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1.
Int. j. cardiovasc. sci. (Impr.) ; 37(suppl.1): 17-17, abr. 2024.
Article in Portuguese | CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1538231

ABSTRACT

INTRODUÇÃO: A amiloidose transtiretina (ATTR) é uma doença multissistêmica causada pela deposição de proteína fibrilar em órgãos e tecidos. Os genótipos e fenótipos da ATTR são altamente heterogêneos. MÉTODOS: Apresentamos dados sobre sinais e sintomas físicos, avaliações cardíacas e neurológicas, e genética em pacientes incluídos no Registro de Amiloidose Cardíaca Transtiretina no Estado de São Paulo (REACT-SP), Brasil. RESULTADOS: Foram incluídos 644 pacientes, sendo 505 com a forma variante (ATTRv) e 139 com a forma selvagem (ATTRwt). Dezesseis mutações diferentes foram detectadas, sendo as mais comuns Val50Met (48,3%) e V142Ile (40,8%). No geral, mais da metade dos pacientes apresentou envolvimento cardíaco, e a diferença nessa proporção entre os grupos ATTRv e ATTRwt foi significativa (43,9 vs. 89,9%; p<0,001). O fenótipo neurológico também diferiu entre ATTRv e ATTRwt (56,8 vs. 31,7%; p<0,001). O fenótipo misto foi encontrado em 25,6% da população, sem diferença significativa entre as formas de amiloidose. Um grupo de pacientes permaneceu assintomático (10,4%), com uma proporção menor de pacientes assintomáticos no grupo ATTRwt. CONCLUSÕES: Este estudo detalha o espectro clínico e genético de pacientes com ATTR em São Paulo, Brasil. Esta análise preliminar destaca a considerável heterogeneidade fenotípica das manifestações neurológicas e cardíacas em pacientes com ATTR variante e ATTR do tipo selvagem.


Subject(s)
Prealbumin , Amyloidosis, Familial , Signs and Symptoms , Genetic Profile
2.
Curr Cardiol Rep ; 26(6): 635-641, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38656586

ABSTRACT

PURPOSE OF REVIEW: More than a century since its discovery, the pathogenesis of Chagas heart disease (CHD) remains incompletely understood. The role of derangements in the autonomic control of the heart in triggering malignant arrhythmia before the appearance of contractile ventricular impairment was reviewed. RECENT FINDINGS: Although previous investigations had demonstrated the anatomical and functional consequences of parasympathetic dysautonomia upon the heart rate control, only recently, coronary microvascular disturbances and sympathetic denervation at the ventricular level have been reported in patients and experimental models of CHD, exploring with nuclear medicine methods their impact on the progression of myocardial dysfunction and cardiac arrhythmias. More important than parasympathetic impaired sinus node regulation, recent evidence indicates that myocardial sympathetic denervation associated with coronary microvascular derangements is causally related to myocardial injury and arrhythmia in CHD. Additionally, 123I-MIBG imaging is a promising tool for risk stratification of progression of ventricular dysfunction and sudden death.


Subject(s)
Chagas Cardiomyopathy , Sympathectomy , Humans , Sympathectomy/methods , Chagas Cardiomyopathy/physiopathology , Chagas Cardiomyopathy/surgery , Chagas Cardiomyopathy/complications , Arrhythmias, Cardiac/etiology , Arrhythmias, Cardiac/physiopathology , Heart/innervation , Heart/diagnostic imaging , 3-Iodobenzylguanidine , Sympathetic Nervous System/physiopathology
3.
PLos ONE ; 19(2): e0278738, fev.2024. ilus, tab
Article in English | CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1531135

