“…From the articles that we reviewed, we found that researchers were motivated to develop and use automated methods to diagnose, feature extraction and classification of cardiotocography focused on improving early detection and rapid diagnosis, accuracy, guidelines, data sets, ONG experts, methods and techniques. This section describes the Haweel & Bangash (2013), Gavrilis, Nikolakopoulos & Georgoulas (2015), Shah et al (2015), Chamidah & Wasito (2015), Cömert, Kocamaz & Güngör (2016), Georgoulas et al (2017), Permanasari & Nurlayli (2017), Nagendra et al (2017), Zhang & Zhao (2017), Sahin & Subasi (2015), Ocak (2013), Ocak & Ertunc (2013), Yılmaz (2016), Chinnasamy, Muthusamy & Gopal (2013), Inbarani, Banu & Azar (2014), Sundar, Chitradevi & Geetharamani (2014) Publicly available Each record provides information about morphological patterns (physiological, suspect, pathological) Gavrilis, Nikolakopoulos & Georgoulas (2015), Shah et al (2015), Chamidah & Wasito (2015), Jyothi, Hiwale & Bhat (2016), Magenes et al (2016), Warmerdam et al (2016), Cömert & Kocamaz (2017b), Zhang & Zhao (2017), Georgieva et al (2013), Xu et al (2014), Yılmaz (2016), Cömert & Kocamaz (2017a), Kim, Yang & Lee (2017),…”