According to Quintero staging of TTTS, Stage III is defined by:

• A Polyhydramnios in recipient and oligohydramnios in donor, with normal Doppler
• B Hydrops fetalis in either twin
• C Death of one or both twins
• D Critically abnormal Doppler velocimetry: absent or reversed end-diastolic flow in umbilical artery, reversed flow in ductus venosus, or pulsatile flow in umbilical vein ✓

Explanation

Quintero staging of TTTS: Stage I = polyhydramnios (recipient, DVP ≥8 cm) and oligohydramnios (donor, DVP ≤2 cm), bladder visible in donor; Stage II = donor bladder not visible ('stuck twin'); Stage III = critically abnormal Doppler in either twin (absent/reversed UAEDF, reversed DV 'a' wave, pulsatile umbilical vein); Stage IV = hydrops in either twin; Stage V = demise of one or both twins. Stage III represents cardiovascular decompensation and is the threshold for intervention in most centres.

Reference: Williams Obstetrics, 26th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.