Publications by authors named "Hamish Walker"

Objective: A hybrid approach is being employed increasingly in the management of peripheral arterial disease. This study aimed to assess the surgical site infection (SSI) incidence of hybrid revascularisation (HR) compared with common femoral endarterectomy (CFEA) alone.

Methods: This was a retrospective review of consecutive patients who underwent CFEA or HR alongside CFEA between 2017 and 2021 including one year of follow up.

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Background: Intraoperative video recordings are a valuable addition to operative written documentation. However, the review of these videos often requires surgical expertise and takes considerable time. While a large amount of work has been undertaken to understand the role of artificial intelligence (AI) in healthcare more generally, the application of these techniques to automate the analysis of surgical videos is currently unclear.

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Purpose: To develop guidance for the selection of balloon catheter size when performing an oesophageal dilatation for a stricture post oesophageal atresia repair.

Methods: This was a single centre retrospective study at a paediatric tertiary centre. Dilatations were performed between 2015 and 2020.

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Background: Databases for Congenital Heart Disease (CHD) are effective in delivering accessible datasets ready for statistical inference. Data collection hitherto has, however, been labour and time intensive and has required substantial financial support to ensure sustainability. We propose here creation and piloting of a semiautomated technique for data extraction from clinic letters to populate a clinical database.

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Introduction: Predicting severity of acute pancreatitis enables optimization of care, reducing morbidity and length of stay. Modified adult scoring systems have not been able to adequately predict severity in children.

Methods: This was a retrospective study of children presenting with a first episode of acute pancreatitis from 2002 to 2020 in a single tertiary paediatric surgical centre.

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Background: During rhytidectomies, the cervical branch of the facial nerve (CBFN) can easily be encountered, and potentially injured, when releasing the cervical retaining ligaments in the lateral neck. This nerve has been shown to occasionally co-innervate the depressor anguli oris muscle, and damage to it can thus potentially compromise outcomes with a postoperative palsy.

Objectives: The authors sought to examine the lateral cervical anatomy specific to the CBFN to ascertain if the position of the nerve can be predicted, thereby enhancing safety of the platysmal flap separation and dissection from this lateral zone of adhesion.

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Objective: Myocardial fibrosis has been associated with poorer outcomes in tetralogy of Fallot, however only a handful of studies have assessed its significance in the current era. Our aim was to quantify the amount of late gadolinium enhancement in both the LV and RV in a contemporary cohort of adults with surgically repaired tetralogy of Fallot, and assess the relationship with adverse clinical outcomes.

Design: Single centre cohort study SETTING: National tertiary referral center Patients: One hundred fourteen patients with surgically repaired tetralogy of Fallot with median age 29.

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The population of adults with congenital heart disease (CHD) now exceeds the population of children with CHD. The long-term management of these patients relies on sequential assessment of anatomy and physiology and integration with symptoms, all targeted toward decision making around intervention. The advances in technology have vastly improved our assessment of anatomy and function.

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Objective: The study objective was to evaluate long-term trends in morbidity and mortality in a national cohort of adult patients with a systemic right ventricle due to the atrial switch for transposition of the great arteries or congenitally corrected transposition of the great arteries.

Methods: We performed a retrospective cohort study from a baseline of 18 years, including life table and Kaplan-Meier analysis for probability of death/transplant, arrhythmia, surgical or percutaneous intervention, and permanent pacemaker insertion.

Results: A total of 97 adults with transposition of the great arteries-atrial switch (Mustard procedure in 80/Senning procedure in 17) and 32 adults with congenitally corrected transposition of the great arteries survived.

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Considerable improvements have been made in care and provision for patients with congenital heart disease in the United Kingdom. However, delayed presentation of adult patients with sequelae of known childhood cardiac defects reflects the current situation that there is no national registry of patients with congenital heart disease, and this "lost cohort" of patients is difficult to trace. Maintaining regular follow-up for selected patients with congenital heart disease can be challenging for a variety of reasons, but remains particularly important as emerging therapies and treatment strategies continue to alter management.

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Background: Phosphodiesterase type 5 (PDE5) inhibitors (eg, sildenafil) are a novel, orally active approach to the treatment of pulmonary arterial hypertension. The role of natriuretic peptides in the response to sildenafil was examined in mice lacking NPR-A, a guanylyl cyclase-linked natriuretic peptide receptor, in which pulmonary hypertension was induced by hypoxia.

Methods And Results: Mice homozygous for NPR-A (NPR-A+/+) and null mutants (NPR-A-/-) were studied.

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