Study Notes on Pregnancy and Maternal Health

Pregnancy can be a shock for many or something that has been anticipated for years.
The initial phase often involves acceptance of the fetus and preparation for the new baby.

Blood Volume: Increases significantly during pregnancy.
Menstruation:
- The menstrual period should cease, though some women may experience light spotting.
- Absence of a period is referred to as amenorrhea.
Second Trimester Changes:
- Potential increase in blood pressure, with a return to normal levels later.
- Uterine changes:
- The uterus expands due to estrogen and fetal growth.
- Capacity changes from holding around 10 mL to approximately 5,000 mL during pregnancy.
Cervical Changes:
- The cervix begins to soften and may exhibit a bluish discoloration (known as Chadwick’s sign).
- Mucus Plug: A mucus plug forms in the cervix to prevent organisms from entering the uterus, and loss of this plug doesn't necessarily indicate labor onset.

The uterus grows significantly:
- At 20 weeks, the uterus is at the level of the umbilicus.
- At 36 weeks, the uterus is positioned under the breast.
- By 40 weeks, the uterus dips as the baby descends into the birth canal.
Braxton Hicks Contractions: These are false contractions that may be more noticeable in women who have had previous pregnancies.

Increased levels of estrogen and progesterone lead to breast fullness and the production of colostrum (nutrient-rich first milk).
Colostrum contains antibodies beneficial for newborns, often referred to as “liquid gold.”

Respiratory Changes:
- Tidal volume (amount of air inhaled) increases, which can lead to feelings of breathlessness.
- Thoracic breathing becomes more prominent due to uterine enlargement.
Cardiovascular Changes:
- Increased cardiac output and workload on the heart.
- Edema can occur due to increased blood volume and pressure on lower extremities.
- Special care taken (lying on the left side) to avoid pressure on the vena cava.

Changes due to increased estrogen and progesterone:
- Linea Nigra: A dark line that develops from the belly button to the pubic area.
- Chloasma: A pigmentation mask or darkening on the skin often referred to as the mask of pregnancy.
- Striae Gravidarum: Stretch marks that may appear but often fade post-pregnancy.

Normal weight gain during pregnancy:
- Recommended is between 25 to 35 pounds.
- Variances based on starting weight:
- Underweight women may need to gain 40 pounds.
- Overweight women may need limited gains.

Subjective signs: Changes reported by the mother, including missed period, nausea, vomiting, fatigue, breast changes.
Probable signs: Observations made by the healthcare provider, such as changes to the cervix and abdominal enlargement.
- Diagnostic signs: Confirmed evidence of pregnancy via ultrasound or the detection of a fetal heartbeat.
- Pregnancy Tests: Urine tests detect HCG levels, a hormone indicating pregnancy; a blood test can provide more detailed information.

Gravida: Total number of pregnancies the mother has had.
Para: The outcome of those pregnancies (i.e., number of live births).
- TPAL acronym used for detailed documentation:
- T: Number of term infants (born after 37 weeks).
- P: Number of preterm infants (born before 37 weeks).
- A: Number of abortions (spontaneous or elective).
- L: Number of living children.
Important Medical History:
- Previous gynecological histories such as STDs or surgical procedures.
- Inquiry into substance use history (cigarettes, alcohol, drugs).
- Family and genetic histories, as certain conditions may be hereditary.

Using Nagle's rule:
- Example: Current date: November 12.
- Subtract 3 months from the last menstrual period (LMP): August.
- Add 7 days to find estimated due date: (August + 7 days) results in August 19 as the due date.

Fetal Movement: Generally felt around 20 weeks.
Fetal Heart Rate: Can be heard by 12 weeks using a Doppler.
Initial assessments include routine tests such as:
- Pap smear for cervical cancer testing.
- Blood tests to check levels of hemoglobin and screen for infections (HIV, Hepatitis B).
- Urinary tests to rule out infections, and STI testing (chlamydia, gonorrhea, syphilis).

Importance of being respectful of cultural preferences in healthcare provision, such as the need for female staff or specific practices surrounding circumcision and prenatal care.

Recommended practices:
- Daily showers versus long soaks in hot water.
- Regular breast care when colostrum appears.
- Maintain oral hygiene and hydrate properly.
- Recommendations regarding clothing and sexual activity based on individual comfort.
Exercise Considerations:
- Continuation of pre-pregnancy exercises as long as no complications (like spotting or bleeding) occur.
- Awareness of body signals and limitations.

Backaches, headaches, shortness of breath (relieved when the baby drops), and edema.
Signs of labor to recognize: loss of mucus plug, increased energy levels, and contractions.

Definition: Teratogens are substances that can harm fetal development (e.g., infections, environmental factors, drugs).
Specific infections to be cautious of include:
- German measles, toxoplasmosis, herpes simplex, cytomegalovirus, etc.
Risks associated with certain medications and substances should be clearly communicated to the patient.

Awareness of safe practices and ongoing dialogue with healthcare providers is critical throughout the pregnancy.
Women are encouraged to maintain open lines of communication about any concerns or inquiries related to pregnancy and health practices.