<prompt> In a child with cardiopulmonary arrest, intraosseous access should be attempted, if venous access is not available within:1 minute2 minutes3 minutes5 minutes  <response>: a. 1 minuteRef: Nelsons 20e p 523-528, Ghai 8e p 715-718If venous access is not available within 1 minute in a child with cardiopulmonary arrest, an IO needle should be placed in anterior proximal tibia 