• Stefano Barco, Seyed Hamidreza Mahmoudpour, Benjamin Planquette, Olivier Sanchez, Stavros V Konstantinides, and Guy Meyer.
• Center for Thrombosis and Haemostasis (CTH), University Medical Centre of the Johannes Gutenberg University, Langenbeckstraße 1, Mainz, Germany.
• Eur. Heart J. 2019 Mar 14; 40 (11): 902-910.

AimsPatients with acute pulmonary embolism (PE) classified as low risk by the Pulmonary Embolism Severity Index (PESI), its simplified version (sPESI), or the Hestia criteria may be considered for early discharge. We investigated whether the presence of right ventricular (RV) dysfunction may aggravate the early prognosis of these patients.Methods And ResultsWe did a systematic review and meta-analysis of studies including low-risk patients with acute PE to investigate the prognostic value of RV dysfunction. Diagnosis of RV dysfunction was based on echocardiography or computed tomography pulmonary angiography. In addition, we investigated the prognostic value of elevated troponin or natriuretic peptide levels. The primary outcome was all-cause mortality at 30 days or during hospitalization. We included 22 studies (N = 3295 low-risk patients) in the systematic review: 21 were selected for quantitative analysis. Early all-cause mortality rates in patients with vs. without RV dysfunction on imaging were 1.8% [95% confidence interval (CI) 0.9-3.5%] vs. 0.2% (95% CI 0.03-1.7%), respectively, [odds ratio (OR) 4.19, 95% CI 1.39-12.58]. For troponins, rates were 3.8% (95% CI 2.1-6.8%) vs. 0.5% (95% CI 0.2-1.3%), (OR 6.25, 95% CI 1.95-20.05). For natriuretic peptides, only data on early PE-related mortality were available: rates were 1.7% (95% CI 0.4-6.9%) vs. 0.4% (95% CI 0.1-1.1%), (OR 3.71, 95% CI 0.81-17.02).ConclusionsIn low-risk patients with acute PE, the presence of RV dysfunction on admission was associated with early mortality. Our results may have implications for the management of patients who appear at low risk based on clinical criteria alone, but present with RV dysfunction as indicated by imaging findings or laboratory markers.© The Author(s) 2018. Published by Oxford University Press on behalf of the European Society of Cardiology.

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