ATI LPN
Timby's Introductory Medical-Surgical Nursing Thirteenth, North American Edition
Chapter 19 : Introduction to the Respiratory System Questions
Question 1 of 5
A nurse is caring for a client who has frequent upper respiratory infections. Which structure is most helpful in protecting against infection?
Correct Answer: C
Rationale:
Tonsils and adenoids do not contribute to respiration but protect against infection. Palatine tonsils are composed of lymphoid tissue. Cilia are fine hairs that move particles and liquid, preventing irritation and contamination of the airway. Sinuses are nasal cavity structures. Turbinates warm and add moisture to the inspired air.
Question 2 of 5
The nurse is suctioning a client who is unable to expectorate respiratory secretions. At which point does the nurse expect the client to experience coughing?
Correct Answer: C
Rationale: Upon the catheter stimulating the carina, coughing and even bronchospasm may occur. Productive secretions may be loosened and eliminated via the suction catheter. When the catheter reaches the back of the pharynx near the uvula, the gag reflex is initiated. The suction catheter does not reach the entrance of the lung.
Question 3 of 5
A client arrived in the emergency department with a sharp object penetrating the diaphragm. When planning nursing care, which client need would the nurse identify as a priority?
Correct Answer: C
Rationale: The diaphragm separates the thoracic and abdominal cavities. On inspiration, the diaphragm contracts and moves downward, creating a partial vacuum. Without this vacuum, air is not as efficiently drawn into the thoracic cavity. Hypoxia or hypoxemia may occur from the poor availability of oxygen. Although the nursing diagnosis of acute pain is probable, gas exchange is a higher priority. Ineffective airway clearance is not the greatest concern because the problem is with ventilation. Infection risk is present but is not the highest-priority client need.
Question 4 of 5
The nurse is caring for an adolescent client injured in a snowboarding accident. The client has a head injury, a fractured right rib, and various abrasions and contusions. The client has a blood pressure of 142/88 mm Hg, pulse of 102 beats/minute, and respirations of 26 breaths/minute. Which laboratory test best provides data on a potential impairment in ventilation?
Correct Answer: A
Rationale: Blood gases report the partial pressure of oxygen, which is dissolved in the blood. Normal readings are 80 to 100 mm Hg. By documenting oxygen levels in the blood, the nurse recognizes the current ventilation. The complete blood count provides information regarding number of blood cells, which can relate to the disease processes such as anemia and infection. The blood chemistry provides information on liver/renal function and electrolytes within the system. Serum alkaline phosphate is a laboratory test used to help detect liver disease and bone disorders.
Question 5 of 5
The nurse is analyzing a client's blood pH of 7.1. Which symptom would indicate that the client's body is working to stabilize?
Correct Answer: A
Rationale: Increased CO2 mechanism, which is present in body fluids primarily as carbonic acid, causes the pH to decrease below 7.4. As a homeostatic mechanism to normalize pH, the lungs eliminate carbonic acid by blowing off more CO2. Respirations increase to normalize pH. None of the other symptoms note a reflection of stabilizing blood pH.