The wound was copiously irrigated with normal saline, and the mucosal flap was replaced to its appropriate position.

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In this sentence, the key phrase is "the wound was copiously irrigated with normal saline." To understand this phrase, let's break it down:

1. Wound: This refers to an injury or cut in the skin or other tissues of the body.
2. Copiously: It means that a large amount or volume of something is being used.
3. Irrigated: In medical terms, irrigation refers to flushing or rinsing a wound or body cavity with a sterile fluid.
4. Normal saline: Normal saline is a solution made of sterile water and salt, which has the same concentration of salt as the human body.

So, when it says "the wound was copiously irrigated with normal saline," it means that a large amount of sterile saltwater solution was used to flush or clean the wound thoroughly.

Moving on to the next part of the sentence, it states "the mucosal flap was replaced to its appropriate position." This part describes the treatment of a mucosal flap, which is a piece of tissue that has been lifted or detached from its original position. The phrase implies that the mucosal flap was repositioned back to its correct place.

Overall, the sentence describes a medical procedure where a wound is thoroughly cleaned using a large amount of sterile saltwater solution, and a mucosal flap is then repositioned to its original position.