Platelet Activity Measured by VerifyNow® Aspirin Sensitivity Test Identifies Coronary Artery Bypass Surgery Patients at Increased Risk for Postoperative Bleeding and Transfusion.

BACKGROUND: Identifying predictors of bleeding in patients before coronary artery bypass grafting surgery is important, given the complications of bleeding and finite supply of blood. Patient response to aspirin is heterogeneous and can be evaluated using point-of-care platelet function tests. We postulated that patients who hyper-respond to aspirin given preoperatively, as identified by VerifyNow® Aspirin assay (Accumetrics, Inc., San Diego, CA, USA), are at increased risk of bleeding and transfusion. METHODS: This prospective pilot study examined response to aspirin in patients undergoing coronary artery bypass grafting surgery (n = 61) from 2009 to 2013. Patients with aspirin reaction unit (ARU) values in the lower 50th percentile as identified by VerifyNow® assays were defined as aspirin hyper-responders. The proportion of patients transfused and the median adjusted indexed drop in haemoglobin were compared between aspirin hyper-responders and non-hyper-responders. Logistic regression was performed to determine factors associated with increased risk of transfusion. RESULTS: Seventy per cent (70%) of aspirin hyper-responders were transfused perioperatively compared with 39% of patients who did not hyper-respond, (OR 3.694, 95% CI 1.275-10.706, p = 0.014). VerifyNow® Aspirin hyper-responders had a greater median adjusted indexed drop in haemoglobin compared to non-hyper-responders (34.1 g/L versus 26.6 g/L respectively, p = 0.032). Multivariate analysis also showed VerifyNow® Aspirin hyper-response to be an independent predictor of transfusion (p = 0.016). Other variables such as age, gender, body mass index, renal insufficiency, and cross clamp and bypass times were not predictors of postoperative bleeding in this pilot cohort. CONCLUSIONS: VerifyNow® Aspirin is able to preoperatively identify aspirin hyper-responders at an increased risk of bleeding and subsequent transfusion in the context of coronary artery bypass graft surgery.

An ideal hospital.

Purpose The purpose of this paper is to explore a novel overarching strategy in tackling the key issues raised by the recent inquiry into bullying, harassment and discrimination in surgical practice and surgical training in Australian and New Zealand hospitals. Design/methodology/approach The approach taken is an analysis of the available evidence-based literature to inform the proposed viewpoint. The theoretical subject scope presented is a discussion of how and why the various strategies put forward in this paper should be integrated into and led from an overarching workforce engagement platform. Findings The key themes isolated from the Inquiry into Australian and New Zealand surgical practice ranged from abuse of power by those in leadership positions, gender inequity in the surgical workforce, opaque and corrupt complaints handling processes, excessive surgical trainee working hours to bystander silence secondary to a fear of reprisal. A workforce engagement perspective has elicited the potential to counter various impacts, that of clinical ineffectiveness, substandard quality and safety, inefficient medical workforce management outcomes, adverse economic implications and the operational profitability of a hospital. Generic strategies grounded in evidence-based literature were able to then be aligned with specific action areas to provide a new leadership framework for addressing these impacts. Originality/value To the author's knowledge, this is one of the first responses providing a framework on how medical managers and hospital executives can begin to lead a comprehensive and practical strategy for changing the existing culture of bullying, harassment and discrimination in surgical practice by using a staff engagement framework.

In sight, in mind: retailer compliance with legislation on limiting retail tobacco displays.

We investigated retailer compliance with point-of-sale display legislation, using a New Zealand region as a case study. An observational survey was conducted of nonspecialist tobacco retailers in the lower North Island of New Zealand during 2006. Compliance was assessed in relation to store type (dairies, convenience stores, supermarkets, and service stations) and by characteristics of the population of the census area unit in which the store was situated. These characteristics include the level of socioeconomic deprivation and proportions of Maori (indigenous New Zealanders), Pacific Islanders, and children aged less than 19 years. Out of the 288 stores surveyed, 185 (64%) had at least one breach of the point-of-sale regulations. The most common breaches were a failure to display a "Smoking Kills" sign, visibility of tobacco from outside the premises, and displaying tobacco less than 1 m from children's products. Compliance was significantly worse in dairies (small local general stores) and convenience stores. Stores situated in areas in the top quartile for the proportion of children were much more likely to have high levels of noncompliance (> or =3 breaches) and to display tobacco products close to children's products. This study is one of very few to systematically investigate retailer compliance with point-of-sale display regulations for tobacco products. The results suggest that the implementation of legislation to partly limit retail displays of tobacco products can be difficult. A ban on retail displays of tobacco products is likely to be a more effective and enforceable policy.