In-hospital outcomes of Infective Endocarditis from 1978 to 2015: analysis through machine-learning techniques

© 2021 The Authors. Published by Elsevier Inc. on behalf of the Canadian Cardiovascular Society. This is an open access article under the CC BY-NC- ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)Background: Early identification of patients with infective endocarditis (IE) at higher risk for in-hospital mortality is essential to guide management and improve prognosis. Methods: A retrospective analysis was conducted of a cohort of patients followed up from 1978 to 2015, classified according to the modified Duke criteria. Clinical parameters, echocardiographic data, and blood cultures were assessed. Techniques of machine learning, such as the classification tree, were used to explain the association between clinical characteristics and in-hospital mortality. Additionally, the log-linear model and graphical random forests (GRaFo) representation were used to assess the degree of dependence among in-hospital outcomes of IE. Results: This study analyzed 653 patients: 449 (69.0%) with definite IE; 204 (31.0%) with possible IE; mean age, 41.3 ± 19.2 years; 420 (64%) men. Mode of IE acquisition: community-acquired (67.6%), nosocomial (17.0%), undetermined (15.4%). Complications occurred in 547 patients (83.7%), the most frequent being heart failure (47.0%), neurologic complications (30.7%), and dialysis-dependent renal failure (6.5%). In-hospital mortality was 36.0%. The classification tree analysis identified subgroups with higher in-hospital mortality: patients with community-acquired IE and peripheral stigmata on admission; and patients with nosocomial IE. The log-linear model showed that surgical treatment was related to higher in-hospital mortality in patients with neurologic complications. Conclusions: The use of a machine-learning model allowed identification of subgroups of patients at higher risk for in-hospital mortality. Peripheral stigmata, nosocomial IE, absence of vegetation, and surgery in the presence of neurologic complications are predictors of fatal outcomes in machine learning-based analysis.info:eu-repo/semantics/publishedVersio

Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis.

Background Host factors and complications have been associated with higher mortality in infective endocarditis (IE). We sought to develop and validate a model of clinical characteristics to predict 6-month mortality in IE. Methods and Results Using a large multinational prospective registry of definite IE (International Collaboration on Endocarditis [ICE]-Prospective Cohort Study [PCS], 2000-2006, n=4049), a model to predict 6-month survival was developed by Cox proportional hazards modeling with inverse probability weighting for surgery treatment and was internally validated by the bootstrapping method. This model was externally validated in an independent prospective registry (ICE-PLUS, 2008-2012, n=1197). The 6-month mortality was 971 of 4049 (24.0%) in the ICE-PCS cohort and 342 of 1197 (28.6%) in the ICE-PLUS cohort. Surgery during the index hospitalization was performed in 48.1% and 54.0% of the cohorts, respectively. In the derivation model, variables related to host factors (age, dialysis), IE characteristics (prosthetic or nosocomial IE, causative organism, left-sided valve vegetation), and IE complications (severe heart failure, stroke, paravalvular complication, and persistent bacteremia) were independently associated with 6-month mortality, and surgery was associated with a lower risk of mortality (Harrell's C statistic 0.715). In the validation model, these variables had similar hazard ratios (Harrell's C statistic 0.682), with a similar, independent benefit of surgery (hazard ratio 0.74, 95% CI 0.62-0.89). A simplified risk model was developed by weight adjustment of these variables. Conclusions Six-month mortality after IE is 25% and is predicted by host factors, IE characteristics, and IE complications. Surgery during the index hospitalization is associated with lower mortality but is performed less frequently in the highest risk patients. A simplified risk model may be used to identify specific risk subgroups in I

