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Biomedical subjects

T Kehoe

Publications and source records attributed to T Kehoe.

6 recordsLinked to original sources

From technical quality assurance of radiotherapy to a comprehensive quality of service management system.

BACKGROUND AND PURPOSE: A hierarchy of dosimetry, planning and machine performance checks and evaluations of clinical outcomes have been widely used in radiotherapy for decades. Procedures, codes of practice and guidance are readily available on the 'technical aspects' of radiotherapy treatments, maintenance of which is achieved by quality control checks within a quality assurance approach to radiotherapy. Recently a series of high profile, well-publicised treatment 'accidents' resulting in damage to patients have focused the attention of both professionals and the public. There is now pressure to introduce formal quality management systems. Patients and their relatives/carers are having their expectations raised but their definition of a quality service differs from that generally considered by the oncology professionals. Most departmental managers and staff have wide experience of quality control checks. They understand the philosophy of quality assurance. However the idea of formal quality systems/quality management is alien to them. What is a professional/departmental manager to do? MATERIALS AND METHODS: This paper addresses that question by discussing the underlying principles of quality management covering service provision as well as technical radiotherapy treatment delivery and by providing some guidance based on experience in the practical implementation of quality management through three stages of development: a QA programme incorporating checks on essential parts of the technical treatment delivery, a formal documented certified QA system focusing on technical treatment delivery, a comprehensive quality management system covering all parts of a service. RESULTS AND CONCLUSIONS: One possible action plan is provided indicating progress through the three stages of development based on experience in one large Radiation Oncology Department. With planning, resources and commitment, a comprehensive quality of service management system is achievable in radiotherapy.

Education, Professional↗

Accelerated recombinant protein purification process development automated, robotics-based integration of chromatographic purification and analysis.

Recovery of recombinant proteins from endogenous, host molecules can be an experimentally intensive and time-consuming task. Often the time to analyze material during development of recovery procedures is the rate-limiting step. Nowadays, modern techniques and equipment are being specifically engineered to make this effort much more efficient. We present a case study to illustrate how a new, automation tool, designed for easy, systematic methods development, can be used for very rapid process and analytical optimization. This tool uses robotics to integrate process development with rapid LC-based analysis requiring no user intervention. The methods and procedures described can be generalized to any recombinant protein recovery campaign.

Chromatography, High Pressure Liquid↗

Respiratory effects of live influenza virus vaccine: healthy older subjects and patients with chronic respiratory disease.

Twenty-one healthy, middle-aged volunteers and 8 patients with chronic lung disease were given live, attenuated influenza virus vaccine by nasal spray. Forced vital capacity, 1-sec forced expiratory volume, ratio of 1-sec forced expiratory volume to forced vital capacity, residual volume, ratio of airway conductance to lung volume, maximal expiratory flows after exhalation of 50 and of 75 per cent of the forced vital capacity, closing volume, slope of Phase III, volume of isoflow, single-breath diffusing capacity for CO, and arterial blood gases were measured before and 3, 7, 10, and 21 days after exposure. Vaccination was well tolerated by the healthy volunteers without change in pulmonary function. In contrast, the patients tended to develop increased respiratory symptoms and had a slight decrease in mean forced expiratory volume in 1 sec 3 weeks after vaccination.

Administration, Intranasal↗