November 17, 2015 9:45 am Surviving a Medical Emergency Time is of the essence when it comes to a medical emergency. Leslie Gaydos explores how to treat an allergic reaction, a knocked out tooth and what to do when someone is having a heart attack. US & World Videos 3:01 Andover artistic swimmer has Olympic dreams 1:59 Scientists give shark season outlook 2:47 Memorial Day weekend travel ramps up in Boston 1:57 Nahant Beach shooting renews concerns about beach safety 0:39 This piglet yoga class is sowing joy in Mass.
