Obstetrical References - FujiFilm SonoSite M-Turbo User Manual

Right Ventricular Systolic Pressure (RVSP) in
mmHg
Reynolds, Terry. The Echocardiographer's Pocket
Reference. School of Cardiac Ultrasound, Arizona
Heart Institute, (1993), 152.
RVSP = 4 * (Vmax TR) 2
where: RAP = Right Atrial Pressure
S/D
Reynolds, Terry. The Echocardiographer's Pocket
Reference. 2nd ed., School of Cardiac Ultrasound,
Arizona Heart Institute, (2000), 217.
S velocity/ D velocity
where: S velocity = Pulmonary vein S wave
D velocity= Pulmonary vein D wave
Stroke Index (SI) in cc/m
Mosby's Medical, Nursing, & Allied Health
Dictionary, 4th ed., (1994), 1492.
SI = SV/BSA
where: SV = Stroke Volume
BSA = Body Surface Area
Stroke Volume (SV) Doppler in ml
Oh, J.K., J.B. Seward, A.J. Tajik. The Echo Manual.
2nd ed., Lippincott, Williams, and Wilkins,
(1999), 40, 59, 62.
SV = (CSA * VTI)
where CSA = Cross Sectional Area of the
orifice (LVOT area)
VTI = Velocity Time Integral of the
aortic valve
Tricuspid Valve Area (TVA)
Reynolds, Terry. The Echocardiographer's Pocket
Reference. 2nd ed., School of Cardiac Ultrasound,
Arizona Heart Institute, (2000), 55, 391, 452.
TVA = 220 / PHT
+ RAP
2
Stroke Volume (SV) 2D and M Mode in ml
Oh, J.K., J.B. Seward, A.J. Tajik. The Echo Manual.
2nd ed., Boston: Little, Brown and Company,
(1994), 44.
SV = (LVEDV – LVESV)
where: SV = Stroke Volume
LVEDV = End Diastolic Volume
LVEDSV = End Systolic Volume
Velocity Time Integral (VTI) in cm
Reynolds, Terry. The Echocardiographer's Pocket
Reference. 2nd ed., School of Cardiac Ultrasound,
Arizona Heart Institute, (2000), 383.
VTI = sum of abs (velocities [n])
where: Auto Trace – distance (cm) blood
travels with each ejection period.
Velocities are absolute values.

Obstetrical references

Amniotic Fluid Index (AFI)
Jeng, C. J., et al. "Amniotic Fluid Index
Measurement with the Four Quadrant Technique
During Pregnancy." The Journal of Reproductive
Medicine, 35:7 (July 1990), 674‐677.
Average Ultrasound Age (AUA)
The system provides an AUA derived from the
component measurements from the
measurement tables.
Estimated Date of Delivery (EDD) by Average
Ultrasound Age (AUA)
Results are displayed as month/day/year.
EDD = system date + (280 days – AUA in days)
Estimated Date of Delivery (EDD) by Last
Menstrual Period (LMP)
The date entered into the patient information for
LMP must precede the current date.
Results are displayed as month/day/year.
Chapter 7: References 177