ABSTRACT

OBJECTIVES: To identify and describe the profile of potential transthyretin cardiac amyloidosis (ATTR-CM) cases in the Brazilian public health system (SUS), using a predictive machine learning (ML) model. METHODS: This was a retrospective descriptive database study that aimed to estimate the frequency of potential ATTR-CM cases in the Brazilian public health system using a supervised ML model, from January 2015 to December 2021. To build the model, a list of ICD-10 codes and procedures potentially related with ATTR-CM was created based on literature review and validated by experts. RESULTS: From 2015 to 2021, the ML model classified 262 hereditary ATTR-CM (hATTR-CM) and 1,581 wild-type ATTR-CM (wtATTR-CM) potential cases. Overall, the median age of hATTR-CM and wtATTR-CM patients was 66.8 and 59.9 years, respectively. The ICD-10 codes most presented as hATTR-CM and wtATTR-CM were related to heart failure and arrythmias. Regarding the therapeutic itinerary, 13% and 5% of hATTR-CM and wtATTR-CM received treatment with tafamidis meglumine, respectively, while 0% and 29% of hATTR-CM and wtATTR-CM were referred to heart transplant. CONCLUSION: Our findings may be useful to support the development of health guidelines and policies to improve diagnosis, treatment, and to cover unmet medical needs of patients with ATTR-CM in Brazil.


Subject(s)
Humans , Amyloid Neuropathies , Cardiomyopathies , Brazil/epidemiology , Prealbumin , Public Health , Machine Learning , Amyloidosis
4.
PLoS One ; 19(2): e0278738, 2024.
Article in English | MEDLINE | ID: mdl-38359001

ABSTRACT

OBJECTIVES: To identify and describe the profile of potential transthyretin cardiac amyloidosis (ATTR-CM) cases in the Brazilian public health system (SUS), using a predictive machine learning (ML) model. METHODS: This was a retrospective descriptive database study that aimed to estimate the frequency of potential ATTR-CM cases in the Brazilian public health system using a supervised ML model, from January 2015 to December 2021. To build the model, a list of ICD-10 codes and procedures potentially related with ATTR-CM was created based on literature review and validated by experts. RESULTS: From 2015 to 2021, the ML model classified 262 hereditary ATTR-CM (hATTR-CM) and 1,581 wild-type ATTR-CM (wtATTR-CM) potential cases. Overall, the median age of hATTR-CM and wtATTR-CM patients was 66.8 and 59.9 years, respectively. The ICD-10 codes most presented as hATTR-CM and wtATTR-CM were related to heart failure and arrythmias. Regarding the therapeutic itinerary, 13% and 5% of hATTR-CM and wtATTR-CM received treatment with tafamidis meglumine, respectively, while 0% and 29% of hATTR-CM and wtATTR-CM were referred to heart transplant. CONCLUSION: Our findings may be useful to support the development of health guidelines and policies to improve diagnosis, treatment, and to cover unmet medical needs of patients with ATTR-CM in Brazil.


Subject(s)
Amyloid Neuropathies, Familial , Amyloidosis , Cardiomyopathies , Humans , Brazil/epidemiology , Prealbumin , Public Health , Retrospective Studies , Machine Learning , Cardiomyopathies/diagnosis , Cardiomyopathies/epidemiology , Amyloid Neuropathies, Familial/diagnosis , Amyloid Neuropathies, Familial/epidemiology
5.
Value health ; 26(12 suppl)Dec, 2023. ilus
Article in English | CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1537481

ABSTRACT

INTRODUCTION: Amyloidosis is a group of protein misfolding disorders leading to organ damage due to insoluble amyloid fibril deposits • The two primary types of cardiac amyloidosis are light-chain amyloid (AL) and transthyretin (TTR) cardiac amyloidosis • TTR amyloidosis can be hereditary (hATTR) or age-related (wtATTR). It is an often-overlooked cause of heart failure in older adults • Recent studies reveal its prevalence in various patient groups: up to 13% in HFpEF, 16% in aortic stenosis patients undergoing valve replacement, 7-8% in carpal tunnel release surgery, and 17% in some other contexts • ATTR-CM is significant in the context of cardiovascular diseases, a leading global cause of death. OBJECTIVE: This study aimed to identify and describe the profile of potential transthyretin cardiac amyloidosis (ATTR-CM) cases in the Brazilian public health system (SUS), using a predictive machine learning (ML) model. MATERIALS AND METHODS: This was a retrospective descriptive database study that aimed to estimate the frequency of potential ATTR-CM cases in the Brazilian public health system (Figure 1) using a supervised machine learning (Figure 2) model, with data extracted from DATASUS outpatient and inpatient datasets from January 2015 to December 2021 • To build the model, a list of ICD-10 codes and procedures potentially related with ATTR-CM was created based on literature review and validated by experts (Figure 3). RESULTS: From 2015 to 2021, the ML model classified 262 hATTR-CM (213 reference hATTR-CIM and 49 hATTR-CM-like) and 1,581 wtATTR-CM (203 reference wtATTR-CM and 1,378 wtATTR-CM-like). Overall, the median age of hATTR-CM and wtATTR-CM patients was 66.8 and 59.9 years, respectively • The ICD-10 codes most presented as hATTR-CM and wtATTR-CM were related to heart failure and arrythmias, with similar procedures performed (Figure 4). Regarding healthcare utilization, hATTR-CM and hATTR-CM-like had similar profiles on proportion of patients with outpatient visits (hATTR-CM 98.0% vs. 92.0% hATTR-CM-like) and different profile related to proportion of hospitalized patients (hATTR-CM 94.4% vs. 32.7% hATTR-CM-like) (Figure 5) • In wtATTR-CM groups, although both proportions on outpatient visits and hospitalizations were similar, the length of stay (LOS) on hospitalizations was different in wtATTR-CM-like (wtATTR-CM median LOS 5.0 (IQR:2.0 - 10.0] vs. median LOS 7.0 [IQR:3.0 - 14.0]). CONCLUSIONS: Our findings may be useful to support decreasing the uncertainties on ATTR-CM population size in Health Technology Assessment appraisals and in the development of healthcare guidelines and policies to address patients' unmet needs and to improve early diagnosis and access to treatment for patients with ATTR-CM in Brazil This study puts a spotlight on the ATTR-CM underdiagnosis in Brazil using a machine learning approach, which can be used as an important tool to support diagnosis improvement.


Subject(s)
Humans , Prealbumin , Amyloidosis, Familial
6.
J. bras. econ. saúde (Impr.) ; 15(3): 190-199, Dezembro/2023.
Article in English, Portuguese | LILACS, ECOS | ID: biblio-1553993

ABSTRACT

Objective: To generate data on the costs associated with the diagnosis and treatment of obstructive ypertrophic cardiomyopathy (HCM) from the perspective of the private health system in Brazil. Methods: A modified Delphi panel including seven different specialists (three clinical cardiologists with experience in obstructive HCM, two hemodynamicists with experience in septal ablation and two cardiac surgeons with expertise in myectomy), from two Brazilian states (São Paulo and Pernambuco), was conducted between August and November 2022. Two rounds of questions about the use of healthcare resources according to the functional class (NYHA I-IV) and a panel in a virtual platform were conducted to obtain the final consensus. Micro-costing defined costs and unit values were determined based on official price lists. Results: The total diagnosis cost per patient was estimated at BRL 11,486.81. The obstructive HCM management costs analysis showed average annual costs per patient of BRL 17,026.74, BRL 19,401.46, BRL 73,310.07, and BRL 94,885.75 for the functional classes NYHA I, NYHA II, NYHA III, and NYHA IV, respectively. The average costs per patient related to procedures in a year were BRL 12,698.53, BRL 13,462.30, BRL 58,841.67, and BRL 75,595.90 for the functional classes NYHA I, II, III, and IV, respectively. Conclusions: The annual costs of HCM management increased according to the functional class, highlighting the need for safe and effective strategies to improve patient's NYHA functional class while promoting a decrease in the need for invasive therapies.


