Oligohydramnios (Low Amniotic Fluid)
Too little amniotic fluid surrounding baby, which can affect development and delivery.
Affects: 4% of pregnancies, 12% of post-term pregnancies
Overview
Oligohydramnios is a condition where there's too little amniotic fluid surrounding the baby. Amniotic fluid cushions the baby, allows movement for development, regulates temperature, and protects the umbilical cord.
Causes include placental problems, ruptured membranes, post-term pregnancy, maternal dehydration, and fetal urinary tract abnormalities. Severity and timing affect outcomes and treatment.
Management depends on gestational age and severity. In the third trimester, if baby is doing well, increased hydration may help. If baby is near term or showing distress, delivery may be recommended.
🩺 Symptoms
- •Mother: Measuring small for gestational age
- •Mother: Leaking fluid (if membranes ruptured)
- •Mother: Feeling every fetal movement intensely
- •Usually discovered on ultrasound
- •Decreased fetal movement sometimes
🔍 Causes
- →Placental insufficiency (placenta not working well)
- →Ruptured membranes (water breaking)
- →Post-term pregnancy (over 42 weeks)
- →Fetal urinary tract problems
- →Intrauterine growth restriction
- →Multiple pregnancy with twin-to-twin transfusion
- →Maternal dehydration
- →Certain medications (NSAIDs, ACE inhibitors)
- →Birth defects
- →Chromosomal abnormalities
⚠️ Risk Factors
- •Post-term pregnancy
- •Preeclampsia
- •Diabetes
- •Lupus
- •Chronic high blood pressure
- •Multiple pregnancy
- •Birth defects
- •Previous pregnancy with oligohydramnios
🔬 Diagnosis
- →Ultrasound measuring amniotic fluid index (AFI)
- →AFI less than 5cm indicates oligohydramnios
- →Or single deepest pocket less than 2cm
- →Checking for rupture of membranes
- →Fetal anatomy scan to rule out abnormalities
- →Doppler ultrasound to check blood flow
💊 Treatment
- ✓Depends on gestational age and severity
- ✓Maternal hydration (drinking more water)
- ✓IV fluids if severe
- ✓Bed rest
- ✓Amnioinfusion (adding fluid during labor)
- ✓Close fetal monitoring
- ✓Delivery if near term or baby in distress
- ✓Treat underlying cause if identified
- ✓Serial ultrasounds to monitor fluid levels
🛡️ Prevention
- →Stay well hydrated
- →Regular prenatal care
- →Managing chronic conditions
- →Avoid certain medications
- →Report any fluid leaking
⚠️ Potential Complications
- !Early pregnancy: Birth defects, miscarriage
- !Second trimester: Preterm birth, growth restriction
- !Third trimester: Difficult labor, cord compression
- !Musculoskeletal abnormalities
- !Lung underdevelopment
- !Stillbirth
- !Increased C-section risk
- !Fetal distress during labor
🚨 When to Call Your Doctor
Contact your healthcare provider immediately if you experience:
- ⚠Leaking fluid
- ⚠Decreased fetal movement
- ⚠Severe abdominal pain
- ⚠Contractions
- ⚠Any concerns about baby
Related Conditions
This information is for educational purposes and should not replace medical advice. Always consult your healthcare provider for personalized guidance.