Low profile endografts for the endovascular treatment of abdominal aortic aneurysms.

INTRODUCTION: Favorable midterm outcomes have been reported with the use of low-profile endografts (LPE), but long-term data is still needed. Furthermore, it is unclear if each of these LPE may have advantages over the other, which may, in turn, affect the outcomes. We systematically reviewed the literature about complications and reintervention rates of patients submitted to endovascular aneurysm repair (EVAR) of abdominal aortic aneurysm (AAA) using LPE. MATHERIALS AND METHODS: A literature search was conducted including articles that reported 30-days and follow-up mortality, complications, and reintervention rates of patients treated with EVAR using Incraft (Cordis), Zenith LP/Alpha (Cook Medical Inc) and Ovation (Endologix) endografts. RESULTS: 36 papers were evaluated, reporting results of 582 patients treated with Zenith device, 1211 with Incraft and 3449 with Ovation. During follow up, similar survival and freedom from reintervention rates were reported among the various types of endograft both at 1 and 3 years. The incidence of limb stenosis/kinking was significantly higher in patients treated with Zenith LP/Alpha (2.1%, P = 0.008), while the Incraft device had a significantly lower proportion of type III endoleaks (P < 0.001). CONCLUSIONS: Long-term survival and freedom from reintervention rates were comparable among the three LPEs. The Cook Zenith device had the highest rates of limb stenosis/kinking, while the Incraft device had the lowest occurrence of type III endoleak. PROSPERO: Registration number: CRD42022315875.

Solving Intraoperative Complications During Endovascular Repair of Late Contained Ruptured Aortic Pseudoaneurysm After Surgical De-coarctation: Case Report and Systematic Review of Literature.

AIM: We present a case of successful endovascular repair of late ruptured aortic anastomotic pseudoaneurysm following previous left subclavian artery-descending thoracic aorta bypass and concomitant emergency thoracic endovascular aortic repair (TEVAR) of complicated endovascular aortic de-coarctation never previously described is also presented. A review of the intraoperative, 30-day, and follow-up morbidity, mortality, and complications of TEVAR as endovascular treatment of late aneurysm/pseudoaneurysms after surgical aortic de-coarctation was also performed. METHODS: The systematic review was performed in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement and following PICO model. A literature search was conducted on MEDLINE, PubMed, EMBASE, Cochrane Library, Google Scholar, Science Direct, and Web of Science using the words "tevar of late complication of aortic coarctation surgical repair" and "endovascular repair of anastomotic pseudoaneurysm in coarctation" up to June 17, 2022. Data were extracted from study documents about study design, patient's demographics and comorbidities, details about primary surgical repair, type of late complication, time between open surgery and occurrence of complications, details of the secondary endovascular procedure with technical success, early, and follow-up mortality and morbidity. RESULTS: A total of 18 papers were included with 78 patients (48 men, 69.5%). The most frequent type of primary open surgical repair was patch aortoplasty (46, 58.9%). Focusing on aneurysm and pseudoaneurysm as late complications, most of the patients were asymptomatic (45, 57.7%). All patients underwent TEVAR, 14 of them (17.9%) in urgent/emergent setting. The technical success was 98.7%, with 1 intraoperative death due to rupture of the aorta. In total, 31 patients out of 78 (39.7%) showed different complications in the immediate postoperative time, with type II endoleak being the most observed (8/31, 25.8%). The mean follow-up time was about 2 years (26.5 months, range 3-92). Overall, 30-day mortality was 2.6%. Complications occurred in 30 patients (39.4%), 23 of them resolved during the follow-up period. CONCLUSIONS: With the limit of low-quality data, TEVAR can be considered a safe and effective option for the treatment of late complications after open surgery for aortic coarctation, even in urgent settings. CLINICAL IMPACT: Different specialists have to face the technical complexities and risks related to treatment of late complications after surgical de-coartaction, which can be either surgical or endovascular, and depend on patient's ages. Although covered stents appear to have some protection from the development of stent fractures, doesn't provide complete protection from late aneurysm formation. In this setting, TEVAR may represent a valuable option, combining the advantages of the covered stent with those of a device that can cover a wider range of aortic length, especially in adult patients. This study shows thoracic endovascular repair can be considered a safe and effective option in clincal practice for the treatment of late complications after open surgery for AC, even in urgent settings.