DESCRIÇÃO DOS CASOS DE ENDOCARDITE INFECCIOSA EM UM HOSPITAL UNIVERSITÁRIO ENTRE 1978-2021

Introdução: A endocardite infecciosa (EI) continua sendo uma infecção devastadora a despeito de todo progresso em seu diagnóstico e tratamento. Objetivo: Descrição clínica dos pacientes com EI internados em um hospital universitário (HU). Métodos: Estudo retrospectivo de uma série prospectiva de 639 pacientes, admitidos em um HU entre os anos de 1978 e 2021, diagnosticados com EI, classificados como casos definitivos ou possíveis de acordo com os critérios de Duke modificados. Resultados: Foram diagnosticados 708 episódios de EI dentre os 639 pacientes. Desses, 500 foram classificados como definitivos e 208 como possíveis. A idade dos indivíduos variou entre 18 e 93 anos, com a média de 45,5 ± 17,5. Nota-se uma tendência de envelhecimento da população estudada ao longo dos anos - entre 1978 e 1999, média 41,3 ± 16,6 anos e entre 2000 e 2021 de 51,7 ± 17 (p < 0,001). Em 251 (35,5%) dos episódios os pacientes apresentavam comorbidades, sendo as mais comuns doença renal crônica em hemodiálise e diabetes mellitus em 75 (10,6%) e 67 (9,5%) indivíduos respectivamente. Na maior parte dos episódios (412 (58,2%)), os pacientes apresentavam alguma condição cardíaca predisponente ao desenvolvimento de EI. Em 154 (21,8%) desses episódios o paciente era portador de prótese valvar. A principal válvula cardíaca acometida pela EI foi a válvula mitral nativa de forma isolada, em 190 (26,8%) casos. Em seguida, a válvula aórtica nativa de forma isolada - 152 (21,5%) casos, próteses valvares - 118 (16,7%), válvula tricúspide isolada - 66 (9,3%) e o comprometimento combinado de válvula mitral e aórtica em 55 (7,8%) episódios. Dos 416 (58,8%) episódios em que as hemoculturas foram positivas, os microrganismos mais frequentemente isolados foram Staphylococcus aureus (122 (29,3%)), Streptococcus do grupo viridans (99 (23,8%)) e Enterococcus spp. (43 (10.3%)). Em 260 casos (36,7%) não houve detecção/isolamento do microorganismo causador. A maior parte dos episódios foram adquiridos na comunidade 482 (68,1%). Em 230 (32,5%) dos episódios o paciente foi submetido à troca valvar. Em 35,5% dos episódios os pacientes evoluíram para o óbito. Quando analisou-se o desfecho fatal relacionando com o período em que o paciente foi internado, observou-se um aumento significativo dos óbitos nas duas últimas décadas (p = 0,02). Conclusão: A EI é uma infecção grave cuja mortalidade está aumentando. Tal desfecho pode estar associado ao envelhecimento dos pacientes e maior prevalência de comorbidad

Outcomes in patients with fungal endocarditis: A multicenter observational cohort study

Objective: To compare the clinical and epidemiological features, treatments, and outcomes of patients with isolated right-sided and left-sided fungal endocarditis and to determine the risk factors for in-hospital mortality in patients with Candida sp endocarditis. Methods: A retrospective review of all consecutive cases of fungal endocarditis from five hospitals was performed. Clinical features were compared between patients with isolated right-sided and left-sided endocarditis. In the subgroup of fungal endocarditis due to Candida species, binary logistic regression analysis was performed to determine variables related to in-hospital mortality. Results: Seventy-eight patients with fungal endocarditis were studied. Their median age was 50 years; 55% were male and 19 patients (24%) had isolated right-sided endocarditis. Overall, cardiac surgery was performed in 46 patients (59%), and in-hospital mortality was 54%. Compared to patients with left-side fungal endocarditis, patients with isolated right-sided endocarditis had lower mortality (32% vs. 61%; p = 0.025) and were less often submitted to cardiac surgery (37% vs. 66%; p = 0.024). The most frequent etiology was Candida spp (85%). In this subgroup, acute heart failure (odds ratio 5.0; p = 0.027) and exclusive medical treatment (odds ratio 11.1; p = 0.004) were independent predictors of in-hospital death, whereas isolated right-sided endocarditis was related to a lower risk of mortality (odds ratio 0.13; p = 0.023). Conclusions: Patients with isolated right-sided fungal endocarditis have particular clinical and epidemiological features. They were submitted to cardiac surgery less often and had better survival than patients with left-sided fungal endocarditis. Isolated right-sided endocarditis was also a marker of a less harmful illness in the subgroup of Candida sp endocarditis. Keywords: Endocarditis, Fungi, Candid

