Maternal Newborn Unit 1

Role of the Maternal-Newborn Nurse: Advocacy, Communication & Health Promotion

Maternal newborn nurse provides care to clients during pregnancy, childbirth, and the postnatal period, as well as the care of newborns (4 weeks).

Advocacy- empowering clients to voice preferences and protecting their rights within the care team

Therapeutic relationships & communication- building trust through active listening, empathy, and culturally sensitive interaction

Health promotion & injury prevention- teaching prenatal self-care, safe sleep, immunizations, and warning signs to report

Support, counseling & collaboration- partnering with the interdisciplinary team to coordinate holistic, family-centered care

Current Statistics & Trends Shaping Care

Fertility trends are influenced by maternal age, BMI (elevated or low), diet, smoking status, and physical activity

U.S. birth rates have trended downward over the past decade, with first-time parents older on average

Lifestyle and metabolic factors directly affect conception, the course of pregnancy, and neonatal outcomes

Nurses use this population-level data to tailor preconception counseling and risk-based prenatal care plans

Morbidity, Mortality & Health Disparities

Leading causes of maternal morbidity/mortality: hemorrhage (500mL for vaginal birth and 1000mL for C-Section birth), hypertensive disorders, infection, cardiovascular conditions, and mental health/substance-related causes

Risk factors: late or absent prenatal care, chronic disease, advanced maternal age, and socioeconomic barriers

Fetal and infant mortality are linked to prematurity, congenital anomalies, and unknown causes.

Significant racial and ethnic disparities persist in U.S. maternal and infant mortality rates

Healthy People 2030 sets national targets to reduce maternal/infant mortality and close these disparity gaps

Social Determinants of Health

The conditions in which people are born, live, work, and age shape outcomes as much as clinical care does

Limited income, housing instability, food insecurity, and transportation barriers can all delay or disrupt prenatal care

Nurses screen for SDOH and connect clients to community resources such as WIC, home-visiting programs, and social work

Social Determinants of Health

Categories

Economic Stability

Education Access and Quality

Health Care Access and Quality

Neighborhood and Built Environment

Social and Community Context

Substance Use in Pregnancy

• Alcohol- no safe amount established; risk for fetal alcohol spectrum disorder

• Tobacco- associated with low birth weight, preterm birth, and placental complications

• Cannabis- use is increasing and often underreported; linked to potential neurodevelopmental effects

• Illicit drug use & opioids- risk for neonatal abstinence syndrome (NAS), preterm labor, and maternal withdrawal

Nursing priority: nonjudgmental screening with a validated tool, harm reduction, and referral to treatment

Interpersonal Violence & Abuse

Pregnancy can be a period of increased risk for intimate partner violence

Types include physical, emotional/psychological, sexual, and financial abuse

Screen privately, every trimester, using direct, nonjudgmental questions (such the HITS screening where a score of 10 is a red flag)

Know mandatory reporting requirements and keep safety-planning resources (hotlines, shelters, social work) ready

Family Dynamics & Social Support Systems

Family structures vary widely- nuclear, single-parent, blended, extended, and chosen family

Social support buffers stress and improves coping, breastfeeding success, and postpartum mental health

Nurses assess who the client identifies as their support system rather than assuming a structure

Encourage involvement of identified support persons in care planning and education

Culture, Family Roles & Childbearing Beliefs

Culture shapes beliefs about pregnancy, labor, postpartum recovery, infant feeding, and family roles

Childbearing beliefs and practices- diet, rest periods, rituals- vary widely and may guide care preferences

Nurses integrate cultural practices into the plan of care whenever it is safe to do so, rather than overriding them

Avoid assumptions- ask each client directly about their beliefs and preferences

Cultural Competence, Awareness, LGBTQIA+ & Religion

Cultural awareness- Recognizing one's own biases and the existence of other worldviews

Cultural competence- The ongoing, applied skill of using that awareness effectively in clinical care

LGBTQIA+ clients- use inclusive language, ask about chosen terms, and avoid assumptions about partners or family-building

Religion may guide decisions about interventions, dietary practices, and loss or end-of-life situations

Community Support & Levels of Prevention

Primary prevention- preventing illness before it occurs (education, immunizations, prenatal vitamins)

Secondary prevention- early detection through screening (prenatal labs, newborn screening)

Tertiary prevention- managing and minimizing complications of an existing condition (chronic disease management in pregnancy)

Quaternary prevention- avoiding unnecessary or harmful intervention and over-medicalization

