(2022) EMR Chapter 7 - 6th Edition

If an adult with an airway obstruction becomes unresponsive, you should lay him or her on the ground and: A. perform a blind finger sweep. B. assess for a pulse for 10 seconds. C. attempt to give two rescue breaths. D. immediately begin chest compressions.

D. immediately begin chest compressions.

While ventilating a nonbreathing patient with a bag-valve mask device, you do not see the chest rise. Which of the following is the most likely cause of this? A. Air is leaking around the mask. B. You forgot to attach the reservoir. C. Oxygen is not attached to the device. D. There are thin secretions in the mouth.

A. Air is leaking around the mask.

Which of the following statements regarding the nasal cannula is correct? A. The flow rate should not exceed 6 L/min. B. It is preferred for patients in shock or with chest pain. C. At 3 L/min, it delivers up to 50% oxygen. D. It should be applied before adjusting the oxygen flow.

A. The flow rate should not exceed 6 L/min.

When ventilating an unconscious nonbreathing adult with a bag-valve mask device, you should: A. suction the airway first. B. deliver 24 breaths/min. C. slightly flex the patient's neck. D. insert an oral or nasal airway.

D. insert an oral or nasal airway.

When opening the airway of a patient who has a stoma, you should: A. hyperextend the patient's head. B. slightly flex the patient's head. C. perform the jaw-thrust maneuver. D. keep the patient's neck straight.

D. keep the patient's neck straight.

Common causes of respiratory arrest include all of the following, except: A. heart attack. B. drug overdose. C. electrocution. D. mild dehydration.

D. mild dehydration.

The appropriate rescue breathing rate for a 6-month-old infant is one breath every: A. 3 to 5 seconds. B. 5 to 6 seconds. C. 6 to 8 seconds. D. 8 to 10 seconds.

A. 3 to 5 seconds.

If an oxygen cylinder contains less than _____ psi, it should be replaced with a full cylinder. A. 500 B. 750 C. 1,000 D. 1,500

A. 500

While delivering your first rescue breath to an unconscious nonbreathing child, you see the chest visibly rise. You should next: A. allow the lungs to deflate before delivering the next breath. B. continue rescue breathing at a rate of 10 to 12 breaths/min. C. reopen the child's airway and deliver one breath every 5 to 6 seconds. D. insert an oral airway, suction the mouth, and continue rescue breathing.

A. allow the lungs to deflate before delivering the next breath.

The highest concentration of oxygen can be delivered to a patient with a bag-valve mask device if: A. an oxygen reservoir is attached. B. oxygen is attached to the device. C. the mask-to-face seal is adequate. D. the ventilation rate exceeds 24 breaths/min.

A. an oxygen reservoir is attached.

A young woman's 11-month-old infant presents with a sudden onset of difficulty breathing. The infant has an audible cry and normal skin color. Care for this infant includes: A. asking the mother what happened just before the episode began. B. performing five back slaps, five chest thrusts, and reassessing the infant. C. advising the mother to take her child to the closest hospital in her car. D. attempting to see a foreign object by looking in the infant's mouth.

A. asking the mother what happened just before the episode began.

You are the first medically trained person to arrive at the scene of a sick infant. As you enter the residence, a frantic woman hands you her pale, limp 6-month-old son. You tap the infant's foot and determine that he is unresponsive. You should next: A. assess for signs of adequate breathing while checking the brachial pulse. B. hyperextend the infant's head, open his airway, and check for breathing. C. immediately begin rescue breathing at a rate of 12 to 20 breaths/min. D. position the infant face down, deliver five back slaps, and then assess breathing.

A. assess for signs of adequate breathing while checking the brachial pulse.

Pulse oximetry is used to: A. assess the amount of oxygen saturated in red blood cells. B. determine the underlying cause of the patient's condition. C. assess the amount of carbon dioxide eliminated per breath. D. determine how much room air oxygen the patient is breathing.

A. assess the amount of oxygen saturated in red blood cells.

The most sensitive cells in the human body are in the: A. brain. B. lungs. C. heart. D. kidneys.

A. brain.

After manually opening an unconscious patient's airway, you should: A. check the mouth for secretions, foreign bodies, or dentures. B. insert an airway adjunct and begin rescue breathing at once. C. assess the patient's respiratory rate and administer oxygen. D. place the patient in the recovery position and observe him or her closely.

