Fetal Doppler Study

📝 Fetal 1 🧾 Early First Trimester (GS) 2 🧾First Trimester (embryo 6-10w 6d) 3 🧾 First Trimester (11-13w 6d) 4 🧾 Second Trimester 5 🧾 Third Trimester 6 🧾 NT Screening 7 🧾 NT Screening Specific Dopler 8 🧾 Fetal Anomalies Screening / TIFA 9 🧾 TIFA-Specific Fetal Doppler 10 🧾 Doppler Studies 11 🧾 Biophysical Profile / NST 12 🧾 RMT Assessment

Diagnos

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COMPLETE FETAL DOPPLER DIAGNOSTIC FINDINGS

1 NORMAL FETAL CIRCULATION

📄 UA PI normal + MCA PI normal → CPR normal.
Normal fetoplacental and cerebral circulation.
No Doppler evidence of fetal compromise.

2 UTEROPLACENTAL DYSFUNCTION

📄 Uterine artery PI ↑ with normal UA & MCA
Impaired placentation.
Increased risk of preeclampsia / FGR.

3 PLACENTAL INSUFFICIENCY

📄 UA PI ↑ + MCA PI normal → CPR ↓
Increased placental vascular resistance

4 FETAL HYPOXIA (BRAIN-SPARING EFFECT)

📄 UA PI ↑ + MCA PI ↓ → CPR ↓
Cerebral vasodilatation noted
Adaptive fetal response to hypoxia

5 LATE-ONSET FGR

📄 UA PI normal + MCA PI ↓ → CPR ↓
Late-onset placental dysfunction
Cerebral redistribution with preserved UA flow

6 EARLY-ONSET FGR

📄 UA PI ↑ + MCA PI normal / ↓ → CPR ↓
Placental insufficiency–dominant pattern

7 SEVERE PLACENTAL INSUFFICIENCY

📄 UA AEDF → Critical placental resistance

📄 UA REDF → Severe placental failure

8 ADVANCED FETAL COMPROMISE

📄 UA AEDF / REDF + MCA PI ↓
Abnormal ductus venosus waveform
Absent / reversed DV A-wave
High risk of fetal acidosis / IUFD

9 TERMINAL FETAL DECOMPENSATION

📄 Pulsatile umbilical venous flow

📄 Combined UA + DV + UV abnormalities

10 FETAL ANEMIA

📄 MCA PSV >1.29 MoM → Mild anemia

📄 MCA PSV >1.5 MoM → Moderate anemia

📄 MCA PSV >1.55 MoM → Severe anemia

11 FETAL POLYCYTHEMIA

📄 MCA PSV <1.0 MoM
Increased blood viscosity

12 TAPS (TWIN ANEMIA–POLYCYTHEMIA SEQUENCE)

📄 Donor twin: MCA PSV >1.5 MoM

📄 Recipient twin: MCA PSV <1.0 MoM

13 TTTS (TWIN-TO-TWIN TRANSFUSION SYNDROME)

📄 Donor: UA PI ↑ + oligohydramnios

📄 Recipient: Cardiac strain + abnormal DV

14 SELECTIVE FGR (TWINS)

📄 Type I – Persistent positive UA EDF

📄 Type II – Persistent AEDF / REDF

📄 Type III – Intermittent AEDF

15 FETAL CARDIAC FAILURE / HYDROPS

📄 Abnormal DV + UV pulsatility
Elevated central venous pressure

16 OVERALL DOPPLER PROGNOSIS

📄 Favorable fetal hemodynamics

📄 Compromised fetal circulation

📄 Severe fetal compromise – urgent intervention advised

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Patient Info

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NORMAL VARIANT
🧾 Normal (HSG)
🧾 Myometrial Folds