Nokea
The nurse is caring for clients on the neurological unit. Which triad of neurological mechanisms does the nurse identify as most responsible when there is abnormality in ventilation control?
- A. Medulla oblongata, cerebellum, and heart rate
- B. Pons, cerebellum, and oxygen receptors
- C. Medulla oblongata, mitral valve, and central receptors
- D. Aortic arch, pons, and CO2 receptor sites
Correct Answer: D
Rationale: Several mechanisms control ventilation. The respiratory center in the medulla oblongata and pons control rate and depth of respirations. The central chemoreceptors in the medulla and peripheral chemoreceptors in the aortic arch also provide a mechanism for detecting abnormalities and signal changes to alter the pH and levels of oxygen in the blood. The other options have an incorrect piece of the triad.
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A nurse is obtaining a health history from a client who reports hemoptysis for the past 2 months. The client reports occasional dyspnea. Which imaging study, ordered by the physician, will view the thoracic cavity while in motion?
- A. Fluoroscopy
- B. Chest x-ray
- C. Magnetic resonance imaging (MRI)
- D. Computed tomography (CT) scan
Correct Answer: A
Rationale: Fluoroscopy enables the physician to view the thoracic cavity with all of its contents in motion. A fluoroscopy more precisely diagnoses the location of a tumor or lesion. An x-ray shows the size, shape, and position of the lungs. An MRI and CT produce axial views of the lungs.
The student nurse is learning breath sounds while listening to a client in the physician's office. An experienced nurse is assisting and notes air movement over the trachea to the upper lungs. The air movement is noted equally on inspiration and expiration. Which breath sounds would the nurse document?
- A. Abnormal vesicular sounds
- B. Normal bronchial sounds
- C. Normal bronchovesicular sounds
- D. Abnormal bronchial sounds
Correct Answer: C
Rationale: Air movement over the trachea and upper lungs is a normal finding for bronchovesicular sounds. The air movement is noted equally on inspiration and expiration. The other choices do not match the description.
The client has just had an invasive procedure to assess the respiratory system. What does the nurse know should be assessed on this client?
- A. Watery sputum
- B. Loss of consciousness
- C. Respiratory distress
- D. Masses in pleural space
Correct Answer: C
Rationale: After invasive procedures, the nurse must carefully check for signs of respiratory distress and blood-streaked sputum. Masses in the pleural space are a condition that affects fremitus. General examination of overall health and condition includes assessing the consciousness of a client.
What is the difference between respiration and ventilation?
- A. Ventilation is the process of gas exchange.
- B. Ventilation is the movement of air in and out of the respiratory tract.
- C. Ventilation is the process of getting oxygen to the cells.
- D. Ventilation is the exchange of gases in the lung.
Correct Answer: B
Rationale: Ventilation is the actual movement of air in and out of the respiratory tract. Respiration is the exchange of oxygen and CO2 between atmospheric air and the blood and between the blood and the cells.
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?
- A. Blood gases
- B. Complete blood count
- C. Blood chemistry
- D. Serum alkaline phosphate
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.