What is the definition of pulsatile umbilical venous flow in twin-twin transfusion syndrome? - 21/08/11
, Eftichia V. Kontopoulos, MD
Reprints: Rubén A. Quintero, MD, Department of Obstetrics and Gynecology, University of South Florida, 2A Columbia Drive, #6053, Tampa, FL 33606Résumé |
Objective |
The aim of the study was to derive an objective definition of pulsatile umbilical venous flow (PUVF).
Study Design |
Pulsed Doppler waveform analysis of the umbilical vein was performed in stages III and IV twin-twin transfusion syndrome (TTTS) patients. In patients with PUVF, the umbilical vein maximum (Vmax) and the umbilical vein minimum velocity (Vmin) and the resistance index for the umbilical vein (UVRI) = (100 × [Vmax − Vmin]/Vmax) were assessed.
Results |
PUVF was noted in 130 of 226 stages III and IV TTTS patients. Digital images were available for analysis in 65 of 130 patients (50%). The minimum UVRI associated with PUVF was 16% for stages III and IV TTTS. There was a trend for increasing UVRI with stage (P = .052). Stage IV patients were more likely to have an UVRI greater than 30% (P = .02).
Conclusion |
PUVF can be defined as an UVRI greater than 15%. A scale definition of PUVF may further facilitate assessment of the degree of fetal hemodynamic compromise.
Le texte complet de cet article est disponible en PDF.Key words : fetus, pulsatile, pulsatility, Quintero staging, resistance index, twin-twin transfusion syndrome, umbilical vein
Plan
| Cite this article as: Russell Z, Quintero RA, Kontopoulos EV. What is the definition of pulsatile umbilical venous flow in twin-twin transfusion syndrome? Am J Obstet Gynecol 2008;199:634.e1-634.e4. |
Vol 199 - N° 6
P. null - décembre 2008 Retour au numéro
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