Clinical outcomes for the obese hospital inpatient: An observational study.

OBJECTIVES: The prevalence of obesity presents a burden for Australian health care. The aim of this study was to determine whether severely obese hospital inpatients have worse outcomes. METHODS: This is an observational cohort study, using data from all adult patients admitted to hospital for all elective and emergency admissions of patients aged over 18 years to two large Australian urban hospitals. We measured their length of stay, intensive care unit admission rate, intensive care unit length of stay, mortality and readmission rates within 28 days of discharge and compared these outcomes in the severely obese and non-severely obese subjects using t-test or chi-square test as appropriate. RESULTS: Between February 2008 and February 2012, 120,872 were admitted to hospital 193,800 times; 2701 patients were identified as severely obese (2.23%) and 118,171 patients were non-severely obese. If admitted as an emergency, severely obese patients have worse outcomes and consume more resources than other patients. These outcomes are still worse, but less so, if the obese patient is admitted as an elective patient suggesting that anticipation of any obesity-specific problems can have a beneficial effect. CONCLUSION: Upon admission or discharge of severely obese hospital inpatients, health care plans should be even more carefully laid than usual to reduce the risk of readmission.

Retinal axon target selection in Drosophila is regulated by a receptor protein tyrosine phosphatase.

Different Drosophila photoreceptors (R cells) connect to neurons in different optic lobe layers. R1-R6 axons project to the lamina; R7 and R8 axons project to separate layers of the medulla. We show a receptor tyrosine phosphatase, PTP69D, is required for lamina target specificity. In Ptp69D mutants, R1-R6 project through the lamina, terminating in the medulla. Genetic mosaics, transgene rescue, and immunolocalization indicate PTP69D functions in R1-R6 growth cones. PTP69D overexpression in R7 and R8 does not respecify their connections, suggesting PTP69D acts in combination with other factors to determine target specificity. Structure-function analysis indicates the extracellular fibronectin type III domains and intracellular phosphatase activity are required for targeting. We propose PTP69D promotes R1-R6 targeting in response to extracellular signals by dephosphorylating substrate(s) in R1-R6 growth cones.

Effects of back care lessons on sitting and lifting by primary students.

This study investigated some of the effects of back care education. Four classes of students aged from 10 to 12 years were given three lessons structured to teach acceptable sitting posture, safe lifting techniques and sports injury prevention procedures. Data on the students' sitting postures and lifting skills were collected over a period of six weeks. The results of the study indicate that lessons on aspects of back care can have an immediate impact on students' sitting and lifting behaviours. Further research along the present lines is indicated to determine whether continued instruction and feedback over a longer interval would produce more durable changes.