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Percutaneous heart valve implantation is an innovative, minimally invasive alternative to open-heart surgery for treating valvular heart disease. Over the last 10 years, research at UCL has advanced the original method of minimally invasive valve implantation in the pulmonary position. Over 5,000 patients have now benefitted from this procedure and have therefore avoided open-heart surgery. The research has been used for regulatory approval of the Melody™ device in Europe and Canada (CE marking) and has led to FDA approval in the USA for both the device and procedure and NICE approval in the UK.
University of Bristol researchers at the Bristol Heart Institute (BHI) have pioneered the development and clinical take-up of the novel technique of off-pump coronary artery bypass (OPCAB) surgery. Over ten clinical trials and several large cohort analyses have assessed the impact of this technique on elective and high-risk patients. The results have shown that it is as safe as the conventional coronary artery bypass grafting (CABG) technique that uses a cardiopulmonary bypass pump and cardioplegic arrest. Most importantly, however, OPCAB significantly reduces the risk of post-operative complications, and reduces morbidity and mortality. It also uses less hospital resources, reducing time in intensive care and length of hospital stay. In 2011 (the last year for which data are available), 20% of CABG operations in the UK were carried out with the OPCAB technique and it has had significant take-up overseas (for example, 18% of CABG operations in the US and 21% in the EU in 2010). NICE has recommended the safety and efficacy of OPCAB surgery.
The Variable Life-Adjusted Display (VLAD) is a graphical tool for monitoring clinical outcomes. It has been widely adopted by UK cardiac surgery centres, and has helped a shift in culture towards more open outcome assessment in adult cardiac surgery, which has been credited with reduced mortality rates. VLAD is also being used for a broad range of other clinical outcomes by regulatory bodies worldwide. For example, Queensland Health uses VLAD as a major part of its Patient Safety and Quality Improvement Service to monitor 34 outcomes across 64 public hospitals, and NHS Blood and Transplant uses VLAD to monitor early outcomes of all UK transplants.
A team of biomedical engineers at UCL has developed a non-invasive growing implant that improves the health and quality of life of young patients who have suffered from certain bone cancers. The prosthesis avoids the costly and invasive surgical interventions of previous treatment. Instead, the prosthesis can be lengthened in a quick and pain-free procedure conducted at an outpatient clinic. As a result, it reduces the costs of bone reconstruction and growing by around £19,000 per patient, as well as reducing the risk of infection and subsequent treatment. Since 2008, more than 400 devices have been sold; in addition to the cost savings indicated above these devices have generated more than £6 million income for UCL spin-out company Stanmore Implants Ltd, which was sold for £10 million in 2008.
Many hand surgical units worldwide have routinely used night-time splints in all patients after Dupuytren's contracture fasciectomy and dermo-fasciectomy, despite the lack of robust evidence to support its use.
Jerosch-Herold's programme of research identified that routine night-time splinting for all patients after fasciectomy or dermo-fasciectomy surgical treatments for Dupuytren's contracture is not beneficial. This finding is changing clinical practice, and informing guidelines and policies in the UK, New Zealand and the USA. As a result, health care organisations are ceasing to prescribe routine night-time splinting. This reduces inconvenience and discomfort for patients, relieves pressure on services and generates financial savings, all whilst maintaining equally good clinical outcomes.
The reach of the research findings impact is high, as Dupuytren's contracture is a common disorder of people of Northern European ancestry which results in surgical interventions for thousands of people annually (13,000 pa in the UK alone).
Researchers at the University of Bristol challenged 100 years of dogma, using meta-analysis; finding that feeding people within 24 hours of gastrointestinal surgery is safe, with fewer infections and a shorter hospital stay. This evidence is enshrined in Enhanced Recovery After Surgery programmes (2009, 2012) being rolled out across the UK benefiting patients and the health service. In 2009 The Dutch Institute of Healthcare Improvements considered these data and Cochrane update to `show unequivocally that early feeding after colonic surgery is feasible and safe'. Their project successfully introduced early feeding to over one quarter of all Dutch hospitals.
Original research carried out by The University of Nottingham has shown that both knowledge and practice related to perioperative fluid prescribing was poor, resulting in significant and avoidable postoperative morbidity. We have shown that maintaining patients in as near a state of zero fluid balance as possible reduces hospital stay by 3.4 days and complication rate by 41%. Our work guided the formulation of the British Consensus Guidelines and NICE Guidelines on intravenous fluid therapy for adult surgical patients. It has also reduced the frequency of postoperative fluid overload, and led to improved patient outcome and potential financial benefits of £122m per year for NHS England.
Sudden cardiac death causes 4.5 million deaths worldwide each year many of which could be prevented by implantable cardioverter defibrillators (ICDs), but these also carry risks. Research in the groups of Huang and Grace has led to diagnostic assays offering three times the predictive accuracy of current approaches in guiding cardiologists concerning indications for ICD implantation. The assay has been clinically trialled; since 2008, through the trial, the lives of three patients identified by the assay as at high risk were saved. Further work led by Grace and colleagues provided an improved, subcutaneous ICD (SICD); Grace also participated in a US-based clinical trial (NCT00399217) providing the evidence required for FDA approval supporting also later inclusion into NICE guidance. Since 2008 the SICD has been implanted in over 2500 patients in 16 countries.
Every year in the UK, 150,000 heart attacks are caused by coronary artery occlusion (blockage); worldwide, the figure is 17 million, according to the World Health Organization (WHO). Since 1993, the Leicester Interventional Cardiology group has been at the forefront of research to determine how best to manage such patients. Its findings have been incorporated into official UK (2008), European (2008, 2012) and US (2008) guidelines and have helped to change the way coronary heart disease and heart attacks are treated, with the number of patients treated with primary angioplasty doubling between 2008 and 2011. By guiding service provision, supporting industrial innovation and informing clinical practice, the Unit has contributed to improved healthcare and outcomes for thousands of heart patients. Overall, one-month mortality according to European figures has fallen from 15% to 4% between 2008 and 2013.
Narrowing of one of the carotid arteries in the neck (carotid stenosis) is an important cause of stroke, a major public health problem. The results of an international multicentre randomised clinical trial, organised and led by Professor Martin Brown at the UCL Institute of Neurology, have been incorporated into national and international guidelines on the treatment of carotid stenosis. The trial evaluated carotid artery stenting (CAS), a new treatment to prevent stroke from carotid stenosis, in comparison to the standard treatment, carotid endarterectomy (CEA) (carotid surgery). The number of patients treated by CAS in England did not increase between 2006 and 2012, whereas the numbers of patients treated by CEA increased by 30%, a finding consistent with a response to the findings of our trials indicating that CEA was safer than CAS.