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Original Researches
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UDC 616.24-007.271-036.12-07:[577.125+616.12-005] DOI: 10.22141/2224-0586.1.96.2019.158747
T.S. Ospanova, Zh.D. Semydotska, I.O. Chernyakova, O.V. Avdeyeva, O.M. Pionova, N.S. Tryfonova Kharklv National Medical University, Kharkiv, Ukraine
Features of lipid profile and cardiohemodynamics in chronic obstructive pulmonary disease and comorbidities
Abstract. Background. Chronic obstructive pulmonary disease is a classic example of a comorbid condition characterized by a combination with coronary artery disease, hypertension, and metabolic syndrome. The purpose of the study was to investigate the features of the correlation between the lipid spectrum and echocardiography parameters in patients with chronic obstructive pulmonary disease, coronary artery disease and hypertension. Materials and methods. Thirty-five patients with chronic obstructive pulmonary disease and comorbidity (57.14 % of males, 42.86 % of females) were examined. The average age was 57.0 years, the mean duration of the disease — 10.02 [5.0—15.0] years. Twenty three patients had comorbidity with coronary artery disease and hypertension, 11 persons had type 2 diabetes mellitus, 8patients — coronary artery disease (cardiosclerosis, angina pectoris), 4 individuals — stage 2 hypertension. Results. Patients were divided into 3 groups: B (n = 12), C (n = 14), D (n = 9). In group B, 3positive significant correlations of aortic diameter with total cholesterol, low and very low density lipoproteins were revealed. In group C, there are 2 correlations with systolic pressure in pulmonary artery:positive — of low density lipoproteins and negative — of high-density lipoproteins, and negative association between triglycerides and left ventricular diastolic volume. In group D, the number of correlations increases to 6: correlations of low density lipoproteins with parameters of right atrium and right ventricle appear, as well as left ventricle. It was noted that an increase in the severity of chronic obstructive pulmonary disease and comorbidity with hypertension does not lead to increased number of correlations, but coronary artery disease increases the number of correlations 2-fold. Conclusions. As the severity of the chronic obstructive pulmonary disease progresses, the number of correlations between the lipid spectrum and structural and functional state of the myocardium increases according to the echocardiography data.
Keywords: comorbidity; chronic obstructive pulmonary disease; echocardiography
The mind that opens to a new idea never returns to its original size.
Albert Einstein
Introduction
Chronic obstructive pulmonary disease (COPD) is one of the current problems of contemporary medicine due to the rapid increase in morbidity, disability and mortality rates (more than 30 % in 10 years), high
treatment costs and decline in the patient's quality of life [1—5]. COPD will have taken the third place among the mortality causes by 2030 according to the World Health Organization [2, 6].
At the end of the 20th century, the number of patients with persistent combinations of various diseases had increased rapidly. Those combinations were called comorbidities [7, 8]. Comorbidity has become the main informational source for studying the general mechanisms of various diseases [9].
© «Медицина невщкладних сташв» / «Медицина неотложных состояний» / «Emergency Medicine» («Medicina neotloznyh sostoanij»), 2019 © Видавець Заславський О.Ю. / Издатель Заславский А.Ю. / Publisher Zaslavsky O.Yu., 2019
Для кореспонденци: Оспанова Тетяна, доктор медичних наук, професор, кафедра пропедевтики внутршньоТ медицини № 2 та медсестринства, Харшський нацюнальний медичний ушверситет, пр. Науки, 4, м. Харш, 61022, УкраТна, факс: +380577050209, e-mail: [email protected], тел.: +380509988242
For correspondence: Tatyana Ospanova, MD, PhD, Professor, Department of Propaedeutics of Internal Medicine 2 and Nursing, Kharkiv National Medical University, Nauky Ave., 4, Kharkiv, 61022, Ukraine, fax: +380577050209, e-mail: [email protected], phone: +380509988242
The prevalence of concomitant diseases in patients with COPD is higher than in the whole population [10— 12]. It attests that COPD is a classic example of a comor-bid condition, which is characterized by a combination with coronary artery disease (CAD), arterial hypertension (AH), and metabolic syndrome.
