Photo By: @alyssasieb https://nappy.co/photo/3893
Goals for PNC include having providers assist patients in attaining, maintaining, and enhancing health. They should create individualized, targeted prenatal care according to the woman’s needs, so the initial and continuing risk assessment should occur. Ideally, this begins before pregnancy.
Giorux, M. (2019, January). Antepartum Care: Trimesters of Pregnancy. OBGYNAcademy.https://obgynacademy.com/antenatal-care/
Most women come for their first prenatal visit around 8-10 weeks.
Interview: Review of past medical history
Review of past obstetric history
Review of family medical history including identification of possible genetic disorders and congenital anomalies
Review of medications being taken—Evaluate pregnancy category:
A and B: No concerns
C: Benefit outweighs risk
D: Fetal risk has been shown—benefit significantly outweighs risk
X: Do not use in pregnancy
Review of social history including support systems, smoking, drug use, and assessment for intimate partner violence
Review of infection history including sexually transmitted infections (specifically, genital HSV) and immunizations (specifically, rubella and varicella)
Psychological assessment
Emotional assessment: Feelings and emotions, is pregnancy planned, relationships with those around her
Maternal age - Mothers who are over 35-years-old are at more risk for genetic disorders in the newborn and medical conditions. Mothers who are teenagers or over 40-years-old are a higher risk for pregnancy complications.
Maternal nutrition status (especially if vegetarian or a history of eating disorders), folic acid intake
Review of systems
Giorux, M. (2019, January). Antepartum Care: Risks of Advanced Maternal Age. OBGYNAcademy.https://obgynacademy.com/antenatal-care/
"Embryo Week 9-10" by lunar caustic, used under CC BY SA 2.0/Cropped from original
Physical Exam:
Confirmation of gestational age
Vital signs
Weight
Heart
Lungs
Thyroid
Costovertebral (CVA) tenderness
Abdomen exam: Including fetal doppler or ultrasound and fundal height if greater than 13 weeks
Pelvic/Bimanual exam: including pap if needed
Screenings:
Carrier Genetic Screenings if Desires
Cell Free DNA and Nuchal Translucency Genetic Screenings for Aneuploidy if Desires
If a mother is over 35-years-old, she may desire to skip to Aneuploidy Diagnostic testing due to her increased risk of these conditions
More information on Genetic testing can be found in that module
Ultrasound: For dating and viability
Medications:
Prenatal Vitamins
Folic Acid 0.4mg (1mg if multifetal pregnancy or history of neural tube defects)
"Fetal Ultrasound" by BruceBlausderivative, used under CC BY SA 4.0/Cropped from original
Labs:
Blood type and Rh
Antibody screen
Hemoglobin (Hgb) electrophoresis
Complete blood count (CBC): Hemoglobin and hematocrit (H/H) and platelet count, specifically
Rubella titer
Varicella titer
Urine culture
Gonorrhea
Chlamydia
Rapid plasma reagin (RPR) test for Syphilis
Hepatitis B surface antigen (HBsAG)
Hepatitis C
HIV
"Fetus" by Raman Ozalisa, used under CC0/Cropped from original
Other labs:
Illicit drug screen
Tuberculosis screen
TORCH infections (Toxoplasmosis, Other agents, Rubella, Cytomegalovirus, and Herpes simplex)
Lead levels
Hemoglobin A1c (HbA1c) or early 1-hour glucose screen at 16 weeks (if high risk for gestational diabetes)
Comprehensive metabolic panel (CMP) (if hypertensive)
Education:
Address questions they may have
Nutrition/nausea and vomiting treatments if applicable
Infection precautions:
Harmful to fetus: Listeria, parvovirus, rubella, syphilis, varicella, toxoplasmosis
Harmful during delivery: HSV, group B strep, varicella
Influenza or COVID-19 can cause severe illness in pregnant women
Travel restrictions: After 28 or 36 weeks as per practice protocol
Exercise: Dehydration, calorie intake
Environmental exposures: Lead, mercury, radiation
Genetic screenings available for aneuploidy and maternal carrier screenings
General practice and hospital guidelines
Contacting the office between visits
After the first visit, women will come for prenatal visits every four weeks until 28 weeks, then every two weeks until 36 weeks, and then weekly until delivery
Interview:
Interview of how she is feeling and any symptoms
Confirm Gestational Age
Check for fetal movement if greater than 20 weeks gestation
"Fetal Doppler-Ultrasound" by Amada44, used under CC BYS A 3.0/Cropped from original
Video By: Open RN Project (2020, March 25). ARISE Fundal Measurement - OB Nursing Level 2A Simulation 2294. https://www.youtube.com/watch?v=zXyyzZwf3E4
Fundal Height Measurements
The fundal height is a measurement of the growth of the pregnancy. The top of the uterus (known as a fundus) will reach above the pubic bone by about 12 weeks, halfway between the pubic bone and umbilicus by about 15-16 weeks, and at the umbilicus by about 20 weeks. After 20 weeks, a fundal height is measured using a measuring tape from the pubic bone to the top of the fundus in centimeters done on the outside of the abdomen. The fundal height measurement should be about equal to the number of weeks gestation. If the fundal height is greater or less than one centimeter off of the gestational age further ultrasound evaluation should be done to determine if there is a reason for the discrepancy.
