Maher Hamish

Randomized clinical trial of VNUS® ClosureFAST™ radiofrequency ablation versus laser for varicose veins

Endovenous laser ablation (EVLA) and radiofrequency ablation (RFA) are both associated with excellent technical, clinical and patient‐reported outcomes for the treatment of varicose veins. The aim of this study was to compare the techniques in a randomized clinical trial.

Pain Following 980-nm Endovenous Laser Ablation and Segmental Radiofrequency Ablation for Varicose Veins: A Prospective Observational Study:

Objectives: The aim of this study was to evaluate postoperative pain following endovenous laser ablation (EVLA) and radiofrequency ablation (RFA) and identify risk factors for increased pain. Methods: Patients undergoing either segmental RFA (VNUS Closure Fast TM, VNUS Medical Technologies, San Jose, California) or EVLA (980 nm) for varicose veins completed a preoperative disease-specific quality-of-life questionnaire (Aberdeen Varicose Vein Questionnaire [AVVQ]) and a diary card recording postoperative pain, return to normal activities, and return to work. Median 3- and 10-day pain scores were calculated. Results: In all, 81 patients returned diary cards (RFA = 45, EVLA = 36). Patients receiving RFA reported less postoperative pain than those receiving EVLA at 3 days (14.5 vs 25.8 mm, P = .053, Mann-Whitney U test) and 10 days (13 vs 23.3 mm, P = .014, Mann-Whitney U test) and returned to work earlier than those receiving EVLA (median 5 vs 9 days, P = .022). Conclusions: Patients treated with segmental RFA had less postoperative pain and returned to work quicker than those treated with EVLA.

Supervised Exercise for Intermittent Claudication – An Under-Utilised Tool

INTRODUCTION The use of supervised exercise in the management of intermittent claudication is well supported by level I evidence upon which are based grade A recommendations by the TASC II Inter-Society Consensus for the Management of Peripheral Arterial Disease and the Scottish Intercollegiate Guidelines Network (SIGN). These include that supervised exercise should be made available as part of the initial treatment for all peripheral arteriopaths. SUBJECTS AND METHODS A questionnaire, comprising 10 questions, was drawn up to address the issues pertinent to supervised exercise in intermittent claudication. This was distributed by post, along with a pre-stamped return envelope, to all ordinary members of the Vascular Society of Great Britain and Ireland (VSGBI). All returned and received questionnaires had their responses entered onto a pre-prepared spreadsheet. RESULTS Of the 186 questionnaires posted to UK resident surgeons, 84 were returned. This equates to a response rate of 45%. Of the responders, only 24% had access to supervised exercise. There was a large spread in the proportion of eligible patients which were referred to a programme, with only 14% of VSGBI members recommending 100% of eligible patients. Rates of non-compliance varied greatly. Contra-indications to supervised exercise included cardiac (27%), and vascular, musculoskeletal, geographic, and respiratory (8% each). Most supervised exercise sessions (85%) were 1 h in duration. The majority (65%) of programmes comprised one session per week. With regards the duration of programme, 55% were 3 months. Almost all classes were led by either a physiotherapist (41%) or a nurse (48%). In centres where no supervised exercise programme was available, verbal advice was given by 63%, with 34% offering leaflets. A supervised exercise set up has not been achieved due to lack of resource in 72%. CONCLUSIONS These results are contrary to the recommendations offered by the TASC II Inter-Society Consensus and SIGN, in particular in terms of availability and referral to supervised exercise, as well as frequency of the classes where programmes were in place. The offer of information either verbally or via leaflet is commended; however, this has been shown as inferior to supervised exercise. Quoting resource as the reason for non-implementation goes against the published quality-of-life and pharmaco-economic data, which promote supervised exercise as both functionally and financially effective. This work highlights the importance of translating the results of research into evidence-based clinical practice.

Variations in the Pharmacological Management of Patients Treated with Carotid Endarterectomy: A Survey of European Vascular Surgeons

