- MeSH
- antikoagulancia * aplikace a dávkování terapeutické užití MeSH
- aplikace orální MeSH
- lidé středního věku MeSH
- lidé MeSH
- podpůrné srdeční systémy * MeSH
- prospektivní studie MeSH
- srdeční selhání farmakoterapie terapie MeSH
- výsledek terapie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- dopisy MeSH
- randomizované kontrolované studie MeSH
Mechanical circulatory support (MCS) with an implantable left ventricular assist device (LVAD) is an established therapeutic option for advanced heart failure. Most of the currently used LVADs generate a continuous stream of blood that decreases arterial pulse pressure. This study investigated whether a change of the pulse pressure during different pump speed settings would affect cerebral autoregulation and thereby affect cerebral blood flow (CBF). The study included 21 haemodynamically stable outpatients with a continuous-flow LVAD (HeartMate II, Abbott, USA) implanted a median of 6 months before the study (interquartile range 3 to 14 months). Arterial blood pressure (measured by finger plethysmography) was recorded simultaneously with CBF (measured by transcranial Doppler ultrasound) during baseline pump speed (8900 rpm [IQR 8800; 9200]) and during minimum and maximum tolerated pump speeds (8000 rpm [IQR 8000; 8200] and 9800 rpm [IQR 9800; 10 000]). An increase in LVAD pump speed by 800 rpm [IQR 800; 1000] from the baseline lead to a significant decrease in arterial pulse pressure and cerebral blood flow pulsatility (relative change ?24% and ?32%, both p < 0.01), but it did not affect mean arterial pressure and mean CBF velocity (relative change 1% and ?1.7%, p = 0.1 and 0.7). In stable patients with a continuous-flow LVAD, changes of pump speed settings within a clinically used range did not impair static cerebral autoregulation and cerebral blood flow.
- MeSH
- dospělí MeSH
- hemodynamika * MeSH
- lidé středního věku MeSH
- lidé MeSH
- mozkový krevní oběh * MeSH
- podpůrné srdeční systémy statistika a číselné údaje MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- srovnávací studie MeSH
Transplantace srdce (HTx) se stala zavedenou metodou léčby terminálního srdečního selhání. V lednu 2021 uplynulo 37 let od zahájení klinického programu transplantace srdce v Institutu klinické a experimentální medicíny (IKEM). Do konce roku 2020 bylo provedeno 1 242 transplantací srdce. Ke zlepšení výsledků přispělo nejen zdokonalení chirurgické techniky, ale také pokroky v imunosupresivní léčbě. Součástí programu transplantace srdce jsou mechanické srdeční podpory (MSP), které umožňují kriticky selhávajícím nemocným překlenout období do chvíle, než je vhodný dárce srdce („most k transplantaci“). Imunosuprese používaná v současnosti je spojena s velmi dobrým dlouhodobým přežíváním srdečního štěpu, pětiletým u 76 % a desetiletým u 65 % pacientů. Péče o nemocné po transplantaci srdce přináší určité specifické problémy, kterými jsou především odhojování (rejekce) štěpu, infekce, malignity, koronární nemoc štěpu a nežádoucí účinky imunosupresivní profylaxe. Důležitá je spolupráce transplantační ambulance s praktickými lékaři a dalšími odborníky.
Heart transplantation (HTx) is now an established treatment method in patients with end‑stage heart failure. In January 2021 we celebrated 37th anniversary of launching clinical heart transplant program at Institute for Clinical and Experimental Medicine (IKEM). Since then, 1,242 heart transplants have been performed by the end of December 2020. Based on our experiences, optimizing outcomes depends not only on improved surgical techniques but also on advances in immunosuppressive therapy. Mechanical circulatory support (MCS) as apart of heart transplantation programme, they have become ahighly efficient method of maitaining the condition of critically failing patients until asuitable donor can be found (“bridge to transplant“). Current immunosuppressive treatment is associated with very good long‑term survival after HTx, 5 years in 76% and 10 years in 65% of patients. Clinical follow‑up of heart transplant recipients is associated with some specific problems, such as graft rejection, infections, malignancies, cardiac allograft vasculopathy, and adverse effects of immunosuppressives. Therefore, long‑term follow up of patients after heart transplantation requires close cooperation between specialized outpatient clinic, practitioners and other specialists.
