Enveloping algebras of Malcev algebras

We first discuss the construction by Perez-Izquierdo and Shestakov of universal nonassociative enveloping algebras of Malcev algebras. We then describe recent results on explicit structure constants for the universal enveloping algebras (both nonassociative and alternative) of the 4-dimensional solvable Malcev algebra and the 5-dimensional nilpotent Malcev algebra. We include a proof (due to Shestakov) that the universal alternative enveloping algebra of the real 7-dimensional simple Malcev algebra is isomorphic to the 8-dimensional division algebra of real octonions. We conclude with some brief remarks on tangent algebras of analytic Bol loops and monoassociative loops. This is a revised and expanded version of the survey talk given by the first author at the Second Mile High Conference on Nonassociative Mathematics at the University of Denver (Denver, Colorado, USA, June 22 to 26, 2009).Comment: 15 page

Right coronary artery-to-pulmonary artery fistula, the role of echocardiography

Coronary artery fistula is an uncommon but hemodynamically significant anomaly of the coronary arteries, occurring as an incidental finding in 0.1% to 0.2% of coronary angiograms. Although half of the patients with a coronary artery fistula remain asymptomatic, the other half develops CHF, infective endocarditis, myocardial ischemia, or rupture of an aneurysm. This report is illustrative of the right coronary artery fistula to the right pulmonary artery in a 57-year-old male. The definitive diagnosis was made during transesophageal echocardiography and confirmed at operation

Frequency and potential causes of medication errors from nurses� viewpoint in hospitals affiliated to a medical sciences University in Iran

Purpose: The purpose of this paper is to investigate the prevalence of medication errors (MEs) and the factors affecting them among nurses of hospitals affiliated to Kurdistan University of Medical Sciences (KUMS) in 2016. Design/methodology/approach: This is a cross-sectional and descriptive-analytic study. In total, 503 nurses were selected using census method from six hospitals affiliated to KUMS. A self-constructed questionnaire was employed to collect information on nurses� socio-demographic characteristics (6 items), the prevalence and type of MEs (21 items) and their perceptions about the main causes of MEs (40 items). Data were collected from August 15 to October 15, 2016. In addition, nonparametric and linear regression tests were used to describe the descriptive statistics and analyze the data. Findings: The response rate was 73 percent and the monthly reported MEs per nurse was 6.27±11.95. Giving medication at non-scheduled time (28.4 percent), giving multiple oral medications together (22.4 percent) and giving painkillers after operation without physician�s prescription (15.3 percent) were three types of repetitive MEs, respectively. Gender, work experience, and having a second job affected the total number of MEs. �Long and unconventional nursing shifts,� �changing the dosage of medications for patients under observation due to multiple consultations and different doctors� orders� as well as �failure to give feedback about the causes of errors to nurses by supervisors� were the three prioritized factors for MEs. Originality/value: There is a need to reduce MEs in order to improve patient safety. It seems that in order to reduce MEs, systemic and managerial reforms such as reducing the working hours and workload of nurses, giving feedback about the causes of MEs to nurses, and using initiatives to reduce the stress in nurses are necessary. © 2019, Emerald Publishing Limited