• Pierre-Géraud Claret, Lisa A Calder, Ian G Stiell, Justin W Yan, Catherine M Clement, Bjug Borgundvaag, Alan J Forster, Jeffrey J Perry, and Brian H Rowe.
• *Department of Anesthesia Resuscitation Pain Emergency Medicine,Nîmes University Hospital,Nîmes,France.
• Can J Emerg Med. 2018 Mar 1; 20 (2): 222-229.

ObjectivesFollowing release by emergency department (ED) for acute heart failure (AHF), returns to ED represent important adverse health outcomes. The objective of this study was to document relapse events and factors associated with return to ED in the 14-day period following release by ED for patients with AHF.MethodsThe primary outcome was the number of return to ED for patients who were release by ED after the initial visit, for any related medical problem within 14 days of this initial ED visit.ResultsReturn visits to the EDs occurred in 166 (20%) patients. Of all patients who returned to ED within the 14-day period, 77 (47%) were secondarily admitted to the hospital. The following factors were associated with return visits to ED: past medical history of percutaneous coronary intervention or coronary artery bypass graft (aOR=1.51; 95% CIs [1.01-2.24]), current use of antiarrhythmics medications (1.96 [1.05-3.55]), heart rate above 80 /min (1.89 [1.28-2.80]), systolic blood pressure below 140 mm Hg (1.67[1.14-2.47]), oxygen saturation (SaO2) above 96% (1.58 [1.08-2.31]), troponin above the upper reference limit of normal (1.68 [1.15-2.45]), and chest X-ray with pleural effusion (1.52 [1.04-2.23]).ConclusionsMany heart failure patients (i.e. 1 in 5 patients) are released from the ED and then suffer return to ED. Patients with multiple medical comorbidities, and those with abnormal initial vital signs are at increased risk for return to ED and should be identified.

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