患者,男性,20岁,血小板减少性紫癜。护士查体发现其唇和口腔有散在瘀点,轻触牙龈出血。该护士为患者行口腔护理时应特别注意( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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