حساسيت و ويژگي تست بدون استرس در موارد كاهش حركت جنين و كاهش حجم مايع آمينوتيك

THE SENSITIVITY AND SPECIFICITY OF NST IN CASES WITH DECREASED FETAL MOVEMENT OR DECREASED AMNIOTIC FLUID VOLUME

Non Stress test is the most common well being test before delivery that is done in probable cases of fetal distress. Decision for continuation or terminating the pregnancy is based on the result of NST along with some other criteria. The aim of this study was to determine the sensitivity and specificity of NST in cases with decreased fetal movement or decreased amniotic fluid volume on the basis of sonography, report. This cross-sectional study was carried out on a group of 120 women who had referred to the Niknafs clinic of Bahonar hospital in Kerman. Mean age of patients was 25.7 ± 4.8 years old, mean gravidity and pariety was 2.3 ± 1.3 and mean gestational age was 40.3- 1.1 weeks (38-42 week). 1.1(84.2%) of mothers were complaining of decreased fetal movement and 61% of them showed decreased amniotic fluid in their sonographies. The result of NST in 64.1% of patients was nonreactive and in 35.9% was reactive. In 41.7% of cases of fetal distress was during labor or delivery of which 94.1% had nonreactive NST. The sensitivity and specificity of NST were respectively 89% and 74.5% in cases that decreased A.F had been reported in sonographies, and in cases with compliment decreased fetal movement by mothers. The sensitivity and specifity of NST were 68% and 32% respectively.