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1.
N Engl J Med ; 385(20): 1845-1855, 2021 11 11.
Article in English | MEDLINE | ID: mdl-34758252

ABSTRACT

BACKGROUND: In patients with symptomatic heart failure, sacubitril-valsartan has been found to reduce the risk of hospitalization and death from cardiovascular causes more effectively than an angiotensin-converting-enzyme inhibitor. Trials comparing the effects of these drugs in patients with acute myocardial infarction have been lacking. METHODS: We randomly assigned patients with myocardial infarction complicated by a reduced left ventricular ejection fraction, pulmonary congestion, or both to receive either sacubitril-valsartan (97 mg of sacubitril and 103 mg of valsartan twice daily) or ramipril (5 mg twice daily) in addition to recommended therapy. The primary outcome was death from cardiovascular causes or incident heart failure (outpatient symptomatic heart failure or heart failure leading to hospitalization), whichever occurred first. RESULTS: A total of 5661 patients underwent randomization; 2830 were assigned to receive sacubitril-valsartan and 2831 to receive ramipril. Over a median of 22 months, a primary-outcome event occurred in 338 patients (11.9%) in the sacubitril-valsartan group and in 373 patients (13.2%) in the ramipril group (hazard ratio, 0.90; 95% confidence interval [CI], 0.78 to 1.04; P = 0.17). Death from cardiovascular causes or hospitalization for heart failure occurred in 308 patients (10.9%) in the sacubitril-valsartan group and in 335 patients (11.8%) in the ramipril group (hazard ratio, 0.91; 95% CI, 0.78 to 1.07); death from cardiovascular causes in 168 (5.9%) and 191 (6.7%), respectively (hazard ratio, 0.87; 95% CI, 0.71 to 1.08); and death from any cause in 213 (7.5%) and 242 (8.5%), respectively (hazard ratio, 0.88; 95% CI, 0.73 to 1.05). Treatment was discontinued because of an adverse event in 357 patients (12.6%) in the sacubitril-valsartan group and 379 patients (13.4%) in the ramipril group. CONCLUSIONS: Sacubitril-valsartan was not associated with a significantly lower incidence of death from cardiovascular causes or incident heart failure than ramipril among patients with acute myocardial infarction. (Funded by Novartis; PARADISE-MI ClinicalTrials.gov number, NCT02924727.).


Subject(s)
Aminobutyrates/therapeutic use , Angiotensin Receptor Antagonists/therapeutic use , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Biphenyl Compounds/therapeutic use , Heart Failure/prevention & control , Myocardial Infarction/drug therapy , Ramipril/therapeutic use , Valsartan/therapeutic use , Aged , Aminobutyrates/adverse effects , Angiotensin Receptor Antagonists/adverse effects , Angiotensin-Converting Enzyme Inhibitors/adverse effects , Biphenyl Compounds/adverse effects , Cardiovascular Diseases/mortality , Double-Blind Method , Drug Combinations , Female , Hospitalization/statistics & numerical data , Humans , Hypotension/chemically induced , Male , Middle Aged , Myocardial Infarction/complications , Myocardial Infarction/mortality , Proportional Hazards Models , Ramipril/adverse effects , Stroke Volume , Valsartan/adverse effects , Ventricular Dysfunction, Left/etiology
2.
Am Heart J ; 2024 Sep 03.
Article in English | MEDLINE | ID: mdl-39237070

ABSTRACT

BACKGROUND: There is a little evidence regarding long-term safety and efficacy for atrial shunt devices in heart failure (HF). METHODS: The REDUCE LAP-HF I (n=44) and II (n=621) trials (RCT-I and -II) were multicenter, randomized, sham-controlled trials of patients with HF and ejection fraction >40%. Outcome data were analyzed from RCT-I, a mechanistic trial with 5-year follow-up, and RCT-II, a pivotal trial identifying a responder group (n=313) defined by exercise PVR <1.74 WU and no cardiac rhythm management device with 3-year follow-up. RESULTS: At 5 years in RCT I, there were no differences in cardiovascular (CV) mortality, HF events, embolic stroke, or new-onset atrial fibrillation between groups. After 3 years in RCT II, there was no difference in the primary outcome (hierarchical composite of CV mortality, stroke, HF events, and KCCQ) between shunt and sham in the overall trial. Compared to sham, those with responder characteristics in RCT-II had a better outcome with shunt (win ratio 1.6 [95% CI 1.2-2.2], P=0.006; 44% reduction in HF events [shunt 9 vs. control 16 per 100 patient-years], P=0.005; and greater improvement in KCCQ overall summary score [+17.9±20.0 vs. +7.6±20.4], P<0.001), while non-responders had significantly more HF events. Shunt treatment at 3 years was associated with a higher rate of ischemic stroke (3.2% vs. 0%, 95% CI 2% - 6.1%, p=0.032) and lower incidence of worsening kidney dysfunction (10.7% vs. 19.3%, p=0.041). CONCLUSIONS: With up to 5 years of follow up, adverse events were low in patients receiving atrial shunts. In the responder group, atrial shunt treatment was associated with a significantly lower HF event rate and improved KCCQ compared to sham through 3 years of follow-up. CLINICALTRIALS: gov registration: NCT02600234, NCT03088033.