- MeSH
- ambulantní péče MeSH
- imunosupresivní léčba metody škodlivé účinky MeSH
- kontraindikace léčebného výkonu MeSH
- lékové interakce MeSH
- lidé MeSH
- management nemoci MeSH
- pooperační komplikace MeSH
- směrnice pro lékařskou praxi jako téma MeSH
- transplantace srdce * metody škodlivé účinky MeSH
- Check Tag
- lidé MeSH
AIMS: Diabetes mellitus, chronic obstructive pulmonary disease, and chronic kidney disease are prevalent in patients with heart failure with reduced ejection fraction (HFrEF). We have analysed the impact of co-morbidities on quality of life (QoL) and outcome. METHODS AND RESULTS: A total of 397 patients (58.8 ± 11.0 years, 73.6% with New York Heart Association functional class ≥3) with stable advanced HFrEF were followed for a median of 1106 (inter-quartile range 379-2606) days, and 68% of patients (270 patients) experienced an adverse outcome (death, urgent heart transplantation, and implantation of mechanical circulatory support). Chronic obstructive pulmonary disease was present in 16.4%, diabetes mellitus in 44.3%, and chronic kidney disease in 34.5% of patients; 33.5% of patients had none, 40.0% had one, 21.9% had two, and 3.8% of patient had three co-morbidities. Patients with more co-morbidities reported similar QoL (assessed by Minnesota Living with Heart Failure Questionnaire, 45.46 ± 22.21/49.07 ± 21.69/47.52 ± 23.54/46.77 ± 23.60 in patients with zero to three co-morbidities, P for trend = 0.51). Multivariable regression analysis revealed that furosemide daily dose, systolic blood pressure, New York Heart Association functional class, and body mass index, but not the number of co-morbidities, were significantly (P < 0.05) associated with QoL. Increasing co-morbidity burden was associated with worse survival (P < 0.0001), lower degree of angiotensin-converting enzyme inhibitor/angiotensin receptor blocker treatment (P = 0.001), and increasing levels of BNP (mean of 685, 912, 1053, and 985 ng/L for patients with zero to three co-morbidities, P for trend = 0.008) and cardiac troponin (sm-cTnI, P for trend = 0.0496), which remained significant (P < 0.05) after the adjustment for left ventricular ejection fraction, left ventricular end-diastolic diameter, right ventricular dysfunction grade, body mass index, and estimated glomerular filtration rate. CONCLUSIONS: In stable advanced HFrEF patients, co-morbidities are not associated with impaired QoL, but negatively affect the prognosis both directly and indirectly through lower level of HF pharmacotherapy and increased myocardial stress and injury.
- MeSH
- funkce levé komory srdeční MeSH
- kvalita života * MeSH
- lidé MeSH
- morbidita MeSH
- následné studie MeSH
- srdeční selhání * epidemiologie MeSH
- tepový objem MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
BACKGROUND: B-type natriuretic peptide (BNP) is a strong predictor of prognosis in chronic heart failure. We aimed to evaluate the clinical correlates and interpretation of BNP monitoring in LVAD out-patient recipients. METHODS: We performed a prospective study in 136 individuals after HeartMate II LVAD implantation. During follow-up they were divided into group A (severe adverse events requiring hospitalisation), group B (mild to moderate adverse events) and group C (an uneventful course). BNP was measured pre-implant, at the first out-patient visit, and then every 2 months. We identified the lowest level, and the level at the clinical event and/or the highest value in patients without clinical events (BNP peak). RESULTS: During a median follow-up of 298 days, 8 patients (6%) died, 21 patients (15%) experienced a severe adverse event (group A) and 38 patients (28%) had other adverse event (group B). Both the absolute value of BNP peak and its percentage values relative to pre-implant, first visit and minimum BNP had similar areas under the curve (AUC) to identify individuals with adverse events (group A and B) from group C. The performance of BNP peak rose from detection of infection to diagnosis of heart failure and culminated in individuals with pump thrombosis (AUC 0.68 vs. 0.75 vs. 0.93). CONCLUSIONS: Serial measurement of BNP in outpatients with LVAD correlates with the occurrence of adverse events. Assessment of absolute values of BNP peak seems to have a similar accuracy to analysis of intra-individual variation of BNP and it is more practical.
- MeSH
- ambulantní monitorování metody MeSH
- ambulantní péče metody MeSH
- biologické markery metabolismus MeSH
- dospělí MeSH
- dysfunkce levé srdeční komory krev terapie MeSH
- infekce spojené s protézou krev diagnóza MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladý dospělý MeSH
- natriuretický peptid typu B metabolismus MeSH
- plocha pod křivkou MeSH
- podpůrné srdeční systémy * MeSH
- pooperační komplikace krev diagnóza MeSH
- prospektivní studie MeSH
- senioři MeSH
- srdeční selhání krev terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
BACKGROUND: Continuous blood flow could have deleterious effects on endothelium and vascular health. This could have serious consequences in patients with heart failure treated with continuous flow left ventricular assist devices (LVAD). Therefore, we studied effect of LVAD on three circulating vascular biomarkers: stem cells (SC), endothelial progenitor cells (EPC) and microparticles (MP). METHODS: In 23 patients (5 women) with end-stage heart failure, SC, EPC and MP were measured before, and 3 and 6months after implantation of LVAD (HeartMate II). SC were defined using determination of surface antigen expression as mononuclear CD34+/CD45low+ cells and EPC as mononuclear CD34+/CD45low+/KDR+ cells. MP concentrations were determined by ELISA method. RESULTS: Three months after LVAD implantation numbers of SC and EPC significantly decreased (p=0.01 and p=0.001, respectively). On the contrary, between 3rd and 6th month after implantation they significantly increased (p=0.006 and p=0.003, respectively).MP did not change significantly during the study despite exerting similar trend as SC and EPC. CONCLUSIONS: Observed biphasic changes of SC and EPC might reflect two processes. First, shortly after LVAD implantation, improved tissue perfusion could lead to decrease in ischemic stimuli and ensuing decrease of SC and EPC. Second, continuous flow between 3rd and 6th month produced by LVAD could lead to increase of SC and EPC through activation of endothelium. This explanation could be supported also by similar trend in the changes of concentrations of MP.
- MeSH
- časové faktory MeSH
- cévní endotel cytologie fyziologie MeSH
- dospělí MeSH
- endoteliální progenitorové buňky fyziologie MeSH
- kmenové buňky fyziologie MeSH
- lidé středního věku MeSH
- lidé MeSH
- longitudinální studie MeSH
- mladý dospělý MeSH
- následné studie MeSH
- počet buněk trendy MeSH
- podpůrné srdeční systémy trendy MeSH
- prospektivní studie MeSH
- senioři MeSH
- srdeční komory * MeSH
- srdeční selhání krev patofyziologie terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- pozorovací studie MeSH
