Long-Term Impact of COVID-19 Related Disruption of National Health Service Elective Services on Emergency Major Lower Limb Amputations.

BACKGROUND: The COVID-19 pandemic has affected the healthcare systems worldwide since the dawn of 2020. In March 2020, the United Kingdom government announced the first national lockdown which severely disturbed all National Health Service (NHS) healthcare elective services. Our aim is to assess the long-term impact of COVID-19 related disruption of NHS elective services on emergency major lower limb amputations (MLLAs). METHODS: Patients' data for emergency MLLA for critical limb-threatening ischemia and diabetic foot infections performed at Aberdeen Royal Infirmary was collected through Trakcare and divided into the control prepandemic group (April 2018-March 2020) and the pandemic group (April 2020-March 2022). The statistical analysis was conducted using the IBM SPSS software (v28.0.1.1 [14]). RESULTS: A total of 358 patients underwent MLLA and 206 (57.5%) of these had diabetes mellitus. There was a 17% increase in the number of urgent referrals and every 1 in 5 of these finally underwent an amputation. There was an increase in the absolute number of Above- and Below-Knee amputations. There was a statistically significant increase by 33% in emergency MLLAs during the pandemic period (P < 0.05). A total of 165 postoperative deaths up to December 2022 were recorded with 30-day mortality rate of 7.26% (n = 26). CONCLUSIONS: NHS vascular management groups should update themselves with evolving technologies to optimize the care provided during future unprecedented times. Furthermore, more effective measures should also be implemented to avoid delayed presentations, which can potentially lead to higher rates of major limb amputations.

What Went Wrong with VEGF-A in Peripheral Arterial Disease? A Systematic Review and Biological Insights on Future Therapeutics.

BACKGROUND: Of the 200 million patients worldwide affected by peripheral arterial disease (PAD), 4% will inevitably require major limb amputation. Previous systematic reviews presented a conflicting body of evidence in terms of vascular endothelial growth factor (VEGF) family member effects upon PAD natural progression. Despite that, modulation of intrinsic angiogenesis mechanisms targeting the VEGF family members still confers an attractive therapeutic target. The aim of the present study was to evaluate current evidence of VEGF modulation in the context of PAD. METHODS: This is a systematic literature review conducted according to the PRISMA guidelines and registered under PROSPERO database [CRD42021285988]. Independent literature search was performed up to April 1, 2022, on six databases. A total of 22 eligible studies were identified [N: 3, interventional patient studies; N: 19, animal studies]. Animal studies were appraised by the SYRCLE risk of bias tool, while human participant studies were assessed by the Newcastle Ottawa scale. Overall, quality of evidence was deemed fair for both animal and human studies. Main study outcomes were percentage change of injured vessel lumen stenosis and neointimal area formation upon VEGF modulation (inhibition or activation) in comparison with control group. FINDINGS: Nineteen animal models and three human participant studies were included in the systematic review and assessed separately. Positive modulation of VEGF-A in animal models resulted in a median decrease of 65.58% [95% CI 45.2; 71.87] in lumen stenosis [14 studies]. Furthermore, positive modulation of VEGF-A was found to reduce neointimal area proliferation by a median decrease of 63.41% [95% CI 41.6; 79.59] [14 studies]. Median end of study duration was 28 days [range: 14-84 days]. Data were insufficient to assess these outcomes with respect to VEGF-B or VEGF-C modulation. The limited number of available human studies presented inadequate outcome assessment despite their overall fair NOS grading. INTERPRETATION: VEGF-A-positive modulation decreases lumen stenosis and neointimal hyperplasia in PAD simulation animal models. Previously identified variability among outcomes was found to strongly stem from the variability of experimental designs. Clinical applicability and safety profile of VEGF-A in the context of PAD remain to be defined by a robust and uniformly designed body of further animal model-based experiments.

Surgical Excision of a Contained Rupture of an Inferior Mesenteric Aneurysm.

Inferior mesenteric artery (IMA) aneurysms represent the minority of visceral aneurysm presentations. A 57-year-old female was admitted with a symptomatic IMA aneurysm secondary to atherosclerotic disease. She was treated with open excision which revealed a contained ruptured of a true aneurysm. This case highlights the challenges of an accurate preoperative diagnosis of IMA aneurysm and the correct position of the recent guidelines on visceral aneurysms issued by the Society of Vascular Surgery (SVS).

A double shunt technique for the prevention of ischaemia of a congenital, solitary, pelvic kidney during abdominal aortic aneurysm repair: a case report.

INTRODUCTION: Congenital solitary pelvic kidney is a rare condition, and its association with an abdominal aortic aneurysm is even more unusual. To the best of our knowledge, only two such cases have been reported in the literature to date. CASE PRESENTATION: We report the case of a 59-year-old Caucasian man with a congenital solitary pelvic kidney, who was found to have an abdominal aortic aneurysm 83 mm in diameter. Abdominal computed tomography angiography clearly identified two renal arteries, one originating from the aortic bifurcation. and the other from the proximal portion of the right common iliac artery. At surgery, renal ischaemia was prevented by introduction of an axillofemoral shunt (consisting of two femoral cannulas and a vent tube of extracorporeal circulation) from the right axillary to the right femoral artery, and a second Argyle shunt from the right common iliac artery to the origin of the left renal artery. A 20 mm Dacron tube graft was then implanted. Our patient's postoperative renal function was normal. CONCLUSION: The renal preservation double shunt technique used in this case seems to be effective during abdominal aortic aneurysm repair.

Simultaneous superficial venous surgery and on-table subintimal angioplasty in the treatment of venous leg ulcers with arterial compromise.

PURPOSE: To determine the feasibility of synchronous superficial venous surgery and on-table subintimal angioplasty in the treatment of venous ulcers with arterial compromise. METHODS: Between January 1992 and December 2004, 9 patients (8 women; median age 83 years, range 72-92) underwent the synchronous procedure. No patient had deep venous reflux; 4 patients presented with rest pain and 2 were diabetic. Their medical records were retrospectively reviewed to gather data on clinical assessment, ankle-brachial index (ABI), lower limb arterial and venous duplex scans, and treatment variables. RESULTS: Angioplasty was technically successful (median ABI improvement 0.31, range 0.23-0.34) in all procedures, which lasted a median 85 minutes (range 60-160). The procedure was performed under general anesthesia in 7 patients, local in 1, and spinal in 1. Superficial venous surgery was performed first in 8 patients: 6 had great saphenous vein (GSV) ligation without stripping, followed by subintimal angioplasty, and 1 also had small saphenous vein (SSV) ligation. One patient underwent SSV ligation first, followed by angioplasty; another had GSV disconnection and stripping, followed by angioplasty. In 1 patient, angioplasty preceded GSV surgery. One patient required repeat angioplasty 1 week later for re-occlusion. All ulcers healed (median 4 months, range 1-36). Five patients died during a median 32-month follow-up (range 4-82) from unrelated causes; there was 1 ulcer recurrence at 3 years in a patient who declined further investigation and treatment. CONCLUSIONS: Simultaneous superficial venous surgery and on-table subintimal angioplasty is a safe and novel strategy in the management of a select subgroup of patients with venous ulcers and coexistent arterial compromise.