3.
J Card Fail ; 2024 Aug 16.
Article in English | MEDLINE | ID: mdl-39154903

ABSTRACT

Long-term outcomes of patients with advanced heart failure treated with durable left ventricular assist devices (LVADs) have been augmented due to improved durability and hemocompatibility on the backbone of pump engineering enhancements. The incidence of hemocompatibility-related adverse events (pump thrombosis, stroke and non-surgical bleeding events) are device-specific and vary by type of engineered pump. A fully magnetically levitated rotor containing LVAD in concert with use of antithrombotic therapy has successfully overcome an increased risk of thrombosis albeit with only modest reduction in bleeding events. Modifications to antithrombotic strategies have focused on reduced dose vitamin K antagonist use or use of direct oral anticoagulants with demonstration of safety, and progress in reduction of mucosal bleeding episodes with elimination of antiplatelet agents. This review outlines the current landscape of advances in anticoagulation management in LVAD patients, highlighting the need for ongoing research and cautious application of emerging therapies and technologies.

4.
J Card Fail ; 30(7): 929-939, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38522637

ABSTRACT

Heart failure with preserved ejection fraction (HFpEF) is highly prevalent and associated with worse cardiovascular outcomes. The pathophysiology of HFpEF mostly relies on the development of elevated left ventricle filling pressure, diastolic dysfunction, and atrial dilatation and impairment. This dynamic process may eventually lead to the development of functional mitral regurgitation (MR), characterized by mitral annular dilatation and consequent leaflet remodeling, in the context of preserved left ventricular ejection fraction. These observations highlight the possible common pathophysiology of MR and HFpEF. However, less is known about the prevalence and the clinical value of MR in the context of HFpEF. This review aims to provide an overview of the association and interplay between functional MR and HFpEF, discuss the underlying mechanisms that are common to these diseases, and summarize potential targeted pharmacological treatments.


Subject(s)
Heart Failure , Mitral Valve Insufficiency , Stroke Volume , Humans , Mitral Valve Insufficiency/physiopathology , Heart Failure/physiopathology , Heart Failure/therapy , Stroke Volume/physiology , Disease Management , Ventricular Function, Left/physiology
5.
Circulation ; 146(14): 1067-1081, 2022 10 04.
Article in English | MEDLINE | ID: mdl-36082663

