This document provides information about cardiopulmonary resuscitation (CPR) from Rukhsana Qasim of the Federal Civil Defence Training School in Karachi. It explains that CPR involves rescue breathing and chest compressions to provide oxygen to the brain and heart during cardiac arrest. Without oxygen for more than 4-6 minutes, brain damage can occur. The document outlines the steps to perform CPR for adults, including opening the airway, checking for breathing, giving breaths, and administering chest compressions. It stresses the importance of immediately calling for emergency help while performing CPR.