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DFW Vascular News

Opportunity to Enroll for Clinical Study at DFW for Chronic DVT


Was your DVT diagnosed at least 6 months ago?

Do you have any of these symptoms?

• Chronic pain impacting quality of life
• Leg swelling or heaviness
• Itching, tingling or numbness
• Skin redness or discoloration

If so, you may be eligible to participate in a study using a minimally-invasive technique in treating “old” blood clots and related conditions in your leg.

Visit for more information


DFW Vascular Group
Jasmine Richmond, Research Coordinator
Phone: (469) 221-7923


Length of Exposure to High Cholesterol in Young Adulthood May Increase Later Risk For Heart Disease

A new study published in Circulation suggests that length of exposure to high cholesterol should be considered as an additional risk factor for Coronary Heart Disease (CHD). Young adults who had moderately elevated non-HDL cholesterol for prolonged periods, at levels that do not qualify for statin treatment criteria, were more likely than their peers who were exposed to shorter periods of elevated non-HDL cholesterol levels to have CHD in later life. The length of exposure to high cholesterol, and not just the level of high cholesterol, increases the risk of developing CHD. This study suggests the importance of controlling cholesterol level even for young adults.


First Report Of Internal Jugular Vein Narrowing— A New Concept In Thoracic Outlet Syndrome


We have dedicated a number of recent posts to the discussion of thoracic outlets syndrome (TOS), a condition which causes compression of the blood vessels and nerves at the top of the chest. Drs. Sam Ahn and Robert Feldtman of DFW Vascular, along with other colleagues, study this condition and recently found that compression (stenosis) of the internal jugular vein is found in patients with TOS.

This finding represents a new concept in the diagnosis of this often debilitating condition. Furthermore, the authors reported that using a balloon on the tip of a catheter to expand the compression or blockage in the jugular and/or subclavian veins can relieve symptoms of TOS. This new concept will be presented to other surgeons at the Fall semi-annual meeting of The Texas Surgical Society to be held this September in Houston (

Below is the abstract of the scientific paper to be presented at the meeting.

TITLE: Percutaneous Transluminal Angioplasty as Therapy for Thoracic Outlet Symptoms

AUTHORS: Ahn, Samuel S; Chen, Julia F;  Miller, Travis J.; Chen, Sheena W.; Feldtman, Robert; Hwang, William

OBJECTIVES: Traditionally, thoracic outlet syndrome (TOS) has been associated with axillo-subclavian  vein stenosis without any mention of the internal jugular (IJ) vein.  However, we recently reported a high prevalence of IJ stenosis in 109 patients with TOS in a limited study.  To further understand the clinical significance of this finding, we analyzed a larger cohort of patients and their subsequent follow-up.

METHODS:  We retrospectively analyzed 237 consecutive unique patients referred to our practice with thoracic outlet syndrome. From April ’08 to Dec ’12, all patients underwent diagnostic brachiocephalic venograms. Average age was 49.9 years (r:17 to 81), with 71.8% females and 28.2% male. We looked at the right and left internal jugular veins and the right and left subclavian veins. Stenoses were classified into high (>66%), medium (33%-66%),and  low (<33%). We also looked for presence of collaterals around the obstructions.  Venogram findings were independently confirmed by four investigators.  For the purposes of this analysis, high stenosis was considered significant. Medium and low stenoses were considered significant only if there were visible collaterals.  Of this group, we then looked at all patients who received intervention via PTA at the stenosed IJ sites.  Patients were categorized into Groups I or II.  Group I: patients who received no immediate relief of symptoms after PTA; Group II: patients who did receive immediate relief of symptoms after PTA.  Group II was further broken down into subgroups IIA, IIB, and IIC.  Group IIA: those who required additional surgical intervention due to symptom recurrence; Group IIB: those who report sustained relief; Group IIC: those who were lost to follow-up.

