Prenatal History Flashcards
Measurements in the 1st Trimester
Crown-to-Rump
Measurements in the 2nd & 3rd Trimester (note most accurate)
Head circumference (most accurate)
abdominal (2nd)
biparietal (3rd)
Femur (4th)
Assessment of the Anterior Vascular Capsule of the Lens
to estimate GA must be done in the first 24-48 hours of life
Hyaloid system & tunica vasculosa lentis - transient embryonic systems invade the developing eye to nourish during systems development
using opthalmascope set between +6 and +12
Ballard: posture
flexion increases with advancing gestational age, lower precedes upper flexion
Ballard: Square Window
angle between forearm and palm is measured
angle decreases with advancing GA
Ballard: Arm Recoil
supine, with arms flexed for 5 seconds then allowed to recoil, degree of flexion & strength of recoil measured
sluggish response w/ little to no flexion - low score
score of 4 requires fist to touch face
Ballard: popliteal angle
evals passive flexor tone in the knee (knee to ear)
angle decreases with advancing gestational age (resistance increases, flexibility decreases)
Hypoglycemia in SGA infants
hypoglycemia r/t decreased glycogen stores and decreased gluconeogenesis
Evaporation
heat loss when water evaporates from wet skin
Radiation
heat loss to surrounding surfaces not in direct contact with the infant
Convection
Heat is lost to air currents
conduction
heat lost to surfaces in direct contact with the neonate
Nonshivering thermogenesis
heat production through oxidation of brown fat
Maternal Medications: Aspirin
hemorrhage, premature closure of PDA
Maternal Medications: Ibuprofen
decreased amniotic fluid volume when used for tocolysis (to delay delivery), small risk of premature PDA closure
Maternal Medications: Codeine
NAS
Maternal Medications: Indomethacin
premature PDA closure, pulmonary artery hypertension
Maternal Medications: Meperidine
respiratory depression, peaks 2-3 hours after maternal dose
Maternal Medications: prophoxyphene
NAS, fetal anomalies
Maternal Medications: Phenobarbital
withdrawal symptoms, hemorrhagic disease
Maternal Medications: phenytoin (dilantin)
hemorrhagic disease, fetal hydantoin syndrome
fetal hydantoin syndrome
microcephaly, cleft lip/palate, hypoplastic digits
a characteristic facial appearance with midface hypoplasia, low nasal bridge, ocular hypertelorism, and an accentuated cupid’s bow of the upper lip
growth deficiencies
distal digital hypoplasia and of major malformations, particularly clefts of the lip and palate and cardiovascular anomalies,
Maternal Medications: Valproic acid
myelomeningocele, facial and cardiac anomalies
Maternal Medications: ribavirin
teratogenic, embyolethal in animals
Maternal Medications: zidovudine
potential fetal bone marrow suppression, decreases risk of perinatal HIV transmission
Maternal Medications: angiotensin converting enzyme inhibitors
neonatal bradycardia, hypoglycemia
Maternal Medications: beta blockers
hypoglycemia, bradycardia
Maternal Medications: calcium channel blockers
decreased maternal BP = decreased placental blood flow
Maternal Medications: diazoxide
hyperglycemia
Maternal Medications: digoxin
fetal toxicity with maternal OD
Maternal Medications: hydralazine
deceased placental blood flow
Maternal Medications: methyldopa
clinical insignificant drop in neonatal BP
Maternal Medications: mag sulfate
respiratory depression, hypotonia, hypermagnesemia, decreased bowel movement
Maternal Medications: terbutaline
hypoglycemia
Maternal Drug exposure: Alcohol
Fetal alcohol syndrome
Fetal alcohol syndrome
- At birth, infants with fetal alcohol syndrome (FAS) can be identified by:
- small stature
- microcephaly,
- microphthalmia (small eyes)
- short palpebral fissures
- epicanthal folds
- a small or flat midface
- a flat elongated philtrum,
- a thin upper lip,
- a small chin
- Abnormal palmar creases
- cardiac defects
- joint contractures may also be evident.
