Explanation/Reference:
Explanation:
(A) Reticulocyte count measures the number of immature erythrocytes. CPK is an enzyme released from injured myocardial tissue. (B) Aspartate transaminase is an enzyme released from injured myocardial tissue. Alanine transaminase is an enzyme released for general tissue destruction, which is specific for liver injury. (C) Sedimentation rate is a nonspecific test for inflammation. (D) Lactic dehydrogenase and CPK are enzymes released from injured myocardial tissue.

Explanation
(A) Maintaining the hydration level is the focus for nursing intervention because dehydration enhances the sickling process. Both oral and parenteral fluids are used. (B) The pain is a result of the sickling process.
Analgesics or narcotics will be used for symptom relief, but the underlying cause of the pain will be resolved with hydration. (C) Serious bacterial infections may result owing to splenic dysfunction. This is true at all times, not just during the acute period of a crisis. (D) O2 therapy is used for symptomatic relief of the hypoxia resulting from the sickling process. Hydration is the primary intervention to alleviate the dehydration that enhances the sickling process.

Explanation/Reference:
Explanation:
(A) Pain in the legs could be indicative of doing too much too quickly, but not of worsening heart failure.
The client should be cautioned to increase his activities slowly. (B) Thirst, weight loss, and frequent urination are not indicative of heart failure. The client should report these symptoms to his physician. (C) Drowsiness and lethargy are not indicative of worsening heart failure. The client should report these symptoms to his physician. (D) All of these symptoms indicate a worsening cardiac condition possibly associated with too much activity. The client's activity level should be evaluated.

Explanation
(A) The adolescent knows what he likes and will be more likely to eat if he has some control over his diet. (B) The nurses and nutritionist can plan an excellent diet, but it will not help the adolescent unless he eats it. (C) Eating is already a chore for this client. Adding a strict calorie count could make it even more burdensome.
(D) Fats are particularly difficult for the cystic fibrosis client to digest. He does need a healthful diet, not just more calories.

Explanation/Reference:
Explanation:
(A) Altered surfactant production is found in sudden infant death syndrome. (B) Paradoxical breathing occurs when a negative intrathoracic pressure is transmitted to the abdomen by a weakened, poorly functioning diaphragm. (C) Asthma is characterized by spasm and constriction of the airways resulting in increased resistance to airflow. (D) If the pulmonary tree is obstructed for any reason, inspired air has difficulty overcoming the resistance and getting out. The rate of respiration increases in order to compensate, thus increasing air exchange.