Scientific Session 7: Thrombophilia, Filters and Recanalization
Elevated Factor VIII and Venous Thromboembolism Risk
Tamer Salim’s 306 patient study found elevated factor eight levels in 70 percent tested for thrombophilia, more common with venous ulceration, family history of DVT, and unprovoked DVT, with levels above 200 predicting recurrent DVT episodes.
Age and Specialty Predict IVC Filter Retrieval
Anthony Griff’s 200 patient comparison found age was the strongest predictor of failed inferior vena cava filter retrieval, with vascular surgery favoring stricter anticoagulation contraindication criteria and interventional radiology treating more malignancy and bleeding indications.
Pulsatile Phlebitis from Micro Arteriovenous Communications
Doctor Takayama’s 151 case series linked pulsatile phlebitis and varicose veins to micro arteriovenous communications, finding venous pulsation often at the foot or ankle, and reported symptom resolution in about 90 percent after ablation and sclerotherapy.
Monitoring Heparin: Discordant PTT and Anti-Factor Ten Values
Hannah Sams found PTT and anti-factor ten levels were frequently discordant among 33 patients on unfractionated heparin, and William Sherk’s five patient series found radiation related iliocaval obstruction recanalization carries a higher complication rate favoring stent grafts.
