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Meet the team

The Perioperative Medicine Team

We are a team of Consultant Anaesthetists and Specialist Nurses. Anaesthetists are specially trained doctors with a range of roles includi the preoperative preparation of surgical patient, the resuscitation and stabilisation of patients in the Emergency Department, actute pain management, intensive care medicine and the provision of sedation and anaesthesia for patients undergoing surgical procedures. 

Dr Yates

Dr David Yates: Consultant Anaesthetist

Dr Yates has been a Consultant in Anaesthesia and Critical Care Medicine at York Teaching Hospital since August 2008. His clinical work involves running a pre-assessment clinic, anaesthesia for major general and vascular surgery and intensive care medicine. Current interests include the identification and management of the high-risk surgical patient, regional anaesthesia and improving patient safety.

Dr Yates is the Anaesthesia, Perioperative Medicine and Pain Specialty Lead for the Yorkshire and Humber Clinical Research Network and his research interests include measuring outcomes after major surgery, improving patient fitness prior to surgery and the use of cardiopulmonary exercise testing for risk stratification.

Dr Davies

Dr Simon Davies: Consultant Anaesthetist

Dr Davies has been a Consultant in anaesthesia and perioperative care at York Teaching Hospital since 2010. His main clinical work includes working in a busy pre-operative assessment clinic with a strong emphasis on cardiopulmonary exercising testing for pre-operative risk assessment, and provides anaesthesia for major general and vascular surgery.

Having completed his postgraduate doctorate, his maintains a strong clinical research interest. Current research interests include haemodynamic optimisation of high-risk fractured neck of femurs, protocolisation of post-operative therapy, validity of non-invasive haemodynamic monitoring, the measurement of postoperative outcomes, cardiopulmonary exercise testing (CPET) and the role of biomarkers in predicting perioperative risk.

Dr Wilson

Dr Jonathan Wilson: Consultant Anaesthetist

Dr Wilson has been a Consultant Anaesthetist at York Hospital since April 1995. Prior to this he completed Anaesthetic training in the Royal Army Medical Corps.

Dr Wilson has research interests in improving outcomes for high-risk surgical patients, particularly with regard to strategies of optimising oxygen delivery and tissue perfusion, choice of fluids for optimisation, and identification of high-risk patients through cardio-pulmonary exercise testing.

Over the last 11 years he has established a cardio-pulmonary exercise testing service to assess risk in patients scheduled for major surgery. He was also the Chief Investigator for a local double-blind RCT comparing crystalloid to starch colloid for goal-directed fluid therapy in colorectal surgery.

Dr Stone

Dr Michael Stone: Consultant Anaesthetist

Dr Stone started as a consultant at York in September 2003 and has a specialist interest in the perioperative care of high risk elective patients.  

'As Anaesthetists we are in an ideal position to take an overview of the whole perioperative pathway, and this will further improve outcomes for our high risk elective patients.’

Dr Walkington

Dr James Walkington: Consultant Anaesthetist

Dr Walkington has been a Consultant Anaesthetist at York Teaching Hospital since February 2014. His primary clinical work includes major general and vascular anaesthesia, including patient risk stratification based on cardiopulmonary exercise testing results.

He is a year one clinical tutor for the Hull York Medical School, York anaesthetic Foundation Trainee coordinator and a faculty member on national simulation courses.

Dr Redman

Dr Jonathan Redman: Consultant Anaesthetist

Dr Redman has been a Consultant in Anaesthesia and Critical Care Medicine at York Teaching Hospital since 2003.  He was Lead Clinician for Critical Care from 2012-2014. He had special interests in high risk surgical patients, patient safety and bariatric surgery and is currently a committee member for the SOBA Society of Bariatric Anaesthesia.

Dr Kanakaraj

Dr Mutharaj Kanakaraj: Consultant Anaesthetist

Dr Kanakaraj has been a Consultant in Anaesthesia since February, 2014. Having introduced to cardiopulmonary exercise testing and perioperative management of high risk surgical patients while in training, Dr Kanakaraj is a developing perioperative physician, with special interests in major general surgery, vascular surgery and regional anaesthesia. His current work includes introducing pre-operative incentive spirometer in patients undergoing major general surgery.

Dr Biddulph

Dr Jamie Biddulph: Consultant Anaesthetist

Jamie Biddulph has been a consultant anaesthetist at York teaching hospital since January 2014. His main clinical work involves providing anaesthesia for bariatric and major general surgery and being a member of the perioperative medicine team. He has an interest in patient safety and is the joint ACSA lead in York which achieved accreditation in January 2017.

Katie Ayyash

Dr Katie Ayyash: Consultant Anaesthetist

Dr Ayyash has recently been appointed Consultant Anaesthetist at York Teaching Hospital in April 2017. She has a specialist interest in Perioperative Medicine and is currently undertaking a Master's Degree in Perioperative Medicine at University College London. Her clinical work involves running a pre-assessment clinic, anaesthesia for major general and vascular surgery and regional anaesthesia.

She has participated in a number of National and Regional clinical research projects and her current research interest is in the correlation of nutritional scoring systems with outcomes in patients undergoing major vascular surgery. She is avidly involved in teaching and organisation of courses for the Fellowship of the Royal College of Anaesthesia exam and is a year one clinical tutor for the Hull York Medical School.


Zoe Murphy: Perioperative Specialist Nurse

Zoe has worked for the NHS for 16 years and qualified as a Registered Nurse in 2010. Zoe worked in clinical research for 5 years prior to joining the Perioperative Medicine Team.

Dr Knock

Dr James Knock: Consultant Anaesthetist

Dr Knock is the most recent addition to the team having joined in October 2017. His clinical work includes providing anaesthesia for major colorectal and vascular surgery, and he is looking forward to developing his skills in Cardiopulmonary Exercise Testing.  Current research interests include glycaemic control in the perioperative period, and the association between frailty and perioperative outcomes.  He is currently undertaking a Master’s degree in Perioperative Medicine at University College London.

Sara Ma

Sara Ma

Sara worked with the team between 2015 and 2018 as a Perioperative Specialist Nurse and is currently on secondment in the Intensive Care Unit at York Teaching Hospital.

She has a recently completed her Msc Nursing exploring the incremental value of preoperative brain natriuretic peptide in combination with cardiopulmonary exercise testing in predicting risk of cardiac adverse events after major elective abdominal surgery for her thesis. She has a clinical background in critical care nursing and has undertaken a critical care nursing course at Kings College London. She worked as a research nurse for the Anaesthetic and Critical Care Department at York prior to her role as a Clinical Nurse Specialist.