| Author/Editor | Šega, S | |
| Title | Ocenjevanje funkcije avtonomnega živčevja pri človeku. 3. standardizacija nekaterih kardiocirkulatornih testov pri zdravih preiskovancih | |
| Translated title | Assessment of human autonomic nervous system function. 3. Standardization of some cardiocirculatory tests in healthy human subjects | |
| Type | članek | |
| Source | Zdrav Vestn | |
| Vol. and No. | Letnik 61, št. 1 | |
| Publication year | 1992 | |
| Volume | str. 3-6 | |
| Language | slo | |
| Abstract | Background: Testing cardiocirculatory reflexes is one method of evaluating the functions of the aulonomous nervous system. The article presents standardization of these reflexes in healthy examinees in relation to their age. Methods: In a group of 79 healthy volunteers aged 21 to 60 years the range of normal values was determined for selected classical cardiocirculatory tests (Valsalva manoeuvre, deep breathing, handgrip test, orthostatic test) and for special analysis of the variability of the cardiac freguency. Results: The Valsalva ratio, respiratory sinus arrhythmia during deep breathing, heart rate changes during the handgrip test and the ratio between the maximal and minimal R-R intervals in the orthostatic test decrease with ageing. Ageing also reduces the area under the spectral peaks and changes the ratio between them. The relative share of the surface of the high-freguency peak (0.15-0.45Hz) decreased with age and that of the lowfrequency peak (0.001 - 0.05 Hz) increased. Conclusions: The analysis of classical cardiocirculatory tests has shown the great variability of tests between individual examinees, so using a range of border values is proposed for evaluating such tests. None of the tests showed any statistically significant differences regarding sex. The spectral analysis showed the parasympathetic nervous system tonus predominating in young examinees and the sympathetic nervous system tonus predominating in older subjects. | |
| Descriptors | HEART FUNCTION TESTS AUTONOMIC NERVOUS SYSTEM VALSALVA'S MANEUVER ELECTROCARDIOGRAPHY ADULT BLOOD PRESSURE HEART RATE AGE FACTORS SPECTRUM ANALYSIS |