<prompt> a 68 yr old male with ho bladder carcinoma while travelling by flight complained of left leg pain and hemoptysis .pulse is 102 on enquiry he had ho prior hospitalisation for pulmonary embolism he had undergone surgical procedure 3wks back what is clinical probability of thrombolic risk with wells scoring ?wells scoring cannot be calculatedlow risk acc. to wells scoremoderate riskhigh risk  <response>: FEATURES SCOREPOINTS Signs and symptoms of DVT 3 No alternative diagnosis 3 Hea rate more than 100 Bpm 1.5 immobilization more than 3 days or surgery in previous 4 weeks 1.5 Previous DVT or PE 1.5 Hemoptysis 1 Malignancy with active treatment in the past 6 months or under palliative care 1 Pretest clinical Probability PE Unlikely 4 PE Likely 4 PE Pulmonary embolism DVT Deep Vein Thrombosis ref : bailey and love 27th ed 