ABSTRACT

BACKGROUND: Angiotensin-converting enzyme inhibitors attenuate left ventricular (LV) enlargement after acute myocardial infarction (AMI). Preclinical data suggest similar benefits with combined angiotensin receptor neprilysin inhibition, but human data are conflicting. The PARADISE-MI Echo Study (Prospective ARNI Versus ACE Inhibitor Trial to Determine Superiority in Reducing Heart Failure Events After Myocardial Infarction) tested the effect of sacubitril/valsartan compared with ramipril on LV function and adverse remodeling after high risk-AMI. METHODS: In a prespecified substudy, 544 PARADISE-MI participants were enrolled in the Echo Study to undergo protocol echocardiography at randomization and after 8 months. Patients were randomized within 0.5 to 7 days of presentation with their index AMI to receive a target dose of sacubitril/valsartan 200 mg or ramipril 5 mg twice daily. Echocardiographic measures were performed at a core laboratory by investigators blinded to treatment assignment. The effect of treatment on change in echo measures was assessed with ANCOVA with adjustment for baseline value and enrollment region. The primary end points were change in LV ejection fraction (LVEF) and left atrial volume (LAV), and prespecified secondary end points included changes in LV end-diastolic and end-systolic volumes. RESULTS: Mean age was 64±12 years; 26% were women; mean LVEF was 42±12%; and LAV was 49±17 mL. Of 544 enrolled patients, 457 (84%) had a follow-up echo at 8 months (228 taking sacubitril/valsartan, 229 taking ramipril). There was no significant difference in change in LVEF (P=0.79) or LAV (P =0.62) by treatment group. Patients randomized to sacubitril/valsartan demonstrated less increase in LV end-diastolic volume (P=0.025) and greater decline in LV mass index (P=0.037), increase in tissue Doppler e'lat (P=0.005), decrease in E/e'lat (P=0.045), and decrease in tricuspid regurgitation peak velocity (P=0.024) than patients randomized to ramipril. These differences remained significant after adjustment for differences in baseline characteristics. Baseline LVEF, LV end-diastolic volume, LV end-systolic volume, LV mass index, LAV, and Doppler-based diastolic indices were associated with risk of cardiovascular death or incident heart failure. CONCLUSIONS: Treatment with sacubitril/valsartan compared with ramipril after AMI did not result in changes in LVEF or LAV at 8 months. Patients randomized to sacubitril/valsartan had less LV enlargement and greater improvement in filling pressure. Measures of LV size, systolic function, and diastolic properties were predictive of cardiovascular death and incident heart failure after AMI in this contemporary, well-treated cohort. REGISTRATION: URL: https://www. CLINICALTRIALS: gov; Unique identifier: NCT02924727.


Subject(s)
Heart Failure , Myocardial Infarction , Aged , Aminobutyrates/adverse effects , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Biphenyl Compounds/therapeutic use , Drug Combinations , Echocardiography , Female , Heart Failure/chemically induced , Heart Failure/diagnostic imaging , Heart Failure/drug therapy , Humans , Hypertrophy, Left Ventricular/drug therapy , Male , Middle Aged , Myocardial Infarction/diagnostic imaging , Myocardial Infarction/drug therapy , Neprilysin , Prospective Studies , Ramipril/pharmacology , Ramipril/therapeutic use , Receptors, Angiotensin/therapeutic use , Stroke Volume/physiology , Tetrazoles/adverse effects , Valsartan/therapeutic use
6.
Transpl Int ; 36: 11046, 2023.
Article in English | MEDLINE | ID: mdl-36762268

ABSTRACT

Endomyocardial biopsies are the gold standard for surveillance of graft rejection following heart transplantation, and are assessed by classical histopathology using a limited number of previously stained slices from several biopsies. Synchrotron propagation-based X-ray phase contrast imaging is a non-destructive method to image biological samples without tissue preparation, enabling virtual 2D and 3D histopathology. We aimed to show the feasibility of this method to assess acute cellular rejection and its agreement to classical histopathology. Right ventricular biopsies were sampled from 23 heart transplantation recipients (20 males, mean age 54±14 years) as part of standard follow-up. The clinical diagnosis of potential rejection was made using classical histopathology. One additional study sample was harvested and imaged by X-ray phase contrast imaging, producing 3D datasets with 0.65 µm pixel size, and up to 4,320 images per sample. An experienced pathologist graded both histopathological and X-ray phase contrast images in a blinded fashion. The agreement between methods was assessed by weighted kappa, showing substantial agreement (kappa up to 0.80, p < 0.01) between X-ray phase contrast imaging and classical histopathology. X-ray phase contrast imaging does not require tissue processing, allows thorough analysis of a full myocardial sample and allows identification of acute cellular rejection.


Subject(s)
Heart Transplantation , Male , Humans , Adult , Middle Aged , Aged , Follow-Up Studies , X-Rays , Biopsy , Graft Rejection/diagnostic imaging , Graft Rejection/pathology , Imaging, Three-Dimensional
7.
Heart Surg Forum ; 26(1): E038-E039, 2023 Jan 31.
Article in English | MEDLINE | ID: mdl-36856506

ABSTRACT

A 44-year-old female patient with chemotherapy-induced cardiomyopathy presented with acute cardiogenic shock requiring ECMO support. Multiple failed weaning trials from temporary mechanical circulatory assistance prompted a transition to staged durable biventricular support. Her course was complicated with recurrent RVAD stoppages. The initial event was treated with pump exchange, while for the subsequent RVAD standstill, we employed a device wash-out and reimplantation strategy. A brief period of circulatory arrest was employed to explore the right-sided cardiac chambers using a single-use bronchoscope.


