3Street P, Dawes DM, Moulden M, et al, Short - term variation in abnormal antenatal fetal heart rate records [J]. Am J Obstet Gynecol, 1991,165(3) :515 -523.
4Roberts D, Kumar B, TinceLLo DG, et al. Computer antenatal fetal heart rate recordings between 24 and 28 weeks of gestation [J]. B JOG,2001,37:499 - 502,
1Struijk PC,Ursem NT,Mathews J,et at. Power spectrum analysis of heart rate and blood flow velocity variability measured in the umbilical and uterine arteries in early pregnancy:a comparative study. Ultrasound Obstet & Gynecol, 2001,17: 316-321.
2Salamalekis E, Thomopoulos P, Giannaris D, et al. Computerised intrapartum diagnosis of fetal hypoxia based on fetal rate monitoring and fetal pulse oximetry recording utilising wavelet analysis and neural networks. BJOG, 2002,109:1137-1142.
3Van Cappellen AM, Heerschap A, Nijhuis JG, et al. Hypoxia,the subsequent systemic metabolic acidosis, and their relationship with cerebral metabolite concentrations: An in vivo study in fetal lambs with proton magnetic resonance spectroscopy. Am J of Obst
4Low JA,Pickersgil H,Killen H,et al. The prediction and prevention of intrapartum fetal asphyxia in pregnancies. Am J Obstet Gynecol, 2001,184 : 724-730.
5National institute of child health and human development research planning workshop. Electronic fetal heart rate monitoring:research guidelines for interpretation. Am J of Obstet Gynecol, 1997,177 : 1385-1390.
6Rantonen T,Ekholm E,Siira S, et al. Periodic spectral components of fetal heart rate variability reflect the changes in cord arterial base deficit values: a preliminary report. Early Hum Dev,2001,60:233-238.
7Ohta T,Okamura Y,Kimura Y,et al. Alteration in the low-frequency domain in power spectral analysis of fetal heart beat fluctuations. Fetal Diagn Ther, 1999,14 : 92-97.
8Ursem NT,Kempski MH,de Ridder MA,et al. An estimate of fetal autonomic state by spectral analysis of human umbilical artery flow velocity waveforms. Cardiovasc Res, 1998, 37: 601-605.
9Williams KP,Galerneau F. Intrapartum fetal heart patterns in the prediction of neonatal acidemia. Am J Obstet Gynecol,2003,188:820-823.
10Freeman RK. Problems with intrapartum fetal heart rate monitoring interpretation and patient management. Obstet Gynecol,2002,100:813-826.
2Dawes GS, Moulden M, Redman CW. System 8000: computerized antenatal FHR analysis [J]. J Perinat Med, 1991,19(1):47-51.
3Dawes GS, Moulden M, Redman WG. Short-term fetal heart rate variation, decelerations, and umbilical flow velocity wave forms before labor[J]. Obstet Gynecol, 1992,80(4):673-675.
4G. Magenes, M.G. Signorini, M. Ferrario, F. Lunghi. 2CTG2: A new system for the antepartum analysis of fetal heart rate [J]. IFMBE Proceedings, 2007,16:781-784.
5B. Niranjana Krupa, M.A. Mohd. Alil, E. Zahedi. Computerized Fetal Heart Rate Baseline Estimation Based on Number and Continuity of Occurrences [J]. IFMBE Proceedings, 2008,21:162-165.
6Peter Varady, Ludwig Wildt, Zoltan Benyo. An advanced method in fetal phonocardiography [J]. Computer Methods and Programs in Biomedicine. 2003,71:283-296.
