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RMSSD [1 record]

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Record 1 2023-07-13

English

Subject field(s)
  • The Heart
CONT

The RMSSD is the root mean square of successive differences between normal heartbeats. This value is obtained by first calculating each successive time difference between heartbeats in milliseconds. Each of the values is then squared and the result is averaged before the square root of the total is obtained. The RMSSD reflects the beat-to-beat variance in HR [heart rate] and is the primary time domain measure used to estimate the vagally mediated changes reflected in HRV [heart rate variability].

Key term(s)
  • root mean square of successive R-R differences

French

Domaine(s)
  • Cœur
Key term(s)
  • moyenne quadratique des intervalles RR successifs

Spanish

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