Question 1

Arterial blood gases were drawn when a patient was discovered in cardiopulmonary arrest.Which results would the nurse evaluate as indicating global lactic acidosis? Note: Credit will be given only if all correct choices and no incorrect choices are selected.
Select all that apply.

Accepted Answer

Global lactic acidosis is characterized by a low pH indicating acidemia and a negative base excess indicating a high amount of acid in the blood.

Question 2

A patient's mixed venous oxygen saturation level is 56%.What evaluation would the nurse make of this reading?

Accepted Answer

A mixed venous oxygen saturation level of 56% indicates that the cells are not receiving enough oxygen. A normal range of mixed venous oxygen saturation is typically between 60-80%. This level can be an indication of low cardiac output or decreased oxygen availability, such as in cases of respiratory failure or shock.

Question 3

A patient is diagnosed with lactic acidosis.The nurse plans to provide care to a patient whose energy is being produced through which process?

Accepted Answer

Lactic acidosis is a condition in which there is an overproduction of lactic acid due to anaerobic metabolism (the breakdown of glucose in the absence of oxygen). Therefore, the nurse should provide care that supports aerobic metabolism (using oxygen to produce energy) and helps to correct the underlying cause of the lactic acidosis.

Question 4

The nurse is planning essential activities for a critically ill patient.In order to provide the least impact on oxygen consumption,the nurse would be certain the patient rests before and after which activity?

Accepted Answer

The answer of The nurse is planning essential activities for...

Question 5

A patient is diagnosed with iron deficiency anemia.The nurse plans interventions for a patient with which most likely complication?

Accepted Answer

Iron deficiency anemia can lead to a decreased ability to carry oxygen, resulting in impaired oxygen delivery to the tissues. This can cause symptoms such as fatigue, shortness of breath, and pale skin. Therefore, the nurse should plan interventions to address this potential complication.

Question 6

A patient's PaO₂ level is 56 mm Hg.The nurse would plan care to prevent development of which condition?

Accepted Answer

The answer of A patient's PaO₂ level is 56 mm...

Question 7

The nurse,caring for a patient with hypovolemic shock,is primarily concerned that which change could occur in this patient's pulmonary gas exchange?

Accepted Answer

Hypovolemic shock is characterized by decreased blood volume resulting in decreased oxygen delivery to the tissues, leading to insufficient distribution of oxygen throughout the body. This can lead to impaired pulmonary gas exchange, among other complications. Therefore, the nurse should be primarily concerned with the potential for insufficient distribution of oxygen to the tissues.

Question 8

The nurse is caring for a patient with impaired diffusion of oxygen secondary to pneumonia.Assessment findings related to this impairment are similar to those the nurse would see in patients with which other disease states?

Accepted Answer

Atelectasis, or collapse of lung tissue, can also impair diffusion of oxygen and result in similar assessment findings to pneumonia. Spinal cord injuries and flail chest may result in impaired ventilation rather than diffusion, while carbon monoxide poisoning affects the ability of hemoglobin to bind with oxygen.

Question 9

The nurse assessing a patient with multiple injuries is concerned about the patient's ability to maintain adequate oxygenation.Which explanation would the nurse provide for this increased concern?

Accepted Answer

A cervical neck injury and slight concussion can potentially affect the patient's ability to maintain adequate oxygenation. These types of injuries can lead to respiratory muscle weakness or respiratory arrest, which can cause hypoxia.

Question 10

A patient who is receiving chemotherapy is anemic and has low CaO₂ levels.Which nursing interventions offer the best support for this patient? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.

Accepted Answer

- Monitoring the administration of blood products is essential for an anemic patient to ensure they are receiving the correct type and amount of blood product to address their anemia.- Keeping the patient's oxygen cannula in place is important for ensuring they have adequate oxygenation, especially if they are anemic and their oxygen-carrying capacity is reduced.

Question 11

A patient injured in an explosion has a flail chest and crushing injuries to her left arm and leg.She is unconscious and is losing blood rapidly.Laboratory testing reveals impaired oxygenation.Nursing interventions should be implemented to improve which components of oxygenation disrupted by this injury? Note: Credit will be given only if all correct choices and no incorrect choices are selected.
Select all that apply.

Accepted Answer

A flail chest injury disrupts ventilation by impairing the mechanical aspect of breathing, leading to inadequate air exchange. The crushing injuries and rapid blood loss reduce hemoglobin concentration, which is crucial for oxygen transport in the blood. Reduced hemoglobin levels directly impact the body's ability to carry oxygen. Additionally, blood loss can lead to shock, which compromises blood flow to the lungs and other organs, further impairing oxygenation.

