Single-center experience with the JETi Hydrodynamic Thrombectomy System for acute limb ischemia.

OBJECTIVE: Acute limb ischemia (ALI) remains a vascular emergency with high morbidity and mortality. While the JETi Hydrodynamic Thrombectomy System (Abbott) offers a percutaneous approach to fragment and aspirate the thrombus in patients with arterial occlusions, data on its efficacy and safety are limited. This study reports our early experience using the JETi device to treat ALI at our institution. METHODS: This is a single-center, retrospective review of patients with ALI treated with the JETi device between September 2020 and December 2022. Patients were included if the JETi device was used either as a primary intervention or as an adjunct procedure. The primary endpoint was technical success defined as <50% residual thrombus after intervention. Secondary endpoints included achieving complete resolution of the thrombus on angiogram, acute kidney injury (AKI), major bleeding, 30-day major amputation, and 30-day mortality. RESULTS: A total of 59 JETi procedures for ALI (median age 62 years [interquartile range: 56-71 years]) were performed on 39 male and 20 female patients. The median time from onset of symptoms to hospitalization was 24 hours (interquartile range: 4-168 hours). Rutherford classifications were I (10), IIa (27), IIb (14), and undocumented (8). Etiology of ALI was native vessel thrombosis (27), embolism (16), graft/stent thrombosis (14), and iatrogenic (2). A total of 124 vessels were treated, with an average of 2.1 vessels per procedure. The primary outcome was achieved in 86% (107/124) of the arteries, with 82% (102/124) successfully opened using the JETi device alone without the need for any adjunctive therapy. Complete resolution of the thrombus using JETi was achieved in 81% (101/124) arteries, with or without the use of adjunctive therapy. A total of 6.7% (4/59) patients required a major limb amputation within 30 days despite successful recanalization, and one 30-day mortality was recorded. Complications included distal embolization (5), access site hematoma (2), and AKI (4). No major bleeding, hemolysis-induced AKI, or vessel dissection or perforation was observed. CONCLUSIONS: The JETi device appears to be a safe and effective percutaneous treatment option in the management of ALI. It provides definitive treatment with a high technical success rate of 86% and a good safety profile.

National Trends and Outcomes of Pedal Bypass Surgery.

OBJECTIVE: The technical demands associated with pedal bypass (PB) surgery place it at risk of underutilization and may be limiting its widespread adoption as a valuable revascularization modality. This study aims to evaluate trends in PB performance, assess its outcomes, and compare its results between high- and low-volume centers. METHODS: All patients receiving a PB between 2003 and 2023 were identified in the Vascular Quality Initiative (VQI) infrainguinal bypass (IIB) module. The ratio of PB to total IIB performed was calculated for each year and trended over the study period. Centers performing PB were categorized according to their annual PB volume into tertiles of low-volume centers (LVC, <2 PB/year), medium-volume centers (MVC, 2-4 PB/year), and high-volume centers (HVC, >4 PB/year) for comparison. Patient characteristics and outcomes were compared using the χ2 or Fisher exact test as appropriate for categorical variables and the analysis of variance test or Kruskal-Wallis test as appropriate for continuous variables. Cox regression analysis was used to study the association between center volume and the primary outcomes of primary patency, primary-assisted patency, secondary patency, reintervention, amputation, and major adverse limb events (MALE), defined as the composite outcome of amputation and/or reintervention. RESULTS: A total of 3466 patients received a PB during the study period. The ratio of PB to IIB dropped from 14% to 4% between 2003 and 2023. Primary, primary-assisted, and secondary patency rates were 65%, 76%, and 80%, respectively, and limb salvage rate was 83% at 1 year. Nineteen percent of centers performing IIBs in the VQI did not perform any PBs during the study period. Of the 246 centers performing PBs, 78% were LVC, 15% were MVC, and only 7% were HVC. On Cox regression analysis, HVCs were associated with a lower risk of primary patency loss (hazard ratio [HR], 0.79; 95% confidence interval [CI], 0.66-0.95; P = .010), reintervention (HR, 0.75; 95% CI, 0.60-0.95; P = .016), amputation (HR, 0.77; 95% CI, 0.61-0.98; P = .034), and MALE (HR, 0.78; 95% CI, 0.66-0.93; P = .005) compared with LVCs. No difference in secondary patency between high- and low-volume centers was observed (P = .680). CONCLUSIONS: The utilization of PB operations experienced a four-fold decrease over the past 20 years, despite favorable patency and limb salvage outcomes. Centers with a higher operative volume in PB achieve better outcomes than LVCs, and accordingly, patients with extensive tibioperoneal disease may benefit from evaluation at centers with documented expertise in PB before resorting to an alternative revascularization modality or a major limb amputation.

Locoregional anesthesia is associated with decreased cardiac complications in symptomatic heart failure patients undergoing carotid endarterectomy.

OBJECTIVE: Although the current literature reports no advantage for locoregional anesthesia (LRA) over general anesthesia (GA) in patients undergoing carotid endarterectomy (CEA), there remains a gap in understanding the impact of LRA on individuals with congestive heart failure (CHF). This study aims to assess whether the choice of anesthesia influences the rates of perioperative complications within this patient population. METHODS: Using the Vascular Quality Initiative CEA module, all patients undergoing CEA between 2013 and 2023 were identified. The subset of patients with CHF was included, and patients were divided based on the type of anesthesia received. Patient characteristics and outcomes were compared using the χ2 or Fischer's exact test as appropriate for categorical variables and the independent t test or Mann-Whitney U test as appropriate for continuous variables. A sensitivity analysis was performed based on the symptomatic status of CHF, and the association between anesthesia modality and postoperative outcomes was studied using multivariable logistic regression analysis. The primary outcomes of this study included perioperative stroke, myocardial infarction (MI), acute HF, and the combination of MI and acute HF defined as major cardiac complications. RESULTS: A total of 21,292 patients (19,730 receiving GA, 1562 receiving LRA) with a diagnosis of CHF undergoing CEA were identified. On multivariable logistic regression analysis, LRA was independently associated with lower MI (odds ratio [OR]; 0.35; 95% confidence interval [CI], 0.13-0.96), acute HF (OR, 0.27; 95% CI, 0.09-0.87), major cardiac complications (OR, 0.30; 95% CI, 0.13-0.67), hemodynamic instability (OR, 0.64; 95% CI, 0.53-0.78), cranial nerve injury (OR, 0.40; 95% CI, 0.19-0.81), shunt use (OR, 0.25; 95% CI, 0.20-0.31), and neuromonitoring device use (OR, 0.20; 95% CI, 0.17-0.24) compared with GA in patients with symptomatic CHF. No difference in MI, acute HF, and major cardiac complications was seen in patients with asymptomatic CHF. CONCLUSIONS: CEA can be performed safely in patients with CHF. Using LRA is associated with a decreased incidence of perioperative cardiac complications in patients with symptomatic HF undergoing CEA.

Quality of Life Predictors in Patients with Acute Lower Limb Ischemia Quality of Life in Acute Limb Ischemia.

BACKGROUND: While existing literature has established factors associated with improved health-related quality of life (HRQOL) in patients with chronic limb-threatening ischemia, similar work has not been done in individuals with acute lower limb ischemia (ALLI). This study aims to identify the factors associated with HRQOL in patients presenting with ALLI. METHODS: Using a prospectively collected registry, all patients who received treatment for ALLI between May 2016 and July 2023 at a quaternary medical center were identified and invited to complete two HRQOL questionnaires: the Vascular Quality of Life Questionnaire-6 (VascuQoL-6) and the EuroQol 5-Dimension 5-Level (EQ-5D-5L). Simple linear regression followed by multivariate analysis using multiple linear regression were used to determine the patient variables independently associated with HRQOL. RESULTS: Of the 216 eligible patients treated for ALLI during the study period, 47 (20%) of patients with a mean age of 58 ± 10 years completed the HRQOL questionnaires. Questionnaires were completed at a median time of 16.5 months after the episode of ALLI. On multiple linear regression, higher age was associated with higher VascuQoL-6 (P = 0.037) and EQ-5D-5L (P = 0.041) scores, while hypertension and nonambulatory status were significant predictors of lower VascuQoL-6 (P = 0.006, P = 0.013) and EQ-5D-5L (P = 0.009, P = 0.026) scores. Any ambulation had a significantly higher HRQOL compared to nonambulatory status, but no significant HRQOL difference was observed between patients with any type of ambulation (unhindered ambulation, ambulation with pain, and ambulation using a prosthesis). CONCLUSIONS: This study demonstrates that the ability to ambulate after ALLI, and not amputation per se, is an important predictor of HRQOL. As such, early rehabilitation strategies should be a focus of post-ALLI care. Further exploration of factors that shape HRQOL after ALLI is needed.

