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Biomedical subjects

S Burn

Publications and source records attributed to S Burn.

11 recordsLinked to original sources

Neurosurgical trainees operative experience before and after introduction of the New Deal for junior doctors.

To compare operative experience before and after implementation of the New Deal to reduce junior doctors working hours, operative data was audited over a 6-month period. The three registrars with national training numbers in our unit were placed on two virtual working patterns to determine what their operative experience would have been over that 6-month period. Comparison with a 1980s trainee over a similar period was also made. Trainees on a 1:3 rota would have performed more emergency operations [32 (28 - 38)], than those on a partial shift [1:6 with following day off, 16 (13 - 23)]. Particular examples include trauma craniotomies 13 (9 - 15) versus 6 (3 - 11) and CSF diversion, 9 (2 - 13) versus 4 (2 - 7). Although trainees on a 1:3 on call rota would have had more emergency operative experience over the same period of time, less common procedures, such as lumber decompression for cauda equina syndrome, were equally distributed between both groups. Trainees doing the partial shift would have lost 18 (12 - 24) elective cases over the same period as a result of enforced absence following periods of duty. These included posterior fossa, complex spinal, benign and rare cranial procedures. The increasingly common option of employing juniors on a full shift rota would have an even greater impact on training. Trainees are unavailable for elective training on night shift and then for a compensatory period afterwards, doubling the time spent away from formal surgical training. Indiscriminate reduction in working hours by enforced absence for compensatory rest has a potentially deleterious impact on elective training. By reducing the out of hours commitment trainees have a reduced, but possibly acceptable, exposure to emergency neurosurgery without impact on elective training.

Clinical Competence↗

Sustainable management of leakage from wastewater pipelines.

Wastewater pipeline leakage is an emerging concern in Europe, especially with regards to the potential effect of leaking effluent on groundwater contamination and the effects infiltration has on the management of sewer reticulation systems. This paper describes efforts by Australia, in association with several European partners, towards the development of decision support tools to prioritize proactive rehabilitation of wastewater pipe networks to account for leakage. In the fundamental models for the decision support system, leakage is viewed as a function of pipeline system deterioration. The models rely on soil type identification across the service area to determine the aggressiveness of the pipe environment and for division of the area into zones based on pipe properties and operational conditions. By understanding the interaction between pipe materials, operating conditions, and the pipe environment in the mechanisms leading to pipe deterioration, the models allow the prediction of leakage rates in different zones across a network. The decision support system utilizes these models to predict the condition of pipes in individual zones, and to optimize the utilization of rehabilitation resources by targeting the areas with the highest leakage rates.

Decision Making↗

New proposals for training in neurosurgery.

The rapidly evolving changes in working patterns, career structure and the regulation of training of doctors have provided an ideal opportunity for proposals to improve the programme for the training of neurosurgeons. The Education and Training Committee of the Society of British Neurological Surgeons (D.G. Hardy, A. J. W. Steers, N. T. Gurusinghe, P. M. Foy, P. van Hille, R. A. Cowie, H. A. Crockard, O. Sparrow and S. Burn) has, in recent months, worked closely with the Specialist Advisory Committee (SAC) in neurosurgery, Department of Health (Modernizing Medical Careers Group, H. A. Crockard, A. Havers, T. Hobbs) and colleagues from the major neuroscience specialties to develop a new programme based on a 'Common Stem' approach. This article describes the principles of the programme. The proposals have received approval by the Council of the SBNS, the Presidents of the four Surgical Royal Colleges and the Senate of Surgery.

Curriculum↗

Cardiac syncope due to transient coronary artery occlusion: the role of percutaneous angioplasty.

A case of cardiac syncope is presented, associated with single vessel coronary disease. The mechanism of the syncope would appear to be a ventricular arrhythmia with transmural myocardial ischaemia due to transient occlusion of the diseased coronary artery. The symptoms and electrocardiographic abnormalities were reproduced and subsequently abolished by percutaneous coronary angioplasty.

Angina Pectoris, Variant↗

Stress echocardiography.

Stress echocardiography has now emerged from the days of research and clinical evaluation to take its place alongside other non-invasive imaging methods in coronary artery disease. It is safe, versatile, and clinically accurate. It has been validated against radionuclide perfusion imaging; the cost and convenience advantages for echocardiography must be balanced against the greater automaticity and probable sensitivity (in single-vessel disease) of perfusion imaging. There is a definite 'learning curve' for stress echo--both in the practice of image acquisition and in interpretation. The choice between these two techniques will often be determined by local availability and demand. However, the addition of a stress echo service to a modern ECG department is likely to be considerably cheaper than the cost of a new gamma camera and radio-pharmacy service. A recent editorial called for a 'critical reappraisal' of stress echo and its application in the UK. The increasing availability of the necessary hardware and software for the newer echocardiography machines is likely to accelerate this process in the near future. A more recent application for the technique is in the determination of contractile reserve and 'viability' in patients with poor LV function and IHD, using low-dose dobutamine regimens. Stress echocardiography is therefore likely to occupy an expanding role in the management of patients with coronary artery disease, as an adjunct to the exercise ECG.

Echocardiography↗

Myocardial hibernation.

Myocardial hibernation is a potentially reversible cause of resting left ventricular dysfunction in some patients with coronary artery disease. Successful revascularisation in these patients can lead to improved ventricular function and hence improved prognosis. This review discusses the pathophysiology of myocardial hibernation and the methods that are currently available to detect it.

Coronary Circulation↗

Non-Hodgkins lymphoma presenting with evidence of right ventricular outflow tract obstruction.

Anterior mediastinal tumours have been reported that initially presented with signs suggestive of cardiac disease. The widespread availability of two-dimensional echocardiography has demonstrated that, in the majority of cases, right ventricular compression is the major cardiac complication of such masses. We report two cases of mediastinal lymphoma that presented with chest pain and signs of right ventricular outflow obstruction.

Adult↗