Subject(s)
Dextrocardia , Heart Arrest , Heart-Assist Devices , Humans , Female , Adult , Shock, Cardiogenic
8.
Heart Vessels ; 37(12): 1985-1994, 2022 Dec.
Article in English | MEDLINE | ID: mdl-35737119

ABSTRACT

Aortic regurgitation (AR) following continuous flow left ventricular assist device implantation (cf-LVAD) may adversely impact outcomes. We aimed to assess the incidence and impact of progressive AR after cf-LVAD on prognosis, biomarkers, functional capacity and echocardiographic findings. In an analysis of the PCHF-VAD database encompassing 12 European heart failure centers, patients were dichotomized according to the progression of AR following LVAD implantation. Patients with de-novo AR or AR progression (AR_1) were compared to patients without worsening AR (AR_0). Among 396 patients (mean age 53 ± 12 years, 82% male), 153 (39%) experienced progression of AR over a median of 1.4 years on LVAD support. Before LVAD implantation, AR_1 patients were less frequently diabetic, had lower body mass indices and higher baseline NT-proBNP values. Progressive AR did not adversely impact mortality (26% in both groups, HR 0.91 [95% CI 0.61-1.36]; P = 0.65). No intergroup variability was observed in NT-proBNP values and 6-minute walk test results at index hospitalization discharge and at 6-month follow-up. However, AR_1 patients were more likely to remain in NYHA class III and had worse right ventricular function at 6-month follow-up. Lack of aortic valve opening was related to de-novo or worsening AR (P < 0.001), irrespective of systolic blood pressure (P = 0.67). Patients commonly experience de-novo or worsening AR when exposed to continuous flow of contemporary LVADs. While reducing effective forward flow, worsening AR did not influence survival. However, less complete functional recovery and worse RV performance among AR_1 patients were observed. Lack of aortic valve opening was associated with progressive AR.


Subject(s)
Aortic Valve Insufficiency , Heart Failure , Heart-Assist Devices , Humans , Male , Adult , Middle Aged , Aged , Female , Aortic Valve Insufficiency/diagnosis , Aortic Valve Insufficiency/epidemiology , Aortic Valve Insufficiency/etiology , Heart-Assist Devices/adverse effects , Heart Failure/diagnosis , Heart Failure/therapy , Heart Failure/complications , Echocardiography , Ventricular Function, Right , Retrospective Studies , Treatment Outcome
9.
Circulation ; 141(5): 338-351, 2020 02 04.
Article in English | MEDLINE | ID: mdl-31736337

ABSTRACT

BACKGROUND: Unlike heart failure with reduced ejection fraction, there is no approved treatment for heart failure with preserved ejection fraction, the predominant phenotype in women. Therefore, there is a greater heart failure therapeutic deficit in women compared with men. METHODS: In a prespecified subgroup analysis, we examined outcomes according to sex in the PARAGON-HF trial (Prospective Comparison of ARNI With ARB Global Outcomes in Heart Failure With Preserved Ejection Fraction), which compared sacubitril-valsartan and valsartan in patients with heart failure with preserved ejection fraction. The primary outcome was a composite of first and recurrent hospitalizations for heart failure and death from cardiovascular causes. We also report secondary efficacy and safety outcomes. RESULTS: Overall, 2479 women (51.7%) and 2317 men (48.3%) were randomized. Women were older and had more obesity, less coronary disease, and lower estimated glomerular filtration rate and NT-proBNP (N-terminal pro-B-type natriuretic peptide) levels than men. For the primary outcome, the rate ratio for sacubitril-valsartan versus valsartan was 0.73 (95% CI, 0.59-0.90) in women and 1.03 (95% CI, 0.84-1.25) in men (P interaction = 0.017). The benefit from sacubitril-valsartan was attributable to reduction in heart failure hospitalization. The improvement in New York Heart Association class and renal function with sacubitril-valsartan was similar in women and men, whereas the improvement in Kansas City Cardiomyopathy Questionnaire clinical summary score was less in women than in men. The difference in adverse events between sacubitril-valsartan and valsartan was similar in women and men. CONCLUSIONS: As compared with valsartan, sacubitril-valsartan seemed to reduce the risk of heart failure hospitalization more in women than in men. Whereas the possible sex-related modification of the effect of treatment has several potential explanations, the present study does not provide a definite mechanistic basis for this finding. CLINICAL TRIAL REGISTRATION: https://www.clinicaltrials.gov. Unique identifier: NCT01920711.