Drug-Eluting Stents are Associated with Superior Mid-Term Outcomes for the Treatment of Infrainguinal Bypass Graft Stenoses.

BACKGROUND: We previously demonstrated that everolimus drug-eluting stents (eDES) have reasonable short-term patency for the treatment of infrainguinal bypass stenoses. The aim of this study is to compare mid-term outcomes of eDES, plain balloon angioplasty (PTA), percutaneous cutting balloon (PCB), and drug-coated balloon (DCB) interventions for failing infrainguinal bypasses. METHODS: We conducted a retrospective review of patients with infrainguinal bypass stenoses treated by endovascular intervention (August 2010-August 2021). The primary outcome was primary patency (PP). Secondary outcomes were primary-assisted patency (PAP), secondary patency (SP), limb salvage (LS), and mortality. Outcomes were compared by treatment using Kaplan-Meier curves with log-rank tests and Cox proportional hazards models adjusting for baseline differences between groups. RESULTS: Seventy-two consecutive patients with 152 discrete infrainguinal bypass graft stenoses were identified. Mean age was 65.1 ± 10.6 years, 55.6% were male, and 48.6% were Black. In total, 81.9% of patients were originally treated for chronic limb-threatening ischemia, and 57.2% of distal anastomoses were to tibial or pedal targets. Of 152 lesions, 44.1% (n = 67) were treated with PTA, 17.8% (n = 27) with PCB, 20.4% (n = 31) with DCB, and 17.8% (n = 27) with eDES. Median follow-up was 28.5 months (interquartile range 11.5-51.9). There was no difference in bypass configuration, conduit choice, or stenosis location (proximal anastomosis, mid-bypass, distal anastomosis) between groups. At 24 months postintervention, PP was significantly better for eDES (72.9%, 95% confidence interval [CI] 49.8-85.6), followed by PCB (55.9%, 95% CI 34.2-72.9), PTA (34.4%, 95% CI 21.7-47.4), and DCB (33.6%, 95% CI 14.5-53.9) (P = 0.03). PAP, LS, and mortality did not significantly differ between modalities (P > 0.05). After risk adjustment, eDES was associated with the lowest risk of PP loss (hazard ratio versus PTA 0.15, 95% CI 0.05-0.47). CONCLUSIONS: eDES is associated with superior 24-month patency rates compared to other endovascular technologies, and should be considered a primary therapy modality for the treatment of infrainguinal bypass graft stenoses.

Outcome benefit of arterial duplex stent imaging after superficial femoral artery stent implantation.

OBJECTIVE: In-stent stenosis is a frequent complication of superficial femoral artery (SFA) endovascular intervention and can lead to stent occlusion or symptom recurrence. Arterial duplex stent imaging (ADSI) can be used in the surveillance for recurrent stenosis; however, its uniform application is controversial. In this study, we aimed to determine, in patients undergoing SFA stent implantation, whether surveillance with ADSI yielded a better outcome than in those with only ankle-brachial index (ABI) follow-up. METHODS: We performed a retrospective analysis of all patients undergoing SFA stent implantation for occlusive disease at a tertiary care referral center between 2009 and 2016. The patients were divided into those with ADSI and those with ABI follow-up only. Life-table analysis comparing stent patency, major adverse limb events (MALEs), limb salvage, and mortality between groups was performed. RESULTS: There were 248 patients with SFA stent implantation included, 160 in the ADSI group and 88 in the ABI group. Groups were homogeneous in clinical indications of claudication and critical limb-threatening ischemia (for ADSI, 39% and 61%; for ABI, 38% and 62%; P = .982) and TransAtlantic Inter-Society Consensus class A, B, C, and D lesions (for ADSI, 17%, 45%, 16%, and 22%; for ABI, 21%, 43%, 16%, and 20%; P = .874). Primary patency was similar between groups at 12, 36, and 56 months (ADSI, 65%, 43%, and 32%; ABI, 69%, 34%, and 34%; P = .770), whereas ADSI patients showed an improved assisted primary patency (84%, 68%, and 54%) vs ABI patients (76%, 38%, and 38%; P = .008) and secondary patency. There was greater freedom from MALEs in the ADSI group (91%, 76%, and 64%) vs the ABI group (79%, 46%, and 46%; P < .001) at 12, 36, and 56 months of follow-up. ADSI patients were more likely to undergo an endovascular procedure as their initial post-SFA stent implantation intervention (P = .001), whereas ABI patients were more likely to undergo an amputation (P < .001). CONCLUSIONS: In SFA stent implantation, patients with ADSI follow-up demonstrate an advantage in assisted primary patency and secondary patency and are more likely to undergo an endovascular reintervention. These factors are likely to have effected a decrease in MALEs, indicating the benefit of a more universal adoption of post-SFA stent implantation follow-up ADSI.

