参考答案：C

解析：Soft restraints from the upper arm to the wrist prevent the infant from touching his lip but allow him to hold a favorite item such as a blanket. Because they could damage the operative site, such objects as pacifiers, suction catheters, and small spoons shouldn’t be placed in a baby’s mouth after cleft palate repair. A baby in a prone position may rub her face on the sheets and traumatize the operative site. The suture line should be cleaned gently to prevent infection, which could interfere with healing and damage the cosmetic appearance of the repair. Dried blood collecting on the suture line can widen the scar.