Objetivo: Gerar dados acerca dos custos associados ao diagnóstico e tratamento da cardiomiopatia hipertrófica (CMH) obstrutiva, sob a perspectiva do sistema de saúde privado no Brasil. Métodos: Um painel Delphi modificado incluindo sete especialistas (três cardiologistas clínicos com experiência em CMH obstrutiva, dois hemodinamicistas com experiência em ablação de septo e dois cirurgiões cardíacos com experiência em miectomia) de dois estados brasileiros (São Paulo e Pernambuco) foi conduzido entre agosto e novembro de 2022. Foram realizadas duas rodadas de perguntas acerca da utilização de recursos de acordo com a classe funcional (NYHA I-IV) e uma reunião virtual para obtenção do consenso final. Os custos foram definidos por meio de microcusteio, e os valores unitários foram definidos com base em listas de preço oficiais. Resultados: O custo total do diagnóstico por paciente foi estimado em R$ 11.486,81. A análise de custos de manejo da CMH obstrutiva mostrou custos médios anuais por paciente de R$ 17.026,74, R$ 19.401,46, R$ 73.310,07 e R$ 94.885,75 para as classes funcionais NYHA I, NYHA II, NYHA III e NYHA IV, respectivamente. Os custos médios por paciente relacionados a procedimentos em um ano foram de R$ 12.698,53, R$ 13.462,30, R$ 58.841,67 e R$ 75.595,90 para as classes NYHA I, II, III e IV, respectivamente. Conclusões: Os custos anuais com o manejo da CMH aumentam de acordo com a classe funcional, destacando a necessidade de estratégias seguras e eficazes capazes de melhorar a classe funcional NYHA do paciente, ao mesmo tempo que promove diminuição da necessidade de terapias invasivas.


Subject(s)
Cardiomyopathy, Hypertrophic , Delphi Technique , Costs and Cost Analysis , Supplemental Health
7.
J Card Fail ; 2023 Aug 28.
Article in English | MEDLINE | ID: mdl-37648061

ABSTRACT

BACKGROUND: Heart failure (HF), a common cause of hospitalization, is associated with poor short-term clinical outcomes. Little is known about the long-term prognoses of patients with HF in Latin America. METHODS: BREATHE was the first nationwide prospective observational study in Brazil that included patients hospitalized due to acute heart failure (HF). Patients were included during 2 time periods: February 2011-December 2012 and June 2016-July 2018 SUGGESTION FOR REPHRASING: In-hospital management, 12-month clinical outcomes and adherence to evidence-based therapies were evaluated. RESULTS: A total of 3013 patients were enrolled at 71 centers in Brazil. At hospital admission, 83.8% had clear signs of pulmonary congestion. The main cause of decompensation was poor adherence to HF medications (27.8%). Among patients with reduced ejection fraction, concomitant use of beta-blockers, renin-angiotensin-aldosterone inhibitors and spironolactone decreased from 44.5% at hospital discharge to 35.2% at 3 months. The cumulative incidence of mortality at 12 months was 27.7%, with 24.3% readmission at 90 days and 44.4% at 12 months. CONCLUSIONS: In this large national prospective registry of patients hospitalized with acute HF, rates of mortality and readmission were higher than those reported globally. Poor adherence to evidence-based therapies was common at hospital discharge and at 12 months of follow-up.

