Final answer:
Negligent torts is the legal principle related to the failure to document a patient's preference for not using blood products during a procedure.
Explanation:
Negligent torts would be the legal principle that applies in this situation. Failure to document a patient's preference for not using blood products during a procedure can lead to harm or complications for the patient due to the lack of informed decision-making. This neglect breaches the duty of care owed to the patient, falling under negligent torts.
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