IUGR Flashcards
Define IUGR
Birth weight <10% percentile for given GA due to pathological process = increase morbidity and mortality
SGA vs IUGR
- SGA: <10th centile but no pathological cause
- IUGR: <10th centile with pathological (placental insufficiency, chromosomal)
What are the short term risk for IUGR
- meconium aspiration, asphyxia
- polycythemia
- hypothermia\hypoglycemia
- RDS
What are the long term risk for IUGR
Conditions DM, HTN, Atheroscleoris
What are the maternal causes for IUGR
- diseases: HTN, APS, CVD, CHD, DM, thrombophilia, pulmonary
- behavior: smoking, drug, alcohol, poor nut
What are the fetal & placental causes for IUGR
Fetus
- infection (TORCH);
- chromosomal conginital anomalies
Placenta
- placental insufficiency (HTN, Renal)
- placenta\cord abnomalities
What is the most common infection to cause IUGR?
CMV
What are the types of IUGR?
- Symmetrical: abdomen + head = both small
- asymmetrical: abdomen is relatively smaller than head (sparing effect)
The sparing effect is a sign of
IUGR
When does symmetrical IUGR develops? And what does it indicate
- Early
- infections - conginital anomalies
If the ratio of head to abdomen is high this is?
Assymetrical
Symmetrical it’s equal but the overall size is small
What does asymmetrical IUGR indicate
Placental insuffiecncy
What is the most important thing in IUGR
Dating
How to determine GA using US
CRL in 11-13 weeks
What are the red flags for IUGR
“Suspicions”
1- fundal height is less by 3cm
2- abnormal triple screening
3- abnormal uterine artery doppler
4- high risk mother
