CARLOS ALEXANDRE WAINROBER SEGRE

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Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina - Médico

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  • article 1 Citação(ões) na Scopus
    Chronic troponin elevation assessed by myocardial T1 mapping in patients with stable coronary artery disease
    (2023) SEGRE, Carlos Alexandre W.; LEMOS, James A. de; ASSUNCAO, Antonildes Nascimento; NOMURA, Cesar Higa; FAVARATO, Desiderio; STRUNZ, Celia Maria Cassaro; VILLA, Alexandre Volney; PARGA FILHO, Jose Rodrigues; REZENDE, Paulo Cury; HUEB, Whady; RAMIRES, Jose Antonio Franchini; KALIL FILHO, Roberto; SERRANO, Carlos Vicente
    Background:Cardiac troponin detected with sensitive assays can be chronically elevated, in the absence of unstable coronary syndromes. In patients with chronic coronary artery disease, clinically silent ischemic episodes may cause chronic troponin release. T1 mapping is a cardiovascular magnetic resonance technique useful in quantitative cardiac tissue characterization. We selected patients with anatomically and functionally normal hearts to investigate associations between chronic troponin release and myocardial tissue characteristics assessed by T1 mapping. Methods:We investigated the relationship between cardiac troponin I concentrations and cardiovascular magnetic resonance T1 mapping parameters in patients with stable coronary artery disease enrolled in MASS V study before elective revascularization. Participants had no previous myocardial infarction, negative late gadolinium enhancement, normal left ventricular function, chamber dimensions and wall thickness. Results:A total of 56 patients were analyzed in troponin tertiles: nativeT1 and extracellular volume (ECV) values (expressed as means +/- standard deviations) increased across tertiles: nativeT1 (1006 +/- 27 ms vs 1016 +/- 27 ms vs 1034 +/- 37 ms, ptrend = 0.006) and ECV (22 +/- 3% vs 23 +/- 1.9% vs 25 +/- 3%, ptrend = 0.007). Cardiac troponin I concentrations correlated with native T1(R = 0.33, P = .012) and ECV (R = 0.3, P = .025), and were independently associated with nativeT1 (P = .049) and ventricular mass index (P = .041) in multivariable analysis. Conclusion:In patients with chronic coronary artery disease and structurally normal hearts, troponin I concentrations correlated with T1 mapping parameters, suggesting that diffuse edema or fibrosis scattered in normal myocardium might be associated with chronic troponin release.
  • article 1 Citação(ões) na Scopus
    Two-Year Follow-Up of Chronic Ischemic Heart Disease Patients in a Specialized Center in Brazil
    (2023) MOREIRA, Eduardo Martelli; PINESI, Henrique Trombini; MARTINS, Eduardo Bello; PITTA, Fabio Grunspun; BOLTA, Paula Mathias Paulino; SEGRE, Carlos Alexandre Wainrober; FAVARATO, Desiderio; RACHED, Fabiana Hanna; HUEB, Whady Armindo; LIMA, Eduardo Gomes; FILHO, Roberto Kalil; GARZILLO, Cibele Larrosa; JR, Carlos Vicente Serrano
    Background: The incidence of cardiovascular events in patients with chronic ischemic heart disease (CIHD) may vary significantly among countries. Although populous, Brazil is often underrepresented in international records.Objectives: This study aimed to describe the quality of care and the two-year incidence of cardiovascular events and associated prognostic factors in CIHD patients in a tertiary public health care center in Brazil.Methods: Patients with CIHD who reported for clinical evaluation at Instituto do Coracao (Sao Paulo, Brazil) were registered and followed for two years. The primary endpoint was a composite of myocardial infarction (MI), stroke, or death. A significance level of 0.05 was adopted.Results: From January 2016 to December 2018, 625 participants were included in the study. Baseline characteristics show that 33.1% were women, median age 66.1 [59.6 - 71.9], 48.6% had diabetes, 83.1% had hypertension, 62.6% had previous MI, and 70.4% went through some revascularization procedure. At a median follow-up (FU) of 881 days, we noted 37 (7.05%) primary endpoints. After adjustments, age, previous stroke, and LDL-cholesterol were independently associated with the primary endpoint. Comparing baseline versus FU, participants experienced relief of angina based on the Canadian Cardiovascular Society (CCS) scale according to the following percentages: 65.7% vs. 81.7% were asymptomatic and 4.2% vs. 2.9% CCS 3 or 4 (p < 0.001). They also experienced better quality of medication prescription: 65.8% vs. 73.6% (p < 0.001). However, there was no improvement in LDL-cholesterol or blood pressure control. Conclusion: This study shows that CIHD patients had a two-year incidence of the primary composite endpoint of 7.05%, and the reduction of LDL-cholesterol was the only modifiable risk factor associated with prognosis.