The effects of ischaemic conditioning on lung ischaemia-reperfusion injury.

Ischaemia-reperfusion injury (IRI) encompasses the deleterious effects on cellular function and survival that result from the restoration of organ perfusion. Despite their unique tolerance to ischaemia and hypoxia, afforded by their dual (pulmonary and bronchial) circulation as well as direct oxygen diffusion from the airways, lungs are particularly susceptible to IRI (LIRI). LIRI may be observed in a variety of clinical settings, including lung transplantation, lung resections, cardiopulmonary bypass during cardiac surgery, aortic cross-clamping for abdominal aortic aneurysm repair, as well as tourniquet application for orthopaedic operations. It is a diagnosis of exclusion, manifesting clinically as acute lung injury (ALI) or acute respiratory distress syndrome (ARDS). Ischaemic conditioning (IC) signifies the original paradigm of treating IRI. It entails the application of short, non-lethal ischemia and reperfusion manoeuvres to an organ, tissue, or arterial territory, which activates mechanisms that reduce IRI. Interestingly, there is accumulating experimental and preliminary clinical evidence that IC may ameliorate LIRI in various pathophysiological contexts. Considering the detrimental effects of LIRI, ranging from ALI following lung resections to primary graft dysfunction (PGD) after lung transplantation, the association of these entities with adverse outcomes, as well as the paucity of protective or therapeutic interventions, IC holds promise as a safe and effective strategy to protect the lung. This article aims to provide a narrative review of the existing experimental and clinical evidence regarding the effects of IC on LIRI and prompt further investigation to refine its clinical application.

Improving Thoracic Surgery Ward Round Quality and Enhancing Patient Safety in a Referral Centre.

Introduction Ward rounds are vital clinical processes that facilitate an opportunity for daily review and management of thoracic surgery inpatients. The aim of this study was to compare thoracic surgery ward round documentation against locally agreed standards and design a template to improve the detail and uniformity of this process to enhance patient care. Materials and methods Data for this audit was collected retrospectively and prospectively. Data was collected during three auditing periods and managed on Microsoft Excel. Descriptive statistics were used for its analysis. Chi-square and Fisher's Exact tests were used to test for differences in reporting rates. Results and discussion Initially, a total of 199 ward round notes were reviewed. Imaging results (19%) and discharge planning (23%) were not reported. eCARE (electronic Clinical Assessment for Round Evaluation) was developed to ensure that all aspects of patient evaluation recommended by the guidelines were included. Reporting rates significantly improved after such changes. We analysed the effect of the new ward round note on discharge planning (23.3 vs 41%, p<0.001), complication rates (32.6 vs 21.9%, p=0.03), post-surgical length of stay (LOS) (7.0 vs 5.0, p<0.001). Conclusion Over a year, we audited the Thoracic Surgery Department's ward round documentation against locally agreed standards in line with national recommendations. Several important items were not regularly reported. Using closed-ended questions improved reporting rates, and patient care was optimised. Further research should explore the impact of this new documentation method on patient care and postoperative outcomes in our Trust as well as other cardiothoracic centres.