Skip to main content

Recent progress of technology in obstetrics gynecology, particularly in perinatal medicine in Japan

  • Chapter
Medical Progress through Technology

Abstract

There has been remarkable improvement in the perinatal mortality in Japan as noted in the reports of national statistics of the Ministry of Health and Welfare. It will be the least perinatal mortality among the countries in the world where the births are more than one million over the last 2 to 3 years. Namely, the mortality of Japan was less than 10 in 1,000 births in a year. This improvement was obtained by the change of socioeconomical condition until 1980, but the progress after that period is interpreted as the result of the efforts in the management of the mother and infant in the perinatal stage (Morio,1985). This effort includes that of the staffs in the clinics and also the advancements of the tools in the new technologies which have been seriously studied since the 1960s. The most important modality would be the progress of fetal monitoring in labor and pregnancy in these 20 years. The external techniques include the use of fetal heart signals detected at maternal abdomen, which is the most commonly the ultrasonic Doppler fetal heart signal, and that of external tocodynamometry. This technique resulted in the monitoring of whole labor and also the diagnosis of pregnant women prior to the onset of labor with the technique of the non-stress test (NST) which is the antepartum cardiotocogram (CTG) recorded for 40 to 60 min. mainly in high-risk patients. The management with rapid delivery after the diagnosis of fetal hypoxia with the technique reduced the unexpected fetal deaths during pregnancy and in labor, and also decreased the perinatal morbidity including neonatal asphyxia, respiratory distress and the meconium aspiration syndrome. The reduction of cerebral palsy after growing-up can be expected if the fetal monitoring and the management is adequately carried out in perinatal stage. Fetal heart rate (FHR) analysis is one of the main targets of the research in order to obtain further improvement, since the main component of the fetal monitoring has been the diagnosis of FHR records.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 259.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 329.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Fujibayashi H, Ohkawa T, Yagi K, Hogaki M, Okada K, Takeuchi Y: Automatous differentiation of valve and wall signal from early embryonal heart. JJME 24 (Supp): 102, 1986.

    Google Scholar 

  2. Fukamanai K, Hashimoto T, Furuya H, Ebara Y: Studies on characteristic of wave form of FHR long term variability by fast Fourier transform analysis. JJME 23 (Supp): 295, 1985.

    Google Scholar 

  3. Fukuju M, Akatsuka T, Nagamine T, Kubo T: An intelligent fetal monitoring system. JJME 23 (Supp): 300, 1985.

    Google Scholar 

  4. Hashimoto T, Fukamanai K, Furuya H, Ebara Y: Computer analysis on neonatal cries. JJME 23 (Supp): 315, 1985.

    Google Scholar 

  5. Hata K, Hata T, Aoki S, Murao F, Kitao M: Ultrasonic identification of in utero fetal adrenal gland. Jap J Med Ultras 12 (Supp): 113–114, 1985.

    Google Scholar 

  6. Hata T, Hata K, Kitao M: Fetal intracardiac blood-flow patterns assessed by pulsed Doppler and B-mode ultrasound. J Cardiovasc Ultrasonog 3: 101–106, 1984.

    Google Scholar 

  7. Hata T, Hata K, Kitao M: Fetal cardiac function and outcome determined echocardiographically. J Cardiovasc Ultrasonog 5: 19–23, 1986.

    Google Scholar 

  8. Ikeda M, Kawarabayashi T, Sugimori H, Nakano H: The pattern of spontaneous contraction and the effect of Mg-+ and Terbutaline on pregnant human myometrium. Acta Obstet Gynaec Jpn 36: 377–383, 1984.

    Google Scholar 

  9. Inaba J, Shigematsu S, Iwasaki M, Kubo T, Iwasaki H, Akatsuka T: Analysis of autocorrelation function for neonatal heart beats using digital data recorder. JJME 23 (Supp): 297, 1985.

