The University of Texas Health Science Center, Houston
This study seeks to demonstrate the effect of advanced pneumatic compression in treatment naïve patients with CEAP C3 and C4 chronic venous disease. The main questions it aims to answer are: * Does lymphatic treatment improve lymphatic function following \~30 days of advanced pneumatic compression device therapy? * Does lymphatic dysfunction correlate with CEAP score and venous reflux times? Over the course of 30-45 days, participants will undergo two sessions of near-infrared fluorescence lymphatic imaging to assess whether advanced pneumatic compression treatment improves lymphatic (dys)function. Subjects will be divided into two groups, a treated and a control group. Both groups will receive standard-of-care compression bandaging. The treated group will also be asked to complete daily sessions of pneumatic compression therapy at home. At both imaging sessions, duplex ultrasound will also be used to assess venous reflux times. Researchers will compare the changes in lymphatic and venous (dys)function between the two groups to see if lymphatic function improves with pneumatic compression treatment and if they dysfunction is correlated with CEAP clinical score and venous reflux times.
Inclusion Criteria: 1. Participant \>18 years of age 2. Participant with an objective diagnosis of CEAP Class 3 or 4 superficial venous disease (superficial reflux time \>0.5 sec), with venous edema (revised VCSS score of 2 or 3 for edema). 3. Participant must provide informed consent 4. Participant is willing and able to fulfill study timeline 5. Participant is a candidate for APCD treatment per the FTP indications 6. Lymphatic dysfunction is observed, using NIRF-LI, in affected limb. Exclusion Criteria: 1. History of pelvic or lower extremity cancers 2. Systemic organ failure including he…
A total of 10 intradermal injections of 25 ug indocyanine green (ICG) in 0.1 mL saline are administered in the feet, medial ankles, lateral calves, and thigh. The total dose of ICG will not exceed 250 ug. After injection, the legs will be illuminated by the dim output of a 780 nm laser diode, and the resultant fluorescent signal emanating from ICG-laden lymph will be collected by a custom built near-infrared fluorescent lymphatic imager.
The advanced pneumatic compression device (APCD) mimics manual lymphatic drainage, a light massage that stimulates lymphatic uptake and function and frequently prescribed for lymphedema therapy. Daily treatment will be prescribed for approximately 30 days.
Duplex ultrasound to measure venous reflux will be done at each visit.
A compression wrap, to provide 20-40 mm Hg of pressure, will be provided for daily use between visits (approximately 30 days).