The role of emergency presentation and revascularization in aneurysms of the peripancreatic arteries secondary to celiac trunk or superior mesenteric artery occlusion.

OBJECTIVE: The goal of this study was to analyze our 10-year experience in the treatment of aneurysms of the collateral circulation secondary to steno-occlusions of the celiac trunk (CT) or superior mesenteric artery (SMA). METHODS: In the last 10 years, 32 celiac-mesenteric aneurysms were detected (25 true aneurysms and seven pseudoaneurysms) in 25 patients with steno-occlusion of the CT or SMA. All cases were diagnosed and treated at our center, with either surgical or endovascular approach. As open surgery, we performed aneurysmectomy and revascularization; as endovascular treatment we performed both the embolization (or graft exclusion) of the aneurysm sac, and embolization of afferent and efferent arteries. RESULTS: Sixteen patients (64%) underwent endovascular treatment, accounting for 66% of aneurysms (21/32). Six patients (24%) and seven associated aneurysms (22%) underwent open surgery. Three asymptomatic patients (12%), representing a total of four aneurysms (12%), were not treated. For endovascular procedures, the technical success rate was 90%, with a 56% clinical success rate. For open surgery, clinical and technical success were achieved in five patients (83%) and six procedures (86%), respectively. Sixty-eight percent of patients (17/25) were treated in an emergency setting, using either endovascular (88%) or open (12%) approaches. Although technical success was achieved in more than 85% of these procedures for both approaches, clinical success was reached less frequently among patients with an acute presentation (P = .041). Regardless of the type of treatment, CT or SMA revascularization during the first procedure did not show an increased rate of clinical success (P = .531). However, we reported four cases of visceral ischemia after an endovascular approach without revascularization, with three open surgical corrections required. The mean follow-up was 41 months (range, 0-136 months). CONCLUSIONS: Neither of the approaches described qualifies as a standard optimal choice. We suggest a tailored therapeutic approach based on the clinical condition at the time of diagnosis and specific vascular anatomy.

Risk Scoring Systems to Predict Long-Term Mortality After Carotid Endarterectomy in Asymptomatic Patients: A Systematic Review.

The present review was conducted to describe current published risk scoring systems to predict late mortality after carotid endarterectomy (CEA). The aim of the study is to identify simple, clinical, and reproducible tools to predict life expectancy in patients with asymptomatic carotid artery stenosis candidates to CEA and therefore which patients may benefit from surgery, reaching the goal of life expectancy >3 to 5 years, recommended by guidelines. Advantages, disadvantages, feasibility, simplicity, and reproducibility of each selected score were analyzed. Rigorous statistical analysis and validation of the score are essential components to produce a calibrated and usable score. Future studies should address the impact of using these tools in CEA candidates for asymptomatic disease.

Development and validation of a score to predict life expectancy after carotid endarterectomy in asymptomatic patients.

OBJECTIVE: Recent improvement of best medical treatment for carotid stenosis has sparked a debate on the role of surgery-identification of patients who may benefit from carotid endarterectomy (CEA) is crucial to avoid overtreatment. An expected 5-year postoperative survival is one of the main selection criteria. The aim of this study was the development of a score for predicting survival of asymptomatic patients after CEA. METHODS: Our score was derived from a retrospective analysis of 648 consecutive asymptomatic patients from a single hospital. External validation of the score was then performed on a second cohort of 334 asymptomatic patients from two different hospitals in the same area. Factors associated with reduced postoperative survival within the derivation cohort (DC) were identified and tested for statistical significance. Each selected factor was assigned a score proportional to its ß coefficient: 1 point for chronic obstructive pulmonary disease, diabetes mellitus, coronary artery disease, and lack of statin treatment; 4 points for age 70 to 79 years and creatinine concentration ≥1.5 mg/dL; 8 points for age ≥80 years and dialysis. The DC was divided into four groups based on individual scores: group 1, 0 to 3 points; group 2, 4 to 7 points; group 3, 8 to 11 points; and group 4, ≥12 points. Group-specific survival curves were calculated. The validation cohort (VC) was stratified according to the score. Survival of each of the four risk groups within the VC was compared with its analogue from the DC. RESULTS: Median follow-up of the DC and VC was, respectively, 56 and 65 months. Intercohort comparison of 5-year survival was 84.7% ± 1.7% vs 85.2% ± 2% (P = .41). Group-specific 5-year survival within the DC was 97% ± 1.5% (group 1), 88.4% ± 2.2% (group 2), 69.6% ± 4.7% (group 3), and 48.1% ± 13.5% (group 4; P < .0001). Five-year survival within the VC was 95.5% ± 2% (group 1), 89.5% ± 2.7% (group 2), 65% ± 6.1% (group 3), and 44.8% ± 14.1% (group 4; P < .0001). Intercohort comparison of group-specific survival curves showed close similarity throughout the groups. CONCLUSIONS: Our score is a simple clinical tool that allows a quick and reliable prediction of survival in asymptomatic patients who are candidates for CEA. This selective approach is crucial to avoid unnecessary surgery on patients who are less likely to survive long enough to experience the benefits of this preventive procedure.

Comparison of posterior and medial approaches for popliteal artery aneurysms.

BACKGROUND: Long-term results of the posterior approach (PA) for the treatment of popliteal artery aneurysms are lacking in the literature. We reviewed our experience during a 13-year period in patients with popliteal artery aneurysms, comparing those treated through a PA with those operated on through a standard medial approach (MA). METHODS: Clinical data of all patients treated between February 1998 and October 2011 were retrospectively reviewed and outcomes analyzed. The Kaplan-Meier method was used to estimate survival, and χ(2), Wilcoxon, and log-rank tests were used for analysis. RESULTS: A total of 77 aneurysms were treated in 65 patients (64 men). Mean age was 68 years (range, 48-96 years). Thirty-six aneurysms were asymptomatic (47%). Mean sac diameter was 2.8 ± 1 cm. A PA was used in 43 PAAs (55%) and an MA in 34. The PA and MA patients differed significantly in age (median being older), smoking history (more frequent in PA), and renal insufficiency and cerebrovascular disease (higher for MA). In 42 cases the aneurysm was symptomatic (54.5%) for chronic limb ischemia, with intermittent claudication in 18 patients, acute ischemia in 17, blue toe syndrome in 3, compression on adjacent structures in 3, and rupture with severe acute pain in 1. All PA repairs consisted of aneurysmectomy with an interposition graft with end-to-end anastomoses; among MA repairs, 22 interposition grafts and 12 bypasses were performed. A polytetrafluoroethylene graft was used in 54 cases. Five patients had an early thrombosis (two PA and three MA). No perioperative deaths occurred. Two patients sustained a permanent (PA) and a temporary (MA) peroneal nerve lesion. There were no early amputations. The median in-hospital stay was longer for MA (10 days) than for PA (7 days; P = .02). Median follow-up was 58.8 months (range, 5 days-166 months). Nine patients died during follow-up of unrelated causes. The 5-year primary and secondary patency rates were 59.6% ± 8.6% and 96.5% ± 3.4%, respectively, for PA, and 65.1% ± 11.1% and 79.4% ± 9.7%, respectively, for MA (P = .53 for primary patency rate and P = .22 for secondary patency rate). Limb salvage was 100% at 5 years and 93.3% ± 6.4% at 10 years for PA and 91.1% ± 6.3% at both time points for MA (P = .28). CONCLUSIONS: PA and MA both achieved satisfactory results in primary and secondary patency rates, as well as limb salvage, during long-term follow-up. The differences between the two groups were small and not statistically significant. PA was burdened by similar postoperative nerve and wound complications compared with MA. The in-hospital stay after PA was significantly lower.

Use of ultrasound debridement as an adjunctive tool for treating infected prosthetic vascular grafts in the lower extremities.

BACKGROUND: To evaluate the role of an ultrasound (US) debridement system to treat conservatively patients with poor medical conditions who presented with infection of a prosthetic vascular graft in the lower extremities. METHODS: Data of all patients who underwent debridement of the grafts and/or surrounding tissue using an ultrasonic generator (Genera, Italia Medica, Milan, Italy) were recorded and retrospectively reviewed. Based on cultures, patients received specific antibiotic therapy. Partial graft removal, sartorius muscle flap rotation, or negative pressure wound treatment (NPWT) was selectively used. Early and late morbidity and mortality and recurrence were analyzed. RESULTS: Thirteen patients (median age, 72 years; range, 57-92 years; 8 men) were treated (12 Szilagyi grade III and 1 grade II infections) with US debridement without removing the graft (8 cases) or with partial excision and "in situ" reconstruction with a silver prosthetic graft (5 cases). Sartorius flap rotation was associated in 6 and NPWT in 1 case. One patient died perioperatively because of pulmonary edema because of sepsis secondary to treatment failure. Estimated freedom from reinfection was 90.9 ± 9% at 6 months and 77.9 ± 14% at 1 and 2 years. Estimated limb survival was 78.7 ± 13% at 6 months, 65.6 ± 16% at 1 year, and 52.5 ± 18% at 2 years. CONCLUSIONS: US debridement proved to be a valuable aid in the treatment of patients with infected grafts and poor medical conditions. Used in conjunction with antibiotics, it allowed us to be more conservative without compromising the chance of success.

Outcomes of urgent carotid endarterectomy for stable and unstable acute neurologic deficits.

OBJECTIVE: The aim of the study was to assess the outcomes of carotid endarterectomy (CEA) performed in an urgent setting on acutely symptomatic patients selected through a very simple protocol. METHODS: From January 2002 to January 2012, 193 symptomatic patients underwent CEA. Of these, 90 presented with acute symptoms, and after a congruous carotid stenosis was identified, underwent urgent operations (group 1): 27 patients had transient ischemic attack (group 1A), 52 patients had mild to moderate stroke (group 1B), and 11 patients had stroke in evolution (group 1C). The remaining 103 patients with a nonrecent neurologic deficit were treated by elective surgery in the same period (group 2). End points were 30-day neurologic morbidity and mortality. RESULTS: The median delay of urgent CEA (U-CEA) from deficit onset was 48 hours (interquartile range, 13-117 hours). Groups 1 and 2 were comparable in demographics. Acute patients showed a higher rate of stroke at presentation (70% vs 37%; P = .001) and of history of coronary artery disease (30% vs 13.5%; P = .007). Acute patients sustained six postoperative strokes (6.6%). Neurologic outcomes were correlated to clinical presentation: no strokes occurred in group 1A patients, and 5.8% group 1B patients and 27.3% group 1C patients had postoperative stroke (P < .01). Postoperative mortality was 4.4% for U-CEA: one fatal myocardial infarction, one intracranial hemorrhage, and two thromboembolic strokes. Elective patients sustained four postoperative strokes (3.9%), with one death (0.9%) as a consequence of hyperperfusion cerebral edema. U-CEAs performed ≤48 hours from symptom onset had a lower postoperative stroke rate than those performed >48 hours (4.4% vs 8.8%; P = .3). Among patients presenting with a stroke (group 1B), the National Institutes of Health Stroke Scale (NIHSS) assessment at discharge showed improvement in 79% (although only 25% had ≥4 points in reduction), stability in 17%, and deterioration in 4%. Patients with moderate stroke were slightly better in NIHSS improvement than those with mild stroke (median NIHSS variation at discharge, -3 vs -1; P = .001). CONCLUSIONS: Our results with U-CEA confirm that this population has a higher risk profile compared with elective surgery. The type of acute presentation is correlated with perioperative risk. U-CEA was safe when performed on patients presenting with transient ischemic attack. An acceptable complication rate was achieved for patients with minor to moderate strokes. The poorest outcomes occurred in patients presenting with stroke in evolution: U-CEA in these patients should be offered with extreme caution, although we are aware that a conservative treatment may not grant a better prognosis.

Seat belt injuries of the abdominal aorta in adults--case report and literature review.

Blunt abdominal trauma with major vascular involvement is found to be rare. Although few series have been reported in the literature, the true incidence of blunt abdominal aortic injury is unknown. Different modalities of blunt trauma may occur among civilians with steering wheel and seat belt injury secondary to motor vehicle accident the most frequent. Mechanical forces produce variable patterns of injury; therefore, the onset of signs and symptoms can be different. Dissection and thrombosis of the abdominal aorta have been frequently described among seat-belted adult patients with major vascular involvement. The associated abdominal viscus and/or vertebral lesions must always be taken into account. Prompt diagnosis allows adequate surgical treatment. We present the case of a 66-year-old woman, restrained front passenger involved in a motor vehicle collision, who had small bowel transection, vertebral fractures, and aortic partial occlusion below inferior mesenteric artery with bilateral iliac artery involvement. Along with the case reported, the purpose of this study is to highlight and compare features and management of the previous cases described in the English literature.