Mixed arterial venous disease is estimated to affect up to 26% of patients with lower extremity ulcerations. However, its clinical significance and pathophysiology are incompletely understood. Furthermore, there is no consensus on the optimal treatment modality, whether conservative or operative. In this review paper, we describe the current understanding of the pathophysiology of mixed arterial venous lower extremity ulcers. Guidelines for diagnostic tests for patients with mixed arterial venous diseases are discussed. We review some of the newer biological skin substitutes for conservative wound care. Finally, we propose a treatment algorithm based on current available data.

Objective . To report an incidence of reflux in the deep venous system reversed by ablation of a popliteal fossa vein (PFV). Method . A 40-year-old man with pain and swelling in the medial upper calf was found to have an incompetent PFV. Results . Reflux in the femoral and popliteal veins was reversed utilizing endovenous laser ablation and foam sclerotherapy, documented on Duplex studies before and after the intervention. There was also resolution of symptoms. Conclusion . A PFV can be associated with deep venous reflux. Correction of this reflux with ablation of the PFV suggests that his type of reflux is secondary to volume effects of the incompetent popliteal vein.

Introduction Arteriovenous malformations (AVMs) are abnormal, direct connections between the arteries and veins. AVMs are most commonly associated with the brain and spinal cord; however, they can occur in any part of the body. Duplex ultrasound can play a pivotal role in both the diagnosis and treatment of AVMs. Methods A high-resolution duplex ultrasound machine along with a high-frequency 15–7 MHz probe was used in transcatheter techniques to treat an AVM. Ultrasound was used to guide arterial and venous access, target specific vessels for treatment, and ultimately reduce radiation exposure. Case Report A 6-year-old female patient was diagnosed with a left foot AVM and hemihypertrophy (Parkes Weber). Despite previous treatments with coil embolization, the patient developed discoloration and swelling of the left second toe and a nonhealing ulceration on the plantar aspect of the left foot. Duplex ultrasound was used to confirm the diagnosis and to aid in the treatment of the AVM. Under ultrasound guidance, catheter access was achieved via the dorsalis pedis artery and advanced distally into a large digital artery directly associated with the AVM. Anhydrous ethanol alcohol was injected through the catheter to treat the arterial inflow of the AVM. Ultrasound was then used to identify cavernous veins on the plantar aspect of the foot and to guide direct ethanol injections into the affected veins. Two weeks after the procedure, ultrasound confirmed 90% reduction in the AVM. The patient's toe discoloration resolved, and the ulceration healed. Conclusion Undiagnosed or poorly managed AVMs of the extremities can result in multiple surgical resections and skin deterioration. Ultrasound imaging of arteriovenous malformations with B-mode, color, and Doppler is essential for the evaluation (staging), treatment, and follow-up of vascular malformations. Ultrasound-guided transcatheter and direct techniques can be used in the treatment and prolonged management of AVMs. The application of ultrasound during these treatments will reduce radiation exposure in these patients.

IntroductıonPatients with complications of deep vein thrombosis (DVT) experience a "life changing event" stemming from their DVT.Constant swelling, pain and discoloration of the involved lower extremity are common.These symptoms result from "venous hypertension secondary to reflux, obstruction, or insufficiency of muscle pumps" (Kearon 2003;Labropoulos 2004).Although the symptoms are well described, patients often have no plan for long term follow up after the acute DVT event.The venous system adjusts to impaired valvular function and obstructed outflow venous channels in the first year following the DVT.A life long commitment to compression hose therapy (Franks, Moffatt et al. 1995) with ambulation and extremity elevation at rest will minimize swelling and pain.Unfortunately, in the acute phase patients often cannot tolerate compression hose but they should be "coached" into compression hose as soon as possible."60% of patients post DVT develop post thrombotic syndrome (Ashrani, Silverstein et al. 2009); fitted, graded compression hose reduce the rate in half" (Kahn ; Brandjes, Buller et al. 1997;Pirard, Bellens et al. 2008).Following a course of anticoagulation and advice for compression hose therapy, DVT patients usually are followed by their primary care provider.Recently there has been increasing interest in more closely following DVT patients.A duplex supervised by a vascular/vein specialist should be performed to assess the "pumping" capacity, available venous channels and valvular competence a few weeks to months after a DVT event (van Ramshorst, van Bemmelen et al. 1994;Caps, Manzo et al. 1995;Salcuni, Fiorentino et al. 1996;Nicolaides 2000).This is especially indicated if patients experience persistent pain and swelling, or if a change occurs in the status of the limb swelling and pain after a long stable period, or if there is continued increase in pigmentation in the pressurized area.Chronic complications, post thrombotic syndrome (PTS), can present clinically depending on the initial severity of the deep venous abnormality, but may also develop abnormalities in the years following a DVT (Bradbury 2010).The overwhelming goal of the treatment of complicated post DVT patients is to preserve skin integrity and to prevent or heal ulceration (Kearon 2004;Bradbury 2010).Pain, infection, and loss of function result in a significant cost to the patient and the community as a whole. AnatomyVeins are substantially different from arteries and exist as a network of thin channels with little intrinsic muscular wall.Large intramuscular veins like the gastrocnemius vein can www.intechopen.com How to referenceIn order to correctly reference this scholarly work, feel free to copy and paste the following:

A long-term, heavy methamphetamine user with life-threatening rectal hemorrhage was treated with transcatheter occlusion of the bleeding arteries. The bleeding blood vessels were vulnerable submucosal arteries, part of the collateral supply to the distal colon. Visceral arteriography demonstrates severe arterial stenotic lesions of the celiac axis, superior mesenteric artery and the inferior mesenteric artery. Collateral vessels were seen with corkscrew morphology similar to that seen with thromboangiitis obliterans.

