Introduction Recently more attention has been placed on right ventricle (RV) parameters in acute settings. The present study investigates echocardiographic RV parameters in patients with acute heart failure (AHF) or non-AHF acute dyspnoea. Purpose To determine the patterns of RV injury in different profiles of acute dyspnoea. Methods Prospective multicentre observational study included 1455 acutely dyspnoeic patients from 2015 to 2017. RV focused echocardiography was performed during the first 48 hours in 452 (31%) patients. They were compared in three patient profiles based on cause of dyspnoea and history of chronic HF (CHF): 1) AHF; 2) Non-AHF with CHF (Non-AHF+CHF); 3) other non-AHF patients (Non-AHF+other). Results Significant differences in RV morphology and function were observed in the study groups (Table 1). RV global function assessed by tricuspid annular plane systolic excursion (TAPSE) and RV longitudinal shortening was mostly affected in AHF patients. This was accompanied by more enlarged RV and increased right atrial pressure (RAP), assessed by the inferior vena cava diameter and respiratory collapse. Less severely impaired RV function and increased RAP were also observed in non-AHF+CHF patients indicating RV involvement in the chronic disease. Normal RV parameters dominated in Non-AHF+other group, however pulmonary artery systolic pressure >40 mmHg was observed in all profiles, suggesting similar severity of pulmonary hypertension in cardiac or pulmonary causes of acute dyspnoea. Table 1. RV parameters in acute dyspnoea profiles Parameter AHF (n=291) Non-AHF + CHF (n=73) Non-AHF + other (n=88) p value LVEF, % 38 [25–55] 50 [40–55] 55 [50–55] <0.001 RV basal diameter, cm 4.5 [3.9–5.2] 4 [3.5–4.5] 4 [3.5–4.55] <0.001 TAPSE, cm 1.5 [1.2–1.8] 1.8 [1.6–2] 2 [1.5–2.4] <0.001 RV free wall strain, -% −15.3 [−19; −11.24] −19.3 [−24.5; −15.78] −23 [−24.5; −19.69] <0.001 Entire RV strain, -% −12.03 [−15.17; −9.11] −16.4 [−19.31; −10.5] −18 [−18.75; −16.9] <0.001 PASP >40, % 66% 51% 50% 0.039 IVC diameter, cm 2.4 [2–2.8] 2 [1.7–2.4] 1.8 [1.4–2.3] <0.001 IVC collapse, % 34.9 [19.7–50.2] 44.1 [28.7–59.3] 52.6 [35–72.7] <0.001 LVEF, left ventricular ejection fraction; RV, right ventricle; TAPSE, tricuspid annular plane systolic excursion; PASP, pulmonary artery systolic pressure; IVC, inferior vena cava; AHF, acute heart failure; CHF, chronic heart failure. Conclusions Our data confirm more pronounced acute failure of right ventricle in acute heart failure patients than in chronic heart failure patients admitted due to other causes of dyspnoea. Pulmonary hypertension is present in a majority of the acute dyspnoea patients. Acknowledgement/Funding The work was supported by the Research Council of Lithuania, grant Nr. MIP-049/2015 and approved by Lithuanian Bioethics Committee, Nr. L-15-01.