Analysis of Outpatient Telemedicine Reimbursement in an Integrated Healthcare System.

BACKGROUND: Current reimbursement policy surrounding telemedicine has been cited as a barrier for the adaptation of this care model. The objective of this study is to analyze the reimbursement figures for outpatient telemedicine consultation in vascular surgery. METHODS: Patients first underwent synchronous telemedicine visits after receiving point-of-care ultrasound at one of 3 satellite locations of Henry Ford Health System in Michigan. Visit types included new, return, and postoperative patients. Reimbursement information related to payor, adjustment, denial, paid and outstanding balances were recorded for each telemedicine visit. Then, using an enterprise data warehouse, a retrospective analysis was performed for the aforementioned telemedicine visits. The data were analyzed to determine the outcome of total billed charges, number of denied claims, reimbursement per payor, reimbursement per patient, and out-of-pocket costs to the patients. RESULTS: Among 184 virtual clinical encounters, the payors included Aetna US Healthcare, Blue Advantage, Blue Cross Blue Shield, Cofinity Plan, Health Alliance Plan, HAP Medicare Advantage, Humana Medicare Advantage, Medicaid, Medicare, Molina Medicaid HMO, United Healthcare, Blue Care Network, Aetna Better Health of Michigan, Priority Health, and self-pay. Among the 15 payors, reimbursement ranged from 0% to 67% of the total charges billed. Among the 184 virtual visits, a grand total of $22,145 was collected or an average of $120.35 per virtual encounter. The breakdown of charges billed was 40% adjusted, 41% paid by insurance, 10% paid by patient, and 13% denied. There were 27 total denials (15%). Denial of payment included telehealth and nontelehealth reasons, citing noncovered charges, payment included for other prior services, new patient quality not met, and not covered by payor. The average out-of-pocket cost to patients was $12.59 per visit. CONCLUSIONS: These reimbursement data validate the economic potential within this new platform of healthcare delivery. As our experience with the business model grows, we expect to see an increase in reimbursement from private payors and acceptance from patients. Within a tertiary care system, telemedicine for chronic vascular disease has proven to be a viable means to reach a broader population base, and without significant cost to the patients.

Retrograde open celiac stenting for ischemic hepatitis after pancreaticoduodenectomy.

A 74-year-old man with pancreatic cancer had undergone pancreaticoduodenectomy and subsequently developed ischemic hepatitis secondary to high-grade celiac artery stenosis. Celiac antegrade stenting via brachial artery access was unsuccessful, and open antegrade bypass would have required takedown of the pancreatic and/or biliary anastomoses for adequate exposure. Retrograde open celiac stenting was, therefore, successfully performed via the gastroduodenal artery stump. His ischemic hepatitis resolved, and he was ultimately discharged with dual antiplatelet therapy. Computed tomography angiography at 6 months demonstrated a widely patent celiac stent. Retrograde open celiac stenting via the gastroduodenal artery stump is an alternative to open bypass for celiac revascularization not amenable to percutaneous antegrade stenting in patients who have undergone pancreaticoduodenectomy.

Evaluation and Management of Neurogenic Thoracic Outlet Syndrome with an Overview of Surgical Approaches: A Comprehensive Review.

Neurogenic thoracic outlet syndrome (NTOS) represents a disorder believed to involve compression of one or more neurovascular elements as they exit the thoracic outlet. This comprehensive literature review will focus on the occurrence, classification, etiology, clinical presentation, diagnostic measures, and both nonoperative and operative therapies for NTOS. NTOS represents the most common subtype of thoracic outlet syndrome and can significantly impair quality of life. Botulinum toxin injection into the anterior scalene muscle, or even the middle scalene or pectoralis minor muscles, can reduce the symptoms of this syndrome. The best available evidence for botulinum toxin therapy to the cervicothoracic muscles supports the value of this treatment for reducing pain in the affected extremity, and for an approximate duration of 2 months or more. Surgical approaches and newer minimally invasive surgical approaches offer high rates of improvement in select centers.

