PE-SARD Score — Pulmonary Embolism Sub-massive At-Risk for Deterioration

The Pulmonary Embolism Sub-massive At-Risk for Deterioration (PE-SARD) score is designed to identify intermediate-high risk (sub-massive) pulmonary embolism patients who are most likely to deteriorate or fail initial anticoagulation monotherapy — thereby identifying which patients may benefit from early reperfusion strategies (catheter-directed therapy, systemic thrombolysis, or surgical embolectomy) rather than expectant anticoagulation alone. The score addresses the clinical dilemma of managing the large 'gray zone' intermediate-risk PE patients where optimal management (anticoagulation vs. reperfusion vs. monitoring) is uncertain.