Myocardial ischemic arrest, using a cold crystalloid cardioplegic solution, decreases intracellular concentrations of glutamate (from 6.2 +/- 0.5 to 4.5 +/- 0.45 micromol/g wet weight, n = 19, P < 0.05) and ATP (from 3.0 +/- 0.4 to 1.9 +/- 0.3 micromol/g wet weight, n = 9, P < 0.05) but not aspartate. After 20 min of normothermic reperfusion, the fall in glutamate and ATP was maintained (4.5 +/- 0.52 and 2.0 +/- 0.2 micromol/g wet weight, respectively), and there was a fall in aspartate (from 1.32 +/- 0.12 to 0.9 +/- 0.1 micromol/g wet weight). Myocardial arrest with cold blood cardioplegic solution did not cause a significant fall in tissue ATP, glutamate, or aspartate. However, after reperfusion all three fell significantly. With the exception of a fall in tissue valine during ischemia with cold crystalloid cardioplegic solution and a rise in alanine during ischemia with cold blood cardioplegic solution, there were no significant changes in tissue alanine, valine, leucine, or isoleucine during ischemia or after reperfusion using crystalloid or blood cardioplegic solutions. This work documents the changes in the intracellular concentrations of important metabolites in the hearts of patients undergoing coronary artery surgery using different myocardial protection techniques.
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NHS R&D HTA ProgrammeT he research findings from the NHS R&D Health Technology Assessment (HTA) Programme directly influence key decision-making bodies such as the National Institute for Clinical Excellence (NICE) and the National Screening Committee (NSC) who rely on HTA outputs to help raise standards of care. HTA findings also help to improve the quality of the service in the NHS indirectly in that they form a key component of the 'National Knowledge Service' that is being developed to improve the evidence of clinical practice throughout the NHS.The HTA Programme was set up in 1993. Its role is to ensure that high-quality research information on the costs, effectiveness and broader impact of health technologies is produced in the most efficient way for those who use, manage and provide care in the NHS. 'Health technologies' are broadly defined to include all interventions used to promote health, prevent and treat disease, and improve rehabilitation and long-term care, rather than settings of care.The HTA programme commissions research only on topics where it has identified key gaps in the evidence needed by the NHS. Suggestions for topics are actively sought from people working in the NHS, the public...
Twenty-three patients were reviewed an average of 5.3 years after a closed palmar fasciotomy for the correction of Dupuytren's contracture. Results suggest that this procedure is best suited to those whose contracture is mainly at the MP joint and that approximately 55% of such patients can expect the correction to be maintained for at least five years. In those patients with severe deformity affecting the PIP joint in addition to the MP joint, this may be a useful preliminary procedure, but is unlikely to be of any long term benefit.
Elective surgery of the ascending aorta/arch was associated with low mortality. Outcomes after emergency surgery conformed to contemporary expectations. Only limited differences were identified both with respect to the case profile and early clinical outcomes. Better outcomes in the mid-term in the higher volume group persisted despite adjustment for differences in caseload and are worthy of further study. We believe that these data support our hypothesis that dissemination of appropriate techniques among a group of surgeons represents the most practical method of service provision.
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