Acute Pulmonary Embolism: Contemporary Approach to Diagnosis, Risk-Stratification, and Management.

Area of Science:

• Cardiology
• Pulmonology
• Vascular Medicine

Background:

• Pulmonary embolism (PE) impacts over 300,000 individuals annually in the U.S., causing significant morbidity and mortality.
• Advances in computed tomographic pulmonary angiography (CTPA) and D-dimer testing have enhanced PE diagnostic capabilities.
• Clinical suspicion, supported by risk scores like Wells score or PE rule-out criteria, is crucial for evaluating patients with suspected PE.

Purpose of the Study:

• To outline current diagnostic and risk stratification strategies for pulmonary embolism.
• To describe management pathways based on patient stability and risk assessment.
• To highlight the role of multidisciplinary PE response teams in optimizing patient care.

Main Methods:

• Utilizing validated clinical risk scores (Wells, modified Wells, PE rule-out criteria) to estimate PE likelihood.
• Categorizing patients based on hemodynamic stability (shock, hypotension).
• Risk-stratifying normotensive patients using prognostic scores, imaging (right ventricular dysfunction), and cardiac biomarkers.

Main Results:

• Patients are triaged based on shock or hypotension presence.
• Intermediate-risk patients, identified by RV dysfunction or biomarkers, require close monitoring and admission.
• Low-risk patients without high-risk features may be discharged early with home therapy.

Conclusions:

• Initial treatment for stable PE typically involves anticoagulation.
• Advanced therapies (thrombolysis, catheter-based, surgical embolectomy) are reserved for high-risk patients.
• Multidisciplinary PE response teams aid decision-making due to PE's complex presentation and varied management options.