CHOP Fetal CV Profile Score
This is an online calculator modeled after the scoring system proposed in:
Rychik J, Tian Z, Bebbington M, et al. The twin-twin transfusion syndrome: spectrum of cardiovascular abnormality and development of a cardiovascular score to assess severity of disease. Am J Obstet Gynecol 2007;197:392.e1-392.e8.
The score rates various indices of both donor and recipient twins' cardiovascular performance/remodeling, as measured by fetal echo.
The only calculation involved is the summing of the various individual scores and the subsequent grading of of the total score from '1' to '4'.