Cath Lab Hemodynamics
Saturations. • Pressures. • Calculations Thus Qp/Qs can be calculated. Qs = Rate of O2 extraction / change in O2 content. Qp = Rate of O2 addition/ ...
Measurement of Qp:Qs in the setting of congenital heart disease
1 jui. 2013 Qp = Pulmonary flow. Qs = Systemic flow. Qp:Qs describes the magnitude of a cardiovascular shunt. Normally = 1:1. Left to right shunts >1.0.
What radiologists need to know about the pulmonary---systemic flow
pulmonary---systemic flow ratio (Qp/Qs): What it is how to calculate it
A pulsed Doppler echocardiographic method for calculating
and who had pulmonary and systemic flow ratios (QP:QS) determined by Doppler echocardiography simultaneously with green dye-shunt calculations in the
Noninvasive evaluation of the ratio of pulmonary to systemic flow in
The ratio RSV/LSV determined by the duplex Doppler echocardiography
Quantitative Radionuclide Angiocardiography
19 déc. 1972 A new method of determining pulmonary-to-systemic flow ratios (Qp/Qs) in patients with left-to-right shunts using radionuclide ...
assessment of pulmonary/systemic blood flow ratio after first-stage
ed. The Qp/Qs ratio was calculated by the modified Fick equation where Qp/Qs is equal to the following: Aortic saturation – Mixed venous saturation.
Appendix: Shunt Calculations
Despite the emergence of echo Doppler and MRI techniques for determining right shunting: limitations of the Qp/Qs ratio. American Journal of Cardiology ...
Haemodynamic calculations in the catheter laboratory
calculations—shunt ratio (Qp:Qs) pulmonary blood flow
Optimal pulmonary to systemic blood flow ratio for best
Objective: Imbalances of pulmonary to systemic blood flow ratio (Qp/Qs) compounded with inadequate Postoperative management and data calculation.
Haemodynamic calculations in the catheter laboratory - Heart
Pulmonary to systemic flow ratio (Qp:Qs) The calculation is based on the Fick principle by which both pulmonary and systemic ?ow may be estimated As such factors as oxygen carrying capacity and oxygen consumption are used for each individual calculation (for pulmonary and for systemic ?ow) they cancel
Searches related to qp/qs ratio calculation filetype:pdf
The QP/QS ratio (QP = pulmonary circulation and QS = systemic circulation) is calculated by dividing the surface area under the fitted curve (A1) by the difference between this surface area and the surface area under the fitted early recirculation curve
What is the AUC of Qp/Qs ratio?
- threshold of a Qp/Qs ratio >1.75:1 (area under curve (AUC) 5 0.99). Quantification of left-to-right shunting can be performed reliably and accurately by PC-MRI and the data
What is the cut-off value for Qp/Qs ratio assessed by oximetry?
- Interestingly, the Qp/Qs ratios assessed by oximetry were only slightly below the cut-off value of 1.5 in these two patients. Qp/Qs ratio is, however, only one
What is the best way to detect Qp/Qs ratios in shunt volumes?
- overestimate shunt volumes as compared to invasive oximetry. Accordingly, ROC analysis determined that detection of Qp/Qs ratios of >1.5:1 by oximetry was best
Is a conservative Qp/Qs ratio a good strategy?
- Qp/Qs ratios would have favoured a conservative strategy. Interestingly, the Qp/Qs ratios assessed by oximetry were only slightly below the cut-off value of 1.5
