Explanation/Reference:
Explanation:
(A) Inotropic therapy will increase contractility, which will increase myocardial O2 demand. (B) Decreased heart rate to the point of bradycardia will increase coronary artery filling time. This should be used cautiously because tachycardia may be a compensatory mechanism to increase cardiac output. (C) The goal in the care of the MI client with angina is to maintain a balance between myocardial O2 supply and demand. (D) Decrease in systemic vascular resistance by drug therapy, such as IV nitroglycerin or nitroprusside, or intra-aortic balloon pump therapy, would decrease myocardial work and O2 demand.

Explanation
(A) Oral iron supplements are contraindicated in thalassemia. (B) Although heart failure may be an end result of this disease, this action is unnecessary. (C) Iron overload is a potential complication of frequent blood transfusions of children with thalassemia. (D) Children should be encouraged to pursue activities related to their exercise tolerance.

Section: Questions Set C
Explanation:
(A) Raising the client's head and placing her feet in a dependent position is an independent nursing action that can be taken to decrease venous return and to reduce pulmonary congestion. (B) Notifying the physician is an appropriate action that should be taken after the client is positioned to maximize her respiratory status. (C) Placing the client on O2may be done with a physician's order or according to an institution's standing orders; however, other actions should be taken first. (D) Furosemide 20 mg IV push is an appropriate medication for the client, but it must be ordered by her physician.

Explanation/Reference:
Explanation:
(A, C, D) These foods are allowed with a colostomy. (B) Gasforming foods such as cabbage should be avoided.

(A) Monthly blood transfusions are not indicated postgastrectomy. (B) Increasing iron in the client's diet may cause irritation and will not alleviate pernicious anemia. (C) It may be necessary that the client eat small meals several times per day, but this measure has no relevance to prevention of pernicious anemia. (D) Pernicious anemia is caused by lack of Vitamin B12, and replacement therapy will be necessary because the client's stomach has been removed.