Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Analysis of heart rate variability of an anencephalic fetus using a new method to determine a fractal dimension of non-stationary time-serial data

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the Brill platform automatically have access to the MyBook option for the title(s) acquired by the Library. MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Access this article

+ Tax (if applicable)
Add to Favorites

image of Frontiers of Medical and Biological Engineering

Human fetal heart rate (HR) variabilities were analyzed using the QIS-A, which we devised to determine a fractal dimension of non-stationary time series. Fifteen 10-min HR data of an anencephalic fetus at 23 weeks and 3 days of gestation and those of 10 normal fetuses at the same weeks of gestation were obtained by ultrasonic cardiography. The anencephalus preserved the spinal cord, medulla and partial anterior hypothalamus. The fractal scaling exponent α of the anencephalus was compared with that of each normal fetus by Student's t-test. In results, the scaling relationship in each case had a crossover pattern characterized by αs and αl, which were slopes above and below a crossover point, respectively. Differences in mean αs and mean αl between the anencephalus and each normal fetus were significant (P < 0.01): mean αs, 1.0±0.1 (±SD) (1/f fluctuation) and 1.6±0.2 (±SEM); mean αl, 1.6±0.2 (±SD) and 1.4±0.1 (±SEM). There were six significant differences in mean crossover point between the anencephalus and each normal fetus: 13.8±5.7 s (±SD) and 15.3±5.6 s (±SEM). These results reveal the relationship between fractal structure of fetal HR variability and the developing central nervous system (CNS). In particular, the 1/f fluctuation of HR variability in an anencephalic fetus from the 1.25 to 13.8 s time scale might have a strong relation to the defect of the CNS.

10.1163/156855700750265495
/content/journals/10.1163/156855700750265495
dcterms_title,pub_keyword,dcterms_description,pub_author
6
3
Loading
Loading

Full text loading...

/content/journals/10.1163/156855700750265495
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/156855700750265495
Loading

Article metrics loading...

/content/journals/10.1163/156855700750265495
2000-12-01
2016-07-26

Sign-in

Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation