Related Experiment Video
Updated: May 25, 2026

An In vitro System to Gauge the Thrombolytic Efficacy of Histotripsy and a Lytic Drug
Published on: June 4, 2021
Pharmacomechanical thrombolysis for phlegmasia cerulea dolens
Luke S Erdoes1, Jessica B Ezell, Stuart I Myers
1Department of Surgery, University of Tennessee College of Medicine, Chattanooga, Chattanooga, Tennessee 37403, USA. erdoesls@comcast.net
Insights
Phlegmasia cerulea dolens (PCD) is a serious condition. Percutaneous treatment using tissue plasminogen activator (tPA) offers excellent results with minimal morbidity, avoiding open surgery.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Thrombosis Management
Background:
- Phlegmasia cerulea dolens (PCD) is a severe venous thromboembolism causing limb ischemia.
- Traditional surgical interventions for PCD carry significant morbidity.
- Minimally invasive approaches are needed to improve PCD treatment outcomes.
Purpose of the Study:
- To evaluate the efficacy and safety of percutaneous treatment for lower extremity Phlegmasia cerulea dolens (PCD).
- To assess the need for open surgery and associated morbidities in PCD patients undergoing endovascular therapy.
Main Methods:
- Retrospective analysis of 20 patients (21 limbs) with lower extremity PCD treated between May 2005 and September 2008.
- Diagnosis confirmed via clinical examination and duplex ultrasound.
- Percutaneous treatment involved pulse spray thrombolysis with tissue plasminogen activator (tPA), infusion catheters, and adjunctive angioplasty/stenting as needed.
Main Results:
- All patients achieved resolution of PCD without requiring open surgery.
- Mean initial tPA dose was 19.5 mg; infusion catheters were used for a mean of 16.1 hours.
- 14 patients required venous angioplasty, with 9 receiving stents. One patient underwent amputation despite successful PCD treatment.
- Mean follow-up of 10.7 months showed minimal residual thrombus and intact valvular function (mean CEAP score 2.4).
Conclusions:
- Percutaneous treatment of Phlegmasia cerulea dolens (PCD) is highly effective, yielding excellent outcomes.
- This minimally invasive approach significantly reduces morbidity compared to traditional open surgical methods.
- Endovascular therapy provides a safe and effective alternative for managing limb-threatening PCD.
Abstract:
Phlegmasia cerulea dolens (PCD) is limb-threatening. Traditional treatments are very morbid. We examine the efficacy of percutaneous treatment of PCD. Between May 2005 and September 2008, we treated 21 limbs in 20 patients with lower extremity PCD who were candidates for thrombolysis. Diagnosis was by clinical examination and duplex ultrasound. Catheter access to the deep venous system was obtained through a popliteal vein. Therapy used pulse spray thrombolysis with tissue plasminogen activator (tPA). Infusion catheters and adjunctive percutaneous techniques were used as indicated. Postoperatively, patients were treated with systemic anticoagulation, compression hose, and interval follow-up. Limbs were graded according to the CEAP classification. Twenty patients (13 male) were treated with a mean age of 55.8 years. Nine patients had hypercoagulable states, four May Thurner syndrome, three a history of cancer, one postcolon resection, one acute myocardial infarction, and one postfemoral vein puncture. All patients had resolution of PCD without the need for open surgery. The initial tPA dose was 19.5 mg with pulse spray thrombolysis. Infusion catheters were required in 18 patients and used for 16.1 hours (range, 8 to 36 hours) until complete thrombolysis. Venous angioplasty was necessary in 14 patients with nine of these requiring venous stents. One patient required above-knee amputation despite successful treatment of her PCD. Mean follow-up was 10.7 months (range, 1 to 39 months). All patients demonstrated no or minimal residual thrombus and intact valvular function and a mean clinical CEAP score of 2.4. Percutaneous treatment of PCD produced excellent results with minimal morbidity.
Related Concept Videos
Peripheral Artery Disease III: Interprofessional Care
Venous Thrombosis III: Interprofessional Care
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
Pulmonary Embolism III: Nursing Management
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
