An intern in the emergency department has been nervously standing behind you for the past ten minutes while you've dealt with a barrage of phone calls. He wants to discuss the positive d-dimer result of the patient he is working up. Y
D-dimer specific for fibrin breakdownsensitivity = 95%specificity = 50%
A patient has chest pain and shortness of breath. Is there a way to rule out pulmonary embolism without further investigation? Can you use the PERC rule?