In recent years, there has been a growing interest in studies of structural and functional disorders of the myocardium using echocardiography in COPD with AH and CAD comorbidity [3, 13—16]. The possibility of early diagnosis of heart failure, diastolic dysfunction of both ventricles by means of echocardiography is noted [17, 18]. However, a consensus about the nature of right and left ventricular dysfunction and its relationship with COPD is not found [19].
The results of studying the structural and functional parameters of the myocardium in COPD using echocardiography indicate the effect of pulmonary hypertension not only on the right ventricle (RV), but also on the left ventricle (LV). It is so-called inter-ventricular interaction, which is caused by the anatomical and electrophysiological connections of both ventricles.
Cardiac remodeling in COPD and cardiovascular comorbidity (CAD and AH) is recognized as a universal process based on chronic systemic inflammation [11, 12, 20]. COPD is one of the most frequent causes of both ventricles diastolic dysfunction [15].
The achievements of modern network science in the field of molecular biology, genome and molecular genetics made it possible to study the causes of comorbidity at the body, cellular, molecular, genetic levels. Also, they enable to show the importance of cell signaling between these components and to allocate a new discipline, network medicine, representing a perspective approach to understanding diseases from a network point of view, reclassification of complicated syndromological diseases [21—24]. These achievements allow selecting a special group of syntropic diseases with similar etiological and pathogenetic mechanisms. The similarity between these diseases is determined by the general predisposition genes. The modification of universal network processes at the genomic, molecular and cellular levels leads to the development of syntropic diseases. They manifest at the organ and body levels in systemic chronic inflammation of target organs. This creates new properties of various systems (emergence), which are difficult to explain using only the signs of individual diseases and their components.
It is believed that network approaches will be used to integrate several genotypes to investigate the patho-genesis of the disease and to resolve the problem of synthropy and comorbidity in further studies of COPD genetics.
All of the above emphasizes the urgency of studying the problems of pathogenesis, comorbidity, synthropy, diagnosis, and treatment of COPD.
The purpose: to investigate the relationships between the lipid and echocardiography parameters in COPD in the frame of CAD and AH comorbidity.
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Materials and methods
The study was designed according to the principle of integrativity. This article presents the results of investigating lipid spectrum parameters (total cholesterol (TC), triglycerides (TG), high density lipoproteins (HDL), low density lipoproteins (LDL), very low density lipoproteins (VLDL), atherogenic index (AI)) and their correlation with echocardiography data. The diagnosis of COPD was made in accordance with the criteria represented in the report of the GOLD working group (2018). The lung function was studied using a computer spirograph Spi-rokom. The European Society of Cardiology guidelines (2013) were used to verify the diagnosis of AH and CAD.
The serum levels of TC, TG, HDL, LDL and VLDL were determined by a standard biochemical method, AI was calculated.
The study of the structural and functional state of the heart was carried out with the help of echocardiography using standard methods with determination of the LV end diastolic volume (LV EDV), LV end diastolic dimensions (LV EDD), posterior wall thickness in diastole (PWD), interventricular septum thickness (IVS thickness), LV mass index (LV MI), ejection fraction (EF), pulmonary artery systolic pressure, aortic root diameter (ARD), RV end diastolic dimensions (RV EDD) on Philips HD11 ultrasound machine.
Thirty-five COPD patients with CAD and AH co-morbidity were examined, 57.14 % of them were men and 42.86 % — women. The average age was 57.0 [54.0— 67.0] years and the mean disease duration — 10.02 [5.0—15.0] years. Twenty-three patients had CAD and AH comorbidity, 11 patients — type 2 diabetes mellitus, 8 patients — CAD (cardiosclerosis, stable angina pecto-ris), and 4 patients — stage 2 AH.
