[2] PRELIMS | OB SCORING - EDC, AOG Flashcards
Past Obstetric History
Number of pregnancies regardless of duration and outcomes
includes present pregnancy
Gravida (G)
Woman who had one pregnancy
Primigravida
Woman who is not and never has been pregnant
Nulligravida
Woman who had 2 or more pregnancies
Multigravida
Past Obstetric History
Number of pregnancies carried to the period of viability whether born dead or alive at birth
Parity/Para (P)
Parity / Para
Period of viability
20 weeks or greater
Parity / Para
Multiple pregnancies count as ____
one
Determine the number of weeks:
Term
37-42 weeks Gestational Age
Determine the number of weeks:
Preterm
20-36 6/7 weeks Gestational Age
Determine the number of weeks:
Postterm
More than 42 weeks Gestational Age
Parity / Para
Woman who has never given birth
Nullipara
Parity / Para
A woman who has delivered once of a fetus or fetuses who reached stage of viability
Primipara
Parity / Para
A woman who has completed two or more pregnancies to the stage of viability
Multipara
Parity / Para
Any ____ is not included in the counting of parity
Abortion
Meaning of TPALM
- T = number of fullterm births
- P = number of preterm births
- A = number of abortions
- L = number of currently living children
- M = number of multiple pregnancies
OB Scoring
What does G4P2 20220 mean?
4 pregnancies, 2 births, 2 term births, 0 preterm births, 2 abortions, 2 living children, 0 multiple pregnancy
OB Scoring
What does G3P3 21041 mean?
3 pregnancies, 3 births, 2 term births, 1 preterm births, 0 abortions, 4 living children, 1 multiple pregnancy
Naegele’s Rule
January to March: Count back (1) ____ from first day of LMP then add (2) ____
(1) 3 calendar months
(2) 7 days
Naegele’s Rule
April to December: Count back (1) ____ from first day of LMP then add (2) ____
(1) 3 calendar months
(2) 7 days and 1 year
Determine the EDD/EDC:
November 5, 2023 (LMP)
August 12, 2024
Determine the EDD/EDC:
October 30, 2024 (LMP)
August 6, 2025
Determine the EDD/EDC:
February 2, 2024 (LMP)
November 9, 2024
Determine the EDD/EDC:
January 23, 2024 (LMP)
October 30, 3024
DoQ: Date of Quickening
Primigravida: Date of Q + ____ = EDC
4 months & 20 days
4 months & 20 days
Multigravida: Date of Q + ____ = EDC
5 months & 4 days
Determining Weeks of AOG
- Current date of consulation minus ____
- The answer is then divided by ____
- The ____ is number of weekdays
- The ____ is number of days
(1) date of LMP
(2) 7
(3) quotient
(4) remainder
Determining Weeks of AOG - McDonald’s Rule
- Used in (1) ____
- Take the fundic height by measuring distance from (2) ____
- (3) ____ = AOG in Months
(1) 2nd and 3rd Trimester
(2) notch of the symphysis pubis to the fundus
(3) FH / 4
Measurement of fundic height (FH) is expressed in ____
centimeters
Roughly corresponds to gestational age in weeks (16-36 weeks)
Fundic Height (FH)
Determining Weeks of AOG
Measure AOG by determining the position of the fundus in the abdominal cavity
Bartholomew’s Rule of Fours
Bartholomew’s Rule of Fours
Slightly above the symphysis pubis
12 weeks
Bartholomew’s Rule of Fours
Level of umbilicus
20 weeks
Bartholomew’s Rule of Fours
Halfway the umbilicus and xiphoid process
28 weeks
Bartholomew’s Rule of Fours
Level of the xiphoid process
36 weeks
Bartholomew’s Rule of Fours
Sligtly below the xiphoid process
40 weeks
