In order to evaluate the predictive value of maternal plasma fibronectin (FN) concentration at 24-34 weeks on fetal intrauterine growth retardation (IUGR), a prospective double-blinded study was performed. The materna...In order to evaluate the predictive value of maternal plasma fibronectin (FN) concentration at 24-34 weeks on fetal intrauterine growth retardation (IUGR), a prospective double-blinded study was performed. The maternal plasma FN concentrations were measured by using a rate nephelometric procedure in the 130 initial normal nulliparous pregnant woman at 24-34 gestational weeks. The outcome of pregnancies and birth weight of their infants were followed up. IUGR was defined as that the birth weight was less than the 10th percentile for gestational age. The receiver operating characteristic curves and predictive values of FN predicting on outcome of pregnancy with IUGR were analyzed. The results showed that: (1) In a cohort of 130 initially normal nulliparous pregnant women, IUGR occurred in 14 cases during the follow-up; (2) The plasma FN levels in the women with IUGR (467.58±104.43 mg/L) were significantly higher than in the normal control group (299.44±105.55 mg/L, P<0.01). However, there was no significant difference in the mean maternal age, gravidity, sampling gestational ages, delivering gestational ages between the two groups (P>0.05); (3) The areas under ROC curve for predicting the outcome of pregnancy in IUGR was 0.893; (4) At the cut point of 475 mg/L FN level, the sensitivity, specificity, positive predictive value, negative predictive value and Kappa index for predicting the outcomes of pregnancy in IUGR were 57.14 %, 95.69 %, 61.54 %, 94.87 %, 0.5455 respectively. It was concluded that the maternal plasma FN might be used as an earlier predictor for screening of IUGR.展开更多
Objective: To determine the value of fetal fibronectin (FFN), cervical length (CL) measurement and their combination as binary predictors for preterm birth (PB) in women with preterm labour (PTL) between 24 + 0 and 34...Objective: To determine the value of fetal fibronectin (FFN), cervical length (CL) measurement and their combination as binary predictors for preterm birth (PB) in women with preterm labour (PTL) between 24 + 0 and 34 + 0 weeks. Methods: One hundred fifty-nine patients with signs of PTL (singleton pregnancies (SP) = 125, twin pregnancies (TP) = 34) were evaluated in a retrospective study. Inclusion criteria were contractions > 4/20 min, intact membranes, no bleeding. The cut-off was ≥50 ng/ml for FFN and ≤20 mm for CL measured by transvaginal ultrasound. The primary outcome variable was delivery within 7 days from admission. Results: We evaluated 125 SPs and 34 TPs. In SPs, both methods had a sensitivity of 80%;the specificity was 82% for FFN, and 50% for CL. For the combination of both tests sensitivity was 80% and specificity 88%. In TPs, the sensitivity of both tests was lower (FFN 33%, CL 67%) but the combination of both tests represented the highest result for specificity (77% compared to 68% for FFN alone and 32% for CL alone). Conclusion: The combination of FFN and CL in PTL results in a significant higher specificity in SPs. In TPs the performance of the tests is less accurate.展开更多
胎膜早破（premature rupture of membranes,PROM）是常见的产科并发症,主要并发症是母婴感染,易继发早产、难产、胎儿窘迫等不良妊娠结局,处理不当可危及母婴生命。近来,有研究发现在诊断PROM中,检测阴道液胎儿纤维连接蛋白（fetal fib...胎膜早破（premature rupture of membranes,PROM）是常见的产科并发症,主要并发症是母婴感染,易继发早产、难产、胎儿窘迫等不良妊娠结局,处理不当可危及母婴生命。近来,有研究发现在诊断PROM中,检测阴道液胎儿纤维连接蛋白（fetal fibronectin,FFN）是一种较为有前途的产前预测性诊断方法,与绒毛膜羊膜炎密切相关。展开更多
Objective: To determine if the use of fetal fibronectin (fFN) testing has affected hospital admissions for preterm labor. Methods: ICD-9 and CPT codes from all admissions to Brigham & Women’s Hospital between Jan...Objective: To determine if the use of fetal fibronectin (fFN) testing has affected hospital admissions for preterm labor. Methods: ICD-9 and CPT codes from all admissions to Brigham & Women’s Hospital between January 1, 1995 and December 31, 2010 were evaluated. Data recorded included total deliveries, admissions for preterm labor (PTL) without delivery, length of stay (days) for PTL admissions, preterm deliveries, and number of fFN tests performed. The data was evaluated using a Wilcoxon test of trend and least squares regression. Results: Fetal fibronectin testing was introduced mid-year 2001. As a percentage of total deliveries, the number of admissions for PTL without delivery decreased from 3.97% in 1995 to 2.16% in 2010展开更多
