- 作者：Mayra Moraes Barros Silvaa ; Isadora Camargo Knuppela ; Carolina Diniz Galassia ; Maria Jussara Bolettia ; Mariana Salgado E. Carvalhoa ; Marina Pereira Introvinia ; Sara Gradiz Afonso Palmieri Cunhaa ; Manoel Francisco Schettino Amancio Coelhob ; Clareana Ghiraldini Geraldesb ; Sira da Silvab ; Vivian Macedo Gomes Març ; ala ; Marcia Carneiro Sacob ; Rogerio Gomes dos Reis Guidonia ; Mauricio Saitob ; Francisco Lazaro Pereira de Sousab ; Corintio Mariani Netoc
- 刊名：Pregnancy Hypertension: An International Journal of Women's Cardiovascular Health
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：6
- 期：3
- 页码：222-223
- 全文大小：289 K
Objective
Compare two resources of study of fetal vitality: cardiotocography and fetal monitor AN24 (Monica Health Care) in hypertensive pregnancies.
Methods
This is a study control case with a sample of 22 patients in which we compare the tracing using the conventional cardiotocography, and transabdominal fetal electrocardiography by choice of the fetal monitor AN24. The study was conducted with pregnant women equal or above 34 weeks, alive fetus and single, with hypertensive disorders according to the criteria NHBPEP – 2000 at Hospital Guilherme Álvaro-Santos/SP-Brazil from june to october of 2015. The study had 22 patients with diagnosis of hypertensive syndrome. The applicability of both methods was performed according to the standardized recommendations. The variables examined in the study were: gestational age, analyzed in weeks; number of pregnancies; parity; body mass index (BMI), which was divided into 3 criteria (BMI less than 30; BMI ⩾ 30 and less than 35; BMI ⩾ 35); preparation time, which means the time (in minutes) since the starting of local asepsis up to the beginning of the record of cartography. Also was analyzed the success in capturing, which was defined as the successful capture of the signal to execute the cardiotocography; signal loss, defined as any interruption of cardiotocographic tracing. Finally, it was analyzed the concordance in categorical classification in both methods. Following the criterias divided in class I, II and III (ACOG, 2009).1
Results
Afterwards analysed 22 patients, were obtained: average of the gestational age 36,71 weeks, average of pregnancies 2,14, average of births 1,09 and average of BMI 34,17. This study has shown 100% of agreement in categorical classification in both procedures. The success capitation between the methods was similar (p = 0,999). In AN24 monitor, six tracings has showed signal loss, while in the CTB only three has shown this loss (p = 0,505). The monitor AN24 have showed a bigger preparation time than the other method, analysed in 1,94 min. The CTB method showed better results when comparing the variable preparation time in patients with BMI > 35 (p = 0,094).
Conclusion
No differences were identified concerning the quality of analysis of fetal viability between the resources and were also in agreement on the categorical analysis of each tracing. Both methods showed agreement in the variables: success of capturing in the whole sample and in BMI between 30 and 35. The AN24 showed better results than the CTB, when analyzing the variables: success of capturing in BMI higher than 35 and signal loss, in the whole sample and in BMI between 30 and 35. On the other hand, CTB had more success in capturing only in BMI less than 30, and showed faster preparation time in the whole sample and in all BMI groups. Further studies may broaden the comparison between these current methods.
1. American College of Obstetricians and Gynecologists, ACOG Practice Bulletin No. 106: Intrapartum fetal heart rate monitoring: nomenclature, interpretation, and general management principles, Obstet Gynecol. 114(1) (2009) 192–202.