[Heart rate variability in hypertensive patients living in the region of Tyumen Ob].

AIM: To examine heart rate variability (HRV), some biochemical and echocardiographic indices in hypertensive patients living in the Tyumen Ob region.

MATERIAL AND

METHODS

Registration of HRV, blood count and echocardiography were made in natural conditions of the North in 52 hypertensive patients (36 males, 16 females, age 20-50) living in Tyumen Ob region and 32 healthy controls (19 males, 13 females) matched by age and residence.

RESULTS

Time and spectrum analyses of HRV indices show predominance of the sympathetic link of heart rhythm autonomic regulation in hypertensive patients. Night shifts affect the activity of the sympathetic link of heart rate autonomic regulation destroying its circadian pattern both in hypertensive and normotensive patients.

CONCLUSION

Healthy persons initially experience overactivity of the regulatory systems and have the risk for cardiovascular diseases. Working at night shifts accelerates functional exhaustion.