EMT Chapter 9 Practice Quiz

On which of the following patients would it be MOST appropriate to use the flow-restricted, oxygen-powered ventilation device?

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

You and your partner are caring for a critically injured patient. Your partner is controlling severe bleeding from the patient's lower extremities as you attempt ventilations with a bag-mask device. After repositioning the mask several times, you are unable to effectively ventilate the patient. You should:

Which of the following oxygen flowmeters is NOT affected by gravity and can be used in any position when attached to an oxygen cylinder?

You are ventilating a patient with a stoma; however, air is escaping from the mouth and nose. To prevent this, you should:

In which of the following patients would the head tilt-chin lift maneuver be the MOST appropriate method of opening the airway?

Which of the following is the MOST reliable indicator of adequately performed bag-mask ventilations in an apneic adult with a pulse?

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

Which of the following patients is breathing adequately?

While eating dinner, your partner suddenly grabs his throat and has a panicked look on his face. He has a weak cough, faint inspiratory stridor, and cyanosis around the lips. You should:

The __________ cartilage is a firm ring that forms the inferior part of the larynx.

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

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

The MOST serious complication associated with using a nasopharyngeal airway in a patient with trauma to the head or face is:

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

Which of the following statements regarding oxygen is correct?

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

The hypoxic drive—the primary stimulus to breathe for patients with certain chronic respiratory diseases—is influenced by:

Inhalation occurs when the:

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

You are ventilating a 40-year-old uninjured man who is apneic but has a pulse. When your partner reassesses his blood pressure, he notes that it has decreased significantly from previous readings. You elevate the patient's legs, but this action has no effect. You should:

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

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:

What is the minute volume of a patient with a tidal volume of 500 mL, a dead space volume of 150 mL, and a respiratory rate of 16 breaths/min?

Which of the following patients should you place in the recovery position?

Which of the following structures is NOT found in the upper airway?

The primary waste product of aerobic metabolism is:

A 51-year-old female presents with a sudden onset of difficulty breathing. She is conscious and alert and able to speak in complete sentences. Her respirations are 22 breaths/min and regular. You should:

Tidal volume is defined as the volume of air that:

Intrapulmonary shunting occurs when:

A ventilation/perfusion (V/Q ratio) mismatch occurs when:

The MOST significant complication associated with oropharyngeal suctioning is:

Gas exchange in the lungs is facilitated by:

The partial pressure of oxygen in the alveoli is _______ mm Hg, while the partial pressure of carbon dioxide in the alveoli is _______ mm Hg.

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

You and your partner are treating a 66-year-old man who experienced a sudden onset of respiratory distress. He is conscious but is unable to follow simple verbal commands. Further assessment reveals that his breathing is severely labored and his oxygen saturation is 80%. You should:

At a flow rate of 6 L/min, a nasal cannula can deliver an approximate oxygen concentration of up to:

You are dispatched to a residence where a middle-aged man was found unconscious in his front yard. There are no witnesses who can tell you what happened. You find him in a prone position; his eyes are closed and he is not moving. Your FIRST action should be to:

Structures of the lower airway include all of the following, EXCEPT the:

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

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.

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:

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

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

The actual exchange of oxygen and carbon dioxide occurs in the:

A 71-year-old male is semiconscious following a sudden, severe headache. There is vomitus on his face and his respirations are slow and shallow. The EMT must immediately:

The diaphragm functions as an involuntary muscle when a person:

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

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

Without adequate oxygen, the body's cells:

The main advantage of the Venturi mask is:

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

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:

The nasopharyngeal airway is MOST beneficial because it:

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

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

The physical act of moving air into and out of the lungs is called:

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:

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

If ventilation is impaired, carbon dioxide levels in the bloodstream will increase. This condition is called:

CPAP is indicated for patients who:

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

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

Which of the following structures is contained within the mediastinum?

Which of the following is NOT a possible cause of airway obstruction?

You are performing mouth-to-mask ventilations with oxygen connected and set at a flow rate of 15 L/min. What percentage of oxygen is your patient receiving?

What is the MOST common cause of airway obstruction in an unconscious patient?

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

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

Which of the following statements regarding breathing adequacy is correct?

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:

The purpose of the pin-indexing system that has been established for compressed gas cylinders is to:

Prior to applying a nonrebreathing mask on a patient, you must ensure that the:

The leaf-shaped structure located superior to the larynx is called the:

A nasopharyngeal airway is inserted:

Each cell of the body combines nutrients and oxygen and produces energy and waste products through a process called:

Which of the following factors will cause a decreased minute volume in an adult?

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

How does positive-pressure ventilation affect cardiac output?

In contrast to inhalation, exhalation:

A 23-year-old male experienced severe head trauma after his motorcycle collided with an oncoming truck. He is unconscious, has rapid and shallow breathing, and has copious bloody secretions in his mouth. How should you manage his airway?