Mr Sean Pymer's Outputs (32)

Comparative Performance of Clinician and Computational Approaches in Forecasting Adverse Outcomes in Intermittent Claudication (2025)
Journal Article
Ravindhran, B., Lim, A., Pymer, S., Prosser, J., Cutteridge, J., Nazir, S., Mohamed, A., Hemadneh, M., Lathan, R., Kapur, R., Johnson, B. F., Smith, G. E., Carradice, D., & Chetter, I. C. (2025). Comparative Performance of Clinician and Computational Approaches in Forecasting Adverse Outcomes in Intermittent Claudication. Annals of vascular surgery, 120, 138-145. https://doi.org/10.1016/j.avsg.2025.05.009

Background: Recent evidence has shown that machine learning (ML) techniques can accurately forecast adverse cardiovascular and limb events in patients with intermittent claudication. This is the first study to compare the predictive performance of ML... Read More about Comparative Performance of Clinician and Computational Approaches in Forecasting Adverse Outcomes in Intermittent Claudication.

Comparative Performance Of Clinician And Computational Approaches In Forecasting Adverse Outcomes In Intermittent Claudication (2025)
Presentation / Conference Contribution
Ravindhran, B., Cutteridge, J., Pymer, S., Prosser, J., Lim, A., Hemadneh, M., Nazir, S., Mohamed, A., Lathan, R., Johnson, B. F., Smith, G., Carradice, D., & Chetter, I. C. (2025, February). Comparative Performance Of Clinician And Computational Approaches In Forecasting Adverse Outcomes In Intermittent Claudication. Presented at Vascular & Endovascular Surgery Society 49th Annual Winter Meeting, Breckenridge, Colorado

Introduction and Objectives
Machine learning (ML) based prediction modelling has demonstrated superior abilities in analysing non-linear data with complex relationships. Pilot work in this work-stream has shown that ML techniques can accurately fore... Read More about Comparative Performance Of Clinician And Computational Approaches In Forecasting Adverse Outcomes In Intermittent Claudication.

Tailored Risk Assessment and Forecasting in Intermittent Claudication: A Proof of Concept Decision Support Tool (2024)
Presentation / Conference Contribution
Ravindhran, B., Prosser, J., Lim, A., Mishra, B., Lathan, R., Hitchman, L., Smith, G., Carradice, D., Thakker, D., Pymer, S., & Chetter, I. (2024, June). Tailored Risk Assessment and Forecasting in Intermittent Claudication: A Proof of Concept Decision Support Tool. Presented at The European Society for Vascular Surgery Translational Spring Meeting 2024, Stockholm, Sweden

The association between completion of supervised exercise therapy and long-term outcomes in patients with intermittent claudication, concomitant sarcopenia and cardiometabolic multimorbidity (2024)
Journal Article
Ravindhran, B., Igwe, C., Nazir, S., Prosser, J., Harwood, A., Lathan, R., Harwood, A. E., Carradice, D., Smith, G. E., Chetter, I. C., & Pymer, S. (2025). The association between completion of supervised exercise therapy and long-term outcomes in patients with intermittent claudication, concomitant sarcopenia and cardiometabolic multimorbidity. Annals of vascular surgery, 110(B), 216-223. https://doi.org/10.1016/j.avsg.2024.04.032

Introduction: The combination of intermittent claudication (IC), cardiometabolic multimorbidity (CMM), and sarcopenia is associated with worse outcomes than IC alone. This study aimed to identify whether the completion of supervised exercise therapy... Read More about The association between completion of supervised exercise therapy and long-term outcomes in patients with intermittent claudication, concomitant sarcopenia and cardiometabolic multimorbidity.

The prognostic value of simple frailty and malnutrition screening tools for determining surgical risk in patients with chronic limb threatening ischaemia undergoing major vascular surgery: A retrospective cross-sectional study (2024)
Journal Article
Palmer, J., Pymer, S., Smith, G., Ingle, L., Harwood, A., & Chetter, I. (online). The prognostic value of simple frailty and malnutrition screening tools for determining surgical risk in patients with chronic limb threatening ischaemia undergoing major vascular surgery: A retrospective cross-sectional study. Journal of Vascular Societies Great Britain and Ireland, https://doi.org/10.54522/jvsgbi.2024.124

Background: This study aims to explore the prognostic value of simple frailty and malnutrition tools for determining postoperative outcomes at 30 days and 1 year in patients with CLTI undergoing major surgery.
Methods: This was a single-centre retr... Read More about The prognostic value of simple frailty and malnutrition screening tools for determining surgical risk in patients with chronic limb threatening ischaemia undergoing major vascular surgery: A retrospective cross-sectional study.