The statistical analysis was performed by nonpara-metric methods of the Statistica 10 package. Kruskal-Wallis one-way analysis of variance was used to determine the differences between independent groups. The dependence between the variables was evaluated using the Spearman correlation coefficient (R). A cluster analysis of the obtained data was also carried out; dendrograms (trees of variable) were constructed for graphical display of the results.
Results and discussion
COPD patients were divided into 3 groups: B (n = 12), C (n =14), D (n =9). In group B, 8.33 % of patients didn't have comorbidity, 16.6 % were diagnosed with CAD, 58.33 % — AH in combination with CAD (3 persons had postinfarction cardiosclerosis). In group
C, 21.43 % of patients did not have comorbidity; 28.7 % had CAD; 50 % — AH combined with CAD. In group
D, all patients had comorbidity: 22.22 % — CAD and 77.78 % — AH in combination with CAD.
The signs of atherogenic dyslipidemia (an increasing level of atherogenic lipid fractions and a decreasing level of anti-atherogenic fractions) were revealed in the whole COPD group, as well as in patients with AH and CAD comorbidity (Table 1). A comparative analysis of the lipid profile (Table 1) indicates an upward trend in LDL
and AI levels in case of CAD comorbidity (as compared to the group without CAD). These differences are especially significant for total cholesterol and TG (p < 0.05). AH comorbidity is also accompanied by an upward trend in total cholesterol, TG, VLDL, LDL levels and downward — in HDL.
Comparative analysis of echocardiography data (Table 2) revealed changes in parameters of both ventricles, which are more significant in AH and CAD co-morbidity. Signs of the RV, RA and LV remodeling are also revealed. Changes in pulmonary blood flow lead to an increase in pulmonary artery systolic pressure, right
heart strain, in structural and functional changes of the right heart, which are more pronounced in comorbidity. It should be noted that the average value of IVS thickness exceeds the normal values in all groups of patients with COPD, regardless of the presence of comorbidity that is probably a manifestation of interventricular interaction.
The analysis of significant correlations with the lipid profile in the group of COPD patients revealed a moderate positive correlation between TC and C-reactive protein (CRP) (R = 0.55), which indicates the lipid participation in the systemic inflammation development.
Table 1. Comparative characteristics of the lipid profile depending on the presence of comorbidity
Parameter COPD COPD with CAD COPD without CAD COPD with AH COPD without AH
Total cholesterol, mmol/l 6.20 [4.80-6.45] 6.20 [5.3-6.5] 5.70* [4.80-6.40] 6.34 [4.80-6.34] 6.13 [5.45-6.78]
HDL, mmol/l 1.21 [1.12-1.37] 1.30 [1.15-1.37] 1.14 [1.12-1.18] 1.23 [1.12-1.37] 1.30 [1.15-1.40]
TG, mmol/l 2.76 [1.47-3.22] 2.78 [1.46-3.24] 1.69* [1.55-2.70] 2.80 [1.46-3.24] 2.12 [1.53-2.99]
LDL, mmol/l 3.70 [3.0-4.22] 3.96 [3.20-4.22] 3 45 [2.44-3.68] 4.20 [2.44-4.22] 3.96 [3.21-4.39]
VLDL, mmol/l 0.85 [0.48-1.13] 0.82 [0.53-1.13] 0.94 [0.48-1.10] 1.10 [0.53-1.10] 0.94 [0.30-1.45]
AI 3.47 [2.86-4.50] 3.55 [3.03-4.50] 3.55 [2.55-4.43] 3.55 [2.60-4.50] 3.35 [3.04-4.58]
Note: * — a significant difference between the indices in the COPD group with CAD and without CAD (p < 0.05).