Blunt Thoracic Aortic Injury.

Blunt thoracic aortic injury (BTAI) is a potentially fatal condition that needs prompt recognition and expedited management. Clinical manifestations of BTAI are not straight forwarding and may be misdiagnosed. The grade of aortic injury is an important determinant of perioperative mortality and morbidity, as well as the indication of treatment, along with the presence of concomitant lesions of other involved organs. The mainstay of treatment nowadays for hemodynamically stable patients who survive the trauma scene is represented by delayed endovascular repair whenever anatomically and clinically feasible. Endovascular repair, in fact, is burdened by lower perioperative mortality and morbidity rates if compared to open surgical repair, but concerns remain about the need for long-term surveillance and radiation exposure in patients who are at a younger age than patients treated for the aneurysmal disease. The aim of the paper is to provide an update on the diagnostic modalities and strategies of treatment for patients affected by BTAI.

Partial Eversion Carotid Endarterectomy versus Conventional Techniques for Significant Carotid Stenosis.

BACKGROUND: To compare the outcomes of patients who were submitted to partial carotid endarterectomy (P-CEA) to those of patients who underwent standard conventional CEA with patch closure (C-CEA) and eversion CEA (E-CEA) for a significant carotid stenosis. METHODS: Data of patients who consecutively underwent CEA from January 2014 to December 2018 for a significant carotid stenosis were retrospectively collected. Primary outcomes included mortality and the occurrence of neurologic and cardiologic complications, both at 30 days and during follow-up. Secondary outcomes included the occurrence of perioperative local complications (i.e. cranial nerve injuries, hematomas) and restenosis during follow-up. P values < 0.5 were considered statistically significant. RESULTS: Three-hundred twenty-seven patients (241 males, 74%) underwent CEA for carotid stenosis (28.6% symptomatic). P-CEA was performed in 202 patients (61.8%), while C-CEA and E-CEA were performed in 103 and 22 cases respectively. At 30 days, neurologic complications were not significantly different among the 3 groups (2.8% in the group of C-CEA, 2.4% after P-CEA and 0% in E-CEA patients, P = 0.81), neither during follow-up. Perioperative local complications also were not significantly different among the 3 groups (P = 0.16). CONCLUSIONS: P-CEA had similar outcomes if compared to C-CEA and to E-CEA in terms of perioperative mortality, occurrence of neurologic and cardiologic complications, and occurrence of local complications. Also, in the long-term, P-CEA, C-CEA, and E-CEA were burdened by similar rates of mortality, neurologic, and cardiologic complications and restenosis.

Factors associated with perioperative mortality after late open conversion for failed endovascular aortic repair.

INTRODUCTION: The aim of this study was to perform a systematic review about the clinical and technical aspects of late open conversion for failed endovascular aortic repair (EVAR) of abdominal aortic aneurysms (AAA), and to investigate if the need for suprarenal aortic cross clamping, graft infection, urgent procedures, endoleaks and aortic rupture were associated with an increase of 30-days (perioperative) mortality. EVIDENCE ACQUISITION: A literature search was conducted on PubMed using the words "open conversion endovascular" on December 29th, 2021. Studies included randomized controlled trials, cohort studies, and case series of patients submitted to open conversion that were performed at least 1 month after the initial EVAR for AAA, reporting about 30-days mortality after surgery. A meta-analysis was performed to explore the association of suprarenal aortic cross clamping, graft infection, urgent procedures, endoleaks and aortic rupture with 30-days postoperative mortality using log odds ratios (ORs), with STATA/MP 17.0 (Stata Corp. 2021, LLC). Two-sided P values less than 0.05 were considered statistically significant. EVIDENCE SYNTHESIS: The search retrieved 985 results on PubMed from 1994 to 2021. Among them, 40 papers were included in the study for the systematic review, and 5 of them for the meta-analysis. A total of 2297 patients from 1992 to 2020 were submitted to open conversion after a median of 40.4 months from the initial EVAR. Endoleak was the most frequent cause of open conversion (76.3%). Perioperative mortality was 23.5% for urgent and 5.3% for elective conversions. At meta-analysis, urgent procedures and aortic rupture were both associated with higher perioperative mortality (OR 5.27, 95% CI 2.90-9.57 and OR 5.61, 95% CI 3.09-10.19 respectively). Similarly, patients with infections and who needed suprarenal aortic clamping were at higher risk of 30-days postoperative death (OR 3.74, 95% CI 1.96-7.13) and OR 2.23, 95% CI 1.24-4.02), while the presence of a preoperative endoleaks was not associated with a higher 30-days mortality. CONCLUSIONS: Late open conversion after EVAR of AAA is burdened by a perioperative mortality rate of 23.5% for urgent and 5.3% for elective cases. Urgent treatment, presence of aortic rupture or infection, and the need for suprarenal aortic cross clamping were associated with increased perioperative mortality, while the presence of an endoleak did not affect perioperative mortality.

