Chapter 11 Quiz

is a passive process caused by increased intrathoracic pressure.

In contrast to inhalation, exhalation:

cellular tissue damage occurs from excessive oxygen levels in the blood.

Oxygen toxicity is a condition in which:

suctioning while withdrawing the catheter from the oropharynx.

Proper technique for suctioning the oropharynx of an adult patient includes:

when the patient cannot tolerate a nonrebreathing mask.

The nasal cannula is MOST appropriately used in the prehospital setting:

hypercarbia.

The presence of elevated carbon dioxide levels in the blood is called:

2,000

The pressure of gas in a full cylinder of oxygen is approximately _______ pounds per square inch (psi).

external respiration.

The process of exchanging oxygen and carbon dioxide between the alveoli and the blood of the capillaries is called:

ensure that the correct regulator is used for the cylinder.

The purpose of the pin-indexing system for compressed gas cylinders is to:

corner of the mouth to the earlobe.

To select the proper size oropharyngeal airway, you should measure from the:

remove the airway and be prepared to suction her oropharynx.

A 19-year-old female is found unconscious by her roommate. Your primary assessment reveals that her breathing is inadequate. As you insert an oropharyngeal airway, she begins to gag violently. You should:

encouraging him to cough and transporting.

A 37-year-old male has an apparent foreign body airway obstruction. He is conscious and alert and is coughing forcefully. His skin is pink, warm, and moist. The MOST appropriate treatment for this patient includes:

Carbon monoxide poisoning

A man was found unresponsive in his bed at home. There is no evidence of injury, and the patient's medical history is not known. The patient's face is cherry red, yet the pulse oximeter reads 98%. Which of the following would MOST likely explain this?

with the bevel facing the septum if inserted into the right nare.

A nasopharyngeal airway is inserted:

nonrebreathing mask.

A patient who is suspected of being hypoxic and is breathing adequately should be given supplemental oxygen with a:

increasing the amount of delivered tidal volume.

All of the following will help minimize the risk of gastric distention when ventilating an apneic patient with a bag-mask device, EXCEPT:

12 and 20 breaths/min.

An adult at rest should have a respiratory rate that ranges between:

500 psi.

An oxygen cylinder should be taken out of service and refilled when the pressure inside it is less than:

requires CPR.

An unconscious patient found in a prone position must be placed in a supine position in case he or she:

inadequate oxygen to the tissues and cells.

Hypoxia is MOST accurately defined as:

mouth-to-mask technique with a one-way valve.

As the single EMT managing an apneic patient's airway, the preferred initial method of providing ventilations is the:

Exposure to carbon monoxide and an oxygen saturation of 94%

Based on current guidelines, in which of the following situations should supplemental oxygen be administered?

apneic oxygenation.

High-flow oxygen with a nasal cannula during the preoxygenation phase of endotracheal intubation is called:

slight increases in carbon dioxide or a decrease in the pH of the cerebrospinal fluid.

Central chemoreceptors located in the medulla provide feedback to increase the rate and depth of breathing when they sense:

It forces the alveoli open and increases the concentration of oxygen in the alveoli.

How does CPAP improve oxygenation and ventilation in patients with certain respiratory problems?

It increases intrathoracic pressure, which decreases venous return to the heart and causes a decrease in cardiac output.

How does positive-pressure ventilation affect cardiac output?

a lower airway obstruction.

During your assessment of a patient with respiratory distress, you hear wheezing when listening to breath sounds. This indicates:

Croup

For which of the following conditions would the EMT most likely administer humidified oxygen?

adequate amounts of surfactant.

Gas exchange in the lungs is facilitated by:

aerobic metabolism.

In the presence of oxygen, the cells convert glucose into energy through a process called:

blood coming from the right side of the heart bypasses nonfunctional alveoli and returns to the left side of the heart in an unoxygenated state.

Intrapulmonary shunting occurs when:

Cheyne-Stokes respirations.

Irregular respirations characterized by an increasing rate and depth of breathing followed by periods of apnea are called:

hypoxia due to prolonged suction attempts.

The MOST significant complication associated with oropharyngeal suctioning is:

phrenic

The diaphragm is innervated by the _________ nerve, which allows it to contract.

low blood oxygen levels.

The hypoxic drive is influenced by:

cervical spine injuries.

The jaw-thrust maneuver is used to open the airway of patients with suspected:

Air moves primarily in the anatomic dead space and does not participate in pulmonary gas exchange.

What occurs when a patient is breathing very rapidly and shallowly?

300 mm Hg.

When testing a mechanical suctioning unit, you should turn on the device, clamp the tubing, and ensure that it generates a vacuum pressure of more than:

Muscle

Which of the following organs or tissues can survive the longest without oxygen?

A conscious male with respirations of 19 breaths/min and pink skin

Which of the following patients is breathing adequately?

A 40-year-old unconscious patient with slow, shallow respirations

Which of the following patients would MOST likely require insertion of an oropharyngeal airway?

Oxygen and carbon dioxide diffuse across the alveolar walls and capillaries.

Which of the following statements regarding normal gas exchange in the lungs is correct?

In mines or confined places, where oxygen levels are low, ventilation may continue despite inadequate oxygenation

Which of the following statements regarding oxygenation and ventilation is correct?

With positive-pressure ventilation, more volume is required to have the same effects as normal breathing.

Which of the following statements regarding positive-pressure ventilation is correct?

Adequate tidal volume is often difficult to achieve when one EMT is operating the bag-mask device.

Which of the following statements regarding the one-person bag-mask technique is correct?

Deep respirations

Which of the following would NOT cause a decrease in tidal volume?

Increased cardiac output

Which of the following would cause an increase in the amount of exhaled carbon dioxide?

90

With a good mask-to-face seal and an oxygen flow rate of 15 L/min, the nonrebreathing mask is capable of delivering up to ______% inspired oxygen.

remove her dentures, resume ventilations, and assess for adequate chest rise.

You are ventilating an apneic woman with a bag-mask device. She has dentures, which are tight fitting. Adequate chest rise is present with each ventilation, and the patient's oxygen saturation reads 96%. When you reassess the patency of her airway, you note that her dentures are now loose, although your ventilations are still producing adequate chest rise. You should:

roll her onto her side and remove the oral airway.

You have inserted an oral airway and are ventilating an apneic woman with a bag-mask device. She suddenly begins regurgitating large amounts of vomit. You should:

allow recoil of the chest between compressions to draw air into the lungs.

Your protocols state that during the first few minutes of working on a cardiac arrest patient, you should provide passive ventilation. This means that you will: