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calcium-free and calcium-containing solutions (calcium paradox). Cardiovasc Res 1967; 1:201-9 Kohn RM. Myocardial oxygen uptake during ventricular fibrillation and electromechanical dislocation. Am J Cardiol 1963; 11:483-6 Caulfield JB, Zir L, Harthorne JW. Blood calcium levels in the presence of arteriographic contrast material. Circulation 1975; 52:119-23 Dembo DH. Calcium in advanced life support. Crit Care Med 1981; 9:358-9 Hearse OJ, Humphrey SM, Bullock GR. The oxygen paradox

and the calcium paradox: two facets of the same problem? ] Mol Cell Cardiol1978; 10:641-68 29 Frank JS, Rich TL, Beydler S, Reman M. Calcium depletion in rabbit myocardium. Circ Res 1982; 51:117-30 30 Yakaitis RW, Otto CW, Blitt CD. Relative importance of alpha and beta adrenergic receptors during resuscitation. Crit Care Med 1979; 7:293-6 31 Holmes HR. Babbs CF, Voorhees WD, Thcker WA, DeGaravilla B. Inftuence of adrenergic drugs upon vital organ perfusion during CPR. Crit Care Med 1980; 8:137-40

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and

This course will be held at the Radisson Plaza, St. Paul, Minnesota, March 28-30. Sponsors are: St. Paul-Ramsey Center, American Lung Association of Minnesota, Ramsey County Lung Association, Midwest Center for Occupational Health and Safety, University of Minnesota Medical School. For information, contact: Ruth Mcintyre, Associate Director, Continuing Medical Education, St. Paul-Ramsey Medical Center, St. Paul 55101 (612:221-3980).

Mid-winter Chest Conference The 24th Annual John R. Durrance Mid-winter Chest Conference, sponsored by the Colorado Trudeau Society, will be held in Aspen, March 13-16. For information, contact Ms. Shirley Lindquist, American Lung Association of Colorado, PO Box 921, Loveland, Colorado 80539 (303:667-5198).

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Out-of-Hospital Ventricular Rbrlllallon (Yttlmer. Hoffman, Baraff)