St. John Ambulance First Aid Practice Exam

Cooling a burn under running water for at least 10 minutes is important for several reasons. First, it helps to minimize the damage to the skin and underlying tissues by reducing the temperature of the burn and stopping the burning process. This duration is generally recognized as effective in preventing further injury and can significantly alleviate pain.

Using cool running water allows for better heat dissipation compared to other methods, such as applying ice or using cold packs, which can cause further tissue damage and increase pain.

The recommendation of 10 minutes strikes a balance; it is typically sufficient to provide relief and begins to ease the inflammatory response associated with burns. This helps in preventing complications, such as deeper tissue injury and prolonged healing times. While longer cooling times might also be beneficial, the 10-minute guideline is widely accepted and practical in emergency situations.