Table 2. Comparative characteristics of structural and functional parameters of the heart depending
on the presence of comorbidity
Parameter COPD COPD without CAD COPD with CAD COPD without AH COPD with AH
LV EDV, ml 154.00 [104.00-195.00] 127.50 [67.00-192.00] 154.00 [130.00-195.00] 104.00* [68.00-179.00] 165.00 [142.00-202.00]
LV EDD, cm 5.80 [4.80-6.21] 4.71* [4.60-4.80] 5.89 [4.92-6.32] 4.80» [4.70-4.90] 6.10 [5.80-6.43]
LV ESD, cm 4.40 [3.65-4.90] 3.60 [3.35-3.87] 4.50 [3.82-4.92] 3.80*** [3.40-3.87] 4.65 [4.40-5.10]
EF, % 63.00 [58.00-65.00] 64.00 [61.00-65.00] 63.00 [58.00-65.00] 64.00 [60.50-65.50] 63.00 [58.00-65.00]
PWD, cm 1.30 [1.10-1.30] 1.10** [1.00-1.30] 1.30 [1.10-1.40] 1 15#### [1.05-1.30] 1.30 [1.20-1.40]
IVS thickness, cm 1.30 [1.20-1.40] 1.20*** [1.10-1.20] 1.30 [1.10-1.40] 1.25 [1.15-1.35] 1.30 [1.20-1.40]
LV MI, g/m2 86.00 [76.00-96.00] 77.00 [74.00-93.00] 86.00 [76.00-96.00] 76.00A [75.00-82.00] 88.00 [84.00-96.00]
ARD, cm 2.80 [2.60-3.20] 2.65 [2.50-3.00] 2.90 [2.70-3.20] 2.85 [2.70-3.10] 2.80 [2.40-3.20]
MPAP, mmHg 29.50 [26.00-38.00] 27.00 [23.00-28.00] 35.50 [26.50-38.00] 28.50 [37.00-41.50] 32.00 [25.00-38.00]
RV EDD, cm 3.80 [2.70-4.20] 3.05 [2.40-3.70] 4.00 [2.70-4.30] 3.25 [2.55-3.65] 4.01 [2.70-4.30]
RV ESD, cm 2.70 [2.30-3.30] 2 40**** [2.30-2.50] 2.90 [2.00-3.60] 2.40 [1.75-3.10] 2.90 [2.40-3.60]
Notes: significant difference between the indicators in the group of COPD with CAD and without CAD: * — p = 0.0080, ** — p = 0.0346, *** — p = 0.0276, **** — p = 0.0511; significant difference between the indicators in the group of COPD with AH and without AH: # — p = 0.0401, ** — p = 0.0001, *** — p = 0.0012, **** — p = 0.0368, A — p = 0.0120.
Significant correlations between indices of lipid profile and echocardiogram were found, namely, TG and LV EDV (R = -0.35), LDL and IVS thickness (R = 0.41), ARD and TC (R = 0.48), LDL (R = 0.36), VLDL (R = 0.42), and AI (R = 0.36) (Fig. 1).
Significant correlations were found in group B between ARD and total cholesterol (R = 0.63), LDL (R = 0.79), VLDL (R = 0.68), between HDL and body mass index (R = 0.69), patients' waist circumstance (R = 0.58) and between the level of bronchial obstruction reversibility with HDL (R = -0.62) and AI (R = -0.62).
In group C, there is a high positive correlation of CRP with total cholesterol (R = 0.80) and LDL (R = 0.95) that indicates the involvement of lipids in the systemic inflammation in COPD. There are negative correlations between the level of TG and ARD (R = -0.54), positive correlations between ARD and total cholesterol (R = 0.57) and VLDL (R = 0.55). Also, correlations were revealed between HDL and MPAP (R = -0.55), LDL and MPAP (R = 0.67).
Positive correlations between LDL and PWD (R = 0.71), VLDL and RV ESD (R = 0.82), as well as correlations between TG and LV EDD (R = -0.70), HDL and LV EDV (R = -0.88) were noted in group D.
In the whole COPD group, 7 positive correlations were detected between lipid profile and indicators of structural and functional state of the heart: four — between ARD and TC, LDL, VLDL, AI, one — LV EDV and TG, one — PWD with LDL and one — IVS thickness with VLDL. There are 3 positive significant correlations of ARD with TC, LDL, and VLDL in group B. There are 2 correlations with MPAP — positive with LDL and negative with HDL, as well as negative association between TG and LV EDV in group C. The correlation number increases to 6 in group D: correlations of LDL with RA, RV and LV parameters appear.