RESULTS:  Left internal jugular vein stenosis, left subclavian vein stenosis, right internal jugular vein stenosis, and right subclavian vein stenosis was seen in 67.5%, 57.6%, 62.7%, and 61.6% of patients, respectively. Internal jugular vein stenosis was not present in 18.1% of patients, present unilaterally in 33.3% of patients, and present bilaterally in 48.5% of patients. Subclavian vein stenosis was not present in 24.1% of patients, present unilaterally in 32.5% of patients, and present bilaterally in 43.5% of patients. Significant collaterals were present in 26.80% of high stenosis, 21.5% of medium and 12.8% of low.  Of 237 patients, 67.7% (n=147) received PTA intervention.  Of those who received intervention, 28.6% (n=42) were in Group I, 67.4% (n=99) were in Group II, and 4% (n=6) did not have available data.  Of those in Group II, the breakdown was as follows:  IIA (35%, n=34) with a median of less than 7 days (r: 2-210) of relief; IIB (31%, n=31) with 120 days (r: 5 to 406) of follow-up; IIIC (31%, n=31) with 93.5% (n=29) reporting sustained relief at 7-day follow-up and median follow-up of 7 days (avg: 25, r: 6-182).

CONCLUSIONS: Internal jugular vein stenosis is common in patients with thoracic outlet symptoms and percutaneous treatment provides benefit to some patients.  These findings could fundamentally change the diagnosis and treatment of thoracic outlet syndrome.  Further studies are warranted.

If you have numbness or tingling in the arms or hands, call DFW Vascular to schedule a consultation with one of our expert surgeons.

The Dangers Of The Diabetic Foot Ulcer


As many diabetics already unfortunately know, the proper care and monitoring of their feet is an important part of their treatment regimen. The reason is that diabetes negatively affects both the big and small blood vessels throughout the body. As a result,  a small injury to the foot can, without proper blood supply, turn into a major loss of tissue, sometimes with an accompanying infection. In order to keep the infection contained, amputations are often necessary. Thankfully, there are a number of options available for the treatment of difficult diabetic ulcers.

The physicians at DFW Vascular are experts in the diagnosis and treatment of the vascular complications of diabetes. If you are diabetic and have an untreated wound, don’t waste any time in calling DFW Vascular today to schedule an appointment.


Dodger Pitcher Undergoes Surgery For Thoracic Outlet Syndrome


Earlier this week, Los Angeles Dodger pitcher Josh Beckett underwent surgery to remove his right first rib. Why does a pitcher need to have a first rib removed? The reason relates to thoracic outlet syndrome, a condition in which nerves and blood vessels are compressed by the anatomy at the top of the chest cavity. As was the case with Mr. Beckett, many patients with thoracic outlet syndrome often present with numbness and tingling in their arm and hand. While a number of patients need invasive surgery, the surgeon experts at DFW Vascular may be able to use minimally invasive office-based techniques to treat the condition.

To learn more about DFW surgeons Drs. Samuel Ahn and Robert Feldtman recent presentation of their research (performed in collaboration with other physicians) in the area of thoracic outlet syndrome, please look at our most recent post, “What is Thoracic Outlet Syndrome?”

If you suffer from numbness and tingling in your arm and hand, or have been told you may have thoracic outlet syndrome, please call DFW Vascular today to schedule a consultation.


What is Thoracic Outlet Syndrome?


Thoracic Outlet Syndrome (TOS) is a condition in which there is compression or pressure on the nerves and blood vessels at the top of the thoracic (chest) cavity. The syndrome can present with a number of different signs and symptoms, but most who suffer complain of persistent pain. Drs. Samuel Ahn and Robert Feldtman of DFW Vascular are experts in the diagnosis and treatment of this condition and recently shared new research in this field to other vascular surgeons attending the 2013 Society for Vascular Surgery (SVS). Their work, performed in conjunction with their collaborators, evaluated how blockages in the internal jugular vein play a role in this condition. The authors studied just under 250 patients for over a 4-year period and analyzed the data to look for relationships between this jugular vein blockage and the condition. The authors reported that internal jugular vein blockage is common in these patients and may contribute to their symptoms. Importantly, the authors also stated that patients experienced temporary benefits in symptoms after using catheter-based balloons to inflate the areas of blockage. In the accompanying slides, one can see a few key points of this important research.

  1. The first slide documents the anatomy of the thoracic outlet and notes the compression of key structures.
  2. Using dye being photographed through the veins, one can see where blockage occurs.
  3. Using special catheters, a balloon is inflated at the site of compression (Left with blockage, right post balloon expansion)
  4. Compression of the internal jugular vein is common in TOS and balloon expansion may help with symptoms.