8.
J. card. fail ; ago.2023. graf
Article in English | CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1509813

ABSTRACT

BACKGROUND: Heart failure (HF), a common cause of hospitalization, is associated with poor short-term clinical outcomes. Little is known about the long-term prognosis of patients with HF in Latin America. METHODS: BREATHE was the first nationwide prospective observational study in Brazil that included patients hospitalized due to acute HF. Patients were included during 2 time periods: February 2011-December 2012 and June 2016-July 2018. In-hospital management and 12-month clinical outcomes were assessed, and adherence to evidence-based therapies was evaluated. RESULTS: A total of 3013 patients were enrolled at 71 centers in Brazil. At hospital admission, 83.8% had clear signs of pulmonary congestion. The main cause of decompensation was poor adherence to HF medications (27.8%). Among patients with reduced ejection fraction, concomitant use of beta-blockers, renin-angiotensin-aldosterone inhibitors, and spironolactone numerical decreased from 44.5% at hospital discharge to 35.2% at 3 months. The cumulative incidence of mortality at 12 months was 27.7%, with 24.3% readmission at 90 days and 44.4% at 12 months. CONCLUSIONS: In this large national prospective registry of patients hospitalized with acute HF, rates of mortality and readmission were higher than those reported globally. Poor adherence to evidence-based therapies was common at hospital discharge and 12 months of follow-up.


Subject(s)
Prognosis
9.
Expert Rev Cardiovasc Ther ; 21(6): 379-387, 2023 Jun.
Article in English | MEDLINE | ID: mdl-37198947

ABSTRACT

INTRODUCTION: Myocardial ischemia is common in patients with chronic Chagas cardiomyopathy (CCC), but only recently clinical and experimental studies highlighted the involvement of this abnormality as contributing to the progression of myocardial damage. AREAS COVERED: Despite the absence of obstructive epicardial coronary artery disease at angiography, and limited evidence of abnormal flow regulation at the macrovascular level, remarkable functional and structural microvascular abnormalities are consistently reported by independent investigations of CCC. These derangements occur early and contribute to myocardial dysfunction. Recent research focused on reversing microvascular dysfunction as a target to positively impact the course of CCC. We conducted an extensive review of the scientific literature, aiming to summarize the role of coronary dysfunction causing myocardial ischemia in CCC, with a focus on implications for clinical management of individuals affected by this disease. EXPERT OPINION: Preclinical studies showed a clear correlation between perfusion defects and inflammation in viable but impaired dysfunctional myocardium. These findings provided further insight into the CCC complex pathophysiology and support the role of very few recent therapeutic interventions aiming to relieve myocardial ischemia. Further research is warranted to assess the efficacy of new interventions addressing reversal of microvascular ischemia and inflammation modulation and halting ventricular dysfunction progression in CCC.


Subject(s)
Cardiomyopathies , Chagas Cardiomyopathy , Chagas Disease , Coronary Artery Disease , Myocardial Ischemia , Humans , Myocardial Ischemia/etiology , Chagas Disease/complications , Inflammation , Coronary Vessels
10.
J Nucl Cardiol ; 30(6): 2327-2337, 2023 12.
Article in English | MEDLINE | ID: mdl-37165114

ABSTRACT

BACKGROUND: Myocardial perfusion defect (MPD) is common in chronic Chagas cardiomyopathy (CCC) and is associated with inflammation and development of left ventricular systolic dysfunction. We tested the hypothesis that pentoxifylline (PTX) could reduce inflammation and prevent the development of MPD in a model of CCC in hamsters. METHODS AND RESULTS: We investigated with echocardiogram and rest myocardial perfusion scintigraphy at baseline (6-months after T. cruzi infection/saline) and post-treatment (after additional 2-months of PTX/saline administration), female Syrian hamsters assigned to 3 groups: T. cruzi-infected animals treated with PTX (CH + PTX) or saline (CH + SLN); and uninfected control animals (CO). At the baseline, all groups showed similar left ventricular ejection fraction (LVEF) and MPD areas. At post-treatment evaluation, there was a significant increase of MPD in CH + SLN group (0.8 ± 1.6 to 9.4 ± 9.7%), but not in CH + PTX (1.9 ± 3.0% to 2.7 ± 2.7%) that exhibited MPD area similar to CO (0.0 ± 0.0% to 0.0 ± 0.0%). The LVEF decreased in both infected groups. Histological analysis showed a reduced inflammatory infiltrate in CH + PTX group (395.7 ± 88.3 cell/mm2), as compared to CH + SLN (515.1 ± 133.0 cell/mm2), but larger than CO (193.0 ± 25.7 cell/mm2). The fibrosis and TNF-α expression was higher in both infected groups. CONCLUSIONS: The prolonged use of PTX is associated with positive effects, including prevention of MPD development and reduction of inflammation in the chronic hamster model of CCC.


