The biophysical profile (BP) is a diagnostic method of the fetal surveillance of excellent sensibility and especificity. We introduce a modification of the scoring in which we replace the NST for two `bonus point' to fetus which reach the four ecographic criteria before 20 minutes of test. We studied 143 modified BP of 71 fetus of high risk pregnancy, the modified PB has realized in the week before delivery. 95% had score 8 or 10, 5% had 4 or 6 points, the fetus with low scoring (4 or low) had pregnancy interruption. We noted if the fetus don't reach the ecographic criteria in first 20 minutes, anyone had done in 30 minutes. Only three fetus had Apgar score low 7, and we didn't have perinatal deaths. Modified BP is useful in fetal surveillance, this modification is more efficient in human and technological sources