    Google Scholar 

  10. Inaba J, Okane M, Shigematsu S, Kubo T, Iwasaki H: An intelligent fetal monitoring system. JJME 24 (Supp): 105, 1986.

    Google Scholar 

  11. Inoue M, Hara H, Nakahara H, Hori E, Shin T, Koyanagi T, Nakano H: Relation between eye movement and micturition of fetus assessed by real-time ultrasound. Jap J Med Ultras 12 (Supp): 123–124, 1985.

    Google Scholar 

  12. Irie T, Sawazumi K, Tatsumura M, Maeda K: The relationship among the umbilical cord arterial blood pH, BE, HCO3-, the automated analysis of fetal heart rate and trendgram. JJME 23 (Supp): 302, 1985.

    Google Scholar 

  13. Irie M, Imai S: Construction of obstetric database based on interactive input at origination point. JJME 24 (Supp): 106, 1986.

    Google Scholar 

  14. Ishigura M, Fukuma H, Umayabayashi M, Yuki J, Inokuchi K, Yang R, Higashidate N, Morohashi T, Sakamoto S: An on-line digitalised image transmission system used ultrasonic tomograph and computer. JJME 23 (Supp): 309, 1985.

    Google Scholar 

  15. Ishihara K: Measurement of blood flow in maternal pelvic artery and umbilical cord artery with the ultrasonic pulsed Doppler flow method. Acta Obstet Gynaec Jpn 37: 2335 2345, 1985.

    Google Scholar 

  16. Kanzaki T, Murakami M, Sasaki K, Sakakibara S, Utsu S, Chiba Y, Hasegawa T: The management of perinatal informations by microcomputer system. JJME 23 (Supp): 306, 1985.

    Google Scholar 

  17. Kanzaki T, Murakami M, Sasaki S, Utsu M, Chiba Y, Hasegawa T: The monitoring of hemodynamic changes during fetal therapy for arrhythmias by pulsed Doppler ultrasound. Jpn J Med Ultras (Prot 46 meeting): 265–266, 1985.

    Google Scholar 

  18. Kawarabayashi T, Ikeda M, Sugimori H, Nakano H: Spontaneous electrical activity and effects of noradrenaline on pregnant human myometrium recorded by the single sucrose-gap method. Acta Physiol Hungarica 67: 71–82, 1986.

    Google Scholar 

  19. Kitada F: Studies on periodic changes of fetal and neonatal heart rate. Acta Obstet Gynaec Jpn 36: 2147–2154, 1984.

    Google Scholar 

  20. Kobayashi H, Shimazu H, Ito H, Yamakoshi K: Indirect measurement of arterial pressure in newborn babies and infants. JJME 24 (Supp): 477, 1986.

    Google Scholar 

  21. Kobayashi K, Oda T, Murooka H: Characteristic pattern in time series of crying vocal in early infant. JJME 24 (Supp): 107, 1986.

    Google Scholar 

  22. Koyanagi T: Development of mechanismus regulating heart rates in human fetuses analyzed by factor analysis. Asia-Oceania J Obstet Gynaec 12: 155–165, 1986.

    Article  Google Scholar 

  23. Kubo T, Shigematsu S, Inaba J, Koresawa N, Iwasaki H, Akatsuka T: Fetal ECG derived directly through maternal abdominal wall. JJME 23 (Supp): 316, 1985.

    Google Scholar 

  24. Maeda K, Arima T, Tatsumura M, Nagazawa T: Computer-aided fetal heart rate analysis and automatic fetal-distress diagnosis during labor and pregnancy utilized external technique in fetal monitoring. MEDINFO 80, Part 1, pp 1214–1218, 1980.

    Google Scholar 

  25. Maeda K, Tatsumura M, Yoneda T, Nakamura Y: Fetal mechanocardiography recorded with the processing of ultrasonic Doppler fetal heart valve signals. Jpn J Med Ultras 8: 159–165, 1981.

