Question 1

Which of the following renal tissues is the most highly dependent on oxygen?

Accepted Answer

The renal cortex is the most highly dependent on oxygen because it has a high metabolic activity due to the presence of numerous glomeruli and proximal tubules that require significant energy for filtration and reabsorption processes.

Question 2

The nurse determines that a client has met the goals for short-term oxygen therapy after noting which of the following laboratory measurements?

Accepted Answer

The goal of short-term oxygen therapy is to maintain an arterial oxygen level greater than 90 mm Hg or an oxygen saturation level greater than 90%. Therefore, option B is the correct answer as an arterial oxygen level of 94 mm Hg indicates that the client's arterial oxygen level is within the target range. Options A, C and D are not indicative of whether the client has met the goals for short-term oxygen therapy.

Question 3

A client has undergone diagnostic testing of the stomach by using histamine.When the result indicates hypersecretion of gastric acid,the nurse should suspect which of the following conditions?

Accepted Answer

Zollinger-Ellison syndrome is a rare condition in which a tumor in the pancreas or duodenum produces excessive amounts of gastrin, leading to hypersecretion of gastric acid. Histamine testing is one way to diagnose this condition. Pernicious anemia, atrophic gastritis, and gastric polyps are not directly related to hypersecretion of gastric acid.

Question 4

The nurse concludes that the family of a client who will have oxygen therapy in the home understand safety measures after they make which of the following statements?

Accepted Answer

Vaseline is petroleum-based and can be flammable, so it should not be used with oxygen therapy.

Question 5

For which of the following organs is a constant supply of oxygen most vital?

Accepted Answer

The brain is a highly oxygen-dependent organ and requires a constant supply of oxygen to function properly. Even a brief interruption of oxygen supply can lead to irreversible brain damage. The kidneys, liver, and lungs also require oxygen to function, but not to the extent that the brain does.

Question 6

When the unlicensed caregiver assigned to a client with newly diagnosed chronic obstructive pulmonary disease reports that the client has confusion,lethargy,and visual problems,the nurse should

Accepted Answer

Administering high levels of oxygen to a client with chronic obstructive pulmonary disease can lead to worsening of their condition due to retaining carbon dioxide. The best course of action in this scenario is to administer low levels of oxygen as ordered and monitor the client's condition closely.

Question 7

Which of the following symptoms would alert the nurse that the client is accumulating carbon dioxide?

Accepted Answer

Paresthesias, or tingling sensations, can be a symptom of hypercapnia, which is the accumulation of carbon dioxide in the bloodstream.

Question 8

Which of the following statements about the Ventimask is accurate?

Accepted Answer

The Ventimask is designed for clients who require a controlled oxygen concentration, especially those with chronic conditions like COPD, where precise oxygen therapy is crucial to avoid carbon dioxide retention.

Question 9

A client with a routine need for oxygen would most likely benefit from oxygen therapy by using which of the following methods of administration?

Accepted Answer

A client with routine need for oxygen would benefit from using a simple face mask, which is a low flow oxygen delivery system that is suitable for clients with chronic respiratory insufficiency who need a low or medium flow of oxygen. Nonrebreathing face masks, partial rebreathing masks, and ventimasks are all high flow oxygen delivery systems that are typically used for acute respiratory distress or when higher concentrations of oxygen are needed.

Question 10

A client will be starting on oxygen therapy by nasal cannula.The nurse anticipates that the oxygen order will be somewhere in the standard range of

Accepted Answer

According to standard oxygen therapy protocols, the oxygen order for a client receiving oxygen via nasal cannula usually ranges between 1 to 6 liters per minute (L/min). Options B, C and D have a more specific range and may not apply to all clients.

Question 11

A client in the early postoperative period would most likely benefit from oxygen therapy by which of the following methods of administration?

Accepted Answer

A simple face mask is often used in the early postoperative period as it provides a moderate concentration of oxygen and is comfortable for the patient, making it suitable for those who may not require high-flow oxygen.