OBJECTIVES The peri-operative use of antiplatelet, anticoagulant and other drugs for patients undergoing carotid endarterectomy (CEA) is unclear and consensus is lacking. This study aimed to assess the current peri-operative practice of European vascular surgeons with respect to antiplatelet and other medications for patients undergoing CEA. DESIGN Online questionnaire study. METHODS Members of the Vascular Society of Great Britain & Ireland and European Society for Vascular Surgery were invited to complete an online survey in March 2008. Surgeons were asked about their preferences for the peri-operative administration of antiplatelet, statin and other medications for patients undergoing carotid endarterectomy. RESULTS Partial or complete responses were received from 399/650 (61.4%) surgeons with a collective annual throughput of >11500 CEA procedures. For symptomatic and asymptomatic patients, 20/392 (5%) and 47/392 (12%) of surgeons would stop aspirin before surgery and 170/392 (43%) and 217/392 (55%) of surgeons would stop Clopidogrel prior to CEA. Of surgeons who would stop Clopidogrel, 84/170 (49%) and 124/217 (57%) would do so >7 days before surgery for symptomatic and asymptomatic patients respectively. 12/393 (3%) surgeons would prescribe one 75 mg dose of Clopidogrel on the evening before surgery. Intra-operative Dextran was used selectively by 40/395 (10%). Only 78/393 (20%) would delay surgery to commence a statin. Intra-operatively, 348/394 (88%) used intravenous heparin, which was reversed routinely by 47/348 (13%) and selectively by 60/348 (17%). CONCLUSIONS There appears to be broad consensus between vascular surgeons in the pharmacological management of patients undergoing carotid endarterectomy, although some variations do exist. Further clinical studies may help clarify the optimum management strategy in this patient group.

Endovenous treatments for varicose veins--over-taking or over-rated?

Objectives A variety of endovenous therapies for the treatment of superficial venous incompetence are currently available. The aim of this study was to evaluate the prevalence of endovenous techniques used by consultant vascular surgeons in the United Kingdom. Methods An anonymous online survey of 16 multiple choice questions relating to the nature and provision of treatment for varicose veins was devised. Consultant members of the Vascular Society of Great Britain and Ireland were invited to participate by email. Results A total of 108/352 (31%) surgeons completed the survey. The majority offered surgery as the first-line treatment for primary great saphenous vein (GSV) and small saphenous vein (SSV) incompetence (69% and 74%, respectively). Endovenous procedures were offered as first-line treatment by 32/108 (29.6%) for GSV reflux, 36/51 (70.6%) surgeons performed these under local anaesthetic and 21/51 (41.2%) were performed as an outpatient procedure. The most important factor influencing treatment decisions was considered to be patient preference by 77/108 (71.3%) surgeons, although 48/61 (78.7%) respondents were restricted by primary care trusts with regard to endovenous treatments, and 33/108 (30.6%) offered different treatments to private patients. Conclusion Traditional surgery remains the most commonly offered treatment for patients with varicose veins. The provision of endovenous therapies varies greatly, and there are significant differences in local availability regarding these treatments.

Delayed Hepato-Spleno-Renal Bypass for Renal Salvage following Malposition of an Infrarenal Aortic Stent-Graft

Purpose: To report a salvage maneuver for accidental coverage of both renal arteries during endovascular aneurysm repair (EVAR) of an infrarenal aortic aneurysm (AAA) and survey our surgical colleagues in the UK for their use of this bypass procedure. Methods: A 74-year-old woman who had an EVAR complicated by renal failure secondary to malposition of the stent-graft underwent successful delayed renal revascularization with hepatorenal and splenorenal bypasses. This case prompted a literature review and preparation of an online 6-part questionnaire regarding the incidence and management of renal impairment following EVAR. The survey invitation was sent to all listed members of the Vascular Society of Great Britain and Ireland. Results: Responses from 68 (10.5%) of the 650 vascular surgeons invited to participate in the survey were analyzed. The combined experience of those who completed the survey was >1500 EVAR procedures per annum. Forty percent (27/68) of the respondents had experienced a case of bilateral renal artery occlusion during EVAR. Two thirds (67%, 18/27) of these surgeons stated a preference for revascularizing the kidneys endovascularly, 7 surgeons would convert to open repair, 1 surgeon favored iliorenal bypass, and another suggested splenorenal bypass. Following intervention, 15 (56%) of 27 surgeons achieved revascularization that resulted in a return to baseline serum creatinine, 7 (26%) achieved partial recovery of the patients serum creatinine, 3 (11%) had a patient on permanent dialysis, and 2 (7%) had patients who died (after open repair and endovascular procedure, respectively). Conclusion: Bilateral renal artery occlusion caused by malposition of a stent-graft is probably underreported. If revascularization of the kidneys by endovascular techniques fails, there is no consensus as to the optimal approach. Delayed revascularization should be considered if the kidneys show concentration of imaging contrast. Hepato-spleno-renal bypass, which has not heretofore been indicated for renal salvage post EVAR, can provide a good functional result in this situation.

Symptomatic late recanalization of an occluded internal carotid artery: a case report and review of the literature.

The natural history of patients with carotid artery occlusion is poorly understood, and patients are usually offered conservative treatment as the difficulty and risks of surgical intervention are thought to outweigh the natural history of the condition. The case of a 71-year-old male patient with symptomatic internal carotid artery stenosis in a previously occluded vessel is presented. This case suggests that symptomatic recanalization of an occluded carotid artery may occur and long-term duplex surveillance may be a justifiable strategy in this patient group.