The signs of hyperventilation syndrome are detected among hypertensive patients, but are notnoticed by doctors that in some way can complicate the progression of the hypertension. It was established during the research that for the hypertensive syndrome and its extent of reveal verification, besides standardized Nijmegen questionnairespirometry or diaphragm amplitude can be used. It was established, that among group of hypertensive patients (n=43) with the signs of hyperventilation syndrome, the decrease of lung ventilation figures in accordance to proper magnitude was revealed. Specifically, such figures as vital capacity, forced expiratory volume in 1 sec, inspiratory and expiratory reserve volume, peak expiratory flowwere accurately lower. The reveled changes increased after conducting of the hyperventilation probe among all patients of the main group. At the same moment only among 28,57 % of patients from control group (n=14), without signs of hyperventilation syndrome, according to the survey, the violation of lung ventilation from slight (21,43 %) to moderate (7,14 %) was revealed under the hyperventilation probe. Besides that, among patients from the main group the limitation of diaphragm amplitude was noticed in comparison to results gained in the control group which became stronger under the forced breathing. The revealed changes among hypertensive patients require on time diagnostic and correction.