Pulmonologist Questions

Ddimer

Female 38
For about two weeks now I have felt sob and high heart rate… oxygen is fine. I’ve had a ddimer on the 19th. 22nd. And the 30th all were the same supposed to be .50 or under mines .52. Drs didn’t want to do any scans bcs I’ve had elevated ddimers before and it’s not extremely elevated and my o2 is ok. Plus I’m allergic to ct dye and steroids. However I’m still worried

Female | 38 years old
Complaint duration: 2 weeks

1 Answer

Normal D-dimers have high negative predictive value and as such borderline elevated D-dimers might not be informative. Clinical correlation would be required for prognostication regarding PE. Patient can get VQ scan and lower extremity venous dopplers if suspicion for VTE (venous thromboembolism) is high including family history of VTE, use of oral contraceptives, prolonged immobilization, etc..