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Accurate pulse oximetry requires good circulation and unobstructed light transmission. Nail polish and artificial nails interfere with readings. Warming cold fingers improves blood flow, ensuring accuracy.

Incoming mail should be date-stamped, logged, and distributed appropriately. Personal mail should not be opened. Proper handling ensures recordkeeping and compliance.

Therapeutic communication involves acknowledging anxiety, explaining the timeline, and alerting the provider. Giving results prematurely violates policy. Minimizing or ignoring patient fears increases distress.

Therapeutic communication includes empathy, silence, and supportive gestures. Allowing patients to express emotions validates their feelings. Telling them to "be strong" minimizes their experience, while avoidance or leaving the room breaks rapport.

Fasting blood tests require 8–12 hours of no food or drink except water. Patients may take prescribed medications unless directed otherwise by the provider. Juice, food, or coffee can alter results.