Genetic Screenings (if desired):
10 weeks: Cell Free DNA aka Noninvasive Prenatal Testing (NIPT)
11-14 weeks: First Trimester Screening aka Nuchal Translucency ultrasound (NT)
16-18 weeks: Maternal Serum Alpha Fetoprotein (MSAFP)
Ultrasound:
20 weeks: anatomy ultrasound screening
Other ultrasounds may be done based on high-risk pregnancy screenings - often check growth or fetal well-being
"Fetal Ultrasound" by BruceBlausderivative, used under CC BY SA 4.0/Cropped from original
University of California Television (2019, August 3). Ultrasounds During Pregnancy. https://www.youtube.com/watch?v=SuiV4ATK7O0
Medications:
28 weeks: RhoGAM if Rh-negative blood type
Hepatitis B vaccine and Pneumococcal vaccine if an individual is high-risk for infection
Rubella, Varicella, and Gardasil vaccines should be avoided in pregnancy
Vaccines given during pregnancy can give passive immunity through the placenta to the newborn for several months after delivery.
"Groupe de tubes dans à Cotonou 05" by Adoscam, used under CC BY SA 4.0/Cropped from original
Labs:
24–28 weeks: CBC, 1-hour glucose screening for gestational diabetes using a 50-gram glucose load (a 3-hour glucose tolerance test is done using 100g of glucose if the 1-hour test is not passed)
28 weeks: Antibody screening if Rh-negative blood type
28 weeks: RPR and HIV (if practice protocol)
36 weeks: Group B Strep culture
36 weeks: RPR, Gonorrhea, and Chlamydia (if practice protocol)
Education:
Address questions they may have
20 weeks: Encourage prenatal classes for labor, breastfeeding, newborn care, etc.
28–30 weeks: Fetal kick counts and preterm labor precautions
36 weeks: Labor precautions
"During-Pregnancy-Pregnancy-by-Trimester" by Sarah Bruekan, used under CC BY SA 4.0/Cropped from original
"Leopold Maneuvers" by Christian Gerhard Leopold, used under Public Domain/Cropped from original
Leopold's Maneuver is a technique used to determine the position of the fetus in the abdomen through palpation of the abdomen.
Palpating a smooth round body part would indicate the fetal back
Palpating lumpy body parts are the arms and legs of the fetus
To determine where the head is positioned in the uterus, grab and wiggle the presenting part (suprapubic area) and the part in the fundus of the uterus. A fetal head will wiggle like a small ball whereas the moving the body will shake the whole uterus
Global Health Media Project (2014). The Position of the Baby - Childbirth Series: https://vimeo.com/446036818/3f73718bcc?embedded=true&owner=9412954&source=video_title
Centering pregnancy is a type of group prenatal care where women with similar due dates are invited to a group after a prenatal visit. During these prenatal visits, a facilitator is used for discussions, to give education, and to answer questions that would be common at this stage of pregnancy.
Studies show great outcomes, especially for adolescents or women of low socioeconomic status.
Planning is needed to ensure: space for a group visit, participants who are able to schedule at the same time, enough health care providers and staff, and training for facilitators.
Association of Professors of Gynecology and Obstetrics (2015, September 3). Topic 10: Antepartum Care: https://www.youtube.com/watch?v=JM7oqjqtA8o&list=PLy35JKgvOASnHHXni4mjXX9kwVA_YMDpq&index=7
American Academy of Pediatrics and American College of Obstetricians and Gynecologists (2017). Guidelines for Perinatal Care. Library of Congress. https://www.acog.org/clinical-information/physician-faqs/-/media/3a22e153b67446a6b31fb051e469187c.ashx
Americam College of Obstetricians and Gynecologists (2018, March). Group Prenatal Care - Committee Opinion Number 731. https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2018/03/group-prenatal-care
American College of Obstetricians and Gynecologists (2023, August). Routine Tests During Pregnancy. https://www.acog.org/womens-health/faqs/routine-tests-during-pregnancy
Anderson, J and Ghaffarian, K.R. (2023, January 2). Early Pregnancy Diagnosis. https://www.ncbi.nlm.nih.gov/books/NBK556135/#:~:text=Indications%20for%20obtaining%20a%20pregnancy,syncope,%20hypotension,%20or%20tachycardia.
Centers for Disease Control and Prevention (2023). Guidelines for Vaccinating Pregnant Women: https://www.cdc.gov/vaccines/pregnancy/hcp-toolkit/guidelines.html
Cunningham, F.G. (2010). Appendix B: Laboratory Values in Normal Pregnancy. Protocols for High-Risk Pregnancies: An Evidence-Based Approach (5th Edition). Blackwell Science Ltd. ISBN: 978-1-405-19650-5
Government of Canada (2023, October 23). Family Centered Maternity and Newborn Care: National Guidelines: Chapter 3: Care During Pregnancy: https://www.canada.ca/en/public-health/services/publications/healthy-living/maternity-newborn-care-guidelines-chapter-3.html
National Institutes of Health (2017, January 31). What Happens During Prenatal Visits? https://www.nichd.nih.gov/health/topics/preconceptioncare/conditioninfo/prenatal-visits
National Institutes of Health (2023, August 11). COVID-19 Vaccination and Boosting During Pregnancy benefits Pregnant People and Newborns. https://www.nih.gov/news-events/news-releases/covid-19-vaccination-boosting-during-pregnancy-benefits-pregnant-people-newborns
OBGProject (2023). Vaccination in Pregnancy: CDC Recommendations and ACOG Update. https://www.obgproject.com/2016/10/16/vaccination-pregnancy-cdc-recommendations/
Perinatology.com (2023). Normal Reference Ranges and Laboratory Values in Pregnancy. https://www.perinatology.com/Reference/Reference%20Ranges/Reference%20for%20Serum.htm
US Department of Health and Human Services Office on Women's Health (2023). Prenatal Care FAQs. https://www.womenshealth.gov/a-z-topics/prenatal-care