Subject(s)
Aminobutyrates/pharmacology , Heart Failure/drug therapy , Sex Factors , Tetrazoles/pharmacology , Valsartan/therapeutic use , Aged , Aged, 80 and over , Aminobutyrates/adverse effects , Angiotensin Receptor Antagonists/therapeutic use , Angiotensin-Converting Enzyme Inhibitors/adverse effects , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Biphenyl Compounds , Drug Combinations , Female , Heart Failure/physiopathology , Humans , Male , Middle Aged , Stroke Volume/drug effects , Tetrazoles/adverse effects , Valsartan/adverse effects
10.
Opt Express ; 29(2): 2049-2064, 2021 Jan 18.
Article in English | MEDLINE | ID: mdl-33726406

ABSTRACT

X-ray phase contrast imaging is a powerful analysis technique for materials science and biomedicine. Here, we report on laboratory grating-based X-ray interferometry employing a microfocus X-ray source and a high Talbot order (35th) asymmetric geometry to achieve high angular sensitivity and high spatial resolution X-ray phase contrast imaging in a compact system (total length <1 m). The detection of very small refractive angles (∼50 nrad) at an interferometer design energy of 19 keV was enabled by combining small period X-ray gratings (1.0, 1.5 and 3.0 µm) and a single-photon counting X-ray detector (75 µm pixel size). The performance of the X-ray interferometer was fully characterized in terms of angular sensitivity and spatial resolution. Finally, the potential of laboratory X-ray phase contrast for biomedical imaging is demonstrated by obtaining high resolution X-ray phase tomographies of a mouse embryo embedded in solid paraffin and a formalin-fixed full-thickness sample of human left ventricle in water with a spatial resolution of 21.5 µm.


Subject(s)
Embryo, Mammalian/diagnostic imaging , Heart Ventricles/diagnostic imaging , Interferometry/instrumentation , Microscopy, Phase-Contrast/instrumentation , Tomography, X-Ray Computed/methods , Animals , Equipment Design , Humans , Image Processing, Computer-Assisted/methods , Mice , Paraffin Embedding
11.
J Cardiovasc Pharmacol ; 75(2): 174-179, 2020 02.
Article in English | MEDLINE | ID: mdl-32023226

ABSTRACT

Clopidogrel is still widely used in acute coronary syndrome despite the development of more potent P2Y12 inhibitors. Previously, we conducted a trial that evaluated serial clopidogrel dose adjustment based on platelet function testing in acute coronary syndrome patients with initial high on-treatment platelet reactivity (HTPR). In this substudy, we performed post hoc analysis of the effect of ABCB1 genetic variants C3435T and G2677T/A on platelet inhibition and outcomes. There were no differences in the proportion of HTPR patients among C3435T carriers and noncarriers in both interventional and control group. G2677T carriers expressed significantly higher proportion of HTPR pattern throughout 12-month follow-up in the control group with no difference in the interventional group. There was no difference in ischemic outcomes between C3435T and G2677T carriers and noncarriers in both groups of patients. The results indicate that ABCB1 genotyping is not useful to guide clopidogrel therapy tailoring to improve high-risk patient management.


Subject(s)
Acute Coronary Syndrome/drug therapy , Blood Platelets/drug effects , Clopidogrel/administration & dosage , Gastrointestinal Absorption/genetics , Pharmacogenomic Variants , Platelet Aggregation Inhibitors/administration & dosage , Platelet Aggregation/drug effects , Purinergic P2Y Receptor Antagonists/administration & dosage , Receptors, Purinergic P2Y12/drug effects , ATP Binding Cassette Transporter, Subfamily B/genetics , ATP Binding Cassette Transporter, Subfamily B/metabolism , Acute Coronary Syndrome/blood , Acute Coronary Syndrome/diagnosis , Aged , Blood Platelets/metabolism , Clopidogrel/metabolism , Drug Monitoring , Female , Humans , Male , Middle Aged , Platelet Aggregation Inhibitors/metabolism , Purinergic P2Y Receptor Antagonists/metabolism , Randomized Controlled Trials as Topic , Receptors, Purinergic P2Y12/blood , Treatment Outcome
12.
Echocardiography ; 37(11): 1926-1935, 2020 11.
Article in English | MEDLINE | ID: mdl-32520404