The term nanotechnology refers to the design, creation, and manipulation of structures on the nanometer scale. Much of the ongoing research and development of nanotechnology is focused on the development of novel methods of imaging and delivery of therapeutics through minimally invasive means. Multifunctional nanoparticles offer great promise for molecular imaging and directing novel therapeutics to molecular targets, which was never before possible. Nanoparticle-based contrast agents have been developed for all imaging modalities. A rapidly increasing number of companies and government funding initiatives have led to a large number of novel agents in various stages of development, ranging from in vitro and in vivo animal studies to clinical use. However, barriers to the delivery of nanoparticles for tumor imaging and therapy exist. Interventional radiologists may circumvent these barriers by using imaging to guide delivery of nanoparticles.

Chronic femoral vein compression (May-Thurner Syndrome) is a known rare cause of deep venous thrombosis. Subsequent angiogenesis and the development of arteriovenous malformation (AVM) in the setting of chronic venous thrombosis is by itself a rare and poorly understood phenomenon. We report a case in which elevated venous pressures resulting from such compression appear to have resulted in the development of a pelvic arteriovenous malformation, which was further complicated by chronic, nonhealing painful lower extremity ulcers, and the development of extensive subcutaneous venous collaterals. Following successful embolization of the pelvic AVM and ablation of veins under the ulcers with laser and sclerotherapy, the patient's ulcers healed and she became pain-free.

Objectives: To describe the angiographic characteristics of pelvic arterial disease in patients with erectile dysfunction (ED) nonresponsive to phosphodiesterase-5 inhibitors (PDE5i) and suspected coronary artery disease (CAD). Background: ED and CAD share common risk factors which can result in endothelial dysfunction, atherosclerosis and flow-limiting stenoses in the coronary and internal pudendal arteries. Methods: Ten patients undergoing cardiac catheterization with ED and a history of unsatisfactory response to a PDE5i were studied. ED severity was quantified using the International Index of ED scoring system. We performed angiography and quantitative vessel analysis of the coronary arteries, bilateral common and internal iliac arteries, and internal pudendal arteries (IPAs). Results: In this pilot observational study, we found a high correlation between the presence of angiographic CAD and IPA disease. The reference IPA diameters at the point of maximal stenosis were 2.7 +/- 0.4 mm (right IPA) and 2.7 +/- 0.5 mm (left IPA). In the nine patients with IPA disease, the average stenosis severity was 55 +/- 31% (right) and 66% +/- 25% (left), and average lesion length was 12.4 +/- 5.2 mm (right) and 10.0 +/- 3.5 mm (left). Four patients had unilateral IPA total occlusions, three of whom had moderate contralateral disease. The majority of IPA stenoses occurred in the mid to distal IPA and appears amenable to percutaneous revascularization. Conclusions: This represents the first angiographic report of CAD correlated with IPA disease in patients with ED. Further investigation is required to determine whether the development of macrovascular disease in the IPA causes ED and whether endovascular treatment is safe and effective in this population. (C) 2010 Wiley-Liss, Inc.

PURPOSE:The placement of a peripherally inserted central catheter (PICC) for neonatal or pediatric patients may at times be technically challenging. We describe an alternate method of placing a PICC in neonatal and pediatric patients with difficult venous access.METHODS:An Amplatz gooseneck snare is advanced from the femoral vein to the basilic vein, as a target for puncture and guidewire positioning, allowing PICC placement. Between 1999 and 2006, 44 PICCs were placed in the manner described. The medical records were reviewed allowing for up to 7 yrs of patient follow-up.RESULTS:Ninety-five percent of PICCs were successfully placed using the snare technique. Two placements were aborted and two procedural complications occurred. The review revealed no evidence of osteomyelitis, nerve injury, deep venous thrombosis or leg length discrepancy.CONCLUSION:This technique offers an alternate method for PICC placement in neonatal and pediatric patients when conventional methods are unsuccessful. The technique avoids the need for intermediate to long-term jugular, subclavian or femoral vein access.

The etiology of arteriovenous (AV) malformations remains incompletely understood. Two cases of acquired AV malformations wholly located within the thrombosed lumen of the femoral and external iliac veins are presented here. The patients presented with symptoms of high venous pressure: pigmented skin and chronic pain. Such AV malformations have been rarely described in the extracranial circulation. The associated pain was successfully treated with catheter-based embolization of the lesions. The induction of the AV malformations in the peripheral circulatory system raises questions regarding the nature of angiogenesis and its possible triggers.

