The document discusses three medical topics: 1. Electrocardiograms (EKGs) measure the electrical activity of heartbeats through electrodes placed on the chest, arms and legs connected to an EKG machine. It provides information on heart rhythm, previous heart attacks and heart muscle thickness. 2. Antacids are medications used to treat excess stomach acid, containing ingredients like sodium, magnesium, aluminum and calcium to balance stomach pH levels. 3. Fractures occur when force exceeds a bone's strength, causing pain through nerve endings around bones. Types of fractures include dislocations and impacted or torus fractures. Symptoms are swelling, bruising and pain. Treatments include nails in long bones or