Norm Preg PT.1

Normal Pregnancy: Part 1

1. Obstetric History

Definitions
  • Gravidity: The number of pregnancies a woman has had.

  • Primigravida: A woman in her first pregnancy.

  • Para: Refers to a woman who has produced one or more viable offspring, specifically defined as having carried a pregnancy of 20 weeks or more, at which point the offspring is considered viable.

  • Primipara: A woman who has had one birth after a pregnancy of at least 20 weeks. This is often shortened to "primip."

  • Multipara: A woman who has had two or more pregnancies resulting in viable offspring. This term is abbreviated as "multip."

  • Nulligravida: A woman who has never been pregnant.

Additional Terminology
  • Multigravida: A woman who is currently pregnant for her third time, having had two or more pregnancies previously.

  • Grand multipara: A woman who has given birth seven or more times.

2. Terminology for Obstetric History

Four-Number System (TPAL)
  • G (Gravida): Indicates the current pregnancy.

  • T (Term births): Number of pregnancies that ended after 37 weeks’ gestation, categorized as term.

  • P (Preterm births): Number of pregnancies that ended after 20 weeks (viability) but before the completion of 37 weeks.

  • A (Abortions): Reflects the number of pregnancies that ended before 20 weeks (either spontaneous or elective abortions).

  • L (Living children): The number of children currently living.

Practice Question

Given a client’s obstetric history indicating two term pregnancies and two miscarriages, the TPAL would be:

  • A. 0121

  • B. 0221

  • C. 2022

  • D. 2201

Follow-Up Question

Based on the obstetric history provided, what is the client’s gravida status?

  • A. 1

  • B. 2

  • C. 3

  • D. 4

3. Gestational Age, Estimated Due Date (EDD), and Estimated Delivery Date (EDB)

Nagele’s Rule
  • Formula: LMP (Last Menstrual Period) minus 3 months plus 7 days.

  • Example application of the rule will be practiced in the session.

4. Normal Pregnancy Indicators

Quickening
  • The term refers to the first fetal movements felt by the mother, typically around 16-20 weeks of gestation.

Audible Fetal Heart Rate (FHR)
  • Fetal heart rate can usually be heard between 10-12 weeks gestation.

Fundal Height
  • Measured in centimeters from the fundus to the symphysis pubis after 18-20 weeks; this measurement correlates with the number of weeks gestation.

  • Before the 18-20 week mark, hand measurements are used rather than direct cm measurements.

5. Signs of Pregnancy

Presumptive Signs
  • Amenorrhea: The absence of menstruation.

  • Nausea/Vomiting (N/V): Often referred to as morning sickness.

  • Fatigue: Extreme tiredness commonly reported during early pregnancy.

  • Breast tenderness/changes: Physical changes in the breasts due to hormonal shifts.

  • Quickening: The feeling of fetal movement by the mother.

  • Urinary frequency: Increased need to urinate due to pressure on the bladder.

  • Uterine enlargement: Growth of the uterus as pregnancy progresses.

Probable Signs
  • Chadwick’s sign: A bluish discoloration of the cervix as a sign of increased blood flow.

  • Goodell’s sign: Softening of the cervix.

  • Hegar’s sign: Softening of the lower uterine segment.

  • Braxton-Hicks contractions: Irregular, painless contractions that may occur as the body prepares for labor.

  • Ballottement: A technique used to feel a floating fetus by pushing on the cervix.

  • Positive pregnancy test: Detection of pregnancy hormones.

  • Abdominal enlargement: Enlargement of the abdomen usually associated with a growing fetus.

  • Palpable fetal outline: The ability of a clinician to feel the outline of the fetus through the abdominal wall.

Positive Signs
  • Fetal heart tones: The actual heartbeat of the fetus can be detected.

  • Visualization of the fetus via ultrasound (US): Imaging technique that provides visual confirmation of the fetus.

  • Palpable fetal movement felt by a clinician: Clinician can feel the fetus moving during examinations.

6. Verifying Pregnancy

Human Chorionic Gonadotropin (hCG)
  • Blood and urine tests accurately assess levels of hCG, a hormone produced during pregnancy.

  • hCG Detection Timeline: Can be detected as early as 7-8 days post-conception.

  • hCG Level Dynamics: Levels peak between 60-70 days of gestation and then decline until approximately 100-130 days into the pregnancy, after which lower levels persist throughout the rest of the pregnancy.

  • Home Pregnancy Tests: These tests should be conducted using the first morning urine and following included directions for accuracy.

Elevated and Decreased hCG Levels
  • Increased levels of hCG may indicate:

    • Multifetal pregnancy

    • Ectopic pregnancy

    • Hydatidiform mole (gestational trophoblastic disease)

    • Genetic abnormalities such as Down syndrome.

  • Decreased levels of hCG may indicate:

    • Miscarriage

    • Ectopic pregnancy.

  • Medications Impacting Pregnancy Tests: Certain medications, including anticonvulsants, diuretics, and tranquilizers, may lead to false-positive or false-negative pregnancy test results.