Analysis of correlation in the group without CAD comorbidity revealed 2 correlations between LDL and ARD (R = 0.85), as well as LV EDD (R = -0.83). The number of significant relationship increases with CAD comorbidity (5 correlations), namely, between total cholesterol and CRP (R = 0.50) indicating lipid participation in systemic inflammation, between ARD and total cholesterol (R = 0.43) and VLDL (R = 0.45), as well as between LDL and IVS thickness(R = 0.39), furthermore, weak positive correlation between VLDL and EF (R = 0.37), which is hardly applicable.
In COPD patients without AH, there were 3 significant correlations between structural and functional parameters of the heart and lipidogram indices: between HDL and LV EDV (R = -0.68), TG and EF (R = 0.66), as well as LV EDD (R = 0.70).
The number of correlations between lipid levels and echocardiographic data increased (5 correlations) in case of COPD with AH comorbidity, namely, between TC and ARD (R = 0.51), LDL and IVS thickness (R = 0.45), ARD (R = 0.44) and RV ESD (R = 0.54).
Therefore, lipids form a large number of correlations with various indices in COPD (anthropometry,
m
Figure 1. Relationships between lipidogram and echocardiographic indices
spirometry, systemic inflammation, carbohydrate metabolism), including 9 correlations with indicators of the structural and functional state of the heart. An increase in COPD severity and AH comorbidity do not lead to an increase in the number of correlations, except for CAD when the number of correlations is two-fold increased. It is also important to note close correlation links between the lipid profile indices and the parameters of the structural and functional state of the heart. In general, the correlations were quite expected indicating lipid influence on RA, RV, LV and aortic remodeling, as well as the development of pulmonary hypertension.
Without any doubt, there is an association between RV and LV, which is due to the commonality of the anatomical structure, blood supply, interventricular septum, pericardium, the continuity of muscle syncytium, the overall effect of pressure, the chest volume and elasticity. Compensatory hyperfunction is accompanied by the fi-brosis development, violation of the diastolic filling of both ventricles, and then systolic dysfunction. RV failure leads to a decrease in LV filling and in cardiac output.
The obtained data indicate a certain order of the severity of the lipid and echocardiography relationships in COPD. Apparently, these trends point out the processes of adaptation and maladaptation of the body to hypoxia that occurs and progresses in COPD.
Figure 2. Cluster analysis of lipid spectrum and myocardium structural and functional state
An increase in the correlations with the so-called comorbidity may be a consequence of the synthropy between COPD, AH and atherosclerotic processes. AH in COPD is considered as pulmogenic, it develops after several years of COPD, the pathogenetic basis of AH is hypoxia [25]. Remodeling of the cardiovascular system similar to that in AH is observed before its clinical manifestation. It is emphasized that even a slight increase in blood pressure in COPD is a high additional risk of cardiovascular complications and target organ damage [25].
In order to classify the obtained data, to establish hierarchical algorithms, the cluster analysis (Fig. 2) of the structural and functional state of the myocardium and lipid spectrum was performed. Dendrograms were constructed for groups of patients with COPD as a whole, as well as for group B, C, D.
These indicators form 2 clusters, which include different echocardiography and lipid spectrum indicators. In all COPD group, the first cluster included ARD, LV EDD, RV EDD, RV ESD combined with AI and LDL. TG is relatively remote from these indicators. The second cluster includes PWD, IVS thickness and HDL, which are located close to each other and further away from the VLDL. Total cholesterol is the most distant from both clusters. It should be noted that the first cluster includes RV and LV functional parameters, and the second cluster — PWD and IVS thickness. Both clusters are combined with TG.
