Ten Years After Arterial Bypass Surgery for Claudication: Venous Bypass is the Primary Procedure for TASC C and D Lesions

Indications for a "Surgery-First" Approach for the Treatment of Lower Extremity Arterial Disease

BACKGROUND

In recent years, there has been a tendency toward an "endovascular-first" approach for the treatment for femoropopliteal arterial disease. The purpose of this study is to determine if there are patients that are better served with an initial femoropopliteal bypass (FPB) rather than an endovascular attempt at revascularization.

METHODS

A retrospective analysis of all patients undergoing FPB between June 2006 - December 2014 was performed. Our primary endpoint was primary graft patency, defined as patent using ultrasound or angiography without secondary intervention. Patients with <1-year follow-up were excluded. Univariate analysis of factors significant for 5-year patency was performed using χ2 tests for binary variables. A binary logistic regression analysis incorporating all factors identified as significant by univariate analysis was used to identify independent risk factors for 5-year patency. Event-free graft survival was evaluated using Kaplan-Meier models.

RESULTS

We identified 241 patients undergoing FPB on 272 limbs. FPB indication was disabling claudication in 95 limbs, chronic limb-threatening ischemia (CLTI) in 148, and popliteal aneurysm in 29. In total, 134 FPB were saphenous vein grafts (SVG), 126 were prosthetic grafts, 8 were arm vein grafts, and 4 were cadaveric/xenografts. There were 97 bypasses with primary patency at 5 or more years of follow-up. Grafts patent at 5 years by Kaplan-Meier analysis were more likely to have been performed for claudication or popliteal aneurysm (63% 5-year patency) as compared with CLTI (38%, P < 0.001). Statistically significant predictors (using log rank test) of patency over time were use of SVG (P = 0.015), surgical indication of claudication or popliteal aneurysm (P < 0.001), Caucasian race (P = 0.019) and no history of COPD (P = 0.026). Multivariable regression analysis confirmed these 4 factors as significant independent predictors of 5-year patency. Of note, there was no statistical correlation between FPB configuration (above or below knee anastomosis, in-situ versus reversed saphenous vein) and 5-year patency. There were 40 FPBs in Caucasian patients without a history of COPD receiving SVG for claudication or popliteal aneurysm that had a 92% estimated 5-year patency by Kaplan-Meier survival analysis.

CONCLUSIONS

Long-term primary patency that was substantial enough to consider open surgery as a first intervention was demonstrated in Caucasian patients without COPD, having good quality saphenous vein, and who underwent FPB for claudication or popliteal artery aneurysm.

[Surgical therapy of peripheral arterial occlusive disease]

The surgical treatment of peripheral arterial occlusive disease focuses not only on the direct restoration of the femoral bifurcation but also on the peripheral bypass, especially in the case of chronic amputation-threatening ischemia. Comprehensive imaging is indispensable for planning surgical therapy. The local reconstruction of the femoral bifurcation offers very good long-term results and can be easily combined with endovascular methods. The peripheral bypass is the central pillar of surgical therapy, especially in CLTI. Autologous vein should always be the first-choice material. It delivers good long-term results in every position. Prosthetic material is only used if there is no vein and should be combined with autologous veins in the crural and pedal area if possible. The technical limit for a bypass system lies in the pedal arteries and their branches. These methods can be combined with upstream and downstream endovascular interventions in the form of a hybrid intervention. Surgical and endovascular interventions are to be considered as complementary.

Quantifying the risk-adjusted hospital costs of postoperative complications after lower extremity bypass in patients with claudication

OBJECTIVE

Increasing evidence has shown that the risks associated with surgical revascularization for intermittent claudication outweigh the benefits. The aim of our study was to quantify the cost of care associated with perioperative complications after elective lower extremity bypass (LEB) in patients presenting with intermittent claudication.

METHODS

All patients undergoing first-time LEB for claudication in the Healthcare Database (2009-2015) were included. The primary outcome was in-hospital postoperative complications, including major adverse limb events (MALE), major adverse cardiac events (MACE), acute kidney injury, and wound complications. The overall crude hospital costs are reported, and a generalized linear model with log link and inverse Gaussian distribution was used to calculate the predicted hospital costs for specific complications.

RESULTS

Overall, 7154 patients had undergone elective LEB for claudication during the study period. The median age was 66 years (interquartile range, 59-73 years), 67.5% were male, and 75.3% were white. Two thirds of patients (61.2%) had Medicare insurance, followed by private insurance (26.9%), Medicaid (7.7%), and other insurance (4.2%). In-hospital complications occurred in 8.5% of patients, including acute kidney injury in 3.0%, MALE in 2.8%, wound complications in 2.3%, and MACE in 1.0%. The overall median crude hospital cost was $11,783 (interquartile range, $8911-$15,767) per patient. The incremental increase in cost associated with a postoperative complication was significant, ranging from $6183 (95% confidence interval, $4604-$7762) for MALE to $10,485 (95% confidence interval, $6529-$14,441) for MACE after risk adjustment.

CONCLUSIONS

Postoperative complications after elective LEB for claudication are not uncommon and increase the in-hospital costs by 46% to 78% depending on the complication. Surgical revascularization for claudication should be used sparingly in carefully selected patients.

