If a victim has a pulse but is not breathing, this means they are experiencing respiratory arrest. The immediate first aid response is to perform rescue breathing (also known as artificial ventilation) to supply oxygen to their lungs.First Aid Management: Rescue Breathing for an Unconscious Victim with Pulse but No Breathing1. Ensure the Scene is SafeCheck for any dangers to you or the victim before proceeding.2. Check Responsiveness and BreathingConfirm that the victim is unresponsive and not breathing, but has a pulse (check carotid pulse for adults).3. Call for Emergency HelpCall emergency services (ex. 911) or have someone else call.If you're alone and the victim is a child or infant, give rescue breaths for 2 minutes before calling.4. Open the AirwayUse the head-tilt, chin-lift technique to open the airway (unless spinal injury is suspected, in which case use jaw-thrust).5. Give Rescue BreathsGive 1 breath every 5–6 seconds for an adult (about 10–12 breaths per minute).Each breath should last 1 second, enough to make the chest visibly rise.Avoid over-ventilation to reduce the risk of gastric inflation.6. Continue MonitoringCheck pulse and breathing every 2 minutes.If the pulse is lost, begin CPR immediately (30 compressions, 2 breaths).If the victim starts to breathe spontaneously, place them in the recovery position (if no spinal injury is suspected) and monitor until help arrives.7. Use Barrier Devices If AvailableUse a CPR mask or bag-valve mask if trained and available to protect against infections.[tex][/tex]