Non-stress test: a fifteen-year clinical appraisal

During a 15-year period (Jan. 1981 to Dec. 1995) a total of 14,950 patients were delivered in our hospital. Throughout this period fetal heart rate monitoring during labor was increased from 10% up to 85%. The overall antepartum testing was also increased from 8 to 15%. In patients with significant complications in pregnancy the mean number of non-stress tests (NST's) per patient was 1.8 tests in 1981 to 4.8 tests in 1995. The average perinatal mortality was 15.2/1000, with a gradual decline. In patients who were subjected to antepartum testing the previous rate was only 3.7%/1000. Our conclusion is that the use of antepartum and intrapartum cardiotocography has increased during the last 15 years in our clinic. As a consequence a considerable decrease was noted in the overall perinatal mortality. The non-stress test is still today the first line of antepartum fetal assessment.