Fig. 1From: Usefulness of a stool to stabilize dental chairs for cardiopulmonary resuscitation (CPR)Setup of the manikin for measuring chest compression depth and movement of the backrest. Placement of the round stool as a stabilizer. The edge of the seating surface of the round stool was set to touch the backrest vertically under the area or chest compressions. a The hand position for the chest compressions was a center of the manikin’s chest (b Red ellipse)Back to article page