Question 12

A patient is being started on oxygen therapy for an oxygen saturation level of 84% on room air.The nurse expects that this therapy will be effective if oxygen enters the blood through which physiological process?

Accepted Answer

Oxygen therapy is effective when oxygen enters the blood through the physiological process of diffusion. Diffusion occurs when molecules move from an area of higher concentration to an area of lower concentration, which is the case with oxygen moving from the lungs into the bloodstream to be transported to the body's tissues. Osmosis and fluid shift refer more specifically to the movement of water molecules, while a concentration gradient refers to the difference in concentration between two areas. Therefore, option C) diffusion is the correct answer.

Question 13

A nurse reviewing arterial blood gas results identifies the oxygen saturation level as low.The nurse interprets this information to reflect changes in which process?

Accepted Answer

The oxygen saturation level refers to the ratio of oxygenated hemoglobin to total hemoglobin, which indicates how well oxygen is binding to hemoglobin in the blood. A low oxygen saturation level suggests that there may be insufficient oxygen in the blood, which can impair oxygen delivery to tissues and organs. This can occur due to various factors such as respiratory or circulatory dysfunction, anemia, or inadequate oxygen intake.

Question 14

A patient with chronic obstructive pulmonary disease (COPD)says,"I have to rest a lot.It just wears me out trying to breathe." The nurse interprets this statement to mean the patient has difficulty with which respiratory process?

Accepted Answer

Ventilation refers to the movement of air in and out of the lungs. In a patient with COPD, airway obstruction makes it difficult for air to flow in and out of the lungs, which can lead to feelings of breathlessness and fatigue. Therefore, the patient's statement "It just wears me out trying to breathe" suggests difficulty with ventilation.

Question 15

A patient is going to be assessed for oxygen consumption level.Which parameter will the nurse identify for this assessment?

Accepted Answer

Serum lactate level is used to assess oxygen consumption because elevated lactate levels can indicate inadequate oxygen delivery to tissues, leading to anaerobic metabolism.

Question 16

A patient has a hemoglobin level of 8.6 mg/dL.The nurse is concerned that which oxygenation component will be affected in this patient?

Accepted Answer

Hemoglobin is the protein in red blood cells that carries oxygen to the body's tissues. Hemoglobin is essential for oxygen delivery, so a low hemoglobin level indicates that less oxygen will be delivered to the tissues.

Question 17

The nurse is caring for a patient diagnosed with uncontrolled asthma.The nurse implements interventions to help control the effects of asthma on which element of the patient's pulmonary gas exchange?

Accepted Answer

Asthma primarily affects ventilation, which is the movement of air in and out of the lungs. In asthma, airway constriction and inflammation impede airflow, making it difficult for the patient to ventilate properly.

Question 18

A nurse is monitoring trends of a patient's SvO2 as a measure of oxygen delivery to tissues.The nurse would be concerned about the accuracy of this trending if which patient condition develops? Note: Credit will be given only if all correct choices and no incorrect choices are selected.
Select all that apply.

Accepted Answer

The answer of A nurse is monitoring trends of a...

Question 19

A patient tells the nurse that he feels more energetic when he wears oxygen.What would the nurse consider prior to responding to this statement?

Accepted Answer

Increasing the availability of oxygen can enhance cellular respiration, leading to the production of more ATP, which is the energy currency of the cell.

Question 20

A nurse is preparing a patient for pulmonary functioning testing (PFT).Which nursing statements will help to reinforce teaching about the purposes of these tests? Note: Credit will be given only if all correct choices and no incorrect choices are selected.
Select all that apply.

Accepted Answer

These statements accurately reflect the purposes of pulmonary functioning testing. Statement C is incorrect as insurance companies do not require PFTs before discharge from the hospital. Therefore, the correct choices are A, B, D, and E.

Quiz 34: Determinants and Assessment of Oxygenation

Arterial blood gases were drawn when a patient was discovered in cardiopulmonary arrest.Which results would the nurse evaluate as indicating global lactic acidosis? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.

A patient's mixed venous oxygen saturation level is 56%.What evaluation would the nurse make of this reading?

A patient is diagnosed with lactic acidosis.The nurse plans to provide care to a patient whose energy is being produced through which process?

The nurse is planning essential activities for a critically ill patient.In order to provide the least impact on oxygen consumption,the nurse would be certain the patient rests before and after which activity?

A patient is diagnosed with iron deficiency anemia.The nurse plans interventions for a patient with which most likely complication?

