The healthcare provider prescribes and IV solution of regular insulin (Humulin-R) 100 units in 250 ml of 0.45% saline to infuse at 12 units/hour. The nurse should program the infusion pump to deliver how many ml/hour?

Choice A: 18%. This is not the correct percentage, as it only accounts for one lower extremity. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so both lower extremities would account for 18% x 2 = 36%.

Choice B: 27%. This is not the correct percentage, as it only accounts for one and a half lower extremities. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so one and a half lower extremities would account for 9% x 3 = 27%.

Choice C: 36%. This is the correct percentage, as it accounts for both lower extremities. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so both lower extremities would account for 9% x 4 = 36%.

Choice D: 45%. This is not the correct percentage, as it accounts for more than both lower extremities. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so more than both lower extremities would account for more than 9% x 4 = 36%.

Choice B reason: Emotional conflict due to stress is not a specific problem for a client who had an MI 24 hours ago and wants to go home despite his condition. Emotional conflict is a state of having mixed or contradictory feelings about something or someone, such as family, work, or self. Stress is a response to any physical, psychological, or environmental demand that exceeds one's coping resources. The nurse should assess the client's sources of stress and conflict and help him manage them.

Choice C reason: Deficient knowledge of MI lifestyle changes is not a primary problem for a client who had an MI 24 hours ago and wants to go home despite his condition. Deficient knowledge is a state of lacking information or understanding about something, such as disease process, treatment options, or self-care measures. Lifestyle changes are modifications in one's habits or behaviors that promote health and well-being, such as diet, exercise, smoking cessation, or stress management. The nurse should assess the client's learning needs and readiness and provide appropriate education.

Choice D reason: Anxiety related to treatment plan is not an evident problem for a client who had an MI 24 hours ago and wants to go home despite his condition. Anxiety is a feeling of apprehension, worry, or fear that interferes with one's normal functioning or well-being. Treatment plan is a set of goals, interventions, and outcomes that guide the care of a client with a specific health problem, such as MI. The nurse should assess the client's level of anxiety and provide information and reassurance about his treatment plan.