Marcelo H Miglioranza1, Eugenio Picano2, Luigi P Badano3, Roberto Sant'Anna4, Marciane Rover4, Facundo Zaffaroni5, Rosa Sicari2, Renato K Kalil6, Tiago L Leiria4, Luna Gargani2. 1. Cardiology Institute of Rio Grande do Sul, Porto Alegre, Brazil. Electronic address: marcelohaertel@gmail.com. 2. Institute of Clinical Physiology, National Research Council of Pisa, Italy. 3. University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy. 4. Cardiology Institute of Rio Grande do Sul, Porto Alegre, Brazil. 5. Federal University of Rio Grande do Sul, Porto Alegre, Brazil. 6. Cardiology Institute of Rio Grande do Sul, Porto Alegre, Brazil; Federal Health Sciences University of Porto Alegre, Porto Alegre, Brazil.
Abstract
BACKGROUND: Pulmonary congestion is the main cause of hospital admission among heart failure (HF) patients. Lung ultrasound (LUS) assessment of B-lines has been recently proposed as a reliable and easy tool for evaluating pulmonary congestion. OBJECTIVE: To determine the prognostic value of LUS in predicting adverse events in HF outpatients. METHODS: Single-center prospective cohort of 97 moderate-to-severe systolic HF patients (53±13years; 61% males) consecutively enrolled between November 2011 and October 2012. LUS evaluation was performed during the regular outpatient visit to evaluate the presence of pulmonary congestion, determined by B-lines number. Patients were followed up for 4months to assess admission due to acute pulmonary edema. RESULTS: During follow-up period (106±12days), 21 hospitalizations for acute pulmonary edema occurred. At Cox regression analysis, B-lines number≥30 (HR 8.62; 95%CI: 1.8-40.1; p=0.006) identified a group at high risk for acute pulmonary edema admission at 120days, and was the strongest predictor of events compared to other established clinical, laboratory and instrumental findings. No acute pulmonary edema occurred in patients without significant pulmonary congestion at LUS (number of B-lines<15). CONCLUSION: In a HF outpatient setting, B-line assessment by LUS identifies patients more likely to be admitted for decompensated HF in the following 4months. This simple evaluation could allow prompt therapy optimization in those patients who, although asymptomatic, carry a significant degree of extravascular lung water. CONDENSED ABSTRACT: Pulmonary congestion is the main cause of hospital admissions among heart failure patients. Lung ultrasound can be used as a reliable and easy way to evaluate pulmonary congestion through assessment of B-lines. In a cohort of heart failure outpatients, a B-lines cutoff≥30 (HR 8.62; 95%CI: 1.8-40.1) identified patients most likely to develop acute pulmonary edema at 120-days.
BACKGROUND:Pulmonary congestion is the main cause of hospital admission among heart failure (HF) patients. Lung ultrasound (LUS) assessment of B-lines has been recently proposed as a reliable and easy tool for evaluating pulmonary congestion. OBJECTIVE: To determine the prognostic value of LUS in predicting adverse events in HF outpatients. METHODS: Single-center prospective cohort of 97 moderate-to-severe systolic HFpatients (53±13years; 61% males) consecutively enrolled between November 2011 and October 2012. LUS evaluation was performed during the regular outpatient visit to evaluate the presence of pulmonary congestion, determined by B-lines number. Patients were followed up for 4months to assess admission due to acute pulmonary edema. RESULTS: During follow-up period (106±12days), 21 hospitalizations for acute pulmonary edema occurred. At Cox regression analysis, B-lines number≥30 (HR 8.62; 95%CI: 1.8-40.1; p=0.006) identified a group at high risk for acute pulmonary edema admission at 120days, and was the strongest predictor of events compared to other established clinical, laboratory and instrumental findings. No acute pulmonary edema occurred in patients without significant pulmonary congestion at LUS (number of B-lines<15). CONCLUSION: In a HF outpatient setting, B-line assessment by LUS identifies patients more likely to be admitted for decompensated HF in the following 4months. This simple evaluation could allow prompt therapy optimization in those patients who, although asymptomatic, carry a significant degree of extravascular lung water. CONDENSED ABSTRACT: Pulmonary congestion is the main cause of hospital admissions among heart failurepatients. Lung ultrasound can be used as a reliable and easy way to evaluate pulmonary congestion through assessment of B-lines. In a cohort of heart failure outpatients, a B-lines cutoff≥30 (HR 8.62; 95%CI: 1.8-40.1) identified patients most likely to develop acute pulmonary edema at 120-days.
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