Heart Rate Variability: for real doctors. Primary requirements. Long records

Yabluchansky N.I., Martynenko A.V.

Heart rate variability: for real doctors. Translation from the Russian version of the book, published at Kharkiv, 2010, 131 p.
The basics and practice of the clinical use of the technology of heart rate variability are outlined for doctors of all specialties and students of medical faculties of universities.

Long records

Long records are obtained by the method of ambulatory electrocardiography (AECG). If they are intended to be used in the assessment of regulation, they must meet the requirements of the short record protocol; otherwise, the results are difficult to interpret. The point is that only fragments of the rhythmogram that satisfy the protocol of short recordings should be analyzed from long records.
There are no long records without a diary. Why at the moment cuts rhythm and signs of autonomic balance shift toward rapid regulation? Because the patient was sleeping? Because he (she) took beta-blockers? … Or because he (she) was merely “relaxed” after physical stress?
Therefore, the person examination during the study demands reflections the details of his (her) behavior in the diary in refers to walking, driving a car, training sessions, stress, etc., as well as to the time of eating and taking medications, and so on.
Long and short records
• Russian recommendations are limited to short entries.
• The recommendations of the European Society of Cardiology and the American Society of Electrophysiology and Heart Stimulation suggest restraint in analyzing long records.
We say yes for analysis of short records and of short intervals on long records according to a diary.
Average daily HRV does not reflect the current moment in regulation, but only shows the global power ratio of its frequency spectra. Average daily HRV, in other words, does not reflect regulation in itself.

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