A. check the mouth for secretions, foreign bodies, or dentures.

The muscle between the chest and abdomen is called the: A. diaphragm. B. intercostal muscle. C. pectoralis muscle. D. hypoglossal muscle.

A. diaphragm.

When determining the correct size oral airway, you should measure from the: A. earlobe to the corner of the mouth. B. corner of the mouth to the back of the ear. C. center of the mouth to the curve of the jaw. D. curve of the jaw to the middle of the mouth.

A. earlobe to the corner of the mouth.

At a minimum, the EMR's life support kit should contain a ventilation device that: A. enables you to deliver rescue breaths without mouth-to-mouth contact. B. has an inlet that allows you to attach supplemental oxygen to the mask. C. has a strap that enables you to secure the device around the patient's head. D. is nondisposable and has a tube in between the mouthpiece and the mask.

A. enables you to deliver rescue breaths without mouth-to-mouth contact.

A patient with ___________ may appear to be in respiratory arrest, even though he or she is breathing. A. hypothermia B. a massive stroke C. severe blood loss D. vomitus in the mouth

A. hypothermia

The most immediate threat associated with gastric distention is: A. increased risk of vomiting. B. decreased ability to ventilate. C. increased ventilation volume. D. a severe upper airway obstruction.

A. increased risk of vomiting.

When inserting a nasal airway, you should: A. insert the airway into the larger nostril first. B. follow the curvature of the roof of the nose. C. insert the airway with the bevel facing outward. D. coat the airway with a petroleum-based lubricant.

A. insert the airway into the larger nostril first.

A 40-year-old woman struck a tree with her car at a high rate of speed. You arrive at the scene, ensure that it is safe, and gain access to the patient. The woman is lying motionless across the front seat of her vehicle. You should: A. open her airway with the jaw-thrust maneuver. B. turn her head to the side in the event that she vomits. C. carefully tilt her head back and assess for breathing. D. briskly shake her to determine whether she is responsive.

A. open her airway with the jaw-thrust maneuver.

If you are by yourself and a child with an airway obstruction becomes unresponsive, you should: A. perform five cycles of CPR and then activate EMS. B. immediately call EMS and then return to the child. C. lay the child supine and perform abdominal thrusts. D. roll the child on his or her side and deliver back slaps.

A. perform five cycles of CPR and then activate EMS.

The purpose of the recovery position is to: A. prevent secretions from entering the trachea. B. ensure that the patient is breathing adequately. C. facilitate placement of an oral airway adjunct. D. protect an injured patient's neck from further injury.

A. prevent secretions from entering the trachea.

While managing the airway of a semiconscious 50-year-old woman, you attempt to insert a nasal airway but meet resistance. You should: A. remove the airway and try to insert it in the other nostril. B. elevate the patient's head and reattempt insertion of the airway. C. remove the nasal airway and insert an oral airway. D. continue to gently insert the airway until it is correctly placed.

A. remove the airway and try to insert it in the other nostril.

A 70-year-old woman was found unconscious in her bed. She has a pulse, but is gurgling when she breathes. You should: A. roll the patient onto her side, carefully sweep out her mouth with your finger, and reassess her breathing. B. perform a blind finger sweep of her mouth to clear her airway and then insert an oropharyngeal airway. C. remove any dentures if present, suction her mouth for up to 20 seconds, and reassess her breathing. D. administer high-flow oxygen and then place her in the recovery position until EMTs or paramedics arrive.

A. roll the patient onto her side, carefully sweep out her mouth with your finger, and reassess her breathing.

The lungs are protected by the _________ at the front and by the _________ at the sides and back. A. sternum, rib cage B. diaphragm, sternum C. rib cage, diaphragm D. sternum, diaphragm

A. sternum, rib cage

You are assessing a conscious 5-year-old child who experienced a sudden inability to speak or cough while playing with a small toy. The child appears sleepy and has pale skin. You should: A. suspect a severe airway obstruction. B. deliver five back slaps and five chest thrusts. C. begin CPR and activate the EMS system. D. intervene only if the child loses consciousness.

A. suspect a severe airway obstruction.

A mild airway obstruction is characterized by all of the following, except: A. unconsciousness. B. difficulty speaking. C. coughing or gagging. D. partial airway blockage.

