Impact of clinical profile at admission on the outcomes in patients hospitalized for acute pulmonary embolism: data from the IPER Registry.

Acute pulmonary embolism (PE) is characterized by a large heterogeneity of clinical presentation and disease course. We investigate whether different symptom PE phenotypes in hemodynamically stable PE could be associated with 30-day mortality risk. Hemodynamically stable patients from the multicentre, prospective Italian Pulmonary Embolism Registry (IPER) (September 2006-August 2010) presenting the most common four clinical phenotypes (< 24 h onset dyspnoea, chest pain, pleuritic pain and phlebitis) at admission were included and compared to those who were asymptomatic at admission. Overall, 1365 (mean age 68.7 ± 15.3 years, 609 males) were evaluated. Recent onset dyspnoea (< 24 h), chest pain, pleuritic pain and phlebitis were observed in 28.4%, 19.7%, 12.9% and 25.2%, respectively while asymptomatic patients represented the remaining 13.6% of cases. PE presenting with recent dyspnoea onset and chest pain had a lower 30-day overall survival (log-rank p = 0.01 and p < 0.001, respectively). By contrast, there were no significant differences when comparing patients with pleuritic pain or phlebitis (log-rank p = 0.2). Similar findings were confirmed at the Cox multivariate regression analysis which indicated a higher mortality risk in patients with chest pain [HR 3.21, 95% CI 2.16-4.78, p < 0.001] or recent dyspnoea [HR 2.12, 95% CI 1.22-3.87, p = 0.002] independent of age, heart rate, presence of right ventricular dysfunction, positive cardiac troponin and administration of systemic thrombolysis. Hemodynamically stable PE patients presenting with chest pain or recent onset dyspnoea had a lower 30-day survival compared to those asymptomatic or presenting pleuritic or phlebitis pain.Trial registry ClinicalTrials.gov; No: NCT01604538).