ABSTRACT

BACKGROUND AND AIM: The main challenge of assessing diastolic function is the balance between clinical utility, in the sense of usability and time-efficiency, and overall applicability, in the sense of precision for the patient under investigation. In this review, we aim to explore the challenges of integrating data in the assessment of diastolic function and discuss the perspectives of a more comprehensive data integration approach. METHODS: Review of traditional and novel approaches regarding data integration in the assessment of diastolic function. RESULTS: Comprehensive data integration can lead to improved understanding of disease phenotypes and better relation of these phenotypes to underlying pathophysiological processes-which may help affirm diagnostic reasoning, guide treatment options, and reduce limitations related to previously unaddressed confounders. The optimal assessment of diastolic function should ideally integrate all relevant clinical information with all available structural and functional whole cardiac cycle echocardiographic data-envisioning a personalized approach to patient care, a high-reaching future goal in medicine. CONCLUSION: Complete data integration seems to be a long-lasting goal, the way forward in diastology, and machine learning seems to be one of the tools suited for the challenge. With perpetual evidence that traditional approaches to complex problems may not the optimal solution, there is room for a steady and cautious, and inherently very exciting paradigm shift toward novel diagnostic tools and workflows to reach a more personalized, comprehensive, and integrated assessment of cardiac function.


Subject(s)
Echocardiography , Diastole , Forecasting , Humans
13.
Monaldi Arch Chest Dis ; 89(2)2019 May 30.
Article in English | MEDLINE | ID: mdl-31315351

ABSTRACT

Lung cancer incidence in heart transplant patients is higher than in general population and correlates with smoking history. EGFR-mutations are more frequent in adenocarcinoma and among non-smoking women but incidence in solid organ transplanted patients is still not known. We present case of a 65-year-old ex-smoker male with history of heart transplantation and EGFR positive metastatic lung adenocarcinoma. At admission he was in a severe clinical condition and treatment with erlotinib was started. Initially he had good clinical and radiologic response to treatment with only grade 1 side effects.  Data about drug interactions between cyclosporine and erlotinib are insufficient but we have to take this interaction into consideration during treatment because both drugs are substrates and inhibitors of CYP34A. In our case erlotinib was safe and well tolerated drug, there were no relevant toxicity, but close monitoring and dose reduction of cyclosporine was needed.


Subject(s)
Adenocarcinoma of Lung/drug therapy , Heart Transplantation/methods , Lung Neoplasms/drug therapy , Adenocarcinoma of Lung/genetics , Aged , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/adverse effects , Cyclosporine/administration & dosage , Dose-Response Relationship, Drug , Drug Interactions , ErbB Receptors/genetics , Erlotinib Hydrochloride/administration & dosage , Erlotinib Hydrochloride/adverse effects , Humans , Immunosuppressive Agents/administration & dosage , Lung Neoplasms/genetics , Male , Mutation
14.
Heart Fail Clin ; 15(2): 147-158, 2019 Apr.
Article in English | MEDLINE | ID: mdl-30832807

ABSTRACT

Despite the rapid development of emerging imaging technologies, left ventricular ejection fraction represents the cornerstone of diagnosis, choice of treatment, and prognosis in heart failure. However, true myocardial function often remains underestimated or overestimated in different conditions underlying this heterogeneous syndrome. Changes in left ventricular size and left ventricular ejection fraction, termed reverse remodeling, are among the main goals of treatment in heart failure, aimed at halting or attenuating disease progression. The lack of effective therapeutic approaches in nearly one-half of the heart failure population highlights the need for integrating novel echocardiographic measures to better understand the underlying pathophysiologic mechanisms.


Subject(s)
Echocardiography/methods , Heart Failure/diagnostic imaging , Heart Ventricles/physiopathology , Ventricular Function, Left/physiology , Ventricular Remodeling/physiology , Animals , Heart Failure/physiopathology , Humans , Prognosis
16.
Croat Med J ; 59(5): 224-231, 2018 Oct 31.
Article in English | MEDLINE | ID: mdl-30394014