A. unconsciousness.

For purposes of rescue breathing, a child is a person between: A. 1 and 8 years of age. B. 1 and 12 to 14 years of age. C. 1 and 16 to 18 years of age. D. 1 and 21 years of age.

B. 1 and 12 to 14 years of age.

A child's airway should be suctioned for no longer than _____ seconds at a time. A. 5 B. 10 C. 15 D. 20

B. 10

In which of the following situations should you perform the jaw-thrust maneuver? A. 29-year-old patient found semiconscious on her couch B. 40-year-old unresponsive patient who fell from a ladder C. 49-year-old conscious patient who was in a vehicle crash D. 55-year-old semiconscious patient with low blood sugar

B. 40-year-old unresponsive patient who fell from a ladder

Which of the following conditions would most likely require high-flow (90% or higher) oxygen? A. Slight shortness of breath B. Carbon monoxide poisoning C. Isolated fracture of the ankle D. Panic attack with hyperventilation

B. Carbon monoxide poisoning

Which of the following represents the most appropriate order for managing the airway of an unconscious, uninjured patient with adequate breathing? A. Perform the jaw-thrust maneuver, insert a nasal airway, check the airway for secretions, and place the patient in the recovery position. B. Perform the head tilt-chin lift maneuver, check the airway for secretions, insert an oral airway, and place the patient in the recovery position. C. Perform the jaw-thrust maneuver, place the patient in the recovery position, check the airway for secretions, and insert a nasal airway. D. Perform the head tilt-chin lift maneuver, check the airway for secretions, place the patient in the recovery position, and insert an oral airway.

B. Perform the head tilt-chin lift maneuver, check the airway for secretions, insert an oral airway, and place the patient in the recovery position.

Which of the following techniques will most likely enable you to deliver adequate volume when ventilating a patient with a bag-valve mask device? A. Place the thumb and index finger over the mask, forming a "C," and applying pressure to the mask. B. Place the middle, ring, and little fingers of one hand under the angle of the jaw and lift up on the jaw. C. Insert an oral or nasal airway and maintain the patient's head in a slightly flexed position to keep the airway open. D. Place the angled end of the mask against the groove between the lower lip and chin and the rounded end over the bridge of the nose.

B. Place the middle, ring, and little fingers of one hand under the angle of the jaw and lift up on the jaw.

What should you do if the chest of a stoma patient does not rise during your attempt to ventilate? A. Reposition the head and reattempt to ventilate. B. Seal the mouth and nose and reattempt to ventilate. C. Hyperextend the patient's head and reattempt to ventilate. D. Suction the patient's stoma for no longer than 20 seconds.

B. Seal the mouth and nose and reattempt to ventilate.

Air normally enters the body through the: A. mouth and trachea. B. oropharynx and trachea. C. trachea and nasopharynx. D. nasopharynx and oropharynx.

D. nasopharynx and oropharynx.

Which of the following statements regarding oxygen is correct? A. Under normal conditions, the body requires 30% oxygen to survive. B. Stroke patients may be unable to get sufficient oxygen from room air. C. Room air is abundant in oxygen, containing approximately 60%. D. Oxygen administration by the EMR requires approval by a paramedic.

B. Stroke patients may be unable to get sufficient oxygen from room air.

You are providing mouth-to-mask rescue breathing on a 17-year-old boy when you note that his abdomen appears to be distending. You should: A. immediately increase the rate and depth of your rescue breaths. B. breathe slowly into the patient's mouth until the chest rises visibly. C. apply firm pressure to the abdomen to remove air from the stomach. D. suction the patient's mouth until the abdomen becomes less distended.

B. breathe slowly into the patient's mouth until the chest rises visibly.

Rescue breathing in the adult is adequate if: A. the patient's abdomen rises and falls with each breath. B. breaths are delivered over 1 second and the chest rises. C. breaths are delivered at a rate of 12 to 20 times per minute. D. the patient's head is in a flexed position during each breath.

B. breaths are delivered over 1 second and the chest rises.

After adjusting the oxygen flow rate on the nonrebreathing mask to the desired setting, you should next: A. attach the tubing to the oxygen flowmeter. B. ensure that the reservoir bag is completely full. C. apply the mask to the patient and secure the straps. D. remove the one-way valves from the side of the mask.

