Cardiotocography is one of the most widely used technique for recording changes in fetal heart rate (FHR) and uterine contractions. Assessing cardiotocography is crucial in that it leads to iden- tifying fetuses which...Cardiotocography is one of the most widely used technique for recording changes in fetal heart rate (FHR) and uterine contractions. Assessing cardiotocography is crucial in that it leads to iden- tifying fetuses which suffer from lack of oxygen, i.e. hypoxia. This situation is defined as fetal dis- tress and requires fetal intervention in order to prevent fetus death or other neurological disease caused by hypoxia. In this study a computer-based approach for analyzing cardiotocogram in- cluding diagnostic features for discriminating a pathologic fetus. In order to achieve this aim adaptive boosting ensemble of decision trees and various other machine learning algorithms are employed.展开更多
Aim&objective The diagnosis of foetal distress in a clinical setting is based on foetal cardiotocography findings during labour.This study aims to analyse the total deceleration area(TDA)on intrapartum cardiotocog...Aim&objective The diagnosis of foetal distress in a clinical setting is based on foetal cardiotocography findings during labour.This study aims to analyse the total deceleration area(TDA)on intrapartum cardiotocogram which will predict neonatal acidemia at bith.Materials&methods The study participants included women in labour having intrapartum foetal distress(National Institute of Child Halth and Human Development criteria category II and persistent category II on cardiotocogram),who had the 30-min traces(prior to delivery/decision to delivery)and foetal umbilical cord blood gas analysis at delivery.The TDA was calculated and analysed against the cord blood pH obtained at delivery.The deceleration area is calculated as the width of the widest aspect of deceleration(below baseline)measured in minutes which is multiplied by the maximum depth below the baseline and divided by two.TDA is the summation of all the deceleration areas in the last 30 min before delivery.Results A total of 168 participants were analysed.There were 42 cases and 146 controls in the study.The mean TDA in the case and control group was 254.62 missed beats and 165 missed beats,respectively.It was observed that an intrapartum TDA of 2195 missed beats was associated with neonatal acidemia at birth and with an area under curve of 0.6576(95%CI 0.5305 to 0.7847)with a positive predictive value of 83.78%.Conclusion In this study,an intrapartum TDA of≥195 missed beats was significantly associated with neonatal acidemia at birth.The calculation of TDA has simplified intrapartum foetal monitoring.展开更多
目的:探讨产程中胎儿电子监护病理图形与新生儿窒息的关系,评估其应用价值。方法:选择足月妊娠临产、单胎、头位、能观察到全部产程、产时胎儿监护图形资料完整、最终经阴道自然分娩的109例产妇的产时胎儿电子监护资料为研究对象,其中...目的:探讨产程中胎儿电子监护病理图形与新生儿窒息的关系,评估其应用价值。方法:选择足月妊娠临产、单胎、头位、能观察到全部产程、产时胎儿监护图形资料完整、最终经阴道自然分娩的109例产妇的产时胎儿电子监护资料为研究对象,其中新生儿出生1 min Apgar评分≤7分的54例为新生儿窒息组(研究组),出生1 min Apgar评分≥8分的55例为正常新生儿组(对照组),回顾性分析两组产时胎儿监护图形全程资料,比较两组各种病理图形的发生情况。结果:新生儿窒息组出现病理图形52例,占96.30%,正常新生儿组出现病理图形34例,占61.82%;两组最多见的病理图形是早发减速、晚期减速和心动过缓;两组各种图形的发生率有显著差异(χ2=46.082,P=0.000)。其中早发减速及心动过缓新生儿窒息组显著低于正常新生儿组,晚期减速和混合图形新生儿窒息组显著高于正常新生儿组。结论:产时胎儿电子监护病理图形与新生儿窒息密切相关,应该加强对产科人员培训,提高其对图形的识别能力、统一评价标准及处理方法,科学应用胎儿电子监护。展开更多
文摘Cardiotocography is one of the most widely used technique for recording changes in fetal heart rate (FHR) and uterine contractions. Assessing cardiotocography is crucial in that it leads to iden- tifying fetuses which suffer from lack of oxygen, i.e. hypoxia. This situation is defined as fetal dis- tress and requires fetal intervention in order to prevent fetus death or other neurological disease caused by hypoxia. In this study a computer-based approach for analyzing cardiotocogram in- cluding diagnostic features for discriminating a pathologic fetus. In order to achieve this aim adaptive boosting ensemble of decision trees and various other machine learning algorithms are employed.
文摘Aim&objective The diagnosis of foetal distress in a clinical setting is based on foetal cardiotocography findings during labour.This study aims to analyse the total deceleration area(TDA)on intrapartum cardiotocogram which will predict neonatal acidemia at bith.Materials&methods The study participants included women in labour having intrapartum foetal distress(National Institute of Child Halth and Human Development criteria category II and persistent category II on cardiotocogram),who had the 30-min traces(prior to delivery/decision to delivery)and foetal umbilical cord blood gas analysis at delivery.The TDA was calculated and analysed against the cord blood pH obtained at delivery.The deceleration area is calculated as the width of the widest aspect of deceleration(below baseline)measured in minutes which is multiplied by the maximum depth below the baseline and divided by two.TDA is the summation of all the deceleration areas in the last 30 min before delivery.Results A total of 168 participants were analysed.There were 42 cases and 146 controls in the study.The mean TDA in the case and control group was 254.62 missed beats and 165 missed beats,respectively.It was observed that an intrapartum TDA of 2195 missed beats was associated with neonatal acidemia at birth and with an area under curve of 0.6576(95%CI 0.5305 to 0.7847)with a positive predictive value of 83.78%.Conclusion In this study,an intrapartum TDA of≥195 missed beats was significantly associated with neonatal acidemia at birth.The calculation of TDA has simplified intrapartum foetal monitoring.
文摘目的:探讨产程中胎儿电子监护病理图形与新生儿窒息的关系,评估其应用价值。方法:选择足月妊娠临产、单胎、头位、能观察到全部产程、产时胎儿监护图形资料完整、最终经阴道自然分娩的109例产妇的产时胎儿电子监护资料为研究对象,其中新生儿出生1 min Apgar评分≤7分的54例为新生儿窒息组(研究组),出生1 min Apgar评分≥8分的55例为正常新生儿组(对照组),回顾性分析两组产时胎儿监护图形全程资料,比较两组各种病理图形的发生情况。结果:新生儿窒息组出现病理图形52例,占96.30%,正常新生儿组出现病理图形34例,占61.82%;两组最多见的病理图形是早发减速、晚期减速和心动过缓;两组各种图形的发生率有显著差异(χ2=46.082,P=0.000)。其中早发减速及心动过缓新生儿窒息组显著低于正常新生儿组,晚期减速和混合图形新生儿窒息组显著高于正常新生儿组。结论:产时胎儿电子监护病理图形与新生儿窒息密切相关,应该加强对产科人员培训,提高其对图形的识别能力、统一评价标准及处理方法,科学应用胎儿电子监护。