Intermittent Claudication and Asymptomatic Peripheral Arterial Disease

BACKGROUND

The conservative treatment of peripheral arterial disease (PAD), as recommended in current guidelines, encompasses measures such as lifestyle modification and risk-factor management. In addition, in patients with vasogenic intermittent claudication (IC), it is recommended that patients first be given drugs to improve perfusion and undergo supervised gait training. Revascularization is not recommended for asymptomatic persons, but it is considered mandatory for patients with critical ischemia. In this article on conservative and revascularizing treatment strategies for IC, we address the following questions: whether all treatment options are available, how effective they are, and whether the reality of treatment for IC in Germany corresponds to what is recommended in the guidelines.

METHODS

In 2014, the German Society for Angiology carried out a comprehensive literature search in order to prepare a new version of the S3 guideline on PAD. This literature search was updated up to 2018, with identical methods, for the present review.

RESULTS

The benefit of lifestyle modification and risk factor treatment is supported by high-level evidence ( evidence level I, recommendation grade A ). The distance patients are able to walk without pain is increased by drug therapy as well (evidence level IIb), but the therapeutic effect is only moderate. Supervised exercise training (SET), though supported by high-level evidence (I, A), is of limited efficacy, availability, and applicability, and patient compliance with it is also limited. In patients with IC, revascularization leads to complete relief of symptoms more rapidly than gait training, and its long-term benefit is steadily improving owing to advances in medical technology. A combination of arterial revascularization and gait training yields the best results. In a clinical trial, patients with IC who underwent combined therapy increased the distance they could walk without pain by 954 m in six months, compared to 407 m in a group that underwent gait training alone.

CONCLUSION

In the treatment of vasogenic IC, SET and drugs to increase perfusion are now giving way to revascularization, which is more effective. As far as can be determined, SET is not currently implemented at all in the German health care system. It would be desirable for SET to be more available and more widely used, both to sustain the benefit of revascularization over the long term and to lower the general cardiovascular risk.

2016 AHA/ACC Guideline on the Management of Patients With Lower Extremity Peripheral Artery Disease: Executive Summary: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines

Since 1980, the American College of Cardiology (ACC) and American Heart Association (AHA) have translated scientific evidence into clinical practice guidelines with recommendations to improve cardiovascular health. These guidelines, based on systematic methods to evaluate and classify evidence, provide a cornerstone of quality cardiovascular care.

In response to reports from the Institute of Medicine1 ,2 and a mandate to evaluate new knowledge and maintain relevance at the point of care, the ACC/AHA Task Force on Clinical Practice Guidelines (Task Force) modified its methodology.3 –5 The relationships among guidelines, data standards, appropriate use criteria, and performance measures are addressed elsewhere.5

2016 AHA/ACC Guideline on the Management of Patients With Lower Extremity Peripheral Artery Disease: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines

Since 1980, the American College of Cardiology (ACC) and American Heart Association (AHA) have translated scientific evidence into clinical practice guidelines with recommendations to improve cardiovascular health. These guidelines, based on systematic methods to evaluate and classify evidence, provide a cornerstone of quality cardiovascular care.

In response to reports from the Institute of Medicine1 ,2 and a mandate to evaluate new knowledge and maintain relevance at the point of care, the ACC/AHA Task Force on Clinical Practice Guidelines (Task Force) modified its methodology.3 –5 The relationships among guidelines, data standards, appropriate use criteria, and performance measures are addressed elsewhere.5

Serial optical coherence tomography assessments at 2- and 4-month follow-up after paclitaxel-eluting stenting of the superficial femoral artery

A 71-year-old man underwent endovascular therapy (EVT) with a paclitaxel-eluting stent in superficial femoral artery (SFA). Optical coherence tomography (OCT) of SFA at 2 months after EVT revealed that several struts were not covered with neointima. Moreover, some mural thrombi were detected within the stent. Although OCT revealed that the frequency of stent strut coverage was improved at the 4-month follow-up, uncovered stent strut still remained and some mural thrombi were observed within the stent even at 4 months after EVT. This is the first report to demonstrate the vascular response after paclitaxel-eluting stent placement for the lesion using serial OCT examinations.

Current treatment methods for long occlusions of the femoropopliteal segment in patients with intermittent claudication: Minireview

Backround. Intermittent claudication is a classic symptom of peripheral arterial disease. It is mainly treated conservatively but if this fails, a form of revascularization is indicated. The revascularization in chronic occlusion of femoropopliteal region is currently performed by two basic methods: the standard method of surgical bypass and the newer miniinvasive alternative represented by the endovascular method. The treatment of patients with solely claudication and long occlusion of femoropopliteal region remains controversial. The aim of this minireview was to determine whether surgical bypass is still the best method of choice in a time of endovascular techniques.

METHODS

A MEDLINE search for original and review articles using key terms, intermittent claudication and long femoropopliteal oclusion.

RESULTS AND CONCLUSION

No ideal treatment for long occlusions of the femoropopliteal segment has been established to date. It is clear that the role of endovascular techniques in the treatment of SFA occlusions is increasing. It remains that, lower risk patients with claudication should be examined to assess the quality of veins suitable for revascularization and bypass should be selected as the first method of choice.