ABSTRACT

AIM: To assess the association between renal replacement therapy (RRT) and post-transplant infection incidence. METHODS: This single-center retrospective cohort study included 158 patients who underwent heart transplantation (HTx) in our center from 2008 to 2016, survived beyond the first post-procedural day, and had available microbial data. The patients were dichotomized according to the need for periprocedural RRT. Twenty-seven patients in RRT group had lower preoperative creatinine clearance, greater body mass index, and higher likelihood of having diabetes. Propensity score adjustment was used to account for multiple covariates. The primary outcome measure was the presence of bacteremia in patients with and without the need for RRT. The secondary outcome measures were the presence of microbial isolates from any culture and clinical outcome data. RESULTS: Unadjusted analysis showed that the RRT group had higher incidence of any positive microbial isolate (93% vs 73%; odds ratio [OR] 4.77, 95% confidence interval [CI] 1.01-30.53; P=0.026) and an increased susceptibility to bacteremia (50% vs 22%; OR 3.50, 95% CI 1.28-9.67; P=0.012). Propensity score-adjusted analysis corroborated the between-group difference in positive blood cultures (OR 3.97, 95% CI 1.28-12.32; P=0.017). There was no difference in the incidence of total microbial isolates between the groups (OR 4.55, 95% CI 0.90-23.05; P=0.067). CONCLUSIONS: Patients requiring RRT after HTx had an increased susceptibility to infections via various portals of entry, predominantly due to an increase in blood-borne infections. Understanding the underlying conditions leading to infection-related morbidity is important for infection control and prevention.


Subject(s)
Acute Kidney Injury/therapy , Bacteremia/etiology , Bacteria/isolation & purification , Heart Transplantation/adverse effects , Renal Replacement Therapy , Acute Kidney Injury/etiology , Adolescent , Adult , Aged , Child , Child, Preschool , Female , Humans , Incidence , Male , Middle Aged , Odds Ratio , Postoperative Complications , Propensity Score , Retrospective Studies , Risk Factors , Survival Rate , Transplantation, Homologous
18.
Eur Heart J ; 37(21): 1642-50, 2016 06 01.
Article in English | MEDLINE | ID: mdl-26417058

ABSTRACT

Left ventricular ejection fraction (LVEF) has been the central parameter used for diagnosis and management in patients with heart failure. A good predictor of adverse outcomes in heart failure when below ∼45%, LVEF is less useful as a marker of risk as it approaches normal. As a measure of cardiac function, ejection fraction has several important limitations. Calculated as the stroke volume divided by end-diastolic volume, the estimation of ejection fraction is generally based on geometric assumptions that allow for assessment of volumes based on linear or two-dimensional measurements. Left ventricular ejection fraction is both preload- and afterload-dependent, can change substantially based on loading conditions, is only moderately reproducible, and represents only a single measure of risk in patients with heart failure. Moreover, the relationship between ejection fraction and risk in patients with heart failure is modified by factors such as hypertension, diabetes, and renal function. A more complete evaluation and understanding of left ventricular function in patients with heart failure requires a more comprehensive assessment: we conceptualize an integrative approach that incorporates measures of left and right ventricular function, left ventricular geometry, left atrial size, and valvular function, as well as non-imaging factors (such as clinical parameters and biomarkers), providing a comprehensive and accurate prediction of risk in heart failure.


Subject(s)
Heart Failure/physiopathology , Cardiac Imaging Techniques/methods , Death, Sudden, Cardiac/etiology , Death, Sudden, Cardiac/pathology , Echocardiography/methods , Heart Failure/etiology , Heart Failure/pathology , Heart Valve Diseases/diagnostic imaging , Heart Ventricles/pathology , Humans , Organ Size , Predictive Value of Tests , Prognosis , Risk Factors , Stroke Volume/physiology , Ventricular Dysfunction, Left/physiopathology , Ventricular Dysfunction, Right/etiology , Ventricular Dysfunction, Right/pathology , Ventricular Dysfunction, Right/physiopathology , Ventricular Pressure/physiology
19.
Croat Med J ; 55(6): 562-76, 2014 Dec.
Article in English | MEDLINE | ID: mdl-25559827

