OB Measurements and Formulas
LOGIQ 500 Basic Users Manual
2233658–100 Rev. 0
9–13
USA Method (cont’d)
Calc
Mnemonic
Calc Name
Formula
Author
Reference
AFI*
Amniotic
Fluid Index
AFI=AFI1 (distance) + AFI2 (distance) + AFI3 (dis-
tance) + AFI4 (distance)
Dr. Rutherford/Dr.
Phelan, Obstetrics &
Gynecology Volume
70, No. 3, Part 1, p.
353–6, Sept. 1987.
Dr. C. C. Smith, The
Female Patient, Vol-
ume 15, p. 85-97,
March 1990.
* The skip function using the Ellipse rocker switch is not available for AFI.
Table 9–4. OB Calculation Formulas Part 2—USA Version Factory Defaults (cont’d)