Obstetrical Assessment

• Gestation


  Time from fertilization of the ovum until the estimated date of delivery - EDD)
• Gestation

  Pre-term: 37 weeks and below

  Full term: 38 to 42 weeks

  Post term: 42 weeks and above
• Naegel's Rule for EDD

  January to March: +9 months, +7 days, same year

  April to December: -3 months, +7 days, +1 year
• Gravidity


  Number of pregnancies
• Parity


  Number of deliveries after age of viability (past 20 weeks)
• G - gravidity

  T - term ( >37 weeks)

  P - preterm (<37 weeks)

  A - abortion ( <20 week)

  L - living (current living children)
• Gravida


  Refers to a pregnant woman.
• Nulligravida


  Is a woman who has never been pregnant.
• Primigravida


  Is a woman who is pregnant for the first time.
• Multigravida


  Is a woman in at least her second pregnancy.
• Nullipara


  Is a woman who has not had a birth at more than 20 weeks of gestation.
• Primipara


  Is a woman who has had one birth that occurred after the 20" week of gestation.
• Multipara


  Is a woman who has had 2 or more pregnancies resulting in viableoffspring.
• McDonald’s Rule is a guideline used in obstetrics to estimate the gestational age of a pregnancy based on the fundal height measurement.
• Mcdonald's Rule

  Trimester: 2nd to 3rd

  Weeks: 20 to 31 weeks

  Example: 25 AOG = 25 cm
• Bartholomew's Rule

  12 weeks - symphysis pubis

  20 weeks - umbilicus

  36 weeks - xiphoid process