Home-based high intensity interval training in patients with intermittent claudication: a systematic review protocol (2024)
Journal Article
Prosser, J., Staniland, T., Harwood, A., Ravindhran, B., McGregor, G., Huang, C., Twiddy, M., Nicholls, A., Ingle, L., Long, J., Chetter, I., & Pymer, S. (2024). Home-based high intensity interval training in patients with intermittent claudication: a systematic review protocol. Journal of Vascular Societies Great Britain and Ireland, 3(3), 155-159. https://doi.org/10.54522/jvsgbi.2024.103

Introduction: The aim of this systematic review is to consider the evidence base for home-based high intensity interval training (HIIT) in patients with intermittent claudication (IC). Prior knowledge of the evidence base suggests that there may be l... Read More about Home-based high intensity interval training in patients with intermittent claudication: a systematic review protocol.

High INtensity Interval Training in pATiEnts with Intermittent Claudication: A Qualitative Acceptability Study (2024)
Journal Article
Pymer, S., Harwood, A., Ibeggazene, S., McGregor, G., Huang, C., Nicholls, A., Ingle, L., Long, J., Rooms, M., Chetter, I. C., & Twiddy, M. (2024). High INtensity Interval Training in pATiEnts with Intermittent Claudication: A Qualitative Acceptability Study. Annals of vascular surgery, 102, 17-24. https://doi.org/10.1016/j.avsg.2023.11.043

Background: A novel high-intensity interval training (HIIT) program has demonstrated feasibility for patients with intermittent claudication (IC). The aim of this study was to explore patient perspectives of the HIIT program to inform refinement and... Read More about High INtensity Interval Training in pATiEnts with Intermittent Claudication: A Qualitative Acceptability Study.

Extracorporeal Shockwave for Intermittent Claudication and Quality of Life: A Randomized Clinical Trial (2024)
Journal Article
Cai, P., Pymer, S., Raza, A., Ibeggazene, S., Hitchman, L., Chetter, I., & Smith, G. (2024). Extracorporeal Shockwave for Intermittent Claudication and Quality of Life: A Randomized Clinical Trial. JAMA Surgery, https://doi.org/10.1001/jamasurg.2024.0625

Importance: Intermittent lower limb claudication limits function and quality of life. Supervised exercise programs are not readily available, and a noninvasive alternative is needed. Objective: To assess extracorporeal corporeal shockwave therapy in... Read More about Extracorporeal Shockwave for Intermittent Claudication and Quality of Life: A Randomized Clinical Trial.

Supervised Exercise Therapy for Intermittent Claudication: A Propensity Score Matched Analysis of Retrospective Data on Long Term Cardiovascular Outcomes (2023)
Journal Article
Ravindhran, B., Lim, A. J., Kurian, T., Walshaw, J., Hitchman, L. H., Lathan, R., Smith, G. E., Carradice, D., Chetter, I. C., & Pymer, S. (in press). Supervised Exercise Therapy for Intermittent Claudication: A Propensity Score Matched Analysis of Retrospective Data on Long Term Cardiovascular Outcomes. European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery, https://doi.org/10.1016/j.ejvs.2023.11.040

Objective: This study aimed to explore the long term outcomes of patients with intermittent claudication (IC) who completed supervised exercise therapy (SET) vs. those who declined or prematurely discontinued SET, focusing on the incidence of chronic... Read More about Supervised Exercise Therapy for Intermittent Claudication: A Propensity Score Matched Analysis of Retrospective Data on Long Term Cardiovascular Outcomes.

