Baroreception sensitivity

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Baroreception sensitivity indicates how many milliseconds the interval between two heartbeats changes , if blood pressure changes by 1 mmHg. Physiologically, this is between 10-15 ms → a drop in blood pressure of 10 mmHg will trigger an increase heart rate from 70 beats/min to 80.[1]

Baroreception sensitivity can be measured. Baroreflex oscillates with a frequency of 0.1 Hz due to delays in the regulatory circuit. Thus, by continuously measuring blood pressure and heart rate, we can calculate the baroreeptive sensitivity according to the formula:


where is baroreception sensitivity, spectral performance (amount of rhythm) of the heart rate curve, spectral performance of the systolic blood pressure curve.[2]

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  1. FRANĚK, Miloslav – VACULÍN, Šimon. Fyziologie a klinická fyziologie :  principy a praktická cvičení. 1. edition. R.B.C, 2009. 132 pp. ISBN 978-80-254-5409-1.
  2. STANČÁK, Andrej – STEJSKAL, Vítězslav. Centrální ovlivnění barorecepčního reflexu : Praktické cvičení z fyziologie. Praha : Ústav normální, klinické a patologické fyziologie, 3. LF UK, 1998,