What are the 3 levels of prevention in nursing

What are the 3 levels of prevention in nursing and describe the differences and give some examples of each…..

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Heparin-induced thrombocytopenia (HIT) is a life-threatening complication of heparin administration.

1. Describe the occurrence of HIT in clients and how it is detected.
2. What are the risk factors for this disorder?
3. What are the potential interventions to control the outcome of HIT?