ABSTRACT

Development of cardiac allograft vasculopathy represents the major determinant of long-term survival in patients after heart transplantation. Due to graft denervation, these patients seldom present with classic symptoms of angina pectoris, and the first clinical presentations are progressive heart failure or sudden cardiac death. Although coronary angiography remains the routine technique for coronary artery disease detection, it is not sensitive enough for screening purposes. This is especially the case in the first year after transplantation when diffuse and concentric vascular changes can be easily detected only by intravascular ultrasound. The treatment of the established vasculopathy is disappointing, so the primary effort should be directed toward early prevention and diagnosis. Due to diffuse vascular changes, revascularization procedures are restricted only to a relatively small proportion of patients with favorable coronary anatomy. Percutaneous coronary intervention is preferred over surgical revascularization since it leads to better acute results and patient survival. Although there is no proven long-term advantage of drug-eluting stents for the treatment of in-stent restenosis, they are preferred over bare-metal stents. Severe vasculopathy has a poor prognosis and the only definitive treatment is retransplantation. This article reviews the present knowledge on the pathogenesis, diagnosis, treatment, and prognosis of cardiac allograft vasculopathy.


Subject(s)
Coronary Artery Disease/diagnosis , Coronary Artery Disease/therapy , Heart Transplantation , Allografts , Coronary Artery Disease/etiology , Graft Survival , Humans , Prognosis
20.
Croat Med J ; 55(6): 553-61, 2014 Dec.
Article in English | MEDLINE | ID: mdl-25559826

ABSTRACT

Aim. To identify predictors of 3-month mortality after heart transplantation in a Croatian academic center. Methods. A retrospective review of institutional database identified 117 heart transplantations from January 2008 to July 2014. Two children <14 years were excluded from the study. The remaining 115 patients were dichotomized into survivors and non-survivors adjudicated at 3-months postoperatively, and their demographic, clinical, and longitudinal hemodynamic data were analyzed. Results. 3-month survival after heart transplantation was 86%. Non-survivors were older (59±8 vs 50±14 years, P=0.009), more likely to have previous cardiac surgery (44% vs 19%; odds ratio [OR] 3.28, 95% confidence interval [CI] 1.08-9.90; P=0.029), lower body mass index (BMI) (25±4 vs 28±2 kg/m(2), P=0.001), and be diabetics (44% vs 23%; OR 2.57, 95% CI 0.86-7.66; P=0.083). Creatinine clearance was marginally superior among survivors (59=19 vs 48 ± 20 mL/min, P=0.059). Donor age and sex did not affect outcomes. Non-survivors were more likely to have had ischemic cardiomyopathy (69% vs 32%, P=0.010). Postoperative utilization of epinephrine as a second line inotropic agent was a strong predictor of mortality (63% vs 7%; OR 21.91; 95% CI 6.15-78.06; P<0.001). Serum lactate concentrations were consistently higher among non-survivors, with the difference being most pronounced 2 hours after cardiopulmonary bypass (9.8±3.5 vs 5.2±3.2 mmol/L, P<0.001). The donor hearts exhibited inferior early hemodynamics in non-survivors (cardiac index 3.0±1.0 vs 4.0±1.1 L/min/m(2), P=0.001), stroke volume (49±24 vs 59±19 mL, P=0.063), and left and right ventricular stroke work indices (18±8 vs 30±11 g/beat/m(2), P<0.001 and 5±3 vs 7±4 g/beat/m(2), P=0.060, respectively). Non-survivors were more likely to require postoperative re-sternotomy (50% vs 12%; OR 7.25, 95% CI 2.29-22.92; P<0.001), renal replacement therapy (RRT) (69% vs 9%; OR 22.00, 95% CI 6.24-77.54; P<0.001), and mechanical circulatory assistance (MCS) (44% vs 5%; OR 14.62, 95% CI 3.84-55.62; P<0.001). Binary logistic regression revealed recipient age (P=0.024), serum lactates 2 hours after CPB (P=0.007), and epinephrine use on postoperative day 1 (P=0.007) to be independently associated with 3-month mortality. Conclusion. Pretransplant predictors of adverse outcome after heart transplantation were recipient age, lower BMI, ischemic cardiomyopathy, reoperation and diabetes. Postoperative predictors of mortality were inferior donor heart hemodynamics, epinephrine use, and serum lactate concentrations. Non-survivors were more likely to require re-sternotomy, MCS, and RRT.


Subject(s)
Heart Failure/surgery , Heart Transplantation/mortality , Adult , Aged , Body Mass Index , Creatinine/blood , Croatia , Drug Therapy, Combination , Female , Graft Rejection/prevention & control , Humans , Immunosuppressive Agents/therapeutic use , Lactates/blood , Male , Middle Aged , Retrospective Studies , Risk Factors , Survival Rate , Tertiary Care Centers , Treatment Outcome
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