Progressive stenosis of a popliteal artery stent graft by laminated thrombus.

We present a case of failed popliteal artery aneurysm repair using a Viabahn stent graft (W. L. Gore & Associates, Flagstaff, Ariz) due to laminated thrombus formation. A 75-year-old man presented with a symptomatic popliteal artery aneurysm. He was treated with a Viabahn stent graft. On follow-up, the patient complained of lower extremity claudication, and duplex ultrasound examination showed a focal intrastent stenosis. A computed tomography scan showed a significant stenosis within the stent graft, at the level of the knee joint creases. The patient underwent superficial femoral artery to distal popliteal surgery. This case report aims to expand on the mechanism of stent graft failure in popliteal aneurysms.

Early clinical experience using telemedicine for the management of patients with varicose vein disease.

INTRODUCTION: The use of telemedicine services may be effective in the perioperative management of patients with varicose veins. METHODS: Over a seven-month period, patients with varicose veins were evaluated in the virtual clinic via two-way secure videoconferencing or the traditional clinic by the same physician provider. Data sources included institutional Vascular Quality Initiative registry and patient satisfaction surveys. RESULTS: Among a total of 121 patients with varicose veins who underwent endovenous catheter ablation of the saphenous vein, 20 patients (16.5%) chose the telemedicine clinic (Group A) and 101 patients (83.5%) chose the traditional clinic (Group B) for their perioperative management. Comparing Group A and Group B, the mean age was 59.2 ± 12.1 versus 59.6 ± 13.0, respectively ( p = 0.944); women were 75% versus 73.3%, respectively ( p = 0.872); African Americans comprised 5% versus 22.8%, while Caucasians comprised 95% versus 63%, respectively ( p = 0.049). Half of the telemedicine patients had multiple virtual visits for a total of 31 virtual encounters. Among telemedicine patients using SurveyMonkey®, 29 telemedicine encounters (93.5%) reported that their virtual visit is "Yes, definitely" or "Yes, somewhat" more convenient over traditional methods. All patients answered that they were able to communicate clearly with the provider, able to have their questions answered, and able to clearly hear and see the provider via telemedicine methods. DISCUSSION: Telemedicine services enable another means to deliver high-quality care for patients with venous disease in a safe and coordinated manner. Patients with varicose veins are highly satisfied with the use of telehealth services over the traditional healthcare delivery model.

Men present with higher clinical class of chronic venous disease before endovenous catheter ablation.

BACKGROUND: Risk factors for chronic venous disease (CVD) have been widely reported in population health management. However, predisposing factors associated with patients treated for advanced stages of CVD have yet to be established. We examined the demographics and risk factors associated with advanced clinical presentation of CVD for patients referred for vein ablation. METHODS: Retrospective analysis of our institutional Vascular Quality Initiative Varicose Vein Registry included endovenous laser treatment and radiofrequency ablation procedures at our tertiary institution, community hospital, and outpatient vein clinic between January 2015 and December 2016. All incompetent truncal veins were divided into two groups based on the Clinical, Etiology, Anatomy, and Pathophysiology clinical class of CVD: mild-moderate (C1-C3) and severe (C4-C6). The two groups were compared in terms of their demographics and medical comorbidities using univariate and multivariate analysis. Data analysis was conducted on SPSS 22.0 (IBM Corp, Armonk, NY). RESULTS: During the study period, a total of 650 incompetent truncal veins were ablated. The mean age of patients was 58 years, and 73% were female. Severe CVD composed 21% of the cohort. Male sex was a risk for advanced CVD (odds ratio, 2.6; P < .001). Older age was also associated with severe CVD; the average age was 63 years for patients with advanced stage CVD vs 56 years for mild to moderate CVD (P < .001). Race, diabetes, body mass index, number of pregnancies, congestive heart failure, history of venous thromboembolism, current anticoagulation, and history of smoking or current smoking status did not affect the severity of CVD. CONCLUSIONS: Among patients treated with vein ablation for superficial venous insufficiency, older age and male sex were associated with increased severity of advanced CVD. Despite the higher incidence of varicose veins among women, men are more likely to have clinically advanced CVD when they present for truncal vein ablation.