Subject(s)
Chagas Cardiomyopathy , Chagas Disease , Pentoxifylline , Cricetinae , Animals , Female , Chagas Cardiomyopathy/diagnostic imaging , Pentoxifylline/pharmacology , Pentoxifylline/therapeutic use , Stroke Volume , Ventricular Function, Left , Tomography, X-Ray Computed , Inflammation , Perfusion
11.
Arq Bras Cardiol ; 119(1): 143-211, 2022 07.
Article in English, Portuguese | MEDLINE | ID: mdl-35830116
13.
Arq. bras. cardiol ; 119(1): 143-211, abr. 2022. graf, ilus, tab
Article in Portuguese | LILACS, CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1381764
14.
J Nucl Cardiol ; 29(6): 3166-3176, 2022 12.
Article in English | MEDLINE | ID: mdl-34981413

ABSTRACT

BACKGROUND: Regional myocardial sympathetic denervation is a conspicuous and early disorder in patients with chronic Chagas' cardiomyopathy (CCC), potentially associated to the progression of myocardial dysfunction OBJECTIVE: To evaluate in a longitudinal study the association between the presence and the progression of regional myocardial sympathetic denervation with the deterioration of global and segmental left ventricular dysfunction in CCC. METHODS: 18 patients with CCC were submitted at initial evaluation and after 5.5 years to rest myocardial scintigraphy with 123Iodo-metaiodobenzylguanidine and 99mTc-sestamibi and to two-dimensional echocardiography to assess myocardial sympathetic denervation, extent of fibrosis, and the left ventricular ejection fraction (LVEF) and wall motion abnormalities. RESULTS: In the follow-up evaluation, compared to the initial one, we observed a significant decrease in LVEF (56 ± 11 to 49% ± 12; P = .01) and increased summed defects scores in the myocardial innervation scintigraphy (15 ± 10 to 20 ± 9; P < .01). The presence of regional myocardial sympathetic denervation in ventricular regions of viable non-fibrotic myocardium presented an odds ratio of 4.25 for the development of new wall motion abnormalities (P = .001). CONCLUSION: Regional and global myocardial sympathetic denervation is a progressive derangement in CCC. In addition, the regional denervation is topographically associated with areas of future development of regional systolic dysfunction in patients with CCC.


Subject(s)
Chagas Cardiomyopathy , Chagas Disease , Ventricular Dysfunction, Left , Humans , Chagas Cardiomyopathy/diagnostic imaging , Chagas Cardiomyopathy/complications , Stroke Volume , Longitudinal Studies , Ventricular Function, Left , Myocardium , Sympathectomy , Chagas Disease/complications
15.
ABC Heart Fail Cardiomyop ; 1(2): 86-89, Sept. 2021. tab
Article in English, Portuguese | CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1401854

ABSTRACT

BACKGROUND: Amyloidosis is a systemic disease that involves multiple organs, characterized by the deposition of amyloid fibrils. Knowledge regarding the epidemiological, clinical, and genetic profile of the population affected by amyloidosis throughout the country is of fundamental importance for establishing diagnostic and therapeutic strategies. OBJECTIVE: To evaluate the epidemiological, clinical, laboratory, imaging, and treatment variables of patients with TTR cardiac amyloidosis. MATERIALS AND METHODS: A multicenter, retrospective, prospective, and observational study based on collection of data on the natural history of patients with TTR amyloidosis, followed in the state of São Paulo. RESULTS: To make it possible to map the regional distribution of the disease, increasing knowledge about the disease among clinicians and specialists in different areas. To evaluate patients with hereditary and wild-type TTR amyloidosis, in addition to following individuals with positive genotype and negative phenotype.


