[Dynamics of electrophysiological parameters of the heart in hypertensive patients depending on a 24-h profile of arterial pressure, left ventricular geometry and metabolic disorders].
OBJECTIVE
To examine conduction system and repolarization in the ventricles and heart rate variability in hypertensive patients with consideration of 24-h blood pressure profile, left ventricular (LV) geometry and metabolic disorders.


METHODS
24-h monitoring of blood pressure, diagnostic transesophageal electrostimulation of the left ventricle, echocardiography were made and duration and dispersion of QT interval, variability of the intervals R-R (SDNN) were assessed in 73 untreated patients aged 42 to 57 years with essential hypertension of the second degree.


RESULTS
It is shown that hypertensive patients having left ventricular hypertrophy (LVH), metabolic syndrome (MS) and pathologic 24-h blood pressure profile have also a depressed function of the sinus-atrial node and atrioventricular conduction, marked electric instability of the atria and ventricles. Such patients are at high risk to develop arrhythmia (3-5 times higher than patients without LVH, MS, with normal circadian blood pressure rhythm).


CONCLUSIONS
Electric heart remodeling associated with LVH, MS and disturbances of circadian blood pressure pattern enhances electric instability and risk to develop cardiac arrhythmia.
Iskenderov
B G
BG
Lokhina
T V
TV
Shibaeva
T M
TM
Kapelovich
V Iu
VIu
Kazantseva
L V
LV
D000328:Adult; D001794:Blood Pressure / Q000502:physiology*; D018660:Blood Pressure Monitoring, Ambulatory; D018450:Disease Progression; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008297:Male; D024821:Metabolic Syndrome / Q000150:complications* / Q000503:physiopathology; D008875:Middle Aged; D011379:Prognosis; D012849:Sinoatrial Node / Q000503:physiopathology; D020257:Ventricular Remodeling / Q000502:physiology*