B. ensure that the reservoir bag is completely full.

When a person swallows food or liquid, it does not enter the trachea because the: A. esophagus is a larger opening than the trachea. B. epiglottis covers the trachea during swallowing. C. muscles of the larynx spasm during swallowing. D. trachea briefly closes during the swallowing process.

B. epiglottis covers the trachea during swallowing.

Nasal airways can be used: A. in conscious patients only. B. in both conscious and unconscious patients. C. only in semiconscious patients with a gag reflex. D. only in unconscious patients without a gag reflex.

B. in both conscious and unconscious patients.

"Adam's apple" and "voicebox" are other terms used to describe the: A. throat. B. larynx. C. pharynx. D. oropharynx.

B. larynx.

The main purpose of the oral airway is to: A. allow simultaneous suctioning and rescue breathing. B. maintain the airway after it has been opened manually. C. replace either the head tilt-chin lift or jaw-thrust maneuver. D. prevent secretions from entering the trachea and lungs.

B. maintain the airway after it has been opened manually.

The oropharynx is also known as the: A. nose. B. mouth. C. throat. D. windpipe.

B. mouth.

When assessing for breathing in an unresponsive patient, you should: A. listen for airflow at the nose. B. observe the chest for visible rise. C. listen for airflow at the mouth. D. listen to the lungs with a stethoscope.

B. observe the chest for visible rise.

When administering supplemental oxygen to a patient, it is important to remember that: A. oxygen is a highly flammable gas. B. oxygen actively supports combustion. C. a minimum of 6 L/min must be given. D. the cylinder must contain at least 1,000 psi.

B. oxygen actively supports combustion.

Suctioning of an adult patient's mouth is limited to 15 seconds at a time because: A. prolonged suctioning often causes soft tissue damage. B. oxygen is being removed from the patient as well as secretions. C. most suction devices automatically turn off after 15 seconds. D. any patient who needs suctioning also needs rescue breathing.

B. oxygen is being removed from the patient as well as secretions.

During your assessment of a semiconscious uninjured 19-year-old man, you note that his airway is open and his respirations are 14 breaths/min with adequate depth. You should: A. insert an oral airway and provide rescue breathing at a rate of 10 to 12 breaths/min. B. place the patient in the recovery position and closely monitor his breathing rate and depth. C. suction his mouth for 15 seconds and then insert a nasal airway to keep his airway open. D. place the patient in a supine position and maintain an open airway by using the jaw- thrust maneuver.

B. place the patient in the recovery position and closely monitor his breathing rate and depth.

A person who has had an obstruction from his or her airway removed by the Heimlich maneuver: A. will likely experience another airway obstruction. B. should be transported to the hospital for evaluation. C. often develops cardiac arrest within 3 to 4 minutes. D. should be advised to go home and get adequate sleep.

B. should be transported to the hospital for evaluation.

A car screeches up to your station shortly before you hear a frantic knock at the door. When you answer the door, a young woman tells you that her father is choking. The patient, a 60-year-old man, is clutching his throat. You ask him if he is choking, but he does not respond to your question. You should: A. repeat your question and wait for him to respond. B. stand behind the man and deliver abdominal thrusts. C. look in the man's mouth and try to visualize the object. D. lay the man on the ground and begin chest compressions.

B. stand behind the man and deliver abdominal thrusts.

Patients who have experienced carbon monoxide poisoning may have false pulse oximetry readings because: A. carbon monoxide poisoning causes low perfusion. B. their red blood cells are not saturated with oxygen. C. carbon dioxide increases the oxygen content of the blood. D. high levels of carbon dioxide are produced by carbon monoxide.

B. their red blood cells are not saturated with oxygen.

If a patient speaks to you when you ask if he or she can hear you: A. the patient is breathing without difficulty. B. you may assume that the airway is patent. C. the patient's heart rate is at least 80 beats/min. D. you should perform a manual airway maneuver.