    Google Scholar 

  26. Maeda K: Computerized automatic diagnosis of fetal distress with use of external monitoring technique. Computer-diagnostik in Geburtsmedizin 2. Symp. pp 28–49, 1981.

    Google Scholar 

  27. Maeda K, Ito K: Studies on the sinusoidal pattern of fetal heart rate diagnosed by new tentative criteria. Acta Obstet Gynaec Jpn 35: 1923–1930, 1983.

    Google Scholar 

  28. Maeda K, Utsu M, Chiba Y: Advances in CW and pulsed ultrasonic Doppler techniques in the studies of fetal heart, circulation, fetal action and breathing. In: Kurjak A, Kossoff G (eds) Recent advances in ultrasound diagnosis 4. Excerpta Medica, Amsterdam, 1984, pp 78–97.

    Google Scholar 

  29. Maeda K, Ito K: Studies on fluctuating CTG with the sinusoidal pattern index. Obstetric and Gynecologic Treatment 49: 497–501, 1984.

    Google Scholar 

  30. Maeda K: Studies on new ultrasonic Doppler fetal actograph and continuous recording of fetal movement. Acta Obstet Gynaec Jpn 36: 280–288, 1984.

    Google Scholar 

  31. Maeda K, Iwamoto K, Miyamoto N, Tsuzaki T, Takeuchi K: Pocket computer assisted estimations of fetal age and fetal weight. In: Kurjak A, Kossoff G (eds) Recent advances in ultrasound diagnosis 4. Excerpta Medica, Amsterdam, 1984, pp 160–173.

    Google Scholar 

  32. Maeda K: Report of the study group supported by the Ministry of Education `the study on the data processing of the fetus in perinatal stage’, 1984.

    Google Scholar 

  33. Maeda K, Tatsumura M, Takeuchi K, Oota M, Minagawa Y, Irie T: Modern technology and the fetus. In: Kurjak A (ed) The fetus as a patient. Excerpta Medica, Amsterdam, 1985, pp 284–299.

    Google Scholar 

  34. Maeda K, Murao F, Yoshiga T, Yamauchi C, Tsuzaki T: Experimental studies on the suppression of cultured cell growth curves after the irradiation of CW and pulsed ultrasound. IEEE Transactions on Ultrasonics, ferroelectrics and frequency control. UFFC-33: 186–193, 1986.

    Article  Google Scholar 

  35. Maeda K, Ide M: The limitation of ultrasound intensity of diagnostic devices in the Japanese Industrial Standards. IEEE Transactions. UFFC-33: 241–244, 1986.

    Google Scholar 

  36. Maeda K, Ishihara K, Takeuchi Y: Studies on pulsed ultrasonic flowmetry, ultrasonic color Doppler technique and the evaluation of continuous wave ultrasonic Doppler flow metry. In: Kurjak A, Kossoff G (eds) Recent advances in ultrasound diagnosis 5. Excerpta Medica, Amsterdam, 1986, pp 189–200.

    Google Scholar 

  37. Maeda K, Sakao A, Mio Y, Kikukawa A, Akaiwa A, Kihaile PE: The Quantification of ultrasonic B-mode images with the trials of tissue characterization in obstetrics and gynecology. In: Kurjak A, Kossoff G (eds) Recent advances in ultrasound diagnosis 5. Exccrpta Medica, Amsterdam, 1986, pp 215–222.

    Google Scholar 

  38. Minoura S, Fujii K, Kaihara S, Koyama T: Perinatal care consultation system by using MECS-AI. JJME 23 (Supp): 308, 1985.

    Google Scholar 

  39. Minoura S, Wagatsuma T, Fujii K, Kaihara S, Koyama T: Consultation system for the ultrasound diagnosis of ovarian tumor by using MECS-AI. JJME 24 (Supp): 112, 1986.

    Google Scholar 

  40. Morio S: Quantitative relationship between infant mortality and social factors. Yonago Acta medica 28: 8–37, 1985.

    Google Scholar 

  41. Murakami M, Matsui Y, Okudaira Y, Kanzaki T, Utsu M, Chiba Y: A study of the pulsation in the umbilical venous blood flow. JJME 24 (Supp): 474, 1986.