Cluster analysis of the indicators in groups B, C, D that differed by the severity of the patients' condition was also carried out. In all groups, the structure of the dendrograms is preserved — there are two clusters. However, the localization of TG varies depending on the severity of COPD and comorbidity. Thus, in group B triglycerides, as well as total cholesterol act as an autonomous indicator, in group C, triglycerides become a cluster-forming index in the first cluster; in group D, triglycerides localize in the second cluster, i.e. move to the "structural" cluster. Perhaps, the reformatting of dendrograms depending on the severity of COPD reflects the processes of adaptation and maladaptation.
The similarity of dendrograms in all groups (generally COPD, COPD of groups B, C, D) reflects the unity of the echocardiography and lipid spectrum networks. Lipids, especially TG, whose role in clusters depends on the severity of the process, are the "nodes" of this network.
Already detected genes — candidates let us suggest that hypertension and atherosclerosis in patients with COPD and CAD is a manifestation of network links between lipid metabolism and myocardium and allow us to consider these phenomena within the framework of a single disease combining a phenome and a genome in diseasome.
This approach will allow us to search the drugs that affect the network metabolic "nodes" as targets at the cellular and molecular levels. This will help prevent polypragmasy, which is unavoidable in comorbi-
dity. Statins with their pleiotropic action according to the numerous studies are discussed as such drugs [22]. The practitioner now has a difficult task: to determine empirically the phenotypic features of the disease in each patient, to evaluate the results of routine accessible research methods, anatomical, pathophysiological features, to evaluate their network relationships using the modern possibilities of the network theory, to find the signs of synthropy and to choose a pleiotropic medicinal product that will help avoid polypragmasy, by affecting many links ("nodes", "hub") of the network pathological process [12].
Conclusions
1. Atherogenic dyslipidemia develops in case chronic obstructive pulmonary disease with coronary artery disease and hypertension comorbidity, and is accompanied by echocardiography signs of myocardial remodeling. The revealed correlation reflects the relationship between these indicators.
2. As the severity of chronic obstructive pulmonary disease progresses, the number of correlations between lipid spectrum and structural and functional state of the myocardium increases according to the echocar-diography data. In the whole group of patients and in group B, there are lipid links with only left ventricular echocardiography data; in group C, the correlation with systolic pressure in pulmonary artery appears, in group D — with right atrial, right ventricular, left ventricular parameters.
3. The accession of hypertension and coronary artery disease is accompanied by an increase in the number of correlations and their nature: in coronary artery disease, there are 5 links, without it, there are 2 links; in hypertension, there are 5 correlations, without it — 3.
4. Correlation and cluster analyzes suggest that the obtained data reflect the interactions of various nodes of the diseasome network and can be evaluated as signs of the synthropy of chronic obstructive pulmonary disease, hypertension and atherosclerosis.
Conflicts of interests. Authors declare the absence of any conflicts of interests that might be construed to influence the results or interpretation of their manuscript.
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Received 30.11.2018 ■
Оспанова Т.С., СемидоцькаЖ.Д., Чернякова 1.О., Авдеева О.В., Пюнова О.М., Трифонова Н.С. Харювський нацональний медичний у^верситет, м. Харюв, Украна
Особливост ладного профкю та кардюгемодинамки при хроычному обструктивному захворюванн легень та коморбшносп
Резюме. Актуальтсть. Хрошчне обструктивне захво-рювання легень е класичним прикладом коморбщного стану, що характеризуеться поеднанням iшемiчноi хво-роби серця, артерiальноi ппертензи та метаболiчного синдрому. Метою дослщження було вивчення особливос-тей взаемозв'язку мiж параметрами лшщного спектра та ехокардюграфи в пащентав iз хрошчним обструктивним захворюванням легень, iшемiчною хворобою серця та артерiальною гiпертензiею. Матерiалu та методы. Об-стежено 35 пащентав iз хрошчним обструктивним захворюванням легень i коморбщною патолопею (57,14 % чо-ловтв, 42,86 % жшок). Середнш вш становив 57,0 рошв, середня тривалiсть захворювання — 10,02 [5,0—15,0] року.
