| 1. |
- Costa, Eduardo L V, et al.
(författare)
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Bedside estimation of recruitable alveolar collapse and hyperdistension by electrical impedance tomography
- 2009
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Ingår i: Intensive Care Medicine. - : Springer Science and Business Media LLC. - 0342-4642 .- 1432-1238. ; 35:6, s. 1132-1137
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To present a novel algorithm for estimating recruitable alveolar collapse and hyperdistension based on electrical impedance tomography (EIT) during a decremental positive end-expiratory pressure (PEEP) titration. DESIGN: Technical note with illustrative case reports. SETTING: Respiratory intensive care unit. PATIENT: Patients with acute respiratory distress syndrome. INTERVENTIONS: Lung recruitment and PEEP titration maneuver. MEASUREMENTS AND RESULTS: Simultaneous acquisition of EIT and X-ray computerized tomography (CT) data. We found good agreement (in terms of amount and spatial location) between the collapse estimated by EIT and CT for all levels of PEEP. The optimal PEEP values detected by EIT for patients 1 and 2 (keeping lung collapse <10%) were 19 and 17 cmH2O, respectively. Although pointing to the same non-dependent lung regions, EIT estimates of hyperdistension represent the functional deterioration of lung units, instead of their anatomical changes, and could not be compared directly with static CT estimates for hyperinflation. CONCLUSIONS: We described an EIT-based method for estimating recruitable alveolar collapse at the bedside, pointing out its regional distribution. Additionally, we proposed a measure of lung hyperdistension based on regional lung mechanics.
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| 2. |
- Pinheiro de Lima, Edson, et al.
(författare)
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Framing operations and performance strategic management system design process
- 2008
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Ingår i: Brazilian Journal of Operations & Production Management. - 1679-8171. ; 5:1, s. 23-46
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Tidskriftsartikel (refereegranskat)abstract
- The increasing competitive pressure resulting from operations activities and marketglobalization are forcing enterprises to reorient their strategies, operations systemsand processes. Specifically, organizations are paying closer attention to the changingnature of operations systems performance, to the point where operations strategicmanagement system used in enterprise performance evaluation becomes the main focusof redesign projects. This study explores the process rationality behind operations strategymanagement systems design, taking into account a content definition established by astructural specification of the management system and the integration of life cycle andimplementation models. This research proposes a framework that represents reconciliationbetween research and practice, contributing to the development and test of practicalsolutions for operations strategic management system design, implementation andmanagement. The main result is a synthesis of three frameworks that each addresses thedesign process in different levels: the performance management system life cycle model;the process approach for guiding design and implementation issues; and recommendationsthat synthesizes the design task. The study also discusses methodological choices inapproaching the design, implementation and use of an operations strategic managementsystem. Doing so, the study develops the discussion on structural and process aspects ofstrategic performance measurement system design.
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| 3. |
- Pinheiro de Lima, Edson, et al.
(författare)
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Relying on the past and predicting the future : interrelating perspectives in Operations Strategic Management Systems
- 2007
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Ingår i: Proceedings of the 18<sup>th</sup> Annual Production and Operations Management Society Conference.
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Konferensbidrag (refereegranskat)abstract
- The complexity and dynamics of nowadays enterprises’ environments and operationssystems are demanding an integral approach for designing and implementing theiroperations’ strategic management and control systems. This integral approach should becapable to deal with the short and long term perspectives, helping the enterprises tomanage their positions, processes and paths for a sustainable development. This paper isa theoretical construction based on Operations Management and General Systems theory,intending to discuss and propose a new “architecture” for the strategic managementsystem of the operations function. The findings of the research project related in thispaper show the systemic representation of the functionalities and features that a strategicmanagement system for the operations function should develop to accomplish the relatedtask. The developed framework as theoretical construction is willing to review thecognitive and mental models that the operations managers are using for managing theoperations systems.
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