B. you may assume that the airway is patent.

Which of the following is an appropriate ventilation rate for an infant or child? A. 8 breaths/min B. 10 breaths/min C. 15 breaths/min D. 24 breaths/min

C. 15 breaths/min

A self-inflating bag-valve mask device will deliver _____ oxygen without supplemental oxygen attached. A. 12% B. 16% C. 21% D. 55%

C. 21%

In a healthy patient, the oxygen saturation should be at least _____ when breathing room air. A. 90% B. 93% C. 95% D. 99%

C. 95%

Which of the following statements regarding dental appliances is correct? A. You should always remove dental appliances before attempting rescue breathing. B. Dental appliances usually do not present a challenge when performing rescue breathing. C. Do not remove dental appliances that are firmly attached in the patient's mouth. D. Dental appliances result in an ineffective seal between the mask and the patient's mouth.

C. Do not remove dental appliances that are firmly attached in the patient's mouth.

Your assessment of a 7-year-old girl reveals that she is unresponsive. What should you do? A. Immediately call 9-1-1 and return to the child to continue your assessment. B. Hyperextend the child's head and listen and feel for air movement from the nose. C. Quickly visualize her chest for obvious movement while assessing for a carotid pulse. D. Place her in the recovery position and suction her mouth for no longer than 10 seconds.

C. Quickly visualize her chest for obvious movement while assessing for a carotid pulse.

The appropriate landmark for performing abdominal thrusts on a conscious patient with a severe airway obstruction is: A. directly over the patient's navel. B. slightly below the xiphoid process. C. above the navel and below the xiphoid process. D. approximately 1" to 2" (2.5 to 5 cm) below the patient's navel.

C. above the navel and below the xiphoid process.

Adequate ventilation of an adult patient with a bag-valve mask device is best accomplished: A. by consistently providing one breath every 3 to 5 seconds. B. by delivering each ventilation over a period of 2 to 3 seconds. C. as a two-person operation, if additional rescuers are available. D. by attaching supplemental oxygen and a reservoir to the device.

C. as a two-person operation, if additional rescuers are available.

Airway obstruction removal attempts in a conscious infant consist of: A. abdominal thrusts. B. chest compressions. C. back slaps and chest thrusts. D. back slaps and blind finger sweeps.

C. back slaps and chest thrusts.

If you are unable to open an injured patient's airway with the jaw-thrust maneuver, you should: A. suction the airway and reattempt the jaw-thrust maneuver. B. make repeated attempts to perform the jaw-thrust maneuver. C. carefully perform the head tilt-chin lift maneuver. D. perform a blind finger sweep of the patient's mouth.

C. carefully perform the head tilt-chin lift maneuver.

When performing abdominal thrusts on a conscious patient with a severe airway obstruction, you should: A. reassess the patient after every set of 10 thrusts. B. ensure that the patient is lying supine on the ground. C. continue the thrusts until the patient becomes unresponsive. D. perform each thrust using one hand directly over the navel.

C. continue the thrusts until the patient becomes unresponsive.

Air is drawn into the lungs through the trachea when the: A. diaphragm relaxes and the rib cage recoils. B. rib cage recoils and the diaphragm flattens. C. diaphragm contracts and the rib cage expands. D. rib cage expands and the diaphragm ascends.

C. diaphragm contracts and the rib cage expands.

Generally speaking, the most common foreign object that causes an airway obstruction is: A. the tongue. B. a blood clot. C. food or candy. D. a small toy.

C. food or candy.

When using a nonrebreathing mask, you should adjust the liter flow to: A. maintain an oxygen saturation of at least 85% to 90%. B. 10 L/min to deliver 90% to 100% oxygen. C. keep the bag partially inflated when the patient inhales. D. less than 6 L/min for patients who are claustrophobic.

C. keep the bag partially inflated when the patient inhales.

The purpose of the jaw-thrust maneuver is to: A. open the airway of an unconscious uninjured patient. B. keep the airway clear of foreign bodies or secretions. C. open a patient's airway without manipulating the neck. D. maintain the airway of a conscious patient who was injured.

C. open a patient's airway without manipulating the neck.

A person could survive for several days to weeks without all of the following, except: A. food. B. water. C. oxygen. D. nutrients.

C. oxygen.

A snoring sound heard when an unconscious patient is breathing is most often the result of: A. blood or other fluids in the upper airway. B. narrowing of the upper airway structures. C. partial blockage of the airway by the tongue. D. a respiratory rate that is too slow or too fast.