FUNDAMENTO: A amiloidose é uma doença sistêmica com envolvimento de diversos órgãos caracterizada pela deposição de fibrilas amiloides. O conhecimento do perfil epidemiológico, clínico e genético da população acometida por amiloidose no país é de fundamental importância em estratégias para estabelecer o diagnóstico bem como as estratégias terapêuticas. OBJETIVO: Avaliar as variáveis epidemiológicas, clínicas, laboratoriais, de imagem e tratamento dos pacientes com amiloidose cardíaca por transtirretina (TTR). MATERIAL E MÉTODOS: Estudo multicêntrico, retrospectivo, prospectivo e observacional baseado na coleta de dados da história natural dos pacientes com amiloidose TTR seguidos no estado de São Paulo. RESULTADOS: Permitir um mapa da distribuição regional da doença, aumentando o conhecimento da doença entre clínicos e especialistas nas diversas especialidades. Avaliar pacientes com amiloidose por TTR formas familiar e selvagem além de acompanhar indivíduos com genótipo positivo e fenótipo negativo. CONCLUSÃO: As informações coletadas poderão evidenciar uma maior conscientização da doença, criação de novos fluxogramas diagnósticos e de tratamento com impacto direto no conhecimento da história natural da doença e prognóstico dos pacientes.


Subject(s)
Heart Failure , Amyloidosis , Hypertrophy, Left Ventricular
17.
Article in English | MEDLINE | ID: mdl-34378764

ABSTRACT

Chagas disease (CD) has been changing from an endemic Latino-American disease to a condition found outside endemic regions, due to migratory movements. Although often subclinical, its acute phase can be lethal. This study aimed to assess survival during the acute phase of CD and its relationship with ventricular function in an experimental model. To this end, 30 Syrian hamsters were inoculated with Trypanosoma cruzi (IG) and other 15 animals received saline solution (CG). Groups were monitored daily and submitted to echocardiography in two moments: before the challenge and 15 days post-infection. Left ventricular ejection fraction (LVEF) and global longitudinal myocardial strain (GLS) of the LV were measured. The IG was divided into groups of animals with and without clinical signs of disease. ANOVA for mixed models was used to compare ventricular function parameters. Survival analysis was studied using Kaplan-Meier curves and the log-rank test. The follow-up lasted 60 days. LVEF in IG was reduced through time (53.80 to 43.55%) compared to CG (57.86 to 59.73%) (p=0.002). There was also a reduction of GLS (-18.97% to -12.44%) in the IG compared to CG (p=0.012). Twelve animals from IG died compared to one animal from CG. Eleven out of the 12 animals from the IG group died before presenting with clinical signs of infection. Survival was reduced in the IG compared to CG over time (p=0.02). The reduced survival during the acute phase of this experimental model of Chagas disease was related to the significant reduction of LV function. The mortality rate in the IG was higher in the group presenting with clinical signs of infection.


Subject(s)
Chagas Disease , Ventricular Dysfunction, Left , Animals , Cricetinae , Models, Animal , Prospective Studies , Stroke Volume , Ventricular Function, Left
18.
Arq Bras Cardiol ; 116(6): 1174-1212, 2021 06.
Article in English, Portuguese | MEDLINE | ID: mdl-34133608
19.
Arq. bras. cardiol ; 116(6): 1174-1212, Jun. 2021. graf, ilus, tab
Article in Portuguese | CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1255221

Subject(s)
Guideline , Heart Failure
20.
Arq Bras Cardiol ; 116(4): 736-741, 2021 04.
Article in English, Portuguese | MEDLINE | ID: mdl-33886720

