Philips SMART pads, when placed on the victim’s bare skin, sense and adapt the defibrillator’s instructions to guide your actions every step of the way. SMART pads guide the defibrillator to adapt instructions to the pace of the responder so as not to overwhelm, run ahead or slow them down. In addition to being repeated, prompts are rephrased and include additional instructions to help understanding. SMART Analysis automatically assesses the victim’s heart rhythm and is designed to deliver therapy only if the rhythm is determined to be shockable – even if the Shock button is pressed. With patented Quick Shock, the Heartstart AED is among the fastest in class at delivering shock treatment after CPR.