Introduction Acute heart failure (AHF) is frequently associated with congestion leading to elevation of cardiac filling pressure. The present study investigates echocardiographic parameters of diastolic function in patients with AHF or non-AHF aetiology of acute dyspnoea. Purpose To determine the patterns of diastolic dysfunction in different profiles of acute dyspnoea. Methods Prospective multicentre observational study included 1455 acutely dyspnoeic patients in emergency departments from 2015 to 2017. Echocardiography was performed during the first 48 hours in 452 (31%) patients assessing left ventricular (LV) parameters. They were compared in four patient profiles based on dyspnoea cause and history of chronic HF (CHF): 1) AHF; 2) acute coronary syndrome without adjudicated AHF (Non-AHF+ACS); 3) non-AHF with CHF (Non-AHF+CHF); 4) other non-AHF patients (Non-AHF+other). Data were analysed using R statistical package. Results Significant differences in LV morphology and function were observed in the groups (Table 1). Increased LV filling pressure (E/E' >13) was found in most of AHF and Non-AHF+ACS patients, and in around 1/4 of Non-AHF+CHF group. Furthermore, more pronounced left-sided remodelling was observed in the first two groups. 1/3 of AHF patients had restrictive pattern of LV filling. Normal filling pressure dominated in Non-AHF+CHF and Non-AHF+other subgroups. LV parameters in acute dyspnoea profiles Parameter AHF (n=291) Non-AHF + ACS (n=43) Non-AHF + CHF (n=44) Non-AHF + other (n=74) p value Age, years 71 [62–78] 72 [64–78] 71 [65–80] 68 [56–74] 0.045 LVEF, % 38 [25–55] 47 [32–55] 55 [45–55] 55 [50–55] <0.001 LV MMI, g/m2 126 [104.6–150.4] 99.1 [82.9–124] 94.4 [78.3–108.6] 79.6 [70.7–99.4] <0.001 LAVi, cm3 61.7 [50.9–81.1] 40.4 [35.5–46.8] 43.2 [39.8–58.9] 37.2 [32.6–43.8] <0.001 E/E' >13, % 57.7% 57.1% 23.1% 2.9% <0.001 E/E' <10, % 23.4% 38.1% 76.9% 70.6% <0.001 E/A >2, % 34.4% 14.8% 12.5% 3.9% <0.001 E/A <1, % 30.3% 59.3% 66.7% 74.5% <0.001 LVEF, left ventricular ejection fraction; LVdd, left ventricular diastolic diameter; LV MMI, left ventricular myocardial mass index; LAVi, left atrial volume index; AHF, acute heart failure; ACS, acute coronary syndrome; CHF, chronic heart failure. Conclusions Our data confirm the predominance of an increased cardiac filling pressure in acute heart failure patients, differently from chronic heart failure patients admitted due to other causes of dyspnoea. Patients with dyspnoea due to acute coronary syndrome frequently demonstrate elevated left-sided filling pressure. Acknowledgement/Funding The work was supported by the Research Council of Lithuania, grant Nr. MIP-049/2015 and approved by Lithuanian Bioethics Committee, Nr. L-15-01.
Introduction The relationship of glomerular filtration rate (GFR) to the remodelling of right (RV) and left ventricle (LV) in acute settings is not well studied. Purpose To investigate the relationship of renal function to LV and RV echocardiographic parameters in acute dyspnoea patients. Methods Echocardiography was performed in 438 patients with acute dyspnoea in prospective multicentre observational study during the first 48 hours after presentation. Echocardiographic quantification included the following parameters: tricuspid annular plane systolic excursion (TAPSE), velocity of the tricuspid annular systolic motion (RV S'), RV fractional area change (FAC), RV basal diameter, entire RV strain, strain of free RV wall, inferior vena cava (IVC) and LV parameters. Patients were divided into groups according to the GFR (ml/min/1.73m2): Normal or mildly decreased GFR (≥60), moderately decreased GFR (30–59) and severely decreased GFR (≤29). Data were analysed using One-way ANOVA. Results Mean GFR in this cohort was 63±26 ml/min/1.73m2. The severity of RV remodelling and venous congestion was significantly different in three subgroups of renal dysfunction. The distribution of parameters Normal or mildly decreased GFR Moderately decreased GFR Severely decreased GFR N=233 (52%) N=166 (38%) N=39 (9%) TAPSE (cm) 1.8±0.3 1.5±0.5 1.4±0.4* RV FAC (%) 41±15 38±13 29±12*§ RV S' (cm/s) 11.0±3.3 9.7±3.4 9.1±4.2*§ Strain of RV free wall (%) −19±7 −16±6 −13±5*§ Strain of entire RV (%) −15±5 −12±5 −11±5* IVC collapsibility (%) 46±26 38±25 36±28* PASP (mmHg) 44±16 48±15 51±16*§ LVEF (%) 43±15 38±14* 46±16§ LV internal diameter in diastole (cm) 4.6±2.1 4.3±2.3 4.4±2.0 LV myocardial mass index (g/m2) 119±40 122±39 114±25 NT-proBNP (ng/l) 1485 [471; 3409] 5282 [1499; 10695] 6677 [1971; 15522]*§ Troponin T (ng/l) 55±18 92±19* 95±12* Admitted due to AHF (%) 59 72* 67 Admitted due to pulmonary causes (%) 22 21 28 *p<0.05 compared to GFR ≥60 ml/min/1.73m2, §p<0.05 compared to GFR (30–59 ml/min/1.73m2). Conclusions The progressive impairment of renal function coupled with larger congestion is associated with a significant right-sided but not left-sided ventricular remodelling in acute dyspnoea patients. Acknowledgement/Funding The work was supported by the Research Council of Lithuania, grant Nr. MIP-049/2015 and approved by Lithuanian Bioethics Committee, Nr. L-15-01.
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