Further work on the causes and treatment of TOS will continue in an effort to bring relief to the patients suffering from this condition. If you have persistent arm and neck pain, or suffer from persistent headaches, call DFW Vascular today and set up an appointment to meet with one of their surgeons. A straight-forward, office-based (outpatient) procedure may be the solution to years of pain and discomfort.

Click here for more information on TOS from the Society for Vascular Surgery, or view Dr. Feldtman’s presentation.


The Dangers of Lower Extremity Vascular Disease

The Dangers of Lower Extremity Vascular Disease

Our mission at Vascular Management Associates is to enable and assist physicians who specialize in treating vascular disease. Unfortunately, vascular specialists need to occasionally amputate as one of the most serious complications of peripheral arterial disease (PAD) in the lower extremities. How does one go from poor blood flow to the leg to requiring amputation?

Well, the step between relates to a formation of a wound. If an individual has a leg with poor blood supply and develops a wound, the underlying vascular disease (usually complicated by diabetes) makes healing of the wound difficult and slow. Left unchecked, the wound can become infected and spread to occupy a greater portion of the leg. If the infection expands enough, it can become a systemic (total body) problem putting the life of the patient at risk. Therefore, removal of the entire or part of leg is what is necessary to save a life.

Fortunately, peripheral vascular disease is usually treatable and the surgeons at DFW Vascular ( and University Vascular Associates ( have been using office-based minimally invasive approaches to treat patients with serious disease. If you are over 50, smoke, have diabetes or coronary artery disease, you are at risk for PAD. Don’t go unchecked and run the risk of loss of limb or life—call or write DFW Vascular or University Vascular today for a consultation.


June 10-16 is National Men’s Health Week

Mens Health Week 2

The purpose of Men’s Health Week is to heighten the awareness of preventable health problems and encourage early detection and treatment of disease among men and boys.

DFW Vascular is recognizing Men’s Health Week by calling attention to the scores of men who may have peripheral artery disease (PAD) and not even know it. PAD is a clinical condition caused by a lack of blood flow to the extremities, and most commonly affects the legs. Symptoms can include lower extremity pain, numbness and tingling, and even ulcers that do not heal normally. Patients at risk for PAD are also at increased risk for heart disease, stroke, and erectile dysfunction (ED).

Men at high risk for PAD are typically over 50, diabetic, smokers, and have a history of high blood pressure. While PAD is very serious and can lead to loss of a limb or death, treatment can straightforward. The vascular surgeons at DFW Vascular have developed RESTORE, an innovative procedure that treats PAD with an office-based procedure that allows the majority of patients to go home the same day, avoiding a lengthy and involved bypass procedure.

Celebrate Men’s Health Week by calling DFW Vascular and get screened for PAD.



Leadership in Office-Based Angiography

On June 1st and 2nd in San Francisco, members of the DFW Vascular leadership team, in coordination with Vascular Management Associates (, held an important workshop on how to set-up and effectively run an office-based angiography suite. This first ever workshop had over 30 people in attendance and provided an opportunity to share with others some of the best clinical and operational practices pioneered here at DFW Vascular. The feedback from the event was overwhelmingly positive, with one participant stating their appreciation of “the open details about important things to consider for patient satisfaction, safety, and good quality outcomes.” In addition, all participants who provided feedback would recommend the event to their colleagues.Keep an eye out for future events held by DFW Vascular. If you are a referring physician who has questions about office-based angiography, please contact our office today and speak to any of our DFW Vascular physicians.



DFW Vascular…Leadership In Vascular Surgery

DFW Vascular…Leadership In Vascular Surgery

The 2013 annual meeting of the Society for Vascular Surgery will take place from May 30-June 1 in San Francisco, California. The meeting brings together vascular experts from around the world to discuss, explore, and share the latest in the surgical treatment of vascular diseases. DFW Vascular’s Dr. Sam Ahn is a leading expert in thoracic outlet syndrome and will be speaking about internal jugular vein stenosis at the rapid pace educational session on Saturday, June 1st. Dr. Ahn will be sharing with other physicians his insights into treating this difficult clinical condition.

Thoracic outlet syndrome is caused by excess pressure on the nerves and blood vessels in the neck and arm. The most common symptom is upper extremity and/or hand pain. If you have been suffering from unexplained arm and/or hand pain, contact DFW Vascular today to see if you may have thoracic outlet syndrome.