NILSON TAVARES POPPI
Projetos de Pesquisa
Unidades Organizacionais
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/13 - Laboratório de Genética e Cardiologia Molecular, Hospital das Clínicas, Faculdade de Medicina
LIM/13 - Laboratório de Genética e Cardiologia Molecular, Hospital das Clínicas, Faculdade de Medicina
6 resultados
Resultados de Busca
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- A prospective study of patients with refractory angina: outcomes and the role of high-sensitivity troponin T(2017) POPPI, Nilson T.; GOWDAK, Luis H. W.; DOURADO, Luciana O. C.; ADAM, Eduardo L.; LEITE, Thiago N. P.; MIOTO, Bruno M.; KRIEGER, Jose E.; CESAR, Luiz A. M.; PEREIRA, Alexandre C.BackgroundThe predictors of cardiovascular events in patients with chronic refractory angina are limited. High-sensitivity cardiac troponin T (hs-cTnT) assays are biomarkers that may be used to determine the prognosis of patients with stable coronary artery disease. HypothesisHs-cTnT is a predictor of death and nonfatal myocardial infarction (MI) in patients with refractory angina. MethodsWe prospectively enrolled 117 consecutive patients in this study. A heart team ruled out myocardial revascularization feasibility after assessing recent coronary angiograms; evidence of myocardial ischemia served as an inclusion criterion. Optimal medical therapy was encouraged via outpatient visits every 6 months; plasma hs-cTnT levels were determined at baseline. The primary endpoint was the composite incidence of death and nonfatal MI. ResultsDuring a median follow-up period of 28.0 months (interquartile range, 18.0-47.5 months), an estimated 28.0-month cumulative event rate of 13.4% was determined via the Kaplan-Meier method. Univariate predictors of the composite endpoint were hs-cTnT levels and LV dysfunction. Following a multivariate analysis, only hs-cTnT was independently associated with the events in question, either as a continuous variable (hazard ratio per unit increase in the natural logarithm: 2.83, 95% confidence interval: 1.62-4.92, P < 0.001) or as a categorical variable (hazard ratio for concentrations above the 99th percentile: 5.14, 95% confidence interval: 2.05-12.91, P < 0.001). ConclusionsIn patients with chronic refractory angina, plasma concentration of hs-cTnT is the strongest predictor of death and nonfatal MI. Notably, none of the outcomes in question occurred in patients with baseline plasma levels <5.0 ng/L.
- Obstructive sleep apnoea is associated with myocardial injury in patients with refractory angina(2016) GEOVANINI, Glaucylara R.; PEREIRA, Alexandre C.; GOWDAK, Luis H. W.; DOURADO, Luciana Oliveira Cascaes; POPPI, Nilson T.; VENTURINI, Gabriela; DRAGER, Luciano F.; LORENZI-FILHO, GeraldoObjective To investigate the association between obstructive sleep apnoea (OSA) severity with markers of overnight myocardial injury in patients with refractory angina. Methods Patients with refractory angina were characterised clinically and they underwent ischaemia imaging stress tests by single-photon emission computed tomography (SPECT) and/or cardiac MRI. The patients were admitted to the hospital, remained under resting conditions for blood determination of high-sensitivity cardiac troponin T (hs-cTnT) at 14:00, 22:00 and after overnight polysomnography at 7:00. Results We studied 80 consecutive patients (age: 62 +/- 10 years; male: 66%; body mass index (BMI): 29.5 +/- 4 kg/m(2)) with well-established diagnosis of refractory angina. The mean apnoea-hypopnoea index (AHI) was 37 +/- 29 events/h and OSA (AHI >15 events/h) was present in 75% of the population. Morning detectable hs-cTnT and above 99th percentile was present in 88% and 36% of the population, respectively. Patients in the first to third quartiles of OSA severity did not have circadian variation of hs-cTnT. In contrast, patients in the fourth quartile (AHI >= 51 events/h) had a circadian variation of hs-cTnT with a morning peak of hs-cTnT that was two times higher than that in the remaining population (p = 0.02). The highest quartile of OSA severity remained associated with the highest quartile of hs-cTnT (p = 0.028) in multivariate analysis. Conclusion Very severe OSA is common and independently associated with overnight myocardial injury in patients with refractory angina.
- Coronary Artery Bypass Surgery in Diffuse Advanced Coronary Artery Disease: 1-Year Clinical and Angiographic Results(2018) DOURADO, Luciana Oliveira Cascaes; BITTENCOURT, Marcio Sommer; PEREIRA, Alexandre Costa; POPPI, Nilson Tavares; DALLAN, Luis Alberto Oliveira; KRIEGER, Jose Eduardo; CESAR, Luiz Antonio Machado; GOWDAK, Luis Henrique WolffBackground Proper treatment of patients with diffuse, severe coronary artery disease (CAD) is a challenge due to its complexity. Thus, data on the outcomes after coronary artery bypass graft (CABG) in this population is scarce. In this study, we aimed to determine the impact of CABG on the clinical and functional status, as well as graft patency in those individuals. Methods Patients with severe and diffuse CAD who underwent incomplete CABG due to complex anatomy or extensive distal coronary involvement were evaluated preoperatively and 1year after surgery. Postoperative coronary angiography was performed to evaluate graft patency. Graft occlusion was defined as the complete absence of opacification of the target vessel. Stratified analysis of graft occlusion was performed by graft type and territories, defined as left anterior descending artery (LAD), the left circumflex branch, and the right coronary artery territories; the latter two, grouped, were further classified as non-LAD territory. Results A total of 57 patients were included, in whom 131 grafts were placed. There was a significant improvement in Canadian Cardiovascular Society angina symptom severity (Z = -6.1; p < 0.001) and maximum oxygen uptake (p < 0.001), with a corresponding decrease in the use of long-acting nitrates (p < 0.001). The overall graft occlusion rate was 19.1%, with no significant difference between LAD and non-LAD territories (p = 0.08). However, a significantly lower occlusion rate was noted for the internal mammary artery (IMA) grafts when compared with saphenous vein grafts (p = 0.01), though this difference was only significant in the LAD territory (p = 0.04). Overall, the use of venous graft was the only predictor occlusion at 1 year (odds ratio: 4.03; p = 0.016). Conclusion In patients with diffuse CAD, incomplete CABG surgery resulted in a significant clinical improvement, with acceptable graft occlusion rates at 1 year, particularly for IMA grafts to the LAD territory.
