-transparent.png){kind=logo}
Two quantitative indices of heart rate variability are proposed. Instantaneous variability is defined as the average of the absolute value of instantaneous rate differences over a 30 second interval. It is sensitive to short-term variability changes. Bandwidth variability is defined as twice the standard deviation of instantaneous heart rates over a 30 second interval, and it is a measure of long-term variability. The rationale for the choice of these indices is discussed, and they are compared with other published indices of variability. Samples of computer printout of instantaneous and bandwidth variability obtained from fetal heart rate records are given.
Related Publications
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
September 2003,
Medical & biological engineering & computing,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
June 1998,
Cardiologia (Rome, Italy),
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
April 2015,
European journal of applied physiology,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
January 1990,
The American journal of cardiology,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
November 2011,
Physiological measurement,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
November 2011,
Pacing and clinical electrophysiology : PACE,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
January 2000,
American journal of physiology. Regulatory, integrative and comparative physiology,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
January 2013,
Frontiers in physiology,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
November 2023,
Scientific reports,
L W Organ, and
P A Hawrylyshyn, and
J W Goodwin, and
J E Milligan, and
A Bernstein
October 2013,
Journal of clinical monitoring and computing,
