812 (95 %CI 0.786-0.838). The sensitivity,
specificity and correct classification rates for COPD diagnosis were respectively 60.6%, 85.2% and 82.7% at a cut-off score of 16.
CONCLUSIONS: The COPD-SQ can be used in first-level screening for COPD.”
“This paper reports simulation results on microwave-assisted magnetization reversal in magnetic thin films with perpendicular anisotropy. In comparison with frequency-fixed microwaves, frequency-chirped microwaves have higher efficiency in pumping magnetization precession and, therefore, can lead to more significant reduction in switching fields. Through the use of chirped microwaves, switching with low fields is also possible for large damping films. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3121075]“
“Background: The optimal method of prophylaxis for the prevention Of pulmonary embolism in patients undergoing total hip arthroplasty remains controversial. Guidelines appear to
be contradictory. selleck kinase inhibitor The purpose of the present study was to examine whether a best prophylactic agent exists for the prevention of postoperative pulmonary embolism and whether the type of anesthesia affects the rates of pulmonary embolism.
Methods: From 2001 to 2008, a total joint registry from a nationwide health maintenance organization was evaluated to determine the rates. of pulmonary embolism, fatal pulmonary embolism, and death among 17,595 patients without a history of venous thromboembolism who were MM-102 cell line managed with unilateral
total hip arthroplasty. All patients were followed for ninety days postoperatively.. Data were abstracted STA-9090 datasheet electronically and were validated through chart reviews. Multivariate logistic regression models were used to assess associations between the types of prophylaxis and anesthesia that were used and pulmonary embolism while adjusting for other risk factors.
Results: Patients received either mechanical prophylaxis alone (N = 1533) or chemical prophylaxis (aspirin [N = 934], Coumadin [warfarin] [N = 6063], or low-molecular-weight heparin [N = 7202]) with or without mechanical prophylaxis. The rate of pulmonary embolism was 0.41% (95% confidence interval [CI], 0.32% to 0.51%) overall, 0.37% (95% CI, 0.05% to 0.70%) for mechanical prophylaxis, 0.43% (95% CI, 0.01% to 0.85%) for aspirin, 0.43% (95% CI, 0.26% to 0.59%) for Coumadin, 0.40% (95% CI, 0.26% to 0.55%) for low-molecular-weight heparin, 0.43% (95% CI, 0.28% to 0.58%) for general anesthesia, and 0.40% (95% CI, 0.28% to 0.52%) for non-general anesthesia. The mortality rate was 0.51% (95% CI, 0.40% to 1.01%) overall, 0.67% (95% CI, 0.23% to 1.34%) for mechanical prophylaxis, 0.64% (95% CI, 0.13% to 1.28%) for aspirin, 0.51% (95% CI, 0.33% to 1.02%) for Coumadin, 0.42% (95% CI, 0.27% to 0.83%) for low-molecular-weight heparin, 0.51% (95% CI, 0.35% to 0.67%) for general anesthesia, and 0.50% (95% CI, 0.36% to 0.64%) for non-general anesthesia.