    Google Scholar 

  42. Murao F, Takamori H, Hata K, Hirayama K, Hata T, Yamamoto K, Kitao M: Measurement of fetal liver sizes by ultrasound. Jap J Med Ultras 13 (Supp): 133–134, 1986.

    Google Scholar 

  43. Nakagawa M, Yagi K, Ohkawa T, Hogaki M, Arai K, Takeuchi Y: Remote sensing of neonatal heart beat and respiration with the use of airborne ultrasound. Acta Obstet Gynaec 38 (Supp): 195, 1986.

    Google Scholar 

  44. Nakahara H, Koyanagi T, Nakano H: Application of LAN on the basis of micro-computer system in obstetric practice. JJME 24 (Supp): 70, 1986.

    Google Scholar 

  45. Nakajima Y, Inokuchi K, Amemiya T, Inou Y, Morohashi T, Sakamoto S, Kawakami J, Takahashi R, Moroe T, Ohta I, Kosugi M: Fetal information processing system. JJME 23 (Supp): 307, 1985.

    Google Scholar 

  46. Nakajima Y: New technique of uterine contraction evaluation with multiple transducer technique. 30th meeting of the study group on medical engineering in perinatal medicine. 1986.

    Google Scholar 

  47. Nakamura Y: Studies on the systolic time intervals obtained by ultrasonic Doppler mechanocardiograph and the triggering with abdominal lead FECG during pregnancy. Jpn J Med Ultras 9: 29–35, 1982.

    Google Scholar 

  48. Ninomiya S, Yano F, Nishimura J: Fetal R wave detection and its application. JJME 23 (Supp): 317, 1985, 24 (Supp): 104, 1986.

    Google Scholar 

  49. Nishi M, Masaoka H, Kohchi T, Ukita N, Kirai T, Yuhara A, Fujita T, Jukumoto S, Akamatsu N, Sekiba K, Tsubota N: Ultrasound measurement and computer aided diagnosis in obstetrics. JJME 23 (Supp): 311, 1985.

    Google Scholar 

  50. Noguchi Y, Hataoka H, Sugimoto S: An estimation method of generating function of heart-rate variability. T ME 24 (Supp): 478, 1986.

    Google Scholar 

  51. Ogawa S, Fukuma H, Umayabayashi M, Amainiya T, Nakazima U, Imo U, Morohashi T, Sakamoto S: A fetal growth monitoring system by ultrasonic tomograph and personal computer. JJME 23 (Supp) 310, 1985.

    Google Scholar 

  52. Ohta M: Evaluation of fetal movements with ultrasonic Doppler fetal actograph. Acta Obstet Gynaec Jpn 37: 73–82, 1985.

    Google Scholar 

  53. Okane M, Shigemitu S, Inaba J, Koresawa N, Kubo T, Iwasaki K: Continuous fetal scalp transcutaneous PO2 monitoring during labor. JJME 23 (Supp): 303, 1985.

    Google Scholar 

  54. Okane M, Sjigemitsu S, Inaba J, Koresawa M, Kubo T, Iwasaki K, Kawagoe K: Continuous fetal scalp trans-cutaneous pCO2 monitoring during labor. JJME 24 (Supp): 476, 1986.

    Google Scholar 

  55. Sakao A: In vitro study on relation between the gynecological tumor and the level of the ultrasound reflected waves. Jpn J Med Ultras 11: 155–161, 1984.

    Google Scholar 

  56. Shimizu K, Satoh N, Kawano S: Clinical significa nce of the oxygen saturation in the fetal presenting part during labor. JJME 23 (Supp): 303, 1985.

    Google Scholar 

  57. Sugimoto S, Maeda K, Hataoka H: Spectral analysis of fetal heart rate by linear prediction method. JJME 23 (Supp): 298, 1985.