Role of Preoperative Ultrasound Shear-Wave Elastography and Radiofrequency-Based Arterial Wall Tracking in Assessing the Vulnerability of Carotid Plaques: Preliminary Results.

We aimed at evaluating the ability of point shear-wave elastography (pSWE) and of a radiofrequency (RF) echo-tracking-based method in preoperatively assessing the vulnerability of the carotid plaque in patients undergoing carotid endarterectomy (CEA) for significant asymptomatic stenosis. All patients who underwent CEA from 03/2021 to 03/2022 performed a preoperative pSWE and an RF echo-based wall evaluation of arterial stiffness using an Esaote MyLab ultrasound system (EsaoteTM, Genova, Italy) with dedicated software. The data derived from these evaluations (Young's modulus (YM), augmentation index (AIx), pulse-wave velocity (PWV)) were correlated with the outcome of the analysis of the plaque removed during the surgery. Data were analyzed on 63 patients (33 vulnerable and 30 stable plaques). In stable plaques, YM was significantly higher than in vulnerable plaques (49.6 + 8.1 kPa vs. 24.6 + 4.3 kPa, p = 0.009). AIx also tended to be slightly higher in stable plaques, even if it was not statistically significant (10.4 + 0.9% vs. 7.7 + 0.9%, p = 0.16). The PWV was similar (12.2 + 0.9 m/s for stable plaques vs. 10.6 + 0.5 m/s for vulnerable plaques, p = 0.16). For YM, values >34 kPa had a sensitivity of 50% and a specificity of 73.3% in predicting plaque nonvulnerability (area under the curve = 0.66). Preoperative measurement of YM by means of pSWE could be a noninvasive and easily applicable tool for assessing the preoperative risk of plaque vulnerability in asymptomatic patients who are candidates for CEA.

Endovascular Treatment of Abdominal Aorta Floating Thrombus in a Patient with Recurrent Peripheral Embolization and COVID-19.

PURPOSE: To present stent-graft treatment of floating thrombus in the abdominal aorta. A review of the literature about aortic floating thrombus (AFT) was also performed. CASE REPORT: A 56-year-old female with no risk factors for vascular disease but with history of a mild COVID-19 infection in the previous month, for which she had started anticoagulant therapy at a prophylactic dosage, developed an acute ischemia of the lower limbs and was diagnosed with floating thrombosis of the abdominal aorta. The thrombus was excluded from the aortic blood flow by deployment of a stent-graft in the abdominal aorta. At 12 months, the patient was well, and the thrombus in the abdominal aorta appears to be completely excluded by the stent-graft. A review of the available literature from 1980 to 2022 showed 74 cases of AFT located in the aortic arch, in the descending thoracic and in the abdominal aorta. In most cases the AFT involved the aortic arch (38/74, 51.3%) and/or the descending thoracic aorta (30/74, 40.5%), while the abdominal aorta was involved in 6 cases. In 2 of these 6 cases, the patients had a COVID-19 infection. The AFT was mostly approached either medically with anticoagulation/systemic thrombolysis (32/74, 43.2%) or with surgical removal (31/74, 41.9%), while endovascular coverage of the thrombus with an endograft was performed in 6 cases of AFT located in the aortic arch and in the descending thoracic aorta (3 cases each). CONCLUSION: There is no consensus about the optimal treatment of AFT. In selected cases, abdominal stent-grafts may be used for stabilization and exclusion of symptomatic abdominal aorta floating thrombosis to prevent progression and recurrent embolization.

Clopidogrel Resistance and Ticagrelor Replacement in Dual Antiplatelet Therapy for Carotid Artery Stenting.

BACKGROUNDS: Resistance to the pharmacological effect of clopidogrel in patients undergoing dual antiplatelet therapy for carotid stenting may increase the risk of periprocedural neurological events. The purpose of the study was to describe the phenomenon of clopidogrel resistance in a series of patients undergoing carotid stenting. METHODS: Data of patients who consecutively underwent carotid stenting from November 2016 to December 2020 for a significant stenosis and who underwent a dual antiplatelet therapy using acetyl-salicylic acid and clopidogrel were prospectively collected. Patients who were already taking a different thienopyridine were excluded. The effectiveness of antiplatelet drugs was assessed by the impedance aggregometry test. Primary endpoint was to evaluate the incidence of clopidogrel resistance and the effectiveness of ticagrelor as alternative therapy. P values < 0.05 were considered statistically significant. RESULTS: Two-hundred patients (80 females, 40%) underwent stenting for carotid stenosis (94% asymptomatic). The phenomenon of clopidogrel resistance was observed in 38 patients (19%), in whom clopidogrel was replaced by ticagrelor (90 mg/bis in die) with 100% effectiveness at aggregometry test. Platelet counts was associated to clopidogrel resistance (P = 0.001). There was no stent thrombosis at 30 days, neither major hemorrhagic events; a total of 12/200 major adverse cardiovascular events occurred (6%), including 1 in the group of patients who took ticagrelor and 11 in group of patients under clopidogrel (2.6% versus 6.7%, P = 0.55). CONCLUSIONS: Clopidogrel was ineffective in 19% of patients undergoing carotid stenting. Platelet count seemed to affect this phenomenon. In these patients, clopidogrel was effectively replaced by ticagrelor.

Guideline on carotid surgery for stroke prevention: updates from the Italian Society of Vascular and Endovascular Surgery. A trend towards personalized medicine.

BACKGROUND: This guideline (GL) on carotid surgery as updating of "Stroke: Italian guidelines for Prevention and Treatment" of the ISO-SPREAD Italian Stroke Organization-Group, has recently been published in the National Guideline System and shared with the Italian Society of Vascular and Endovascular Surgery (SICVE) and other Scientific Societies and Patient's Association. METHODS: GRADE-SIGN version, AGREE quality of reporting checklist. Clinical questions formulated according to the PICO model. Recommendations developed based on clinical questions by a multidisciplinary experts' panel and patients' representatives. Systematic reviews performed for each PICO question. Considered judgements filled by assessing the evidence level, direction, and strength of the recommendations. RESULTS: The panel provided indications and recommendations for appropriate, comprehensive, and individualized management of patients with carotid stenosis. Diagnostic and therapeutic processes of the best medical therapy, carotid endarterectomy (CEA), carotid stenting (CAS) according to the evidences and the judged opinions were included. Symptomatic carotid stenosis in elective and emergency, asymptomatic carotid stenosis, association with ischemic heart disease, preoperative diagnostics, types of anesthesia, monitoring in case of CEA, CEA techniques, comparison between CEA and CAS, post-surgical carotid restenosis, and medical therapy are the main topics, even with analysis of uncertainty areas for risk-benefit assessments in the individual patient (personalized medicine [PM]). CONCLUSIONS: This GL updates on the main recommendations for the most appropriate diagnostic and medical-surgical management of patients with atherosclerotic carotid artery stenosis to prevent ischemic stroke. This GL also provides useful elements for the application of PM in good clinical practice.

Psoas Cross-Sectional Measurements Using Manual CT Segmentation before and after Endovascular Aortic Repair (EVAR).

Sarcopenia has been associated with an increased incidence of adverse outcomes, including higher mortality, after endovascular aortic repair (EVAR). We aim to use computed tomography (CT) to quantify changes in total psoas muscles area (PMA) and psoas muscle density (PMD) after EVAR, and to evaluate the reproducibility of both measurements. PMA and PMD were assessed via manual segmentation of the psoas muscle on pre- and post-operative CT scans belonging to consecutive patients who underwent EVAR. Wilcoxon test was used to compare PMA and PMD before and after EVAR, and inter- and intra-reader agreements of both methods were evaluated through Bland−Altman analysis. A total of 50 patients, 42 of them males (84%), were included in the study. PMA changes from 1243 mm2 (1006−1445 mm2) to 1102 mm2 (IQR 937−1331 mm2), after EVAR (p < 0.001). PMD did not vary between pre-EVAR (33 HU, IQR 26.5−38.7 HU) and post-EVAR (32 HU, IQR 26−37 HU, p = 0.630). At inter-reader Bland−Altman analysis, PMA showed a bias of 64.0 mm2 and a coefficient of repeatability (CoR) of 359.2 mm2, whereas PMD showed a bias of −2.43 HU and a CoR of 6.19 HU. At intra-reader Bland−Altman analysis, PMA showed a bias of −81.1 mm2 and a CoR of 394.6 mm2, whereas PMD showed a bias of 1.41 HU and a CoR of 6.36 HU. In conclusion, PMA decreases after EVAR. A good intra and inter-reader reproducibility was observed for both PMA and PMD. We thus propose to use PMA during the follow-up of patients who underwent EVAR to monitor muscle depletion after surgery.

Endovascular Materials and Their Behavior in Peripheral Vascular Surgery.

Endovascular techniques have progressively become the first option for the treatment of stenosis and occlusions of both aorto-iliac and femoro-popliteal district. The development of new technologies and new materials has broadened the applicability of the endovascular techniques, allowing the treatment of each lesion with the most suitable material. A knowledge of the behavior of endovascular materials when treating peripheral arterial disease (PAD) is, therefore, crucial for optimization of the results. Here, we aim to review the most important technical features of the actually available endovascular materials for treating PAD.

Popliteal artery pseudoaneurysms in patients affected by osteochondroma.

Although exostosis or osteochondroma is a common bone tumor, associated vascular complications are rare. Clinical and radiological diagnoses are sometimes challenging, and there is no codification for surgical management. We report two cases of popliteal arterial pseudoaneurysms due to osteochondroma of the distal femur. A review of the current literature about case series and case reports of patients affected by arterial pseudoaneurysm complicating osteochondroma was also performed.

Antegrade versus retrograde common iliac artery revascularization and occurrence of erectile dysfunction.

AIM: To assess the effect of antegrade and retrograde common iliac artery (CIA) revascularization on erectile dysfunction (ED) using the validated International Index of Erectile Function (IIEF) questionnaire, on patients treated for chronic occlusions of the CIA. MATERIALS AND METHODS: Clinical data of patients who were submitted either to endovascular CIA revascularization (group A) or to femoral-femoral crossover bypass (group B) due a unilateral total occlusion of the CIA between 01/2015 and 12/2019 were retrospectively analyzed. Primary outcomes included the evaluation of ED using the IIEF questionnaire, before and 30 days after the operation. A P value <0.05 was considered statistically significant. RESULTS: A total of 33 patients underwent endovascular (14 patients, group A) or surgical treatment (19, group B) Before the operation, no differences were recorded in the occurrence of ED between the two groups, neither in the results of the IIEF questionnaire. After the intervention, patients of group A performed significantly better than those of group B in terms of IIEF questionnaire (18 ± 10.1 versus 12.1 ± 14.8, P=0.01). Age and COPD were negatively correlated with the preoperative results of the IIEF questionnaire (OR 0.049, 95%CI 0.02-0.05, P<0.001 and OR 0.29, 95%CI 0.01-0.56, P=0.03, respectively) and the postoperative results of the IIEF questionnaire (OR 0.02, 95% CI 0.01-0.04, P<0.001, and OR 0.46, 95% CI 0.17-0.75, P=0.001, respectively). CONCLUSIONS: Patients who were submitted to endovascular antegrade revascularization for occlusion of the CIA performed significantly better in terms of IIEF questionnaire than those who underwent surgical femoral-femoral crossover bypass and therefore retrograde HA revascularization. KEY WORDS: Common iliac artery occlusion, Erectile dysfunction, Femoro-femoral bypass, Iliac artery angioplasty, IIEF-5.

Anesthetic management of carotid endarterectomy: an update from Italian guidelines.

BACKGROUND AND AIMS: In order to systematically review the latest evidence on anesthesia, intraoperative neurologic monitoring, postoperative heparin reversal, and postoperative blood pressure management for carotid endarterectomy. The present review is based on a single chapter of the Italian Health Institute Guidelines for diagnosis and treatment of extracranial carotid stenosis and stroke prevention. METHODS AND RESULTS: A systematic article review focused on the previously cited topics published between January 2016 and October 2020 has been performed; we looked for both primary and secondary studies in the extensive archive of Medline/PubMed and Cochrane library databases. We selected 14 systematic reviews and meta-analyses, 13 randomized controlled trials, 8 observational studies, and 1 narrative review. Based on this analysis, syntheses of the available evidence were shared and recommendations were indicated complying with the GRADE-SIGN version methodology. CONCLUSIONS: From this up-to-date analysis, it has emerged that any type of anesthesia and neurological monitoring method is related to a better outcome after carotid endarterectomy. In addition, insufficient evidence was found to justify reversal or no-reversal of heparin at the end of surgery. Furthermore, despite a low evidence level, a suggestion for blood pressure monitoring in the postoperative period was formulated.

Viral Agents and Systemic Levels of Inflammatory Cytokines in Vulnerable and Stable Atherosclerotic Carotid Plaques.

BACKGROUND: To investigate the presence of genetic material of viral agents and the serum level of inflammatory cytokines in patients submitted to carotid endarterectomy having vulnerable versus stable atherosclerotic plaques. METHODS: Data of patients consecutively submitted to carotid endarterectomy for a significant stenosis from July 2019 to December 2019 were prospectively collected. The genetic material of Epstein-Barr (EBV), CitoMegalo (CMV), Herpes Simplex (HSV), Varicella-Zoster (VZV) and Influenza (IV) Viruses was searched in the patient's plaques, both in the "mid" of the plaque and in an adjacent lateral portion of no-plaque area. The serum levels of TNF-α, IL-1ß, IL-6, IL10 and CCL5 were determined. The obtained results were then correlated to the histologic vulnerability of the removed carotid plaque. P values < 0.05 were considered statistically significant. RESULTS: Data of 50 patients were analyzed. A vulnerable plaque was found in 31 patients (62%). The genome of CMV, HSV, VZV and IV was not found in any of the vascular samples, while the EBV genome was found in the "mid" of 2 vulnerable plaques, but not in their respective control area. Eighty-two percent of patients who did not receive anti-IV vaccination (23/28) had vulnerable carotid plaque, compared with 36% of vaccinated patients (8/22, P = 0.001). Serum levels of TNF-α and IL-6 were higher in patients with a vulnerable plaque compared to patients with a stable plaque (73.6 ± 238.2 vs. 3.9 ± 13.1 pg/ml, P= 0.01, and 45.9 ± 103.6 vs. 10.1 ± 25.3 pg/ml, P= 0.01, respectively), independent of comorbidities, viral exposure or flu vaccination. CONCLUSIONS: The EBV genome was found in the "core" of 2 vulnerable carotid plaques, but not in their respective adjacent control. Influenza vaccination was associated with a lower incidence of carotid plaque vulnerability. Serum levels of TNF-α and IL-6 were higher in patients with a vulnerable plaque compared to patients with a stable plaque.

COVID and venous thrombosis: systematic review of literature.

INTRODUCTION: We aimed to review the prevalence, the risk factors and the outcomes of venous thrombosis (VT) in patients hospitalized for COronaVirus Disease 19 (COVID-19). EVIDENCE ACQUISITION: Electronic bibliographic databases were searched using the words "COVID venous thrombosis". The review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement standards. EVIDENCE SYNTHESIS: The search of the literature retrieved 877 results. After assessment of full texts, 69 papers were included in the qualitative analysis and 23 of them in the quantitative evaluation. The analyzed studies included a total of 106,838 patients hospitalized for COVID-19 from January to December 2020. The pooled reported prevalence rate of VT was in median 16.7% (IQR 5.8-30%), being higher in ICU patients (60.8-85.4%). VT events were reported in about 75% of cases in the popliteal and calf veins. Signs and symptoms were present in 6.1% of cases. At quantitative evaluation, older age, D-dimer and obesity increased the odds to experience a VT (OR=3.54, 95% CI 0.65-6.43, P=0.01; OR=956.86, 95% CI 225.67-1668.05, P=0.01; OR=1.42, 95% CI 1.01-1.99, P=0.03 respectively). Female sex seemed to be protective against the odds of VT (OR=0.77, 95% CI 0.63-0.93, P=0.007). CONCLUSIONS: Among patients hospitalized for COVID-19, VT is a relatively common finding, with higher prevalence rates in ICU patients. VT occurs mostly in the distal regions of the lower limb and is asymptomatic in most cases. Older age, obesity and higher D-dimer values on admission increased the odds of VT, while female sex was protective against the odds of VT.

Sudden rupture of small aneurysm of the radial artery in a patient with COVID-19 pneumonia.

In patients with COVID-19, even small radial aneurysm may suddenly rupture.

Endovascular treatment of extracranial carotid artery stenosis using a dual-layer micromesh stents: a systematic review.

Introduction: We aimed to review the safety and effectiveness of dual-layer micromesh stents for the endovascular treatment of carotid artery stenosis.Methods: Electronic bibliographic databases were searched using the words 'micromesh carotid stent'. The review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement standards.Results: The search of the Literature retrieved 84 results. After assessment of full texts, 13 papers were included in the study. The analyzed studies included 797 patients, 32.1% of them were symptomatic. The reported technical success rate was 100% in all cases. During early follow-up, complications occurred overall in 16/797 patients (2%: 12 strokes, 3 deaths, and one transient ischemic attack). The study with the longest follow-up reported a survival rate of 82% at 4 years and a stroke-free survival rate of 84% at 4 years.Conclusion: With the limit of low data quality, the use of dual-layer stents was reported to be as safe and effective at 30 days for the endovascular treatment of extracranial carotid artery stenosis. The reported technical success was 100% in all cases. Further data coming from randomized controlled trials and larger cohort studies with longer follow-up are nevertheless needed for a better evaluation.

Non-Overt Coagulopathy in Non-ICU Patients with Mild to Moderate COVID-19 Pneumonia.

INTRODUCTION: Aim of the study is to assess the occurrence of early stage coagulopathy and disseminated intravascular coagulation (DIC) in patients with mild to moderate respiratory distress secondary to SARS-CoV-2 infection. MATERIALS AND METHODS: Data of patients hospitalized from 18 March 2020 to 20 April 2020 were retrospectively reviewed. Two scores for the screening of coagulopathy (SIC and non-overt DIC scores) were calculated. The occurrence of thrombotic complication, death, and worsening respiratory function requiring non-invasive ventilation (NIV) or admission to ICU were recorded, and these outcomes were correlated with the results of each score. Chi-square test, receiver-operating characteristic curve, and logistic regression analysis were used as appropriate. p Values < 0.05 were considered statistically significant. RESULTS: Data of 32 patients were analyzed. Overt-DIC was diagnosed in two patients (6.2%), while 26 (81.2%) met the criteria for non-overt DIC. Non-overt DIC score values ≥4 significantly correlated with the need of NIV/ICU (p = 0.02) and with the occurrence of thrombotic complications (p = 0.04). A score ≥4 was the optimal cut-off value, performing better than SIC score (p = 0.0018). Values ≥4 in patients with thrombotic complications were predictive of death (p = 0.03). CONCLUSIONS: Overt DIC occurred in 6.2% of non-ICU patients hospitalized for a mild to moderate COVID-19 respiratory distress, while 81.2% fulfilled the criteria for non-overt DIC. The non-overt DIC score performed better than the SIC score in predicting the need of NIV/ICU and the occurrence of thrombotic complications, as well as in predicting mortality in patients with thrombotic complications, with a score ≥4 being detected as the optimal cut-off.