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UDC 612.172.2:615.22:616.12
THE FREQUENCY OF USE OF COMBINATIONS OF ANTIHYPERTENSIVE DRUGS IN PATIENTS WITH DIFFICULT-TO-CONTROL HYPERTENSION ON THE BACKGROUND OF BIOFEEDBACK AND PACED BREATHING AND HEART RATE VARIABILITY
Tymoshenko O. S.1, Yabluchansky M. I.1, Bilchenko O. V.1'2
1 V. N. Karazin Kharkiv National University, Kharkiv, Ukraine
2 Kharkiv Medical Academy of Postgraduate Education, Kharkiv, Ukraine
The frequency of administration of combinations of antihypertensive drugs and its changes at different stages of observation was studied in 60 patients with difficult-to-control arterial hypertension (DTCAH) (32 men and 28 women) aged 59.0 ± 9.4. All patients were randomly divided into two subgroups: biofeedback (BFB) in the loop of paced breathing (PB) and heart rate variability (HRV) (33 patients) - basic subgroup, subgroup of comparisons (27 patients). Determined that patients with DTCAH in the subgroup of patients with the BFB in the loop of PB there has been a reduction of four-component antihypertensive therapy to three-component and in the subgroup of comparisons the frequency of the appointment of a four-component therapy was increased. At the same time, it was found that the addition of drug therapy with regular BFB sessions in the loop of PB contributed to the potentiation of the antihypertensive effect in patients with DTCAH. It is concluded that the BFB in the loop of PB and HRV can be used as a technology to improve the efficiency of control of blood pressure in patients with DTCAH.
KEY WORDS: difficult-to-control arterial hypertension, heart rate variability, biofeedback, paced breathing
ЧАСТОТА ПРИЗНАЧЕННЯ КОМБ1НАЦ1Й АНТИГ1ПЕРТЕНЗИВНИХ ПРЕПАРАТ1В У ПАЩеНТГО З ВАЖКО КОНТРОЛЬОВАНОЮ АРТЕР1АЛЬНОЮ ГШЕРТЕНЗ1СЮ НА ТЛ1 ПРОВЕДЕННЯ СЕАНС1В БЮЛОГ1ЧНОГО ЗВОРОТНОГО ЗВ'ЯЗКУ В КОНТУР1 МЕТРОНОМИЗИРОВАННОГО ДИХАННЯ
Тимошенко О. С.1, Яблучанський М. I.1, Бтьченко О. В.1'2
1 Харшвський нащональний ушверситет iMeHi В. Н. Каразша, м. Харшв, Украша
2 Харшвська медична aKaAeMia шслядипломно! освгги, м. Харшв, Украша
Вивчено частоту призначення комбшацш антиппертензивних препарапв та ii змши на pi3Hm етапах спостереження у 60 пащенпв з важкоконтрольованою артерiальною гiпертензieю (BAr) (32 чоловiки та 28 жшок) у вiцi 59,0 ± 9,4. Bei пацieнти випадковим чином були роздiленi на ABi пiдгрупи: з бiологiчним зворотним зв'язком (БЗЗ) в контурi метрономiзованного дихання (МД) (33 пацieнтiв) - основна тдгрупа та пiдгрупа порiвняння (27 пащенпв). Встановлено, що у пащенпв з BAr у пiдгрупi пащенпв з БЗЗ в контурi МД зазначаеться скорочення чотирикомпонентнш антигiпертензивноi' терапп до трикомпонентно!, а в шдгруш порiвняння зростае частота призначення чотирьохкомпонентно1 терапп. При цьому встановлено, що доповнення медикаментозно1 терапп регулярними сеансами БОС в контурi МД сприяе потенцiювання антигiпертензивного ефекту у пащенпв з ВАГ. Робиться висновок, що БЗЗ в контурi МД тд контролем параметрiв варiабельностi серцевого ритму (ВСР) може бути використана як технолопя тдвищення ефективностi контролю артерiального тиску при ВАГ.