У 23 пащенпв виявлено коморбщшсть з iшемiчною хворобою серця та артерiальною гiпертензiею, 11 омб мали цукровий дiабет 2-го типу, 8 — iшемiчну хворобу серця (кардюсклероз, стенокард1я), 4 — артерiальну гшертен-зш. Результаты. Пащенти були роздшеш на 3 групи: В (п = 12), С (п = 14), D (п = 9). У груш В виявлено 3 пози-тивш вiрогiднi кореляци дiаметра аорти з рiвнями загаль-ного холестерину, лшопротмшв низь^ та дуже низь^ щшьносп. У грут С е 2 кореляци з тиском у легеневш артери: позитивна — вмюту лшопротмшв низь^ щшь-ност та негативна — лшопротмшв висо^ щшьносп, а також негативний зв'язок мiж рiвнем триглщервддв та дiа-столiчним об'емом лiвого шлуночка. У грут D кшьтсть
кореляцiй зб1льшуеться до 6: з'являються кореляцii BMicTa лiпопротеiнiв низь^ щiльностi з параметрами правого передсердя та шлуночка, а також лiвого шлуночка. Було зазначено, що кшьшсть кореляцiй зростае удвiчi за умо-ви коморбiдностi з iшемiчною хворобою серця. Висновки. Прогресування хронiчного обструктивного захворювання
легень та його поеднання iз супутнiми станами приводить до збшьшення кiлькостi кореляцшних зв'языв мiж лшщ-ним спектром та показниками ехокардюграфи, особливо при коморбщносл з iшемiчною хворобою серця. Ключовi слова: коморбiднiсть; хронiчне обструктивне захворювання легень; ехокардiографiя
Оспанова Т.С., СемидоцкаяЖ.Д., Чернякова И.О., Авдеева О.В., Пионова О.М., ТрифоноваН.С. Харьковский национальный медицинский университет, г. Харьков, Украина
Особенности липидного профиля и кардиогемодинамики при хронической обструктивной болезни легких и коморбидности
Резюме. Актуальность. Хроническая обструктивная болезнь легких является классическим примером ко-морбидного состояния, характеризующегося сочетанием ишемической болезни сердца, артериальной гипертен-зии и метаболического синдрома. Целью исследования было изучение особенностей взаимосвязи между параметрами липидного спектра и эхокардиографии у пациентов с хронической обструктивной болезнью легких, ишемической болезнью сердца и артериальной гипер-тензией. Материалы и методы. Обследовано 35 пациентов с хронической обструктивной болезнью легких и сопутствующей патологией (57,14 % мужчин, 42,86 % женщин). Средний возраст составил 57,0 года, средняя продолжительность заболевания — 10,02 [5,0—15,0] года. У 23 пациентов выявлена коморбидность с ишемической болезнью сердца и артериальной гипертензией, у 11 пациентов был сахарный диабет 2-го типа, у 8 — ишемиче-ская болезнь сердца (кардиосклероз, стенокардия), у 4 — артериальная гипертензия. Результаты. Пациенты были разделены на 3 группы: В (п = 12), С (п = 14), D (п = 9). В группе В выявлены 3 положительные достоверные кор-
реляции диаметра аорты с уровнями общего холестерина, липопротеинов низкой и очень низкой плотности. В группе С имеются 2 корреляции с давлением в легочной артерии: положительная — содержания липопротеинов низкой плотности и отрицательная — липопротеинов высокой плотности, а также отрицательная связь между уровнем триглицеридов и диастолическим объемом левого желудочка. В группе D число корреляций увеличивается до 6: появляются корреляции содержания липопротеинов низкой плотности с параметрами правого предсердия и желудочка, а также левого желудочка. Было отмечено, что при коморбидности с ишемической болезнью сердца количество корреляций увеличивается в два раза. Выводы. Прогрессирование хронической обструктивной болезни легких и ее сочетание с сопутствующими состояниями приводит к увеличению количества корреляционных связей между липидным спектром и показателями эхокардиографии, особенно при комор-бидности с ишемической болезнью сердца. Ключевые слова: коморбидность; хроническая обструктивная болезнь легких; эхокардиография