High-intensity interval training in patients with intermittent claudication (2023)
Presentation / Conference Contribution
Pymer, S., Harwood, A. E., Prosser, J., Waddell, A., Rhavindhran, B., McGregor, G., Ibeggazene, S., Huang, C., Twiddy, M., Nicholls, A. R., Ingle, L., Carroll, S., He, H., Long, J., Rooms, M., & Chetter, I. C. High-intensity interval training in patients with intermittent claudication. Presented at 2022 Vascular Society of Great Britain and Ireland Annual Scientific Meeting, Brighton, UK

Objective: Provision, uptake, adherence, and completion rates for supervised exercise programs (SEP) for intermittent claudication (IC) are low. A shorter, more time-efficient, 6-week, high-intensity interval training (HIIT) program may be an effecti... Read More about High-intensity interval training in patients with intermittent claudication.

A preoperative supervised exercise program potentially improves long-term survival after elective abdominal aortic aneurysm repair (2023)
Presentation / Conference Contribution
Sethi, S., Ravindhran, B., Long, J., Gurung, R., Huang, C., Smith, G. E., Carradice, D., Wallace, T., Ibeggazene, S., Chetter, I. C., & Pymer, S. A preoperative supervised exercise program potentially improves long-term survival after elective abdominal aortic aneurysm repair. Presented at 2023 Vascular Annual Meeting of the Society for Vascular Surgery, National Harbor, Maryland

Objective: A preoperative supervised exercise program (SEP) improves cardiorespiratory fitness and perioperative outcomes for patients undergoing elective abdominal aortic aneurysm (AAA) repair. The aim of this study was to assess the effect of a pre... Read More about A preoperative supervised exercise program potentially improves long-term survival after elective abdominal aortic aneurysm repair.

Provision of NICE-recommended varicose vein treatment in the NHS (2022)
Journal Article
Hitchman, L., Mohamed, A., Smith, G. E., Pymer, S., Chetter, I. C., Forsyth, J., & Carradice, D. (2023). Provision of NICE-recommended varicose vein treatment in the NHS. British journal of surgery, 110(2), 225-232. https://doi.org/10.1093/bjs/znac392

BACKGROUND: Standardization of access to treatment and compliance with clinical guidelines are important to ensure the delivery of high-quality care to people with varicose veins. In the National Health Service (NHS) in England, commissioning of care... Read More about Provision of NICE-recommended varicose vein treatment in the NHS.

Assessment of the diagnostic accuracy of automated ankle brachial pressure index devices in patients with diagnosed or suspected peripheral arterial disease: protocol for a systematic review and meta-analysis (2022)
Journal Article
Walshaw, J., Lathan, R., Huang, C., Staniland, T., Chetter, I., & Pymer, S. (2023). Assessment of the diagnostic accuracy of automated ankle brachial pressure index devices in patients with diagnosed or suspected peripheral arterial disease: protocol for a systematic review and meta-analysis. Journal of Vascular Societies Great Britain and Ireland, 2(2), 91-96. https://doi.org/10.54522/jvsgbi.2022.053

Background: The ankle brachial pressure index (ABPI) is a common diagnostic tool used in the assessment of peripheral arterial disease (PAD). The Doppler ultrasound technique is regarded as the gold-standard method for ABPI measurement; however, time... Read More about Assessment of the diagnostic accuracy of automated ankle brachial pressure index devices in patients with diagnosed or suspected peripheral arterial disease: protocol for a systematic review and meta-analysis.

Effects of exercise prescribed at different levels of claudication pain on walking performance in patients with intermittent claudication: a protocol for a randomised controlled trial (2022)
Journal Article
Birkett, S., Sinclair, J., Seed, S., Pymer, S., Caldow, E., Ingle, L., Harwood, A., & Egun, A. (2022). Effects of exercise prescribed at different levels of claudication pain on walking performance in patients with intermittent claudication: a protocol for a randomised controlled trial. Therapeutic Advances in Cardiovascular Disease, 16, https://doi.org/10.1177/17539447221108817

Background: Peripheral artery disease affects over 236 million people globally and the classic symptom is intermittent claudication (IC) which is associated with reduction in physical activity. The evidence that supervised exercise programmes (SEPs)... Read More about Effects of exercise prescribed at different levels of claudication pain on walking performance in patients with intermittent claudication: a protocol for a randomised controlled trial.