Maternal drug exposure: Amphetamines
withdrawal, prematurity, fetal loss, infant death, low birth weight, SGA
Maternal drug exposure: Cocaine
low birth weight, microcephaly, prematurity, abruption w/ possible asphyxia, shock, cerebral hemorrhage, stillbirth
Maternal drug exposure: Heroine
low birth weight, SGA, withdrawal, impaired postnatal growth, behavior disturbances
Maternal drug exposure: marijuana
decreased fetal growth, increased risk of nonlymphoblastic leukemia in childhood, ADHD
Maternal drug exposure: Methadone
increased birth weight compared to heroine, drug withdrawal (worse than heroine alone)
Maternal drug exposure: PCP
irritability, jitteriness, hypotonia, poor feeding
Maternal drug exposure: tobacco
decreased birthweight by 175-250g, increased prematurity rate, increased rate of premature ROM, placental abruption, previa, increased fetal death, irritability
Alpha Fetoprotein
measured at ~`16-20 weeks
made in liver of developing fetus
increased AFP can indicate neural tube defects or other congenital chromosomal defects
Prophylactic Rho (D) Immune globulin (Rhogam) adminstration timing
28 weeks
GBS screening (timing)
35-37 weeks
Maternal Conditions: asthma
increased rates of prematurity, toxemia, perinatal loss
Maternal drug exposure: cystic fibrosis
prematurity, IUGR, fetal loss
mothers have trouble absorbing nutrients, at higher risk of GDM, decreased lung function (fetal hypoxia)
maternal conditions: hypertension, preE
uteroplacental insufficiency, abruption, fetal loss, IUGR, thrombocytopenia, neutropenia (theory that insufficiency causes bone marrow suppression)
Maternal conditions: diabetes
- hypoglycemia,
- hypocalcemia
- macrosomia
- polycythemia
- hyperbilirubinemia
- birth trauma
- heart defects
- small left colon syndrome
- RDS
Maternal conditions: hypoparathyroidism
fetal hypocalcemia, neonatal HYPERparathyroidism. - check this one
Maternal conditions: hyperparathyroidism
neonatal hypocalcemia, neonatal hypoparathyroidism
elevated maternal calcium → transplacental transport of calcium → fetal hypercalcemia → suppresses fetal PTH levels → leads to neonatal hypoparathyroidism
Maternal conditions: hyperthyroidism (graves)
fetal and neonatal hyperthyroidism, IUGR, prematurity, CHF, tachycardia
Maternal conditions: PKU
mental retardation, microcephaly, congenital heart defects
Maternal conditions: fetal platelet antigen sensitization
thrombocytopenia, CNS hemorrhage
Maternal conditions: Rh or ABO incompatability
jaundice, anemia, hydrops fetalis
Maternal conditions: Chlamydia
conjunctivitis, pneumonia
TORCH infections: CMV
- IUGR
- microcephaly
- hepatosplenomegaly
- hydrocephalus
- periventricular brain calcifications
- jaundice
- blueberry muffin rash
- sensorineural hearing loss
- chorioretinitis
TORCH: Toxoplasmosis
- hepatosplenomegaly
- hydrocephalus
- diffuse brain calcifications
- bony abnormalities
- skin rash, petechiae
- jaundice
- sensorineural hearing loss
-
cataracts
- lymphadenopathy
- anemia
- thrombocytopeia
- pneumonitis
TORCH: Rubella
- cardiac: PDA, Pulmonary Stenosis
- mental retardation
- bony abnormalities (radiolucent bone disease)
- cardiac abnormalities
- blueberry muffin rash (dermal erythropoiesis)
- jaundice
- SN hearing loss
-
cataracts, glaucoma, micropthalmos
-
maternal skin rash
- thrombocytopenia
-
maternal skin rash
TORCH: HSV
- cataracts
- optic atrophy
- chorioretinitis
- keratoconjunctivitis
- liver dysfunction
- vesicles
- bullae
- ulcers
TORCH: Syphillis
- leptomeningitis
- osteochondritis
- psuedoparalysis
- periostitis
- edema
- desquamation rash
- snuffles
- lymphadenopathy
- hemolytic anemia
- thrombocytopenia
-
snuffles
*
TORCH: VZV
- hydrocephalus
- calcifications
- microphalmos
- cataracts
- chorioretinitis
- optic atrophy
- anisocoria
- limb hypoplasia
- absent DTR
- cicatricial skin lesion
- hypopigmentation
TORCH: ZIKA
lissencephaly, chorioretinal atrophy, SN hearing loss, congenital contractures
TORCH: Toxo workup
toxo IgM, IgG, IgA, CSF/Urine PCR, blood PCR
TORCH: Rubella workup
Rubella IgM
TORCH: CMV Workup
CSF/Urine PCR, Saliva PCR within 2-3 weeks
TORCH: HSV Workup
Surface Cultures, Serum PCR, CSF PCR
TORCH: Syphillis workup
Serum VDRL, CSF VDRL
TORCH: VZV workup
VZV IgG, IgM, CSF PCR
TORCH Treatment: Toxo
pyrimethamine, sulfadiazine, folinic acid x 1 year
TORCH Treatment: Rubella
Supportive
TORCH Treatment: CMV
ganciclovir or
valganciclovir
x 6 months
TORCH Treatment: HSV
Acyclovir x 14 days (SEM) or 21 days (dissem) then oral x 6 months (suppressive)
TORCH Treatment: Syphillis
Penicillin G x 10 days
TORCH Treatment: VZV
VZIG within 72 hours of birth, acyclovir x 10 days
Maternal Conditions: SLE (Lupus)
fetal death, SAB, heart block, neonatal lupus, thrombocytopenia, neutropenia, hemolytic anemia, endocardial fibrosis