Perioperative transfusion management in craniotomies: A national survey, a starting point for the evaluation of improvements in health care.

Objective: To assess the perioperative management of haemostasis and transfusion practices in adult patients undergoing craniotomies.

Method: Online questionnaire addressed to Spanish anaesthesiologists and promoted by the Neurosciences and Haemostasis, Transfusion Medicine and Fluid Therapy Sections of SEDAR. The questionnaire was sent by email and social media, and was active between June and October 2022.

Patient Blood Management: A conceptual and analytical vision from the leadership in Spain.

The evolution of blood saving programs to Patient Blood Management (PBM) represents a broader and more comprehensive approach to optimize the use of the patient's own blood, thus improving clinical outcomes and minimizing the risks associated with allogeneic blood transfusion with a holistic view of socio-economic sustainability. Implementing the strategies of the three PBM pillars in any hospital center involves a transversal change throughout the organization in which it can be very useful to apply the strategy defined by Kotter at the business level for change management. The support of renowned institutions such as the World Health Organization and the European Commission demonstrates the importance and urgency of implementing PBM programs, setting guidelines at an international level and supporting the adoption of effective strategies in the management of blood transfusion at a national and institutional level.

On the influence of structural and chemical properties on the elastic modulus of woven bone under healing.

Introduction: Woven bone, a heterogeneous and temporary tissue in bone regeneration, is remodeled by osteoblastic and osteoclastic activity and shaped by mechanical stress to restore healthy tissue properties. Characterizing this tissue at different length scales is crucial for developing micromechanical models that optimize mechanical parameters, thereby controlling regeneration and preventing non-unions.

Methods: This study examines the temporal evolution of the mechanical properties of bone distraction callus using nanoindentation, ash analysis, micro-CT for trabecular microarchitecture, and Raman spectroscopy for mineral quality.

Rule-based energy management strategies for PEMFC-based micro-CHP systems: A comparative analysis.

Commercial PEMFC-based micro-CHP systems are operated by rule-based energy management strategies. Each of these strategies constitutes a different way to meet the household energy demand (following the heat demand, following the electricity demand, the maximum of the two, etc.).