Community priorities: assessing community needs, recognizing indicators of human trafficking, and home-based prenatal services

Autosomal Anomalies: Trisomy 21

Autosomal anomalies involve chromosomes 1-22 (not the sex chromosomes)

Trisomy 21 (Down syndrome)- an extra copy of chromosome 21, usually from nondisjunction during meiosis

Associated features: hypotonia, characteristic facial features, and increased risk of cardiac defects and other comorbidities

Risk increases with advanced maternal age

Chromosome structure abnormalities (deletions, translocations) can also cause anomalies

Sex Chromosomal Anomalies & Multifactorial Inheritance

	Turner Syndrome	Klinefelter Syndrome	Triple X Syndrome	XYY Syndrome	Multifactorial Inheritance
Karyotype	45,X X	47,XXY XXX	47,XXX XXX	47,XYY XYY	No specific chromosomal change
Affects	Females	Males	Females	Males	Both males and females
Key Features	• Short stature • Webbed neck • Ovarian insufficiency leading to infertility • May have heart or kidney anomalies	• Tall stature • Gynecomastia • Small, firm testes • Testicular insufficiency leading to infertility • May have learning difficulties	• Often mild or no clinical features • May have subtle learning or language differences • Normal fertility	• Tall stature • Usually normal fertility • Variable learning, speech, or behavioral differences	• Caused by a combination of genetic susceptibility and environmental factors • Not inherited in a predictable pattern
Fertility	Usually infertile	Usually infertile	Usually normall	Usually normal	Varies by condition
Inheritance Pattern	Chromosomal (nondisjunction)	Chromosomal (nondisjunction)	Chromosomal (nondisjunction)|	Chromosomal (nondisjunction) |	Multifactorial (combination of genetic and environmental factors)
Examples / Common Associations	Primary ovarian insufficiency, coarctation of the aorta	Hypogonadism, reduced testosterone, osteoporosis risk	Subtle learning differences, normal lifespan	Often identified incidentally, normal lifespan	Neural tube defects (spina bifida), cleft lip/palate, congenital heart defects
Memory Trick	"Turned away an X" → Missing an X chromosome	"Extra X = Extra height" → Tall male with XXY	"Three X's, 3X tow effects → Often mild symptoms	? "Why are they tall?" (Y = Why) → Tall stature with normal fertility	"Genes + Environment = Risk" → Prevention strategies matter

Unifactorial Inheritance Patterns

Autosomal dominant- one copy of the altered gene is sufficient to cause the condition

Autosomal recessive- two copies are needed; carriers with one copy are typically unaffected

Inborn error example: phenylketonuria (PKU), an autosomal recessive condition detected on newborn screening

X-linked dominant & X-linked recessive- located on the X chromosome; recessive forms more often affect males

Cancer genomics- inherited mutations (e.g., BRCA) can elevate lifetime cancer risk and inform screening and counseling

Preconception & First-Trimester Screening

Preconception- targeted carrier screening (based on ethnicity/family history) vs. expanded carrier screening (broad panel for all)

First trimester- cell-free DNA (cfDNA) screens maternal blood for the common trisomies

Chorionic villus sampling (CVS)- diagnostic placental tissue sample, typically performed around 10–13 weeks

Nuchal translucency testing- ultrasound measurement of the fetal nuchal fold, part of first-trimester risk assessment

Second- & Third-Trimester Screening

Quad screen- maternal serum markers assessing risk for neural tube defects and certain chromosomal conditions

Alpha-fetoprotein (AFP)- elevated levels associated with neural tube defects; low levels associated with chromosomal conditions

Anatomy scan- detailed ultrasound around 18–20 weeks, evaluating fetal structures

Amniocentesis- diagnostic sampling of amniotic fluid used to confirm chromosomal/genetic conditions

Newborn Screening

Blood chemistry (heel-stick panel)- screens for metabolic/genetic conditions such as PKU and other inborn errors of metabolism

Hearing screening- identifies congenital hearing loss before hospital discharge

Critical congenital heart disease screening-pulse oximetry used to detect cardiac anomalies

Early identification allows for early referral and intervention, which significantly improves long-term outcomes

Role of the Nurse in Genetic Care & Counseling

Assessment, identification & referral- recognizing risk factors and referring to genetic counseling or specialists

Impact on family- supporting families through anxiety, grief, or decision-making around results

Education & support- explaining results, options, and next steps in clear, understandable terms

Counseling- genetic counselors help clients understand risk, testing options, and implications for future pregnancies