First reported case of infective endocarditis caused by community-acquired methicillin-resistant Staphylococcus aureus not associated with healthcare contact in Brazil

We report here the first case of endocarditis due to CA-MRSA not associated with healthcare contact in Brazil in Brazil. A previously healthy patient presented with history of endocarditis following a traumatic wound infection. Patient had multiple positive blood cultures within 72 h of admission and met modified Duke's criterion for infective endocarditis. The isolate was typed as Staphylococcal cassette chromosome (SCC) mec type IV and was positive for presence of Panton-Valentine leukocidin (PVL). Increased incidence of CA-MRSA endocarditis is a challenge for the internist to choose the best empirical therapy. Several authors have suggested an empirical therapy with both a beta-lactam and an anti-MRSA agent for serious S. aureus infections. Our patient was treated with Vancomycin and made complete recovery in 3 months

Beta-Hemolytic Streptococcal Infective Endocarditis: Characteristics and Outcomes From a Large, Multinational Cohort

International audienceAbstract Background Beta-hemolytic streptococci (BHS) are an uncommon cause of infective endocarditis (IE). The aim of this study was to describe the clinical features and outcomes of patients with BHS IE in a large multinational cohort and compare them with patients with viridans streptococcal IE. Methods The International Collaboration on Endocarditis Prospective Cohort Study (ICE-PCS) is a large multinational database that recruited patients with IE prospectively using a standardized data set. Sixty-four sites in 28 countries reported patients prospectively using a standard case report form developed by ICE collaborators. Results Among 1336 definite cases of streptococcal IE, 823 were caused by VGS and 147 by BHS. Patients with BHS IE had a lower prevalence of native valve (P &lt; .005) and congenital heart disease predisposition (P = .002), but higher prevalence of implantable cardiac device predisposition (P &lt; .005). Clinically, they were more likely to present acutely (P &lt; .005) and with fever (P = .024). BHS IE was more likely to be complicated by stroke and other systemic emboli (P &lt; .005). The overall in-hospital mortality of BHS IE was significantly higher than that of VGS IE (P = .001). In univariate analysis, variables associated with in-hospital mortality for BHS IE were age (odds ratio [OR], 1.044; P = .004), prosthetic valve IE (OR, 3.029; P = .022), congestive heart failure (OR, 2.513; P = .034), and stroke (OR, 3.198; P = .009). Conclusions BHS IE is characterized by an acute presentation and higher rate of stroke, systemic emboli, and in-hospital mortality than VGS IE. Implantable cardiac devices as a predisposing factor were more often found in BHS IE compared with VGS IE

Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis.

Background Host factors and complications have been associated with higher mortality in infective endocarditis (IE). We sought to develop and validate a model of clinical characteristics to predict 6-month mortality in IE. Methods and Results Using a large multinational prospective registry of definite IE (International Collaboration on Endocarditis [ICE]-Prospective Cohort Study [PCS], 2000-2006, n=4049), a model to predict 6-month survival was developed by Cox proportional hazards modeling with inverse probability weighting for surgery treatment and was internally validated by the bootstrapping method. This model was externally validated in an independent prospective registry (ICE-PLUS, 2008-2012, n=1197). The 6-month mortality was 971 of 4049 (24.0%) in the ICE-PCS cohort and 342 of 1197 (28.6%) in the ICE-PLUS cohort. Surgery during the index hospitalization was performed in 48.1% and 54.0% of the cohorts, respectively. In the derivation model, variables related to host factors (age, dialysis), IE characteristics (prosthetic or nosocomial IE, causative organism, left-sided valve vegetation), and IE complications (severe heart failure, stroke, paravalvular complication, and persistent bacteremia) were independently associated with 6-month mortality, and surgery was associated with a lower risk of mortality (Harrell's C statistic 0.715). In the validation model, these variables had similar hazard ratios (Harrell's C statistic 0.682), with a similar, independent benefit of surgery (hazard ratio 0.74, 95% CI 0.62-0.89). A simplified risk model was developed by weight adjustment of these variables. Conclusions Six-month mortality after IE is 25% and is predicted by host factors, IE characteristics, and IE complications. Surgery during the index hospitalization is associated with lower mortality but is performed less frequently in the highest risk patients. A simplified risk model may be used to identify specific risk subgroups in I