C. partial blockage of the airway by the tongue.

The proper oxygen flow rate is determined by the: A. size of the cylinder you are using and the pressure within it. B. presence of heat, flames, or oily substances near the cylinder. C. patient's condition and type of oxygen delivery device used. D. amount of time that it will likely take to transport the patient.

C. patient's condition and type of oxygen delivery device used.

The main purpose of the respiratory system is to: A. ensure that the body receives a constant supply of carbon dioxide. B. deliver oxygenated blood to all of the tissues and organs in the body. C. provide oxygen to and remove carbon dioxide from the red blood cells. D. convert oxygen to carbon dioxide during the process of metabolism.

C. provide oxygen to and remove carbon dioxide from the red blood cells.

You are having difficulty providing rescue breaths to a nonbreathing elderly woman. You look in her mouth and note that she has loosely fitting dentures. You should: A. tilt her head back to stabilize the dentures in her mouth. B. leave the dentures in place and continue rescue breathing. C. remove the dentures and continue providing rescue breaths. D. reposition the patient's head and reattempt rescue breathing.

C. remove the dentures and continue providing rescue breaths.

When inserting an oral airway in an adult, you should: A. guide the tip along the curvature of the patient's tongue. B. insert the airway in the same direction it will rest in the mouth. C. rotate the airway 180° until the flange rests on the patient's teeth. D. continuously suction the patient's mouth to keep it clear of fluids.

C. rotate the airway 180° until the flange rests on the patient's teeth.

Initial attempts to clear a patient's airway of foreign material should be performed by: A. performing abdominal thrusts. B. thoroughly suctioning the mouth. C. sweeping the mouth with your finger. D. placing the patient in the recovery position.

C. sweeping the mouth with your finger.

You should not insert a nasal airway in a patient: A. who is semiconscious. B. who has had a major stroke. C. with a possible head injury. D. younger than 20 years.

C. with a possible head injury.

The pulse oximeter may not provide an accurate reading if the: A. peripheral blood vessels are dilated. B. patient is breathing slowly or shallowly. C. core of the patient's body is too warm. D. patient's fingers or earlobes are cold.

D. patient's fingers or earlobes are cold.

What are the appropriate ventilation duration and rate for an adult patient who is not breathing but who has a pulse? A. 1 second, 8 to 10 breaths/min B. 2 seconds, 10 to 12 breaths/min C. 2 seconds, 12 to 20 breaths/min D. 1 second, 10 to 12 breaths/min

D. 1 second, 10 to 12 breaths/min

A normal adult's resting respiratory rate typically ranges between: A. 8 and 10 breaths/min. B. 10 and 12 breaths/min. C. 12 and 15 breaths/min. D. 12 and 20 breaths/min.

D. 12 and 20 breaths/min.

The appropriate ventilation rate for a nonbreathing 10-year-old child is: A. 8 to 10 breaths/min. B. 10 to 12 breaths/min. C. 12 to 15 breaths/min. D. 12 to 20 breaths/min.

D. 12 to 20 breaths/min.

Which of the following statements regarding the brain's oxygen needs is correct? A. Brain cells are less sensitive to oxygen than are liver cells. B. The brain can survive up to 15 minutes without oxygen. C. A brief lack of oxygen to the brain always results in death. D. Brain cells cannot be replaced once they have been destroyed.

D. Brain cells cannot be replaced once they have been destroyed.

Which of the following statements regarding infants and children is false? A. An infant's or child's airway is more easily blocked by secretions. B. A child's tongue is proportionately larger than an adult's tongue. C. Infants and children require smaller breaths during rescue breathing. D. Cardiac arrest in infants and children is often the result of heart disease.

D. Cardiac arrest in infants and children is often the result of heart disease.

Which of the following occurs during alveolar ventilation? A. Incoming carbon dioxide passes from the alveoli into the blood, and outgoing oxygen passes from the blood into the alveoli. B. Incoming oxygen passes from the blood into the alveoli, and outgoing carbon dioxide passes from the alveoli into the blood. C. Outgoing carbon dioxide passes from the alveoli into the blood, and incoming oxygen passes from the blood into the alveoli. D. Incoming oxygen passes from the alveoli into the blood, and outgoing carbon dioxide passes from the blood into the alveoli.

D. Incoming oxygen passes from the alveoli into the blood, and outgoing carbon dioxide passes from the blood into the alveoli.