КЛЮЧОВ1 СЛОВА: важко контрольована артерiальна гiпертензiя, варiабельнiсть серцевого ритму, бiологiчний зворотний зв'язок, метроном iзоване дихання
© Tymoshenko O. S., Yabluchansky M. I., Bilchenko O. V., 2018
Journal of V. N. Karazin KhNU. 2018
ЧАСТОТА НАЗНАЧЕНИЯ КОМБИНАЦИЙ АНТИГИПЕРТЕНЗИВНЫХ ПРЕПАРАТОВ У ПАЦИЕНТОВ С ТРУДНОКОНТРОЛИРУЕМОЙ АРТЕРИАЛЬНОЙ ГИПЕРТЕНЗИЕЙ НА ФОНЕ ПРОВЕДЕНИЯ СЕАНСОВ БИОЛОГИЧЕСКОЙ ОБРАТНОЙ СВЯЗИ В КОНТУРЕ МЕТРОНОМИЗИРОВАННОГО ДЫХАНИЯ
Тимошенко Е. С.1, Яблучанский Н. И.1, Бильченко А. В.1'2
1 Харьковский национальный университет имени В. Н. Каразина, г. Харьков, Украина
2 Харьковская медицинская академия последипломного образования, г. Харьков, Украина
Изучена частота назначения комбинаций антигипертензивных препаратов и ее изменения на различных этапах наблюдения у 60 пациентов с трудноконтролируемой артериальной гипертензией (ТАГ) (32 мужчины и 28 женщин) в возрасте 59,0 ± 9,4. Все пациенты случайным образом были разделены на две подгруппы: с биологической обратной связью (БОС) в контуре метрономизированного дыхания (МД) и вариабельности сердечного ритма (ВСР) (33 пациентов) -основная подгруппа, подгруппа сравнения (27 пациентов). Установлено, что у пациентов с ТАГ в подгруппе пациентов с БОС в контуре МД отмечается сокращение четырехкомпонентной антигипертензивной терапии до трехкомпонентной, а в подгруппе сравнения возрастает частота назначения четырехкомпонентной терапии. При этом установлено, что дополнение медикаментозной терапии регулярными сеансами БОС в контуре МД способствует потенцированию антигипертензивного эффекта у пациентов с ТАГ. Делается вывод, что БОС в контуре МД под контролем параметров ВСР может быть использована как технология повышения эффективности контроля АД при ТАГ.
КЛЮЧЕВЫЕ СЛОВА: трудноконтролируемая артериальная гипертензия, вариабельность сердечного ритма, биологическая обратная связь, метрономизированное дыхание
INTRODUCTION
Currently, treatment of difficult-to-control arterial hypertension (DTCAH) is an important problem due to the widespread prevalence of patients with DTCAH (30.4-31.8 % of the total population of patients with hypertension) [1], rapid progression of target organ damage and a high risk of cardiovascular events [2].
DTCAH is characterized by the inability to achieve target blood pressure values, despite the appointment of three or more antihypertensive drugs, including diuretics [3]. Due to the absence of randomized clinical trials, the selection of therapy for persons with TAG occurs empirically, taking into account national recommendations for the treatment of hypertension [4]. The best treatment strategy in this case is to select a combination of antihyper-tensive drugs, which will affect the various links of pathogenesis and physiological mechanisms of hypertension, as well as take into account the comorbidity of a particular patient.
OBJECTIVE
The aim of the work is to study the change in the frequency of prescribing combinations of antihypertensive drugs used in patients with DTCAH on the background of biofeedback (BFB) in loop of heart rate variability (HRV) and paced breathing (PB).
MATERIALS AND METHODS
On the clinical base of the Kharkov city outpatient clinic No. 24 and the State Institution «Kharkov Clinical Hospital for Railway Transport No. 1» 60 patients with DTCAH were examined (32 men and 28 women). Average age is 59,0 ± 9,4 years. All patients were ran-domly divided into two subgroups: with BFB in the loop of paced breathing (33 patients) - basic subgroup, subgroup of comparisons (27 patients).
The inclusion criteria in the study were any stage and degree of arterial hypertension (AH). The criterion of DTCAH was the presence of a persistent increase in BP above the target level, despite the simultaneous use of three or more antihypertensive drugs of various classes in adequate therapeutic doses, including a diuretic.
Exclusion criteria were heart failure functional class IV, acute coronary syndrome, rhythm and conduction disorders, diabetes mellitus, chronic respiratory insufficiency, bronchial asthma, chronic obstructive pulmonary diseases, peptic ulcer and duodenal ulcer at the stage of exacerbation, systemic diseases of connective tissue, tumors.
Drug therapy was carried out according to the Ukrainian recommendations on the management of patients with AH [4]. Taking into account the degree of severity of
hypertension, the presence of target organ damage and concomitant pathology in patients with DTCAH one of the following combinations of antihypertensive drugs was prescribed: Inhibitor of angiotensin converting enzyme (ACE)/blockers of the renin-angiotensin-aldosterone system (RAAS) + calcium channel blocker (CCB) + diuretic; ACE inhibitor/blocker of the RAAS + CCB + diuretic + antagonist of mineralocorticoids; Beta-blocker + ACE inhibitor/blocker of the RAAS + CCB + diuretic; ACE inhibitor/blocker of the RAAS + CCB + diuretics + hypotensive drugs of the central action.
BFB was carried out on the computer diagnostic complex CardioLab 2009 («HAI-Medica», Ukraine) with the module «Biofeedback», including software-related visual-sonic metronome breathing and dynamic
Both groups of patients before the beginning of the séances were dominated by the administration of a combination ACE inhibitor/blocker of the RAAS + CCB + diuretic. In the subgroup of patients with BFB in the loop of PB combinations of ACE inhibitor/blocker of the RAAS + CCB +
algorithm for determining the current values of HRV parameters, changing under the influence of PB. The breathing rate was set by the «Biofeedback» software module.
Statistical processing was carried out using Microsoft Excel. Qualitative variables described by relative values were used for statistical evaluation of the results: % and their deviation - o. The accuracy of differences between groups is determined by the parametric Student's T-test. The expected result was determined by the level of reliability p < 0.05.
