Explanation/Reference:
Explanation:
(A, D) Dantrolene sodium is a peripheral skeletal muscle relaxant and would have no effect on a postoperative infection. (B) Dantrolene sodium is indicated prophylactically for clients with malignant hyperthermia or with a family history of the disorder. The mortality rate for malignant hyperthermia is high.
(C) Neuroleptic malignant syndrome is an exercise-induced muscle pain and spasm and is unrelated to malignant hyperthermia.

(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.

Explanation/Reference:
Explanation:
(A) Approaching a client's aggressive behavior on a continuum of least restrictive care is in agreement with his or her rights (i.e., verbal methods to help maintain control, medication, seclusion, and restraints, as necessary). (B) Approaching a client in a challenging manner is threatening and inappropriate. A nonchallenging and calm approach reflects staff in control and may increase client's internal control. (C) It is inappropriate to leave an aggressive client who is acting out alone. The nurse should acquire qualified help to prevent client from harm or injury to self or others. (D) Moving a client to seclusion immediately for shouting is inappropriate. The nurse should offer the client an opportunity to control self with limit setting.
The client should understand that the staff will assist with control if necessary (i.e., quietly accompany out of environment to decrease stimulation and allow for verbalization) employing the least restrictive care model of intervention.

Explanation/Reference:
Explanation:
(A) Dissociation is separating a group of mental processes from consciousness or identity, such as multiple personalities. That is not evident in this situation. (B) Intellectualization is excessive use of reasoning, logic, or words usually without experiencing associated feelings. This is the defense mechanism that this client is using. (C) Rationalization is giving a socially acceptable reason for behavior rather than the actual reason. She is discussing events, not reasons. (D) Displacement is a shift of emotion associated with an anxiety-producing person, object, or situation to a less threatening object.