- It is Time for Coronary Computed Tomography Angiography to be Incorporated into the SUS(2022) POPPI, Nilson Tavares
- OSA and Depression Are Common and Independently Associated With Refractory Angina in Patients With Coronary Artery Disease(2014) GEOVANINI, Glaucylara R.; GOWDAK, Luis H. W.; PEREIRA, Alexandre C.; DANZI-SOARES, Naury de Jesus; DOURADO, Luciana O. C.; POPPI, Nilson T.; CESAR, Luiz Antonio Machado; DRAGER, Luciano F.; LORENZI-FILHO, GeraldoOBJECTIVE: Refractory angina is a severe form of coronary artery disease (CAD) characterized by persistent angina despite optimal medical therapy. OSA and depression are common in patients with stable CAD and may contribute to a poor prognosis. We hypothesized that OSA and depression are more common and more severe in patients with refractory angina than in patients with stable CAD. METHODS: We used standardized questionnaires and full polysomnography to compare consecutive patients with well-established refractory angina vs consecutive patients with stable CAD evaluated for coronary artery bypass graft surgery. RESULTS: Patients with refractory angina (n = 70) compared with patients with stable CAD (n = 70) were similar in sex distribution (male, 61.5% vs 75.5%; P = .07) and BMI (29.5 +/- 4 kg/m(2) vs 28.5 +/- 4 kg/ m(2), P = .06), and were older (61 +/- 10 y vs 57 +/- 7 y, P = .013), respectively. Patients with refractory angina had significantly more symptoms of daytime sleepiness (Epworth Sleepiness Scale score, 12 +/- 6 vs 8 +/- 5; P < .001), had higher depression symptom scores (Beck Depression Inventory score, 19 +/- 8 vs 10 +/- 8; P < .001) despite greater use of antidepressants, had a higher apnea-hypopnea index (AHI) (AHI, 37 +/- 30 events/h vs 23 +/- 20 events/h; P = .001), higher proportion of oxygen saturation < 90% during sleep (8% + 13 vs 4% + 9, P = .04), and a higher proportion of severe OSA (AHI >= 30 events/h, 48% vs 27%; P = .009) than patients with stable CAD. OSA (P = .017), depression (P < .001), higher Epworth Sleepiness Scale score (P = .007), and lower sleep efficiency (P = .016) were independently associated with refractory angina in multivariate analysis. CONCLUSIONS: OSA and depression are independently associated with refractory angina and may contribute to poor cardiovascular outcome.
- The Role of the Heart Team in Patients with Diffuse Coronary Artery Disease Undergoing Coronary Artery Bypass Grafting(2021) DOURADO, Luciana Oliveira Cascaes; PEREIRA, Alexandre C.; POPPI, Nilson Tavares; CAVALCANTE, Rafael; GAIOTTO, Fabio; DALLAN, Luis Alberto Oliveira; BITTENCOURT, Marcio Sommer; CESAR, Luiz Antonio M.; GOWDAK, Luis Henrique W.Background In patients eligible for coronary artery bypass grafting, no data assess the importance of the Heart Team in programming the best surgical strategy for patients with diffuse coronary artery disease (CAD). This study aims to determine the contribution of the Heart Team in predicting the feasibility of coronary artery bypass graft and angiographic surgical success in these patients based on visual angiographic analysis. Methods Patients with diffuse and severe CAD undergoing incomplete coronary artery bypass graft surgery were prospectively included. One-year postoperative coronary angiograms were obtained to evaluate graft occlusion. Two clinical cardiologists, two cardiovascular surgeons, and one interventional cardiologist retrospectively analyzed preoperative angiograms. A subjective scale was applied at a single moment to quantify the chance of successful coronary artery bypass grafting for each coronary territory with anatomical indication for revascularization. Based on individual scores, the Heart Team's and the specialists' scores were calculated and compared. Results The examiners evaluated 154 coronary territories, of which 85 (55.2%) were protected. The Heart Team's accuracy for predicting the angiographic success of the surgery was 74.9%, almost equal to that of the surgeons alone (73.2%). Only the interventional cardiologist predicted left anterior descending territory grafting success. The Heart Team had good specificity and reasonable sensitivity, and the surgeons had high sensitivity and low specificity in predicting angiographic success. Conclusion The multispecialty Heart Team achieved good accuracy in predicting the angiographic coronary artery bypass graft success in patients with diffuse CAD, with a high specificity and reasonable sensitivity.