A patient's PaO₂ level is 56 mm Hg.The nurse would plan care to prevent development of which condition?

The nurse,caring for a patient with hypovolemic shock,is primarily concerned that which change could occur in this patient's pulmonary gas exchange?

The nurse is caring for a patient with impaired diffusion of oxygen secondary to pneumonia.Assessment findings related to this impairment are similar to those the nurse would see in patients with which other disease states?

The nurse assessing a patient with multiple injuries is concerned about the patient's ability to maintain adequate oxygenation.Which explanation would the nurse provide for this increased concern?

A patient who is receiving chemotherapy is anemic and has low CaO₂ levels.Which nursing interventions offer the best support for this patient? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.

A patient is being started on oxygen therapy for an oxygen saturation level of 84% on room air.The nurse expects that this therapy will be effective if oxygen enters the blood through which physiological process?

A nurse reviewing arterial blood gas results identifies the oxygen saturation level as low.The nurse interprets this information to reflect changes in which process?

A patient with chronic obstructive pulmonary disease (COPD) says,"I have to rest a lot.It just wears me out trying to breathe." The nurse interprets this statement to mean the patient has difficulty with which respiratory process?

A patient is going to be assessed for oxygen consumption level.Which parameter will the nurse identify for this assessment?

A patient has a hemoglobin level of 8.6 mg/dL.The nurse is concerned that which oxygenation component will be affected in this patient?

The nurse is caring for a patient diagnosed with uncontrolled asthma.The nurse implements interventions to help control the effects of asthma on which element of the patient's pulmonary gas exchange?

A patient tells the nurse that he feels more energetic when he wears oxygen.What would the nurse consider prior to responding to this statement?

A nurse is preparing a patient for pulmonary functioning testing (PFT) .Which nursing statements will help to reinforce teaching about the purposes of these tests? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.

Quiz 34: Determinants and Assessment of Oxygenation

Arterial blood gases were drawn when a patient was discovered in cardiopulmonary arrest.Which results would the nurse evaluate as indicating global lactic acidosis? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.

A patient's mixed venous oxygen saturation level is 56%.What evaluation would the nurse make of this reading?

A patient is diagnosed with lactic acidosis.The nurse plans to provide care to a patient whose energy is being produced through which process?

The nurse is planning essential activities for a critically ill patient.In order to provide the least impact on oxygen consumption,the nurse would be certain the patient rests before and after which activity?

A patient is diagnosed with iron deficiency anemia.The nurse plans interventions for a patient with which most likely complication?

A patient's PaO2 level is 56 mm Hg.The nurse would plan care to prevent development of which condition?

The nurse,caring for a patient with hypovolemic shock,is primarily concerned that which change could occur in this patient's pulmonary gas exchange?

The nurse is caring for a patient with impaired diffusion of oxygen secondary to pneumonia.Assessment findings related to this impairment are similar to those the nurse would see in patients with which other disease states?

The nurse assessing a patient with multiple injuries is concerned about the patient's ability to maintain adequate oxygenation.Which explanation would the nurse provide for this increased concern?

A patient who is receiving chemotherapy is anemic and has low CaO2 levels.Which nursing interventions offer the best support for this patient? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.

A patient is being started on oxygen therapy for an oxygen saturation level of 84% on room air.The nurse expects that this therapy will be effective if oxygen enters the blood through which physiological process?

A nurse reviewing arterial blood gas results identifies the oxygen saturation level as low.The nurse interprets this information to reflect changes in which process?

A patient with chronic obstructive pulmonary disease (COPD) says,"I have to rest a lot.It just wears me out trying to breathe." The nurse interprets this statement to mean the patient has difficulty with which respiratory process?

A patient is going to be assessed for oxygen consumption level.Which parameter will the nurse identify for this assessment?

A patient has a hemoglobin level of 8.6 mg/dL.The nurse is concerned that which oxygenation component will be affected in this patient?

The nurse is caring for a patient diagnosed with uncontrolled asthma.The nurse implements interventions to help control the effects of asthma on which element of the patient's pulmonary gas exchange?

A patient tells the nurse that he feels more energetic when he wears oxygen.What would the nurse consider prior to responding to this statement?

A nurse is preparing a patient for pulmonary functioning testing (PFT) .Which nursing statements will help to reinforce teaching about the purposes of these tests? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.

A patient's PaO₂ level is 56 mm Hg.The nurse would plan care to prevent development of which condition?

A patient who is receiving chemotherapy is anemic and has low CaO₂ levels.Which nursing interventions offer the best support for this patient? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply.