Mary Paula Colgan

Background: Telemedicine is increasingly used in several fields of healthcare, including vascular medicine. This study aimed to investigate the views of experts and propose clinical practice recommendations on the possible applications of telemedicine in vascular medicine. Methods: A clinical guidance group proposed a set of 67 clinical practice recommendations based on the synthesis of current evidence and expert opinion. The Telemedicine Vascular Medicine Working Group included 32 experts from Europe evaluating the appropriateness of each clinical practice recommendation based on published RAND/UCLA methodology in two rounds. Results: In the first round, 60.9% of clinical practice recommendations were rated as appropriate, 35.9% as uncertain, and 3.1% as inappropriate. The strongest agreement (a median value of 10) was reached on statements regarding the usefulness of telemedicine during the 2019 coronavirus disease (COVID-19) pandemic, its usefulness for geographical areas that are difficult to access, and the superiority of video calls compared to phone calls only. The lowest degree of agreement (a median value of 2) was reported on statements regarding the utility of telemedicine being limited to the COVID-19 pandemic and regarding the applicability of teleconsultation in the diagnosis and management of abdominal aortic aneurysm. In the second round, 11 statements were re-evaluated to reduce variability. Conclusions: This study highlights the levels of agreement and the points that raise concern on the use of telemedicine in vascular medicine. It emphasizes the need for further clarification on various issues, including infrastructure, logistics, and legislation.

Introduction: Peripheral arterial disease (PAD) has a prevalence of between 3 to 10% of the general population. Due to multilevel disease often seen in peripheral arterial disease (PAD), straightforward management options are challenging. Hybrid procedure, combining endovascular and open surgery, is an ideal strategy for managing this cohort of patients. The aims of this study were to investigate the suitability of hybrid surgery in those with multilevel PAD. Methods: This is a single center retrospective study, including all patients who underwent a single stage hybrid revascularization for multilevel peripheral arterial disease in St James's Hospital from June 1991 to January 2021. Patients who presented with acute limb ischaemia, vasculitis, trauma or aneurysms were excluded. All data was collected from a prospectively maintained database. Primary outcomes were primary patency rate and secondary patency rate. Secondary outcomes were major amputation rate, 30-day mortality, and complications. Results: 163 hybrid procedures were completed over this period, on 115 patients. 26% (30) were female with a median age of 71. 23% (39) were smokers. 51% (83) had known cardiovascular disease, 34% (56) had a diagnosis of diabetes and 20% (33) had chronic kidney disease. 29% (47) presented with claudication, 33% (54) with rest pain and 38% (62). The most common open procedure completed was common femoral endarterectomy (76%) and most common endovascular procedure was iliac angioplasty (46%). The primary patency rate at 1 year was 74% (Figure 1) and secondary patency rate was 85% (Figure 2). Preoperative median ABI was 0.48 (IQR 0.31-0.63), which significantly increased to 0.72 (IQR 0.54-0.99, p <0.005) following intervention. There was a limb salvage rate of 95%, with 5% (9) of limbs required major amputation post operatively. 30 day mortality was 4% (5). 10% (13) had postoperative hemorrhage, with 4.7% (6) requiring intervention. 2.6% (3) experienced respiratory complications and 2.5% (3) experienced cardiac complications. Conclusion: Within this cohort, there was a primary patency rate of 74% at one year post hybrid procedure and 85% secondary patency rate. There was also a significant improvement in ABI post operatively. This demonstrates hybrid procedures offer an attractive alternative to open or endovascular surgery in those with multilevel disease. Further research is required to quantify long term outcomes within this cohort. Article published online: 10 June 2022 © 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/) Thieme Medical Publishers, Inc. 333 Seventh Avenue, 18th Floor, New York, NY 10001, USA

Background: To estimate the prevalence and impact of chronic edema (CE) in two Irish health care settings as part of LIMPRINT, an international study developed and co-ordinated by the International Lymphoedema Framework (ILF), and researched in Ireland by the National Lymphoedema Framework Ireland (NLFI). Methods and Results: Data were collected using clinical assessment tools previously validated by the ILF. Three hospital settings were chosen, both an in-patient and out-patient oncology unit in Galway and a vascular out-patient unit in Dublin. Patients attending an oncology clinic or in an in-patient ward on a specified day were invited to participate as desired, and all patients attending vascular out-patients for a 4-week period were included in the study. All patients were assessed for the presence of CE, and if present, patients were asked to answer several questionnaires regarding diagnosis, available services, quality of life, and wound care where appropriate. The collection of data was anonymized and was inputted to a central database (Clindex). A total of 152 patients were assessed, 76 from the oncology service and 76 from the vascular service. Eighty-seven (57%) patients were female and 65 (43%) patients were male. The mean age was 65 years with a range 15–93 years. Twenty-five patients (16%) had CE, 8 (11%) in the oncology service and 17 (22%) in the vascular service. All the oncology patients were normal weight while almost 60% ( n = 10) of the vascular patients were obese. Two (25%) of the oncology patients had a history of cellulitis, whereas seven (41%) of the vascular patients had a history of cellulitis. Four of the oncology patients (50%) received full lymphedema management whereas two oncology patients (20%) received no treatment at all. In contrast, in the vascular group, only two patients (12%) received full lymphedema management. Eight patients (47%) were receiving no treatment at all and seven (41%) were in compression garments and received skin care advice only. Conclusion: Though number of patients are small, these results highlight the high prevalence of CE in both oncology and vascular service patients as well as the disparities in management. In addition, there is a high incidence of cellulitis reported that is possibly not surprising given the low number of patients receiving full lymphedema care. Good data collection is essential if we are to provide and fund a comprehensive service in the future.

Article: Milestones in thromboangiitis obliterans. A position paper of the VAS-European Independent Foundation in Angiology/Vascular Medicine - International Angiology 2021 Jul 08 - Minerva Medica - Journals

The relationship between plaque morphology, cerebral micro-embolic signals (MES) and platelet biomarkers in carotid stenosis patients warrants investigation. We combined data from two prospective, observational studies to assess carotid plaque morphology and relationship with cerebral MES and platelet biomarkers in patients with recently symptomatic (≤4 weeks of transient ischaemic attack (TIA)/ischaemic stroke) versus asymptomatic carotid stenosis. Plaque morphology on ultrasound was graded with Grey-Scale Median (GSM) and Gray–Weale (GW) scoring. Bilateral transcranial Doppler ultrasound classified patients as ‘MES+ve’ or ‘MES-ve’. Full blood counts were analysed and flow cytometry quantified CD62P and CD63 expression, leucocyte-platelet complexes and reticulated platelets. Data from 42 recently symptomatic carotid stenosis patients were compared with those from 36 asymptomatic patients. There were no differences in median GSM scores between symptomatic and asymptomatic patients (25 vs. 30; P = 0.31) or between MES+ve vs. MES-ve symptomatic patients (36 vs. 25; P = 0.09). Symptomatic patients with GSM-echodense plaques (GSM ≥25) had higher platelet counts (228 vs. 191 × 10⁹/L), neutrophil–platelet (3.3 vs. 2.7%), monocyte–platelet (6.3 vs. 4.55%) and lymphocyte–platelet complexes (2.91 vs. 2.53%) than ‘ asymptomatic patients with GSM-echodense plaques’ ( P ≤ 0.03). Recently, symptomatic carotid stenosis patients with ‘GSM-echodense plaques’ have enhanced platelet production/secretion/activation compared with their asymptomatic counterparts. Simultaneous assessment with neurovascular imaging and platelet biomarkers may aid risk-stratification in carotid stenosis.

Background Assessment of ‘high on-treatment platelet reactivity (HTPR)’ could enhance understanding of the pathophysiology of first or recurrent vascular events in carotid stenosis patients on antiplatelet therapy. Methods This prospective, multi-centre study assessed antiplatelet–HTPR status and its relationship with micro-emboli signals (MES) in asymptomatic vs. symptomatic ≥ 50–99% carotid stenosis. Platelet function/reactivity was assessed under ‘moderately high shear stress’ with the PFA-100^® and ‘low shear stress’ with VerifyNow^® and Multiplate^® analysers. Bilateral 1-h transcranial Doppler ultrasound of the middle cerebral arteries classified patients as MES + ve or MES − ve. Results Data from 34 asymptomatic patients were compared with 43 symptomatic patients in the ‘early phase’ (≤ 4 weeks) and 37 patients in the ‘late phase’ (≥ 3 months) after TIA/ischaemic stroke. Median daily aspirin doses were higher in early symptomatic (225 mg; P < 0.001), but not late symptomatic (75 mg; P = 0.62) vs. asymptomatic patients (75 mg). There was a lower prevalence of aspirin–HTPR in early (28.6%; P = 0.028), but not late symptomatic (38.9%; P = 0.22) compared with asymptomatic patients (56.7%) on the PFA-100^®, but not on the VerifyNow^® or Multiplate^® (P ≤ 0.53). Early symptomatic patients had a higher prevalence of aspirin–HTPR on the PFA-100^® (28.6%) vs. VerifyNow^® (9.5%; P = 0.049), but not Multiplate^® assays (11.9%, P = 0.10). There was no difference in aspirin–HTPR prevalence between any symptomatic vs. asymptomatic MES + ve or MES − ve subgroup. Discussion Recently symptomatic moderate–severe carotid stenosis patients had a lower prevalence of aspirin–HTPR than their asymptomatic counterparts on the PFA-100^®, likely related to higher aspirin doses. The prevalence of antiplatelet–HTPR was positively influenced by higher shear stress levels, but not MES status.

Chronic critical lower limb ischemia (CLI) has been defined as ischemia that endangers the leg. An attempt was made to give a precise definition of CLI, based on clinical and hemodynamic data (Second European Consensus). CLI may be easily defined from a clinical point of view as rest pain of the distal foot or gangrene or ulceration. It is probably useful to add leg ulcers of other origin which do not heal because of severe ischemia, and to consider the impact of frailty on adverse outcome. From a hemodynamic viewpoint there is no consensus and most of the existing classifications are not based upon evidence. We should thus propose a definition and then validate it in a prospective cohort in order to define the patients at major risk of amputation, and also to define the categories of patients whose prognosis is improved by revascularisation. From today’s available data, it seems clear that the patients with a systolic toe pressure (STP) below 30 mmHg must be revascularised whenever possible. However other patients with clinically suspected CLI and STP above 30 mmHg must be evaluated and treated in specialised vascular units and revascularisation has to be discussed on a case by case basis, taking into account other data such as the WiFi classification for ulcers.In conclusion, many useful but at times contradictory definitions of CLI have been suggested. Only a few have taken into account evidence, and none have been validated prospectively. This paper aims to address this and to give notice that a CLI registry within Europe will be set up to prospectively validate, or not, the previous and suggested definitions of CLI.

Background: To estimate the prevalence of lymphedema/chronic edema (CO) and wounds in acute hospital inpatients in five different countries. Methods and Results: A point-prevalence study was carried out during working day periods in six general hospitals in four countries (Denmark, France, United Kingdom, and Australia) and one hospital oncology inpatient unit in one other country (Ireland). The study used validated clinical tools for the assessment and collection of data. Data were collected by expert clinicians through interviews and physical examination of the patients present in the wards. A total of 1905 patients could be included and investigated among the 3041 total bed occupancy in the seven hospitals. Lymphedema/CO was present in 723 of them (38%). Main risk factors associated with CO were age, morbid obesity, and heart failure, as well as chair bound immobility and neurological deficiency. History of cellulitis was frequent in patients with CO and wounds (24.8%) and CO alone (14.1%) compared to the 1.5% prevalence in patients without CO. Conclusion: Lymphedema/CO is very frequent in patients hospitalized in hospital acute wards. It is strongly associated with obesity, venous insufficiency, and heart failure. Our results strongly suggest a hidden health care burden and cost linked to CO independently of chronic wounds.

Failure of endovascular aneurysm repair may require explant of the stent graft in a subset of patients. We sought to assess outcomes in a cohort of patients undergoing explant of endovascular aneurysm repair in both emergency and elective settings. Patients undergoing explant of endovascular aneurysm repair were identified from a prospectively maintained database, with additional information obtained through retrospective analysis of medical records. Over a 21-year period, 1997–2018 (May), there were 597 endovascular aneurysm repair procedures performed in our institution for abdominal aortic aneurysm. There were 19 endovascular aneurysm repair explants; five of these were referrals from other vascular centres. The median age was 73 years (range 46–81). The median length of time from insertion to explant was 39.2 months (range 0–153). Indications for elective explant were type Ia endoleak (n = 4), type 1b endoleak (n = 1), type II endoleak with increasing sac size (n = 1), type I/III endoleak (n = 1), type IV endoleak (n = 1), and increasing sac size without evident endoleak (type V, n = 2). The remaining nine cases were emergency procedures, with four patients presenting with rupture post endovascular aneurysm repair, four patients presenting with acute stent thrombosis, of which one also had a type 1a endoleak and one aorto-enteric fistula. There were no mortalities in the elective group and three mortalities in the emergency group (0 vs 33.3%, p = 0.087). Overall 30-day mortality was 15.8% Explant of aortic stent grafts can be associated with high mortality and morbidity rates, especially in the emergent setting. Patient and device selection and post-operative surveillance remain vitally important to optimise outcomes post endovascular aneurysm repair.