منابع مشابه
Rigid fibrescope Bonfils: use in simulated difficult airway by novices
BACKGROUND The Bonfils intubation fibrescope is a promising alternative device for securing the airway. We examined the success rate of intubation and the ease of use in standardized simulated difficult airway scenarios by physicians. We compared the Bonfils to a classical laryngoscope with Macintosh blade. METHODS 30 physicians untrained in the use of rigid fibrescopes but experienced in air...
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a wide variation in the observed (A–a)DO2. However, these factors were not significantly different between the two groups and our primary outcome measure was the change in (A–a)DO2 between 1 h before extubation and 1 h after, so each patient acted as their own control such that only events occurring between the two measurements of (A–a)DO2 will have affected our results. All patients received a...
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We consider three problems about the illumination of planar regions with oodlights of prescribed angles. Problem 1 is the decision problem: given a wedge W of angle , n points p 1 ; ; p n in the plane and n angles 1 ; ; n summing up to , decide whether W can be illuminated by oodlights of angles 1 ; ; n placed in some order at the points p 1 ; ; p n and then rotated appropriately. We show that ...
متن کاملIllumination by Taylor Polynomials
Let f(x) be a differentiable function on the real line R, and let P be a point not on the graph of f(x). Define the illumination index of P to be the number of distinct tangents to the graph of f which pass through P . We prove that if f ′′ is continuous and nonnegative on R, f ′′ ≥ m > 0 outside a closed interval of R, and f ′′ has finitely many zeros onR, then any point P below the graph of f...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 1983
ISSN: 0003-2409
DOI: 10.1111/j.1365-2044.1983.tb12493.x