Key result
A new method for calibrating and measuring precordial movement was used to establish normal ranges for the a wave, systolic outward movement, and rapid-filling wave in 45 normal subjects.
Observational (n=45)
The study establishes a method and normal reference ranges for quantifying precordial movement.
Provides initial normal ranges for precordial movement quantification in healthy subjects; leaves open larger validation and clinical utility.
A method has been devised for calibrating and measuring aspects of displacement records of cardiac movement. Forty-five normal subjects have been studied using this method, and a normal range has been calculated for the heights of the a wave, systolic outward movement, rapid-filling wave, and the ratio of rapid-filling wave to duration. The consistency of the results obtained and factors producing variations are discussed.
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Sutton et al. (1967) conducted an observational in Normal subjects (n=45). Method for calibrating and measuring displacement records of cardiac movement was evaluated on Normal range for heights of the a wave, systolic outward movement, rapid-filling wave, and the ratio of rapid-filling wave to duration. A new method for calibrating and measuring precordial movement was used to establish normal ranges for the a wave, systolic outward movement, and rapid-filling wave in 45 normal subjects.
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