Real-time correction of heart interbeat intervals.
Heart rate variability (HRV) is traditionally analyzed while a subject is in a controlled environment, such as at rest in a clinic, where it can be used as a medical indicator. This paper concerns analyzing HRV outside of controlled environments, such as on an actively moving person. We describe automated methods for inter-heartbeat interval (IBI) error detection and correction. We collected 124,998 IBIs from 18 subjects, undergoing a variety of active motions, for use in evaluating our methods. Two human graders manually labeled each IBI, evaluating 10% of the IBIs as having an error, which is a far greater error percentage than has been examined in any previous study. Our automated method had a 96% agreement rate with the two human graders when they themselves agreed, with a 49% rate of matching specific error corrections and a 0.01% false alarm rate.
Rand
Jeromie
J
Electrical and Computer Engineering Department, Clemson University, Clemson, SC 29634-0915, USA.
Hoover
Adam
A
Fishel
Stephanie
S
Moss
Jason
J
Pappas
Jennifer
J
Muth
Eric
E
D000293:Adolescent; D000328:Adult; D016477:Artifacts; D001322:Autoanalysis; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation / Q000379:methods*; D005189:False Positive Reactions; D006304:Health Status; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D013334:Students; D013647:Task Performance and Analysis; D013997:Time Factors