Which of the following statements regarding pulse oximetry is correct? A. In many cases, pulse oximetry can identify the patient's problem. B. Vessel constriction causes a falsely high pulse oximetry reading. C. Pulse oximetry provides an accurate reading, even with blood loss. D. Pulse oximetry should not replace a thorough patient assessment.

D. Pulse oximetry should not replace a thorough patient assessment.

Which of the following statements regarding the nasal airway is correct? A. Nasal airways often cause the patient to vomit. B. A whistle-tip catheter will fit through a nasal airway. C. Patients tolerate a nasal airway less than an oral airway. D. The nasal airway does not allow suctioning of the nose.

D. The nasal airway does not allow suctioning of the nose.

Which of the following statements regarding the oral airway is correct? A. The oral airway cannot be used in patients without a gag reflex. B. The oral airway should not be used in unconscious breathing patients. C. Oral airways do not allow you to suction the patient's mouth. D. Use of an oral airway is contraindicated in patients who are conscious.

D. Use of an oral airway is contraindicated in patients who are conscious.

Once the pressure in an oxygen cylinder has been regulated to about 50 pounds per square inch (psi): A. a maximum of 8 to 10 L/min can safely be given to a patient. B. the gasket in between the cylinder and regulator is not needed. C. it will deliver oxygen for 20 minutes, regardless of the liter flow. D. a flowmeter is then used to deliver the appropriate oxygen rate.

D. a flowmeter is then used to deliver the appropriate oxygen rate.

You are working in your yard when you see your neighbor, a middle-aged woman, collapse in her front yard. You should: A. place the patient in the recovery position and then EMS. B. immediately call 9-1-1 and then return to the patient to assess her. C. perform about 2 minutes of CPR if needed and then activate EMS. D. activate EMS after assessing the patient's level of responsiveness.

D. activate EMS after assessing the patient's level of responsiveness.

The first step in caring for a conscious person who may have an obstructed airway is to: A. perform a finger sweep. B. open the patient's airway. C. perform 5 to 10 abdominal thrusts. D. ask the patient if he or she is choking.

D. ask the patient if he or she is choking.

The alveoli in the lungs are surrounded by very small blood vessels called: A. veins. B. venules. C. arterioles. D. capillaries.

D. capillaries.

A distinct disadvantage of the one-rescuer bag-valve mask technique is: A. hyperventilation from squeezing the bag too forcefully. B. an inability to keep the airway open during ventilations. C. the risk of lung injury from excessive tidal volume delivery. D. difficulty in maintaining an adequate mask-to-face seal.

D. difficulty in maintaining an adequate mask-to-face seal.

While eating in a restaurant, you see a man sitting at a nearby table suddenly stand up and begin coughing forcefully. His wife franticly screams, "He's choking!" and begs for someone to help. You should: A. deliver back slaps until the man stops coughing and can speak easily. B. perform abdominal thrusts until the man expels the obstructing object. C. perform the Heimlich maneuver only if the man has difficulty speaking. D. encourage the man to keep coughing and ask an employee to call 9-1-1.

D. encourage the man to keep coughing and ask an employee to call 9-1-1.

Chest thrusts should be performed on: A. responsive patients with difficulty speaking. B. thin patients with a severe airway obstruction. C. obese patients who are able to cough forcefully. D. patients who are in the later stages of pregnancy.

D. patients who are in the later stages of pregnancy.

A nonrebreathing mask works by: A. allowing the patient to breathe low-flow oxygen with the use of a reservoir. B. preventing the patient from breathing oxygen concentrations that are too high. C. blending high-flow oxygen and room air via the ports on the sides of the mask. D. storing oxygen in the reservoir bag, which the patient inhales during each breath.

D. storing oxygen in the reservoir bag, which the patient inhales during each breath.

You have just pulled your neighbor's 3-year-old daughter from a swimming pool. The child's father does not know how long she was submerged in the water. Your assessment reveals that the child is unresponsive, is not breathing, and has a weak pulse. You should: A. perform up to five abdominal thrusts to force water from the child's lungs. B. leave the child with her father, call 9-1-1, and then return to initiate care. C. perform rescue breathing for 2 minutes and then activate the EMS system. D. tell the father to activate the EMS system as you initiate rescue breathing.

D. tell the father to activate the EMS system as you initiate rescue breathing.