1. 42-rationale: each unit of packed rbcs contains 250 ml. each unit is to infuse over 1 hour (60 minutes).\r\nuse the following equation:\r\n250 ml/60 minutes = 4.16 ml.\r\nmultiply by the drip factor:\r\n4.16 ml 10 gtt = 41.6 gtt/minute (42 gtt/minute).\r\n\r\nclient needs category: physiological integrity\r\nclient needs subcategory: pharmacological and parenteral therapies\r\ncognitive level: analysis\r\n\r\nreference: karch, a.m. focus on nursing pharmacology, 4th ed. philadelphia: lippincott williams & wilkins, 2007, p. 57.