    Google Scholar 

  58. Sumimoto K: Moiré curve evaluation on maternal abdomen in the labor contraction of the uterus. 30th meeting of the study group on medical engineering in perinatal medicine, 1986.

    Google Scholar 

  59. Taguchi T: Studies on the periodicity of fetal and neonatal heart rate variability by fast Fourier transform analysis. Acta Obstet Gynaec Jpn 35: 53–60, 1983.

    Google Scholar 

  60. Takagi K, Matsuura M, Yamamoto S, Miyake Y, Sakata T, Takagi T: The topographic evaluation of electrical pattern caused by human uterine contraction and its clinical application. Acta Obstet Gynaec Jpn 38 (Supp): 194, 1986.

    Google Scholar 

  61. The Committee on Medical Engineering; Guidelines for using diagnostic ultrasound equipment in pregnant women and fetuses. Acta Obstet Gynaec 38: 1011–1012, 1986.

    Google Scholar 

  62. Tsujii T, Yagi K, Ohkawa T, Hogaki M, Arai K, Ohkawa K, Yatsugi K, Takeuchi Y: Detection of embryonal heart rate from linear scan ultrasonograph. Jpn J Med Ultras (Proc 46 Meeting) 265–266, 1985.

    Google Scholar 

  63. Tsuzaki T, Takeuchi K, Ishihara K, Maeda K: The study of blood flowmetry by pulsed Doppler technique in the placental pores and the umbilical arteries. Jpn J Med Ultras 12: 131–132, 1985.

    Google Scholar 

  64. Tsuzaki T, Minagawa Y, Nagata N, Takeuchi Y, Maeda K: The diagnosis of fetal cardiac failure by pulsed-Doppler flowmetry in the fetal vessels. Jpn J Med Ultras 13 (Supp): 165–166, 1986.

    Google Scholar 

  65. Tsuzaki T, Morishita K, Nakajima K: Studies on the changes of perinatal statistics after the introduction of full intrapartum fetal monitoring in 11 years. Acta Obstet Gynaec Jpn 38 (Supp): 177, 1986.

    Google Scholar 

  66. Tsuzaki T, Minagawa Y, Nagata N, Takeuchi Y, Maeda K: The diagnosis of fetal cardiac failure by pulsed Doppler flowmetry in the fetal vessels. Jpn J Med Ultras 13 (Supp) 165–166, 1986.

    Google Scholar 

  67. Watanabe T, Ishii T, Kobayashi N: Development of real time automatic analyzer for movement-voice synchronization in communication. JJME 24 (Supp): 108, 1986.

    Google Scholar 

  68. Yagi I, Isobe Y, Fujibayashi H, Ohkawa T, Hogaki M, Arai K, Takeuchi Y: Detection error of conventional auto-correlation fetal heart rate meter in scalp lead FECG. Acta Obstet Gynaec Jpn 12 (Supp): 113, 1985a.

    Google Scholar 

  69. Yagi K, Ohkawa T, Hogaki M, Takeuchi Y: Detection error of instantaneous fetal heart rate meter of 1 MHz Doppler signal. JJME 23 (Supp): 296, 1985b.

    Google Scholar 

  70. Yoneda T: Fetal mechanocardiogram studied by systolic time intervals in ultrasonic Doppler fetal heart valve signals using new multistylus recorder system. Acta Obstet Gynaec Jpn 33: 1209–1218, 1981.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1987 Martinus Nijhoff Publishers, Boston

About this chapter

Cite this chapter

Maeda, K. (1987). Recent progress of technology in obstetrics gynecology, particularly in perinatal medicine in Japan. In: Atsumi, K., Kajiya, F., Tsuji, T., Tsujioka, K. (eds) Medical Progress through Technology. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3361-3_17

Download citation

  • DOI: https://doi.org/10.1007/978-94-009-3361-3_17

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-89838-973-9

  • Online ISBN: 978-94-009-3361-3

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics