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ORIGINAL ARTICLES
Aim. To assess reliability and discriminant validity of the Russian version of European Scale of Self-care in patients with heart failure (HF).
Material and methods. European Scale of self-help assessment in CHF was translated in Russian according to Brislin model by three not related translators. After discussion by the workgroup members, professional translator retranslated back it to English, and the result was agreed with the author of the score. Then, 95 patients were included with chronic HF (CHF) of various etiology, who responded the questions at admittance and discharge from cardiological departments. Cronbach alpha was used for analysis of intrinsic consistency of the score. Also discriminant validity was evaluated.
Results. Edication of CHF patients led to decrease of the whole points summ from 27,7±6,6 at admittance to 15,8±4,5 by discharge event. Coefficient of intrinsic consistency Cronbach alpha of the Russian version of European Scale was 0,826. Absence of significant relation of total points summ from Kansas questionnaire for cardiomyopathy patients and Minnessota questionnaire of life quality in HF proved discriminant validity of the Russian version.
Conclusion. Russian version of European Scale of Self-help for patients with HF is easy to use and convenient instrument, which might be helpful for clinical trials as for clinical practice.
Aim. Comparison of diagnostical abilities of tissue Doppler (TD) and speckle tracking (ST) for assessment of segmental diastolic dysfunction in postinfarction focal changes of myocardium (PIFC) of LV.
Material and methods. Totally, 137 CHD patients studied. In analysis of TD and ST we assessed peaks of early and delayed transmitral LV fillings. Assessment of transmitral parameters of diastolic dysfunction was done with common approach.
Results. The study showed that in PIFC persons there is no significant differences by most of transmitral flow parameters and TD. Strain rate assessment of myocardial deformation and ST led to conclusion on mostly delayed filling peak decrease, which is one of the signs of segmental diastolic dysfunction of the LV in PIFC.
Conclusion. TD and ST make it to reveal covert disorders of diastolic LV relaxation in PIFC patients with absence of diastolic dysfunction criteria by TMBF.
Aim. To find out the significance of different signs of electric instability in acute myocardial infarction patients for on time prediction of in-patient course and adverse outcome by the next year.
Material and methods. 98 men studied, with acute Q-infarction. For electrical instability assessment at hospital stage Holter monitoring was done of high resolition ECG on 1st, 7th day and at discharge.
Results. It is found that in-hospital course can be forecasted by the following data from acute phase: presence of dangerous ventricluar extrasystoli, ventricular and atrial tachicardias paroxysms, decrease of circadian index of heart rate <1,06 (risk of complications) and <0,98 (risk of fatal outcome), prolonged QTc >473 ms (complications risk) and >498 ms (fatal outcome risk), onset of delayed ventricular potentials. We developed the probable predictors of the range of adverse events for in-patient period that is important for any patient management. It is proved, that fatal outcome risk in katamnesis does increase if in-patient period is complicated by left ventricle failure, if frequent ventricular extrasystoli develop or frequent paroxysms of ventricular and supraventricular tachicardia, with absence of significant decrease of dangerous ventricular extrasystoli on further monitors, as in absence of positive dynamics at in-patient stage (from the first to the second monitor) of the values of the following parameters of electrical instability of myocardium: increase of low pNN50 and shortening of prolonged QTc and its dispersion.
Conclusion. Prediction of complicated course of acute myocardial infarction and adverse outcome during the first year can be grounded on complex analysis of the parameters of electrical instability and arrhythmic activity of myocardium by the data of triple Holter monitoring of electrocardiogram of high resolution during in-hospital period, and the best predictive value have data from acute period and its dynamics.
Aim. To study the role of volumetric load in assessment of diastolic reserve of the left ventricle (LV) and to reveal informative predictors of transmitral diastolic flow for heart failure development in myocardial infarction patients without systolic LV dysfunction.
Material and methods. Totally, 40 males studied with primary Q-wave myocardial infarction without clinical signs of heart failure with the baseline LV ejection fraction 50-55%. Statistical analysis was performed via Excel 5.0. Standard methods of variational statistics were applied: mean values, standard deviation. Significance of differences was assessed with t-criteria by Student.
Results. In patients with myocardial infarction at volume load there were 2 types of transmitral diastolic flow. 1 group — patients, who had ipsidirectional changes of transmitral diastolic flow, as the healthy: significantly increased Е and А (p<0,05), not changed Е/А, shortened IVRT of LV and Tdec (p<0,002). 2 group — patients, who at the load did not develop increase of Е (p>0,05), had significantly increased А by 12% (p<0,002) and hence decreased Е/А (p<0,05), and significantly prolonged IVRT of LV and Tdec (p<0,05); changes did not return to baseline by 5 minutes of recovery period.
Conclusion. 1) load test of VDLT is safe and informative method for DR of LV estimation and for revealing of high risk congestive HF in MI. 2) in patients with decreased DR of LV in VL there is decrease of E, significant increase of A, decrease of E/A and prolongation of IVRT and Tdec, during postinfarction period in 27,3% cases congestive HF does develop. 3) in patients with MI and remaining DR of LV during postinfarction period the congestive HF does not develop.
Aim. To study in dynamics the specifics of hemostasis and functioning of neutrophilic granulocytes in patients with acute myocardial infarction (MI) sensitive and resistant to acetylsalicylic acid (ASC).
Material and methods. Totally, 53 patients included during first 24 hours from MI onset. Controls were 50 relatively healthy volunteers. All patients before treatment and revascularization were assessed for resistance to ASC and selected to groups as sensitive (SASC) and resistant (RASC). In complex therapy there was double antiplatelet therapy (ASC+clopidogrel). The parameters of vessel-platelet and plasma hemostasis were assessed. Via the chemiluminescent analysis we studied functional activity of neutrophils.
Results. In RASC patients with MI on 1st and 10th day we found increased ADP aggregation of thrombocytes (ADP 0,1 mcM) and increase of von Willebrand factor. On 10th day in SASC patients there was decrease of ADP aggregation (ADP 5 mcM), von Willebrand factor increases. Not related to ASC sensitivity, in MI patients there is increase of SFMC, thrombin time is increased and D-dimer is low. Kinetics of chemiluminescence of neutrophils in MI patients differs from controls only by increased time of reached maximum. In ASC resistant patients on 1st day of evaluation there is decrease of neutrophil activation index, which gets to normal by 10th day of treatment.
Conclusion. In RASC MI patients there is increased ADP aggregation of platelets, decrease of platelets number and increase of von Willebrand factor levels. Thrombosis risk in RASC patients on 10th day of treatment is caused by remaining disordered vessel-platelet hemostasis and increased spontaneous platelets aggregation. Plasmatic hemostasis on 1st and 10th days of MI shows activated onset of clotting with increase of clotting duration and significant decrease of D-dimer. In MI there is slowed velocity of development of “respiratory boost” in neutrophilic granulocytes that is probably related to compensatory processes in organism and double antiplatelet therapy which is antiinflammatory as well.
Aim. To assess microcirculatory reserves and tissue metabolism reactivity in patients with coronary heart disease (CHD) with various stages of chronic heart failure (CHF).
Material and methods. Totally, 112 CHD patients included. First group (45 persons) consisted of those with CHF I-II FC, second (67 persons) — CHF III-IV FC. By the method of laser-doppler flowmetry (LDF) we studied reserves of cutaneous microcirculatory blood flow (MBF) of lower extremities. Reactivity of tissue metabolism of lower extremities was assessed by transcutaneous oxymetry (ТсрО2 ). Using monofactorial logistic regression, we calculated predictors of adverse cardiovascular events in long-term period after coronary bypass operation (CBG).
Results. MBF level between groups did not differ significantly. Reserves of capillary flow (RCF) in the 1st group were higher than 2nd — 169,1±2,25% and 147,3±2,46% from baseline, respectively, (p=0,01). Lowest efficacy of oxygen supply to peripheral tissues was found in 2nd group (p=0,03). Reserves of metabolic activity of tissues during postocclusion hyperemia — RTmО2 in 1st and 2nd groups were 143,2±2,24% and 125,4±2,86% from baseline, respectively, (p=0,01). Monofactorial logistic regression analysis revealed: 1) RCF lower 125% with 2 type diabetes do increase odds for surgically significant stenoses in lower limbs arteries after CBG in long-term perspective (OR 3,8; CI 1,9-6,5; p=0,002); 2) ejection fraction of the LV lower 40%, increased homocysteine >15,5 mcM/L and RTmО2 less than 120% do increase odds for stroke in long-term period after CBG (OR 4,1; CI 2,2-7,8; p=0,001).
Conclusion. Relation of hypoxia in peripheral tissues at the background of LV dysfunction and hyperhomocysteinemia with development of stroke in long-term period after CBG, as baseline low RCF and DM 2 type with the development of lower limb arteries stenoses after CBG points on the necessity of emphasis on the assessment of microcirculatory reserves as one of leading vascular complications components.
Aim. The influence of depression on the performance of education program and active outpatient control (the “influence”) in patients with heart failure of III-IV functional class.
Material and methods. The post-hoc analysis of the SHANS study (School and Ambulatory Observation of Heart Failure Patients), organized by the society of specialists in heart failure (SSHF), was done for the odds estimation for primary endpoints (mortality from any cause, cardiovascular hospitalization, combination endpoint — mortality and hospitalization) in patients from treatment group depending on the presence of depression sympthoms (HADS(d) >11 pts. As the subgroups of depressed and non-depressed differed by functional class and age, the correction was appliaed by the method of Mantel-Hensel for thse two parameters. Values of mean survival rate was calculated, from the moment of baseline assessment to the moment of death with further build-up of Kaplan-Meier curves.
Results. The influence showed effectiveness for the all endpoints in depression subgroups, as in non-depressed. Depressed patients reacted a little worse on the program, but there were no any statistical significance for the risk of primary endpoints. Corrected combination endpoint: non-depressed [OD =0,3806 (95% CI 0,2107-0,6876)], depressed [OR =0,4699 (95% ДИ 0,3128-0,7058)], p=0,5651. In analysis by Kaplan-Meier endowment curves it was shown that patients randomized to influence group had lower risk of death. Decrease of relative risk was higher in non-depressed [(RRR =25% (95% CI 0,61; 0,94), p<0,001)], than in depressed [(RRR =17% (95% CI 0,68; 0,99), p=0,036)]. However the effectiveness of the influence was same in both subgroups.
Conclusion. The educational and active ambulatory control program, by the secondary analysis data, showed effectiveness in patients with sympthoms of depression. For better reproducibility of such studies more precise diagnostic parameters for depression diagnostics are required.
Aim. To assess the function of the right ventricle (RV), its influence on clinical and instrumental presentation of chronic heart failure (CHF) in patients with hypertrophic cardiomyopathy (HCMP).
Material and methods. Totally, 55 patients with HCMP included, males 17 (34%), mean age — 57,0±15,2 y. All patients were taking bisoprolol 5,7±1,2 mg. The study included assessment of clinical status of patients with Minnessota score of life quality in CHF, SQCA, brain natriuretic peptide (BNP) measurement in plasma, echoCG. With the aim to deeper investigate on cardiac function we asessed Tei index of the left ventricle (LV) and RV. As the result of all studies in HCMP there was increase of Tei of LV. Increase of RV Tei was found in 35 patients (63,6%). By Tei RV value, patients were selected to 2 groups: 1 group (n=35) — those with Tei RV higher than normal — ≥0,32 (0,58±0,2), 2 group (n=20) — with Tei RV <0,32 (0,23±0,09).
Results. Patients from group 1 had higher clinical and laboratory markers of CHF: FC CHF by NYHA (p=0,008), summ by SQCA (p=0,03), BNP level in plasma 200 (p=0,01). In 1st group patients there was higher E/A (p=0,04), transmitral flow, lower regional systolic velocity on septal part of mitral annulus (MVFA) (p=0,04), free wall of tricuspid valve fibrous annulus (TVFA) (p=0,01), longer the time of isovolumetric relaxation on lateral (p=0,04) and posterior (p=0,03) regions of MVFA. There was negative correlation of Tei RV index and peak A (p=0,0007) and postitve — with E/A of transmitral flow (p=0,01). There was correlation of FC CHF by NYHA and s’ of free wall of TVFA (p=0,04); positive association of Tei RV and FC level of CHF by NYHA, BNP (p=0,01). There was negative association of BNP and systolic function of RV: s’ TVFA (p=0,01), s’ of basal part of RV free wall (p=0,002), s’ of median part of RV free wall (p=0,02).
Conclusion. Presence of RV dysfunction by Tei index was found in 63,5% of patients with HCMP. RV dysfunction in HCMP is due to severely disordered diastolic dysfunction of LV, is followed by progression of CHF — increase of FC CHF, SQCA points summ, BNP level and decrease of segmental longitudinal function of myocardium by TDI.
Aim. To conduct complex evaluation of MI risk factors in men taking their agespecific qualities, and to invent prediction calculator of MI based upon the data obtained.
Material and methods. Totally, 112 males with Q and non-Q MI included, at the age 45-74 y.o., mean age — 58,9±0,6 y.o. In all patients we assessed clinical and anamnestic data, parameters of lipid, carbohydrate metabolism, sex hormones levels, CRP, levels of hypodynamia, depression and anxiety via questionnaires.
Results. For males of adult age with MI the most significant factors were smoking, lipid disorders (mostly due to LDL increase), overweight and abdominal obesity; for older males — additionally arterial hypertension (AH), hypodynamia, inheritance for coronary heart disease (CHD), carbohydrate metabolism disorders with insulin resistance, and abdominal obesity.
Conclusion. To predict the risk of MI with statistical methods, a calculator was invented, which make it to estimate the probability of MI development in a patient taken their age-specific risks.
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