Reducing the Inconsistency between Doppler and Invasive Measurements of the Severity of Aortic Stenosis Using Aortic Valve Coefficient: A Retrospective Study on Humans

Table 1

Mean values and range of blood pressure and Doppler and catheterization measured diagnostic parameters obtained retrospectively (𝑛=19).

	Mean	Range
Systolic blood pressure [Pa]	17625 ± 667	11732–23065
𝑉jet [m/s]	2.76 ± 0.09	2.0–3.55
𝑉LVOT [m/s]	0.61 ± 0.036	0.42–0.93
Δ𝑝doppler [Pa]	4506 ± 373	2666–7599
Δ𝑝catheter [Pa]	4680 ± 307	1560–7866

𝑉_jet: Doppler measured mean jet velocity at the vena contracta of the aortic valve; 𝑉_LVOT: Doppler measured mean left ventricular outflow tract velocity; Δ𝑝_doppler: Doppler measured mean pressure gradient; Δ𝑝_catheter: catheterization measured mean pressure gradient.