Document Detail


Correlation of Lorenz scatterplots with frequency-domain heart rate variability.
MedLine Citation:
PMID:  11848164     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Heart rate (HR) variability is important with respect to disease prognosis and the effects of drugs. Lorenz scatterplots provide a simple way to evaluate HR variability visually. The relation of Lorenz scatterplots to frequency-domain HR variability was examined in 75 Holter recordings and in simulated HR trends. The length of Lorenz scatterplots was double-exponentially correlated with total frequency and very-low frequency powers, with correlation coefficients (r) of 0.88. The width of Lorenz scatterplots was highly correlated with the high frequency power (r=0.98). The sum of the width and length of Lorenz scatterplots was highly correlated with the total frequency power (r=0.92). Identical results were obtained when simulated HR trends were used. In conclusion, Lorenz scatterplots provide a simple way to estimate the frequency-domain HR variability.
Authors:
Toshiyuki Ueda; Takaaki Nakatsu; Shinichi Yamane; Sekiko Kurazono; Takashi Murakami; Keiichi Mashima; Y Tominaga; Naoki Mukouhara; Shozo Kusachi; Takao Tsuji
Related Documents :
674014 - Effects of age, light regimes and food removal on development of daily rhythmicity in c...
4419584 - The effects of load and force on tremor at the normal human elbow joint.
23161214 - Quantification abilities in angelfish (pterophyllum scalare): the influence of continuo...
12629234 - Tremor response to polarity, voltage, pulsewidth and frequency of thalamic stimulation.
8858874 - Impairment of the perception of second order motion but not first order motion in a pat...
7900304 - Depth discrimination of a crowded line is better when it is more luminant than the line...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical and experimental hypertension (New York, N.Y. : 1993)     Volume:  24     ISSN:  1064-1963     ISO Abbreviation:  Clin. Exp. Hypertens.     Publication Date:    2002 Jan-Feb
Date Detail:
Created Date:  2002-02-18     Completed Date:  2002-07-31     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9305929     Medline TA:  Clin Exp Hypertens     Country:  United States    
Other Details:
Languages:  eng     Pagination:  11-21     Citation Subset:  IM    
Affiliation:
Department of Internal Medicine, Okayama University Medical School, Okayama, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Aged, 80 and over
Artifacts
Cardiac Output, Low / physiopathology
Computer Simulation
Electrocardiography, Ambulatory
Female
Heart Rate / physiology*
Humans
Hypertension / physiopathology
Male
Middle Aged
Models, Cardiovascular
Myocardial Ischemia / physiopathology
Nonlinear Dynamics
Reference Values
Statistics as Topic / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Circadian variation of blood pressure and neurohumoral factors during the acute phase of stroke.
Next Document:  Relationship between personality and self-measured blood pressure value at home: the Ohasama study.