Ethical & Legal Practice

Beneficence- acting in the client's best interest

Autonomy- respecting the client's right to make informed decisions about their own care

Moral distress- occurs when a nurse knows the ethically correct action but is constrained from taking it

Legal issues- informed consent, scope of practice, and confidentiality of genetic and health information

Care Delivery Models: Family-Centered, Community-Based, Midwifery & Home Birth

Family-centered care- care planned around the needs and preferences of the whole family unit

Community-based care- services delivered where people live, work, and gather, improving access

Midwifery- certified nurse-midwives provide care across low-risk pregnancy, birth, and women's health within their scope of practice

Home births- growing interest; requires careful risk screening, emergency planning, and clear scope-of-practice boundaries

Reproductive Rights

Abortion procedures and reproductive rights involve evolving, state-specific legal frameworks. Nurses must know their state's laws and provide nonjudgmental care

Induced abortions- medically indicated if pregnancy is detrimental to the client’s health, or the fetus has a condition incompatible with life.

Mifepristone versus Misoprostol

Mifepristone

Class	Antiprogestin
Action	Blocks progesterone; lining breaks down, cervix softens
Use	Ends early pregnancy (step 1)
Effects	Nausea, cramping, bleeding
Teach	Report heavy bleeding or fever; follow-up is a must

Misoprostol

Class	Prostaglandin E1
Action	Uterus contracts, cervix dilates
Use	Expels tissue (step 2); labor induction; stops PPH
Effects	Cramping, chills, fever, diarrhea
Teach	Follow route/timing exactly; heavy bleeding expected

Memory hack|

"MifePRIStone PRIStops the pregnancy" - blocks progesterone, stops growth.

"MisoproSTOL STOLPushes it out" — prostaglandin pushes contractions to expel.

Order: mife → miso, always in that order (stop first, then push out).

Postpartum Mental Health

• Postpartum blues -mild, transient mood changes peaking around days 3–5, resolving within about two weeks

• Postpartum depression- persistent sadness, anxiety, or loss of interest lasting beyond two weeks, requiring treatment

• Postpartum psychosis- rare, severe psychiatric emergency with hallucinations or delusions; requires immediate intervention

A postpartum client reports hallucinations and intrusive thoughts of harming her infant. This is the most consistent with which condition? 

Postpartum anxiety disorder

Postpartum blues

Postpartum depression 

Postpartum psychosis

Postpartum psychosis

Which ethical principle describes a client's right to make informed decisions about their own care?

Fidelity

Autonomy 

Justice

Beneficence

Autonomy

Managing an existing condition, such as gestational diabetes, to prevent complications is an example of which level of prevention? 

Secondary prevention 

Tertiary prevention 

Primary prevention

Quaternary prevention

Tertiary prevention 

Phenylketonuria (PKU) is inherited in which pattern?

Autosomal recessive

X-linked recessive

Autosomal dominant

Multifactorial inheritance

Autosomal recessive

Which first-trimester screening test uses maternal blood to detect the common trisomies?

Amniocentesis

Chorionic villus sampling (CVS)

Cell-free DNA testing (cfDNA)

Nuchal translucency testing

Cell-free DNA testing (cfDNA)

Trisomy 21 is also known as which condition?

Turner Syndrome

Klinefelter Syndrome

Down Syndrome

Edwards Syndrome

Down Syndrome

Mild mood changes that peak around postpartum days 3-5 and resolve within about two weeks without treatment are known as:

Postpartum psychosis

Postpartum depression

Postpartum anxiety disorder

Postpartum blues

Postpartum blues

A client with a 45,X karyotype presenting with short stature and a webbed neck most likely has which condition?

Triple X Syndrome

Klinefelter Syndrome

Turner Syndrome

XYY Syndrome

Turner Syndrome

Which nursing action is most appropriate when screening for intimate partner violence (IPV) during pregnancy?

Screen the client privately each trimester using direct, nonjudgmental questions.

Wait until physical signs of abuse are present before asking about IPV.

Avoid asking about IPV unless the client initiates the conversation.

Ask the client's partner to remain in the room to provide additional information.

Screen the client privately each trimester using direct, nonjudgmental questions.

Which prenatal test samples placental tissue and is typically performed in the first trimester (10-13 weeks)?

Quad Screen 

Amniocentesis

Chorionic villus sampling (CVS)

Cell-free DNA testing (cfDNA)

Chorionic villus sampling (CVS)