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.