Congenital Disorders Flashcards
What is the new system for medication in pregnancy?
PLLR Rule
What substances are included in maternal substance use?
- Tobacco use
- Prescription drug use- SSRIs, anticonvulsants, retinoids
- Marijuana, cocaine, heroin, hallucinogens, inhalants, prescription psychotherapeutics used non-medically, EtoH
What percent of pregnant opioid using women reported their pregnancy was unintended?
86%
What is the definition of neonatal abstinence syndrome?
- Neonate has intrauterine exposure to substance
- Depends on drug, length of use, amount used
- S/Sx of withdrawal apparent
- Baby will stay in hospital for treatment
What state leads the nation in babies with NAS?
West Virginia
What is the number one drug shown on drug screen in WV at birth?
THC
How is maternal substance use screened for?
- Initial presentation at first prenatal visit ideal with repeat screening at every trimester and periodically
- Begin with questions about lawful substances, followed by misuse of OTC meds, next Rx drugs, and so on
- Determine route of administration (PO, IN, SQ, IV)
- Urine screening most common to assess mother’s use
What prescription medications have adverse effects on baby?
- Anticonvulsants
- Retinoids - isotretinoin (accutane)
Possible fetal outcomes if anticonvulsants used prenatally
- Small head circumference
- Anteverted nares
- Cleft lip/palate
- Distal digital hypoplasia - specifically with phenytoin
- Spina bifida - specifically with valproic acid
Signs and symptoms of maternal retinoid use
- Developmental toxicity
- Miscarriage
- CNS malformations
- Congenital heart defects
- TEF
- small or absent ears
Signs and symptoms of prenatal SSRI use
- Symptoms of NAS
- CNS signs: irritability, seizure
- Motor signs: agitation, tremor, hypertonia
- Respiratory: increased respirations, nasal congestion
- GI: diarrhea, vomiting, feeding difficulty
How is tobacco use transferred to baby? What is tobacco use associated with?
- Through placenta
- Low birth weight, infant’s ability to be comforted
- Exaggerated startle reflex and tremor
What does ETOH use during pregnancy cause?
Fetal alcohol syndrome
What is included in fetal alcohol syndrome?
- Short stature
- Poor head growth - intrauterine and postnatal
- Developmental delay
- Midface hypoplasia
- Poorly developed philtrum, thin upper lip, narrow palpebral fissures, short nose with anteverted nostrils
- Cardiac anomalies, genital anomalies, neural tube defects
- Neurobehavioral: poor judgement, inappropriate social interactions
How is FAS diagnosed?
- Maternal history and clinical findings. No blood test
Signs and symptoms of marijuana use during pregnancy
- Increased risk of depression in childhood
- Hyperactivity
- Impulsivity
- Inattention
- Delinquency
Signs and symptoms of opiate use during pregnancy
- Most drastic effect on mother and fetus
- Withdrawal symptoms
- Low birth weight
- Prematurity
- IUGR
- Heroin withdrawal at 24 hours after birth and peaks in 48-72 hours, but may be delayed as long as 6 days
How long may withdrawal from benzos/barbiturates in neonates be delayed?
2 weeks
After crossing the placental barrier, why do illicit drugs impact the fetus so much?
Immaturity of renal function and enzymes used in metabolism
Signs and symptoms of neonatal abstinence syndrome
- High-pitched cry
- jitteriness
- tremors
- convulsions
- sweating, fever
- mottling
- Excessive sucking and rooting
- Poor feeding
- Vomiting and diarrhea
How is neonatal abstinence syndrome diagnosed?
- Blood tests
- Urine toxicology
- Meconium analysis
- Cord blood
- Hair
What is the scoring criteria used for neonatal abstinence syndrome and when is it considered withdrawal?
- Finngan score
- 3 8s in a row
When should NAS scoring occur?
- First score two hours after birth or admission
- All signs and symptoms observed during scoring interval included in point-total for that period
How would a high pitched cry be used to score Finngegan?
- High pitched at peak - 2
- High pitched throughout - 3
- Scored if crying is prolonged
How would sleep be scored using Finnegan?
- Score longest uninterrupted interval of sleep
- Scoring for premature infant on 3 hour feeds: 1 if <2 hours, 2 if <1 hour, 3 if does not sleep
How would Moro reflex be scored according to Finnegan’s
- Hyperactive- pronounced jitteriness of hands
- Markedly hyperactive- jitteriness/clonus of hands/feet
What happens if infant score during any scoring interval >8
- Scoring increased to 2 hourly and continued for 24 hours from last total score of 8 or higher
If pharmacotherapy is not needed, how frequently is the infant scored for the first 4 days of life
4 hour intervals
Treatment for neonatal abstinence syndrome
- Opioids - 1st line (morphine or methadone)
- Phenobarbital - 2nd line for opioid withdrawal seizure activity and polydrug exposure
- Fentanyl used as an analgesic in NICU administered with morphine
Treatment of mom for maternal substance use
- Prevention of symptoms with methadone or buprenorphine (Subutex/Suboxone)
- High dose of benzodiazepine use should undergo medical detoxification to minimize or prevent withdrawal symptoms
- Test for STDs at initial screen and repeat 3rd trimester
Which substance use treating drug is better for retaining mom in treatment? Which is better for baby?
