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The nurse is reviewing the results of a sweat test performed on a child diagnosed with cystic fibrosis (CF). Which finding should the nurse identify as supporting this diagnosis?
- A. An evening sweat potassium concentration greater than 60 mEq/L
- B. A sweat chloride concentration that is consistently greater 60 mEq/L
- C. An early morning sweat chloride concentration of less than 40 mEq/L
- D. A sweat potassium concentration that is consistently less than 40 mEq/L
Correct Answer: B
Rationale: Cystic fibrosis is a chronic multisystem disorder characterized by exocrine gland dysfunction. A consistent finding of abnormally high chloride concentrations in the sweat is a unique characteristic of CF. Normally the sweat chloride concentration is less than 40 mEq/L. A sweat chloride concentration greater than 60 mEq/L is diagnostic of CF. Potassium concentration is unrelated to the sweat test.
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A postterm infant, delivered vaginally, is exhibiting tachypnea, grunting, retractions, and nasal flaring. The nurse interprets that these assessment findings are indicative of which condition?
- A. Hypoglycemia
- B. Respiratory distress syndrome
- C. Meconium aspiration syndrome
- D. Transient tachypnea of the newborn
Correct Answer: C
Rationale: Tachypnea, grunting, retractions, and nasal flaring are symptoms of respiratory distress related to meconium aspiration syndrome (MAS). MAS occurs often in postterm infants and develops when meconium in the amniotic fluid enters the lungs during fetal life or at birth. The symptoms noted in the question are unrelated to hypoglycemia. Respiratory distress syndrome is a complication of preterm infants. Transient tachypnea of the newborn is primarily found in infants delivered via cesarean section.
The nurse is caring for a client in active labor. Which intervention should the nurse implement to prevent fetal heart rate decelerations?
- A. Discourage the client from walking.
- B. Increase the rate of the oxytocin infusion.
- C. Monitor the fetal heart rate every 30 minutes.
- D. Encourage upright or side-lying maternal positions.
Correct Answer: D
Rationale: Side-lying and upright positions such as walking, standing, and squatting can improve venous return and encourage effective uterine activity. There are many nursing actions to prevent fetal heart rate decelerations without necessitating surgical intervention.
A client began receiving an intravenous (IV) infusion of packed red blood cells 30 minutes ago. What is the initial nursing action when the client reports itching and a tight sensation in the chest?
- A. Stop the transfusion.
- B. Check the client's temperature.
- C. Call the primary health care provider.
- D. Recheck the unit of blood for compatibility.
Correct Answer: A
Rationale: The symptoms reported by the client indicate that the client is experiencing a transfusion reaction. The first action of the nurse when a transfusion reaction is observed is to discontinue the transfusion. The IV of normal saline with new IV tubing is started and the primary health care provider is notified. The nurse then checks the client's vital signs: temperature, pulse, and respirations and then rechecks the unit of blood as appropriate for infusion into the client.
While providing care to a client with a head injury, the nurse notes that a client exhibits this posture (refer to figure). What should the nurse document that the client is exhibiting?
- A. Flaccidity
- B. Decorticate posturing
- C. Decerebrate posturing
- D. Rigidity in the upper extremities
Correct Answer: B
Rationale: Decortication is abnormal posturing seen in the client with lesions that interrupt the corticospinal pathways. In this posturing, the client's arms, wrists, and fingers are flexed with internal rotation and plantar flexion of the feet and legs extended. Flaccidity indicates weak, soft, and flabby muscles that lack normal muscle tone. Decerebration is abnormal posturing and rigidity characterized by extension of the arms and legs, pronation of the arms, plantar flexion, and opisthotonos. Decerebration is usually associated with dysfunction in the brainstem area. Rigidity indicates hardness, stiffness, or inflexibility. Decerebrate posturing is associated with rigidity.
A client's telemetry monitor displays ventricular tachycardia. Upon reaching the client's bedside, which action should the nurse take first?
- A. Call a code.
- B. Prepare for cardioversion.
- C. Prepare to defibrillate the client.
- D. Check the client's level of consciousness.
Correct Answer: D
Rationale: Determining unresponsiveness is the first assessment action to take. When a client is in ventricular tachycardia, there is a significant decrease in cardiac output. However, assessing for unresponsiveness helps determine whether the client is affected by the decreased cardiac output. If the client is unconscious, then cardiopulmonary resuscitation is initiated.