P. Novak, Consultant In his paper the author has made a very useful contribution to the subject of prediction of oxygen content downstream of spillways, particularly in the case of surface aeration. However, some of the analysis referring to previously published results of oxygen uptake at hydraulic structures is not always rigorous enough. 40. The equations quoted for Avery and Novak apply to ...

A Singaporean naval diver suffered symptoms and signs of cerebral arterial gas embolism (CAGE) following a panicked ascent from a depth of 5-6 metres' sea water while using a Dräger LAR V closed-circuit oxygen rebreather system. He presented with altered mental status and paresis. CAGE due to gas mixtures with high oxygen content has seldom been reported. The diver had no sequelae following pro...

oxygen delivery per unit of TTI was significantly lowered and Endo ECGs showed ischemia (ST elevation) when Endo/Epi flow ratios (microsphere method) fell below 1.0 (P < 0.001). Ischemia occurred without anemia (Hgb > 10 g %) in severe aortic stenosis; with mild anemia (Hgb 5-10 g %) and mild aortic stenosis; and with severe anemia (Hgb < 5 g %) without aortic stenosis. Ischemic Endo ECGs occur...