Question 12

A client with smoke inhalation would most likely benefit from oxygen therapy by using which of the following methods of administration?

Accepted Answer

Nonrebreathing masks are used in cases of smoke inhalation because they provide the highest concentration of oxygen (up to 90%) and do not allow for exhaled air to be rebreathed. This helps to prevent the inhalation of harmful carbon monoxide and other toxins that may be present in smoke. Simple face masks and partial rebreathing masks do not provide as high of a concentration of oxygen as the nonrebreathing mask, and the ventimask is typically used for more precise oxygen delivery in specific medical conditions.

Question 13

A client who will undergo gastric testing with histamine is currently taking ranitidine (Zantac).The nurse complies with standard preprocedure teaching by instructing the client to do which of the following?

Accepted Answer

Ranitidine is an H2 blocker that inhibits gastric acid secretion. It is important to avoid taking ranitidine for 24 hours before the test in order to ensure that the gastric acid secretion is not inhibited and the test results are accurate.

Question 14

A client who is taking brompheniramine (Dimetane)indicates an understanding of drug therapy by stating which of the following anticholinergic effects of this drug?

Accepted Answer

Brompheniramine is an antihistamine with anticholinergic properties that can cause dry mouth as a side effect. It does not typically cause more frequent urination, excessive watering of eyes, or blue-green vision.

Question 15

A client with alveolar hypoventilation and carbon dioxide retention would most likely benefit from oxygen therapy by using which of the following methods of administration?

Accepted Answer

A client with alveolar hypoventilation and carbon dioxide retention would benefit from oxygen therapy using a Ventimask because it provides a more precise oxygen concentration with the ability to adjust the concentration of delivered oxygen while still allowing the client to rebreathe some exhaled air. This rebreathing increases the client's respiratory drive and can help reduce the retention of carbon dioxide. The other masks mentioned - simple face mask, partial rebreathing mask, and nonrebreathing mask - do not offer the ability to adjust oxygen concentration and do not allow the client to rebreathe some exhaled air, making them less effective in treating alveolar hypoventilation and carbon dioxide retention.

Question 16

The nurse is most concerned about sedation as an adverse drug effect in the client taking which of the following antihistamines?

Accepted Answer

Diphenhydramine (Benadryl) is well known for its sedative effect and can cause drowsiness, fatigue, and impaired coordination. Desloratadine (Clarinex), Fexofenadine (Allegra), and Loratadine (Claritin) are considered non-sedating antihistamines and have lower central nervous system penetration, therefore, the risk of sedation is minimal.

Question 17

The nurse would question an order for fluticasone (Flonase)in a client who has which of the following conditions?

Accepted Answer

Fluticasone can worsen or reactivate ocular herpes simplex, so it should not be used in clients with this condition.

Question 18

The nurse would be especially vigilant to assess for which of the following adverse drug effects in an older adult male client taking diphenhydramine (Benadryl)?

Accepted Answer

Diphenhydramine (Benadryl) is an antihistamine medication that can cause urinary retention, especially in older adults who may have preexisting urinary issues. Excessive tear formation (A), anorexia (C), and constipation (D) are not commonly associated with diphenhydramine.

Question 19

Which oxygen delivery device can supply oxygen concentrations of up to 90%?

Accepted Answer

Oxygen masks can supply oxygen concentrations of up to 90%, while nasal catheters and nasal cannulas usually provide lower concentrations (around 24-44%) and simple face masks can supply up to 60-70%.

Question 20

The nurse caring for a premature infant who is receiving oxygen in an incubator notes that the maximum oxygen percentage given to the infant should not exceed what percentage to avoid risk of retrolental fibroplasias?

Accepted Answer

The maximum oxygen percentage given to a premature infant should not exceed 40% to avoid the risk of retrolental fibroplasias, a condition that can lead to blindness. Oxygen levels must be carefully monitored in premature infants to balance the need for oxygen with the risk of causing damage.

Quiz 38: Oxygen and Miscellaneous Respiratory Agents