aorta - Oxygen content in pulmonary artery) / (Hemoglobin x Oxygen saturation in aorta)
- QS/Qt ratio = (Systemic oxygen delivery) / (Total oxygen delivery)