Epidemiological and clinical profile of infective endocarditis at a Brazilian tertiary care center: an eight-year prospective study

INTRODUCTION: Infective endocarditis (IE) is a systemic infectious disease requiring a multidisciplinary team for treatment. This study presents the epidemiological and clinical data of 73 cases of IE in Rio de Janeiro, Brazil. METHODS This observational prospective cohort study of endocarditis patients during an eight-year study period described 73 episodes of IE in 70 patients (three had IE twice). Community-associated (CAIE) and healthcare-acquired infective endocarditis (HAIE) were diagnosed according to the modified Duke criteria. The collected data included demographic, epidemiologic, and clinical characteristics, including results of blood cultures, echocardiographic findings, surgical interventions, and outcome. RESULTS: Analysis of data from the eight-year study period and 73 cases (70 patients) of IE showed a mean age of 46 years (SD=2.5 years; 1-84 years) and that 65.7% were male patients. The prevalence of CAIE and HAIE was 32.9% and 67.1%, respectively. Staphylococcus aureus (30.1%), Enterococcus spp. (19.1%), and Streptococcus spp. (15.0%) were the prevalent microorganisms. The relevant signals and symptoms were fever (97.2%; mean 38.6 + 0.05°C) and heart murmur (87.6%). Vegetations were observed in the mitral (41.1%) and aortic (27.4%) valves. The mortality rate of the cases was 47.9%. CONCLUSIONS: In multivariate analysis, chronic renal failure (relative risk [RR]= 1.60; 95% confidence interval [CI] 1.01-2.55), septic shock (RR= 2.19; 95% CI 1.499-3.22), and age over 60 years (RR= 2.28; 95% CI 1.44-3.59) were indirectly associated with in-hospital mortality. The best prognosis was related to the performance of cardiovascular surgery (hazard ratio [HR]= 0.51; 95% CI 0.26-0.99)

The 2023 Duke-International Society for Cardiovascular Infectious Diseases Criteria for Infective Endocarditis: Updating the Modified Duke Criteria

: The microbiology, epidemiology, diagnostics, and treatment of infective endocarditis (IE) have changed significantly since the Duke Criteria were published in 1994 and modified in 2000. The International Society for Cardiovascular Infectious Diseases (ISCVID) convened a multidisciplinary Working Group to update the diagnostic criteria for IE. The resulting 2023 Duke-ISCVID IE Criteria propose significant changes, including new microbiology diagnostics (enzyme immunoassay for Bartonella species, polymerase chain reaction, amplicon/metagenomic sequencing, in situ hybridization), imaging (positron emission computed tomography with 18F-fluorodeoxyglucose, cardiac computed tomography), and inclusion of intraoperative inspection as a new Major Clinical Criterion. The list of "typical" microorganisms causing IE was expanded and includes pathogens to be considered as typical only in the presence of intracardiac prostheses. The requirements for timing and separate venipunctures for blood cultures were removed. Last, additional predisposing conditions (transcatheter valve implants, endovascular cardiac implantable electronic devices, prior IE) were clarified. These diagnostic criteria should be updated periodically by making the Duke-ISCVID Criteria available online as a "Living Document.