Variable threshold R wave detector: Use in automated ECG processing

Document Type

Article

Publication Date

1-1-1985

Abstract

Reliable R wave detection is difficult under many commonly found conditions of varying baseline and changing morphology such as varying R wave amplitude and reduced R T ratio. An instrument has been developed which overcomes many of these problems. The device employs a variable detection threshold which is based on the amplitude of the last occurring R wave. For large R wave amplitudes, the threshold is raised, thus providing good noise immunity. For low R wave amplitudes, the threshold is lowered, thus providing continued detection. An R wave filter de-emphasizes noise as well as P and T waves, and an adjustable refractory period following R wave detection prevents false detection during this period. The variable threshold R wave detector has been used to process ECG in a heart rate study in nearly 100 diabetic patients as well as in healthy controls. The detector provides much improved automatic R wave detection over fixed level detectors and can be constructed with parts costing under 100 dollars. © 1985.

Identifier

0022243981 (Scopus)

Publication Title

Physiology and Behavior

External Full Text Location

https://doi.org/10.1016/0031-9384(85)90417-2

ISSN

00319384

PubMed ID

4080846

First Page

815

Last Page

818

Issue

5

Volume

35

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