文摘In order to evaluate the predictive value of maternal plasma fibronectin (FN) concentration at 24-34 weeks on fetal intrauterine growth retardation (IUGR), a prospective double-blinded study was performed. The maternal plasma FN concentrations were measured by using a rate nephelometric procedure in the 130 initial normal nulliparous pregnant woman at 24-34 gestational weeks. The outcome of pregnancies and birth weight of their infants were followed up. IUGR was defined as that the birth weight was less than the 10th percentile for gestational age. The receiver operating characteristic curves and predictive values of FN predicting on outcome of pregnancy with IUGR were analyzed. The results showed that: (1) In a cohort of 130 initially normal nulliparous pregnant women, IUGR occurred in 14 cases during the follow-up; (2) The plasma FN levels in the women with IUGR (467.58±104.43 mg/L) were significantly higher than in the normal control group (299.44±105.55 mg/L, P<0.01). However, there was no significant difference in the mean maternal age, gravidity, sampling gestational ages, delivering gestational ages between the two groups (P>0.05); (3) The areas under ROC curve for predicting the outcome of pregnancy in IUGR was 0.893; (4) At the cut point of 475 mg/L FN level, the sensitivity, specificity, positive predictive value, negative predictive value and Kappa index for predicting the outcomes of pregnancy in IUGR were 57.14 %, 95.69 %, 61.54 %, 94.87 %, 0.5455 respectively. It was concluded that the maternal plasma FN might be used as an earlier predictor for screening of IUGR.
文摘Objective: To determine the value of fetal fibronectin (FFN), cervical length (CL) measurement and their combination as binary predictors for preterm birth (PB) in women with preterm labour (PTL) between 24 + 0 and 34 + 0 weeks. Methods: One hundred fifty-nine patients with signs of PTL (singleton pregnancies (SP) = 125, twin pregnancies (TP) = 34) were evaluated in a retrospective study. Inclusion criteria were contractions > 4/20 min, intact membranes, no bleeding. The cut-off was ≥50 ng/ml for FFN and ≤20 mm for CL measured by transvaginal ultrasound. The primary outcome variable was delivery within 7 days from admission. Results: We evaluated 125 SPs and 34 TPs. In SPs, both methods had a sensitivity of 80%;the specificity was 82% for FFN, and 50% for CL. For the combination of both tests sensitivity was 80% and specificity 88%. In TPs, the sensitivity of both tests was lower (FFN 33%, CL 67%) but the combination of both tests represented the highest result for specificity (77% compared to 68% for FFN alone and 32% for CL alone). Conclusion: The combination of FFN and CL in PTL results in a significant higher specificity in SPs. In TPs the performance of the tests is less accurate.
文摘胎膜早破（premature rupture of membranes,PROM）是常见的产科并发症,主要并发症是母婴感染,易继发早产、难产、胎儿窘迫等不良妊娠结局,处理不当可危及母婴生命。近来,有研究发现在诊断PROM中,检测阴道液胎儿纤维连接蛋白（fetal fibronectin,FFN）是一种较为有前途的产前预测性诊断方法,与绒毛膜羊膜炎密切相关。
文摘Objective: To determine if the use of fetal fibronectin (fFN) testing has affected hospital admissions for preterm labor. Methods: ICD-9 and CPT codes from all admissions to Brigham & Women’s Hospital between January 1, 1995 and December 31, 2010 were evaluated. Data recorded included total deliveries, admissions for preterm labor (PTL) without delivery, length of stay (days) for PTL admissions, preterm deliveries, and number of fFN tests performed. The data was evaluated using a Wilcoxon test of trend and least squares regression. Results: Fetal fibronectin testing was introduced mid-year 2001. As a percentage of total deliveries, the number of admissions for PTL without delivery decreased from 3.97% in 1995 to 2.16% in 2010
