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Arq. bras. cardiol ; 103(3): 231-237, 09/2014. tab, graf
Article in English | LILACS | ID: lil-723827

ABSTRACT

Background: Heart failure with preserved ejection fraction (HFPEF) is the most common form of heart failure (HF), its diagnosis being a challenge to the outpatient clinic practice. Objective: To describe and compare two strategies derived from algorithms of the European Society of Cardiology Diastology Guidelines for the diagnosis of HFPEF. Methods: Cross-sectional study with 166 consecutive ambulatory patients (67.9±11.7 years; 72% of women). The strategies to confirm HFPEF were established according to the European Society of Cardiology Diastology Guidelines criteria. In strategy 1 (S1), tissue Doppler echocardiography (TDE) and electrocardiography (ECG) were used; in strategy 2 (S2), B-type natriuretic peptide (BNP) measurement was included. Results: In S1, patients were divided into groups based on the E/E'ratio as follows: GI, E/E'> 15 (n = 16; 9%); GII, E/E'8 to 15 (n = 79; 48%); and GIII, E/E'< 8 (n = 71; 43%). HFPEF was confirmed in GI and excluded in GIII. In GII, TDE [left atrial volume index (LAVI) ≥ 40 mL/m2; left ventricular mass index LVMI) > 122 for women and > 149 g/m2 for men] and ECG (atrial fibrillation) parameters were assessed, confirming HFPEF in 33 more patients, adding up to 49 (29%). In S2, patients were divided into three groups based on BNP levels. GI (BNP > 200 pg/mL) consisted of 12 patients, HFPEF being confirmed in all of them. GII (BNP ranging from 100 to 200 pg/mL) consisted of 20 patients with LAVI > 29 mL/m2, or LVMI ≥ 96 g/m2 for women or ≥ 116 g/m2 for men, or E/E'≥ 8 or atrial fibrillation on ECG, and the diagnosis of HFPEF was confirmed in 15. GIII (BNP < 100 pg/mL) consisted of 134 patients, 26 of whom had the diagnosis of HFPEF confirmed when GII parameters were used. Measuring BNP levels in S2 identified 4 more patients (8%) with HFPEF as compared with those identified in S1. Conclusion: The association of BNP measurement and TDE data ...


Fundamento: A insuficiência cardíaca com fração de ejeção normal é a forma mais comum de insuficiência cardíaca e seu diagnóstico é um desafio na prática ambulatorial. Objetivo: Descrever e comparar duas estratégias, derivadas dos algoritmos do Consenso Europeu de Diastologia para diagnóstico de insuficiência cardíaca com fração de ejeção normal. Métodos: Estudo transversal com 166 pacientes (67,9 ± 11,7 anos, 72% mulheres) ambulatoriais consecutivos. As estratégias para confirmar insuficiência cardíaca com fração de ejeção normal foram estabelecidas de acordo com os critérios do Consenso Europeu de Diastologia. Na estratégia 1, utilizamos dados do eco Doppler tecidual e eletrocardiograma; na estratégia 2, incluímos o peptídeo natriurético tipo B. Resultados: Na primeira estratégia, os pacientes foram classificados em grupos, de acordo com a relação E/E': GI se E/E' > 15 (n = 16; 9%); GII se E/E' 8 a 15 (n = 79; 48%); e GIII se E/E' < 8 (n = 71; 43%). Insuficiência cardíaca com fração de ejeção normal foi confirmada no GI e excluída no GIII. No GII, parâmetros do eco Doppler tecidual (volume do átrio esquerdo indexado ≥ 40 mL/m2; massa do ventrículo esquerdo indexado > 122 para mulheres e > 149 g/m2 para homens) e do eletrocardiograma (fibrilação atrial) foram analisados, confirmando insuficiência cardíaca com fração de ejeção normal em mais 33 pacientes, totalizando 49 (29%). Na estratégia 2, utilizando o peptídeo natriurético tipo B, os pacientes foram divididos em três grupos. O GI (peptídeo natriurético tipo B > 200 pg/mL) foi formado por 12 pacientes e a insuficiência cardíaca com fração ...


Subject(s)
Aged , Female , Humans , Male , Middle Aged , Heart Failure/diagnosis , Heart Failure/physiopathology , Heart Ventricles/physiopathology , Stroke Volume/physiology , Algorithms , Ambulatory Care Facilities , Atrial Fibrillation/physiopathology , Atrial Fibrillation , Cross-Sectional Studies , Echocardiography, Doppler , Electrocardiography , Guidelines as Topic , Natriuretic Peptide, Brain/blood , Reference Standards , Reproducibility of Results , Sensitivity and Specificity , Statistics, Nonparametric
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