Congenital vascular anomalies of pelvis and lower limb arteries are rare. During embryologic development, the sciatic artery represents the dominant supplier of blood to the lower limb. The external iliac and femoral arteries appear later in the process and take over as the sciatic artery regresses. Failure of the sciatic artery to regress creates a persistent sciatic artery malformation. Failure of the external iliac artery to properly bud may lead to similar vascular malformations. The authors present a patient with atresia of the left external iliac artery with an associated atresia of the left common iliac vein, duplication of the infrarenal inferior vena cava, and absence of the left S1 bony arch. The left-sided single iliac artery supplies both pelvic structures and the lower limb. The "pelvic" external iliac artery may result from embryologic budding at a lower segmental level than the usual fifth lumbar segmental artery. This combination of anomalies suggests an abnormality of segmentation on left at the first sacral level.

As surgeons become more aggressive in treating aneurysms with endovascular techniques, traditional surgical principles of preserving internal iliac arteries and the inferior mesenteric artery have been challenged. A case is presented where the T-Stat device (Spectros Corp, Portola Valley, Calif), an optical real-time sensor approved by United States Food and Drug Administration for measuring colon ischemia, was used as an adjunctive measure to assist in the successful endovascular aneurysm repair in a patient at high risk for colon ischemia.

[Ann Emerg Med. 2008;51:330.] A 32-year-old man presented to the emergency department (ED) for evaluation of continued left thigh pain and swelling. Six weeks before, the patient sustained a stab wound to the superiolateral aspect of his left thigh, and ED evaluation consisted of a normal plain radiograph and wound cleaning. Two weeks after the initial ED visit, the patient developed pain and swelling at the site and was treated by his primary care physician with 2 courses of oral antibiotics for presumed abscess. ED evaluation revealed a 20-cm area of swelling in the proximal thigh (Figure 1), thought initially to be an abscess. Further examination, however, documented a palpable pulse and audible bruit. Doppler ultrasonography revealed a large cystic structure with marked flow signal (Figure 2), consistent with pseudoaneurysm. Computed tomography (CT) angiography confirmed a large pseudoaneurysm and arteriovenous fistula arising from the left profunda femoral artery (Figure 3). Interventional radiology confirmed the injury (Figure 4) and deployed a stent graft over the site of injury. After stent deployment, there was no filling of the pseudoaneurysm (Figure 5). Through 6 weeks of follow-up, the patient recovered well, with resolution of his swelling and no further complications.Figure 2Doppler ultrasonography of mass.View Large Image Figure ViewerDownload Hi-res image Download (PPT)Figure 3Computed tomographic angiography of left lower extremity.View Large Image Figure ViewerDownload Hi-res image Download (PPT)Figure 4Left lower extremity arteriogram.View Large Image Figure ViewerDownload Hi-res image Download (PPT)Figure 5Arteriogram status post stent deployment. Used with permission of James F. Holmes, MD, MPH, Department of Emergency Medicine, University of California-Davis School of Medicine, Sacramento, CA.View Large Image Figure ViewerDownload Hi-res image Download (PPT) Pseudoaneurysms may occur after penetrating injuries or procedures requiring arterial punctures. In this case, the patient was initially considered to have an abscess, according to the history of failing oral antibiotic treatment. In patients with swelling and erythema after penetrating trauma, pseudoaneurysm should be considered before performance of incision and drainage of a presumed abscess because such a procedure may be life threatening in the patient with a pseudoaneurysm. Radiologic studies, including Doppler ultrasonography or CT angiography, will correctly differentiate a pseudoaneurysm from an abscess. Treatments for a pseudoaneurysm are varied and depend on multiple factors.

PURPOSE:To assess the incidence of long- and short-term complications following internal iliac artery (IIA) embolization after blunt pelvic trauma.MATERIALS AND METHODS:One hundred trauma patients with pelvic fractures underwent pelvic angiography from 1994 through 2006. Sixty-seven patients underwent IIA embolization. These patients were retrospectively identified for medical record review. Short- and long-term complications were defined as those occurring at less than or greater than 30 days, respectively. Complications and outcomes were assessed through chart review and, when possible, a standardized questionnaire. Patients who underwent IIA embolization were compared with matched control patients with blunt pelvic trauma who did not undergo pelvic arteriography. Individuals were matched by age, sex, year of admission, and injury scores.RESULTS:There were no significant differences in skin necrosis, sloughing, pelvic perineal infection, or nerve injury between embolized and nonembolized patients within 30 days. There was no significant difference in claudication, skin ulceration, or regional pain at a mean of 18.4 months follow-up. In the long term, buttock, thigh, and perineal paresthesia occur at a significantly higher rate in embolized patients. Skin sloughing in the embolized patient group is an important but rare complication.CONCLUSIONS:IIA embolization is an important means of controlling pelvic arterial hemorrhage. There is no significant increase in the risk of most evaluated long- and short-term complications in trauma patients who underwent IIA embolization versus those who did not. However, IIA embolization is associated with a marginally significantly increased rate of buttock, thigh, or perineal paresthesia.