The Edinburgh Claudication Questionnaire has poor diagnostic accuracy in people with intermittent claudication (2022)
Journal Article
Ibeggazene, S., Cai, P. L., Smith, G. E., Ibbegazene, S., Stirrup, A., Pymer, S., Palmer, J., Cai, P., Smith, G., & Chetter, I. C. (in press). The Edinburgh Claudication Questionnaire has poor diagnostic accuracy in people with intermittent claudication. Vascular, https://doi.org/10.1177/17085381211059665

Background: The screening and diagnosis of intermittent claudication is a challenging process and often relies on the expertise of specialist vascular clinicians. We sought to investigate the diagnostic performance of the Edinburgh Claudication Quest... Read More about The Edinburgh Claudication Questionnaire has poor diagnostic accuracy in people with intermittent claudication.

A systematic review of exercise intervention reporting quality and dose in studies of intermittent claudication (2022)
Journal Article
Ibeggazene, S., Pymer, S., Birkett, S. T., Caldow, E., & Harwood, A. E. (in press). A systematic review of exercise intervention reporting quality and dose in studies of intermittent claudication. Vascular, https://doi.org/10.1177/17085381211070700

Background: Exercise therapy is an important treatment option for people with intermittent claudication (IC). Appropriate reporting of exercise interventions in populations with IC within randomised controlled trials (RCTs) is important to ensure tha... Read More about A systematic review of exercise intervention reporting quality and dose in studies of intermittent claudication.

Research priorities for patients with peripheral arterial disease: A James Lind Alliance Priority Setting Partnership (2022)
Journal Article
Pymer, S., Harwood, A., Long, J., Chetter, I., Saratzis, A., & Coughlin, P. (2022). Research priorities for patients with peripheral arterial disease: A James Lind Alliance Priority Setting Partnership. Journal of Vascular Societies Great Britain and Ireland, 1(2), 23-29. https://doi.org/10.54522/jvsgbi.2022.011

Introduction: Peripheral arterial disease (PAD) is a common health problem associated with reduced mobility, functional capacity and quality of life. Significant research exists in the field of vascular surgery, but its relevance to the research prio... Read More about Research priorities for patients with peripheral arterial disease: A James Lind Alliance Priority Setting Partnership.

A Systematic Review of Exercise Prescription in Patients with Intermittent Claudication: Does Pain Matter? (2021)
Journal Article
Seed, S., Harwood, A., Sinclair, J., Pymer, S., Caldow, E., Ingle, L., Egun, A., & Birkett, S. (in press). A Systematic Review of Exercise Prescription in Patients with Intermittent Claudication: Does Pain Matter?. Annals of vascular surgery, https://doi.org/10.1016/j.avsg.2021.06.025

Background: Current guidelines for intermittent claudication advocate exercise at moderate to maximal claudication pain. However, adherence rates to supervised exercise programmes (SEP) remain poor and claudication pain is a contributing factor. Limi... Read More about A Systematic Review of Exercise Prescription in Patients with Intermittent Claudication: Does Pain Matter?.

Provision of exercise services in patients with peripheral artery disease in the United Kingdom (2021)
Journal Article
Harwood, A. E., Pymer, S., Ibeggazene, S., Ingle, L., Caldow, E., & Birkett, S. T. (in press). Provision of exercise services in patients with peripheral artery disease in the United Kingdom. Vascular, https://doi.org/10.1177/17085381211035259

Objectives: Supervised exercise programmes (SEPs) are a vital treatment for people with intermittent claudication, leading improvements in walking distance and quality of life and are recommended in multiple national and international guidelines. We... Read More about Provision of exercise services in patients with peripheral artery disease in the United Kingdom.

An Updated Systematic Review and Meta-Analysis of Home-based Exercise Programmes for Individuals with Intermittent Claudication. (2021)
Journal Article
Pymer, S., Ibeggazene, S., Palmer, J., Tew, G., Ingle, L., Smith, G., Chetter, I., & Harwood, A. (2021). An Updated Systematic Review and Meta-Analysis of Home-based Exercise Programmes for Individuals with Intermittent Claudication. Journal of vascular surgery, 74(6), 2076-2085.e20

Objectives: Supervised exercise programmes (SEP) are effective for improving walking distance in patients with intermittent claudication (IC) but provision and uptake rates are sub-optimal. Access to such programmes has also been halted by the Corona... Read More about An Updated Systematic Review and Meta-Analysis of Home-based Exercise Programmes for Individuals with Intermittent Claudication..