ABSTRACT

BACKGROUND: The development of a new class of medications that are highly capable of reducing LDL-cholesterol renewed the interest in the characterization of familial hypercholesterolemia patients. Nevertheless, little is known about the lipid profile of patients in tertiary healthcare centers in Brazil in order to better estimate the real occurrence of familial hypercholesterolemia, with initial suspect of LDL-cholesterol levels above 190 mg/d/L. OBJECTIVES: This study evaluated the lipid profile (total cholesterol and LDL-cholesterol) in ambulatory patients from a general tertiary public hospital. METHODS: Retrospective study comparing prescriptions of statins and lipid profile results. The significance level was established in 5%. RESULTS: In one year, 9,594 individuals received statin prescriptions, of whom 51.5% were females and the mean age was 63.7±12.9 years-old (18 to 100 years-old). Thirty-two medical specialties prescribed statins. Cardiology was responsible for 43% of the total. Nearly 15% of those patients with a prescription did not have a recent total cholesterol result and 1,746 (18%) did not have a recent LDL-cholesterol measurement. The occurrence of the latter between 130 and 190 mg/dL was present in 1,643 (17.1%) individuals, and 228 (2.4%) patients had an LDL-cholesterol ≥190mg/dL among those using statins at distinct doses. Only two statins were used: simvastatin and atorvastatin. The first was prescribed in 77.6% of the prescriptions. CONCLUSION: In this cross-sectional cohort at a tertiary general hospital, statins have been widely prescribed but with little success in achieving recognized levels of control. There is probably a significant number of FH individuals in this cohort that need to be properly diagnosed in order to receive adequate treatment due to its prognostic implications.


FUNDAMENTO: O surgimento de nova classe de medicamentos com elevada capacidade de reduzir o LDL-colesterol (LDL-c) renovou o interesse na caracterização da hipercolesterolemia familiar (HF). Pouco se conhece do perfil lipídico de pacientes em atendimento terciário em nosso meio para caracterizar a real ocorrência de HF, que começa a ser suspeitada com níveis de LDL-c acima de 190mg/dL. OBJETIVOS: O estudo avaliou o perfil lipídico (colesterol total [CT] e LDL-c) de pacientes de hospital público terciário. MÉTODOS: Estudo retrospectivo de avaliação de prescrições de estatinas e resultados dos lipídios. O nível de significância foi estabelecido em 5%. RESULTADOS: Em 1 ano, 9.594 indivíduos receberam prescrição ambulatorial de estatinas, 51,5% do gênero feminino, idade média de 63,7±12,9 anos (18 a 100 anos). Trinta e duas especialidades prescreveram estatinas, sendo a cardiologia responsável por 43%. Cerca de 15% das prescrições não tinham dosagem recente de CT, e 1.746 (18,0%) não apresentavam resultado recente de LDL-c. A ocorrência de LDL-c > 130mg/dL e < 190mg/dL ocorreu em 1.643 (17,1%) casos, e 228 (2,4%) apresentaram LDL-c ≥ 190mg/dL dentre os que utilizavam estatinas nas diversas doses. Apenas duas estatinas foram utilizadas: sinvastatina e atorvastatina, e a primeira foi prescrita em 77,6% das receitas. CONCLUSÃO: Nesta coorte transversal de hospital terciário, foi possível verificar que a prescrição de estatinas é disseminada, mas que a obtenção de metas adequadas de CT e LDL-c não é atingida em grande percentual, e que há, possivelmente, significativo contingente de portadores de HF que necessitariam ser investigados por suas implicações prognósticas.


Subject(s)
Hydroxymethylglutaryl-CoA Reductase Inhibitors , Hypercholesterolemia , Adolescent , Adult , Aged , Aged, 80 and over , Brazil , Cross-Sectional Studies , Female , Hospitals, Public , Humans , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Hypercholesterolemia/drug therapy , Lipids , Male , Middle Aged , Prescriptions , Retrospective Studies , Young Adult
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