[Relationship between various clinical parameters and duration and variability of Q-T and R-R intervals in ECG (an epidemiological population study)].

AIM

To study the relationship between clinical values of a standard epidemiological study of a male population and the length and variability of Q-T and R-R intervals.

MATERIAL AND METHODS

A representative sampling from a male population (2184 subjects aged 25-64 years) in Novosibirsk was examined using standard epidemiological methods. Later 251 men were excluded from the study because of impossibility of correct analysis of ECG. The length and dispersion of Q-T interval and time parameters of variability of R-R interval were evaluated.

RESULTS

The size and variability of Q-T and R-R intervals are associated with age and AP irrespective of other clinical parameters of a simultaneous epidemiological study. The length of R-R interval is independently related to body weight index, tobacco smoking, and plasma triglyceride level. R-R variability parameters are associated with coronary disease irrespective of the risk factors.

CONCLUSION

Scanning studies with complex analysis of Q-T and R-R interval duration and variability effectively detect subjects at a high risk of arrhythmias and fatal events.