Michael A Piza

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OBJECTIVE To establish the rate of and reasons for cancellations of surgery on the scheduled day in an Australian hospital. DESIGN Prospective survey. SETTING Major metropolitan tertiary hospital, 13 May to 15 November 2002. MAIN OUTCOME MEASURES Proportion of operations cancelled on the day of surgery, obtained each day from the operating theatre(More)
PURPOSE The purpose of the study was to evaluate the time taken for delivery of each component of care following patient deterioration and to assess the effect on response times of strategies implemented to improve the system. METHODS A model identifying the sequence of organizational responses following a patient's unexpected clinical deterioration was(More)
The multitemporal behavior of soil loss by surface water erosion in the hydrographic basin of the river Mourão in the center-western region of the Paraná state, Brazil, is analyzed. Forecast was based on the application of the Universal Soil Loss Equation (USLE) with the data integration and estimates within an Geography Information System (GIS)(More)
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