RESULTS AND DISCUSSION
In table 1 the frequency of prescribing combinations of antihypertensive drugs used in patients with DTCAH in the subgroup of patients with BFB in the loop of PB and the subgroup of comparison at the observation stages - 3, 6 months and a year is presented.
diuretic + antagonist of mineralocorticoids, beta-blocker + ACE inhibitor/blocker of the RAAS + CCB + diuretic, ACE inhibitor/blocker of the RAAS + CCB + diuretic + hypotensive drugs of the central action were less frequently prescribed. The ratio of prescription of these combinations of drugs in the subgroup with
Table 1
Frequency of administration of antihypertensive drug combinations in patients with difficult-to-control hypertension during treatment (% ± c)
Subgroups of patients
Combinations of Patients with BFB in the loop of PB Comparison subgroup (BFB without PB)
antihypertensive drug Stages of therapy
Before 3 6 1 year Before 3 6 1 year
treatment month month treatment month month
ACE inhibitor/blocker 39,5 ± 4* 44,3 ± 5 46,3 ± 4 42,4 ± 5** 28,3 ± 6 25,3 ± 2 19,2 ± 4
of the RAAS + CCB + 45,5 ± 3
diuretic (% ± g)
ACE inhibitor/blocker
of the RAAS + CCB + 33,3 ± 3 * 33,3 ± 3 34,3 ± 4
diuretic + antagonist of 36 ± 4 21 ± 3** 45 ± 3 48 ± 5 50 ± 4
mineralocorticoids
(% ± g)
Beta-blocker + ACE
inhibitor/blocker of the 24,2 ± 20,6 ± 19,4 ± 18,5 ± 2 34,6 ± 4 21,1 ± 18,4 ± 20 ± 3
RAAS + CCB + 3* 3 2 ** 3 5
diuretic (% ± g)
ACE inhibitor/blocker
of the RAAS + CCB + 10,8 ± 3
diuretics + hypotensive 3 ± 2* 1,8 ± 2 0 ± 0 0 ± 0 2 ± 1** 5,6 ± 3 8,3 ± 4
drugs of the central
action (% ± g)
Journal of V. N. Kctrazin KhNU. 2018
BFB in the loop of PB was 13:11:8:1, at the stage of 3 month observation -24,6:18,5:11,4:1, at the stage of 6 month observation - 3:5,7:1,8:1 and at the stage of annual observation this ratio was 2,5:1,9:1: 0. This indicates that the dominance of the assignment of combination ACE inhibitor/blocker of the RAAS + CCB + diuretic was preserved, and also it was noted the declining trend in antihypertensive therapy from four-component to three-component. Frequency of assignment combination which includes beta-blocker + ACE inhibitor/blocker of the RAAS + CCB + diuretic decreased in 1,3 times. Combination of ACE inhibitor/blocker of the RAAS + CCB + diuretic + hypotensive drugs of the central action at the annual stage of treatment wasn't use.
In the subgroup of comparison, the initial ratio of combinations of antihypertensive drugs changed from 21,2:10,5:17,3:1 to 5:8:4.8:1 at the three - month stage, 7:4,6:2,2:1-at the semiannual stage and by the end of the year of observation it was 1,7:4,6:1,8:1. At the annual stage of therapy, the predominant combination was a combination of ACE inhibitor/RAAS blocker + BCC + diuretic + mineralocorticoid antagonist, the frequency of administration increased by 2,4 times. There was also an increase of administration of combination ACE inhibitor/blocker of the RAAS + CCB + diuretics + anti-hypertensive drugs of central action (in 5,4 times). On the contrary, the frequency of administration of combination ACE inhibitor/RAAS blocker + BKK + diuretic decreased by 2,2 times, which demonstrates the predominance of four-component antihyperten-sive therapy at the annual stage in patients with DTCAH without PB.
The obtained results , according to which the addition of drug therapy with BFB in the loop
of PB allows achieving better blood pressure control in patients with DTCAH, are in accordance with the data in patients with controlled AH [5-7]. However, publications on the effectiveness of BFB in the loop of PB in patients with DTCAH, are absent in the literature.
Our observations confirm the need for combined antihypertensive therapy in patients with DTCAH. The addition of drug therapy by regular BFB sessions in the loop of PB has an additional effect on the neurohumoral regulation, which contributes to the potentiation of the antihypertensive effect.
The results show that the addition of antihypertensive therapy by BFB in the loop of HRV and PB reduces the number of prescribed drugs.
CONCLUSIONS
1. The addition of drug therapy with regular BFB sessions in the loop of PB contributes to the potentiation of the antihypertensive effect in patients with DTCAH.
2. There is reduction of four-component antihypertensive therapy to three-component in the subgroup of patients with BFB in the loop of PB. On the contrary in the comparison subgroup the frequency of administration of four-component therapy increases.
3. BFB in the loop of HRV and PB control can be used as a technology to improve the effectiveness of control blood pressure in patients with DTCAH.
PROSPECTS FOR FURTHER RESEARCHES
In the future, it seems appropriate to study the dynamics of parameters of BFB and blood pressure in patients with the DTCAH at various stages of treatment.
REFERENCES
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