- Better for mom: Methadone
- Better for baby: Suboxone –> lower rates of withdrawal, higher birth weights
FDA class of drugs in pregnancy is now know as what?
PLLR
How are most drug screens obtained in pregnant women?
Urine
A baby born with small or absent ears may have had a mom taking what?
Accutane
Class of illegal drugs with the worse outcome for the baby?
Opiates
First line of meds for opioid withdrawal in babies?
Methadone
What is general guidance for immunizations in pregnancy?
- Live vaccines contraindicated
- Cautioned to be given to children of women who may be or may become pregnant within a 4 weeks period of receiving the vaccine
What vaccines can’t be given during pregnancy?
- Influenza LAV
- MMR
- Varicella
What is aneuploidy?
Abnormal number of chromosomes
What conditions are considered aneuploidy?
- Trisomies 13,18, 21: presence of extra chromosome in some or all of body cells
- Klinfelter syndrome (47 XXY)
- Monosomies: Turner syndrome (45, X)
What are autosomal dominant genetic disorders that impact neonates?
Marfan’s syndrome and achondroplagia
What are common autosomal recessive congenital disorders?
Cystic fibrosis and PKU
What are common X-linked recessive congenital disorders
Fragile X syndrome
What can genetic counseling referrals be given for?
- Planning to become pregnant
- During pregnancy
- Caring for children
Candidates for prenatal screening or diagnostic testing?
- All women should be offered aneuploidy screening in early pregnancy
- Quadruple screening blood test (b-hCG, AFP, inhibin A, estriol)
- Option of invasive diagnostic testing (choroid villus sampling or amniocentesis instead of screening, regardless of maternal age if high risk of having offspring with Down syndrome or aneuploidies
What are reasons a woman would be considered at high risk for offspring with down syndrome or other aneuploidies?
- Positive screening test for common trisomies
- A previous pregnancy complicated by fetal trisomy
- Current pregnancy with at least one major or 2 minor fetal structural abnormalities
- Chromosomal disorder or a partner with one
Why is screening for aneuploidies and other congenital disorders warranted?
- Burden of disease can be significant
- Accurate prenatal tests readily available
- Gives parents options: opportunity to plan for birth of affected child or termination
What is the most common abnormalities of chromosome number?
Trisomy 21 (Down syndrome
What percent of infants with trisomy 21 have cardiac abnormalities?
40%
How does trisomy 21 impact fertility?
- Adult women fertile with 1/3 offspring born with DS
- Males infertile
Signs and symptoms of trisomy 21
- Normal birth weight
- Hypotonia
- Flattened occiput, nasal bridge
- Upslanting of palpebral fissures, epicanthal folds
- Large, protruding tongue
- Single palmar creases and wide gap between first and second toes
- Cognitive delay
- Congenital heart disease (1/3-1/2)
- GI anomalies: feeding issues and consipation, up to 30% with esophageal and duodenal atresia, celiac disease
- Hypothyroidism
- Polycythemia at birth with prolonged jaundice
- 12-20 fold increase of leukemia
Diagnosis of trisomy 21
- Quad screen on all pregnancies between week 14-18
- Maternal AFP low in 50% of trisomies
- Unconjugates estriol (low)
- Inhibin A (high)
- hCG (high)
Who is the quad screen recommended for?
- Family history of birth defecs
- 35 +
- Used possible harmful medications or drugs during pregnancy
- Have diabetes and use insulin
- Had a viral infection during pregnancy
- Have been exposed to high levels of radiation
Treatment for trisomy 21
- Screening for autoimmune disorders - celiac, thyroid
- Surgical intervention for cardiac and GI abnormalities
- Developmental support - special education - IEPs, therapies - PT, speech, occupational
Name 3 vaccines you would not give a pregnant woman
- MMR
- Living flu
- Varicella
What 4 blood tests are in the quad screen for pregnant women?
Maternal AFP, unconjugated estriol, inhibin A, hCG
What is the most common abnormality of chromosome # in the world?
Trisomy 21
What is a moms chance of having a trisomy 21 child at the age of 45
1/30
What is the biggest risk factor at birth for a baby born with DS?
Heart defects
What autoimmune/blood disorders might you see with DS?
Leukemia, celiac, thyroid
What is unique about trisomy 21 hands? Their tongues?
Single palmar crease; big, wrinkled tongue
What are common outcomes of trisomy 18?
- Spontaneous abortion
- 2% survival to 1 year
Which sex more commonly has trisomy 18?
Female
What are features of trisomy 18?
- Heart defects (95%)
- Dysmorphic features
- SGA
- Overlapping fingers
- Rocker-bottom feet
Symptoms of trisomy 18
- Clenched firsts
- Low birth weight
- Kidney problems
- Congenital heart disease
- Feet with rounded bottom
- Mental deficiency
- Small head and jaw
- Underdeveloped fingernails
- Unusually shaped chest
- Hole, split, or cleft in iris
Signs of trisomy 18
- Unusually large uterus
- Small placenta
- Extra amniotic fluid
- Small breast bone
- Abnormal fingerprint patterns