2
PG mean = sum(4v
)/N
where:
v =peak velocity at interval n
N = the number of intervals in the Riemann sum
Qp/Qs
Qp/Qs = SV Qp site/SV Qs site = RVOT SV/LVOT SVOh, J.K., J.B. Seward, and A.J. Tajik. The Echo Manual.
3rd Edition, Boston: Philadelphia: Lippincott Williams and Wilkins, (2007), p.70-72.
where:
RVOT SV = RVOT CSA* RVOT VTI = π/4 * RVOT diameter
LVOT SV = LVOT CSA * LVOT VTI = π/4 * LVOT diameter
Stroke Volume (SV) Doppler in ml
Oh, J.K., J.B. Seward, and A.J. Tajik. The Echo Manual. 3rd Edition, Boston: Philadelphia: Lippincott Williams
and Wilkins, (2007), p.69-71.
SV = (CSA * VTI)
where:
CSA = Cross Sectional Area of the orifice (LVOT area)
VTI = Velocity Time Integral of the LVOT
Cleaning and disinfecting
This section updates the instructions for cleaning and disinfecting the ultrasound system, transducers, and
accessories.
Use the FUJIFILM SonoSite recommendations when cleaning or disinfecting your ultrasound system,
transducer, and accessories. Use the cleaning recommendations in the peripheral manufacturer's instructions
when cleaning or disinfecting your peripherals.
Cleaning and disinfecting
* RVOT VTI
2
* LVOT VTI
2
7