EMT Chapter 9 Quiz

The pressure of gas in a full cylinder of oxygen is approximately ______ pounds per square inch (psi). a.) 500 b.) 1,000 c.) 1,500 d.) 2,000

2,000

At a flow rate of 6 L/min, a nasal cannula can deliver an approximate oxygen concentration of up to: a.) 24% b.) 35% c.) 44% d.) 52%

44%

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? a.) 5,600 mL b.) 6,000 mL c.) 7,400 mL d.) 8,000 mL

5,600 mL

An oxygen cylinder should be taken out of service and refilled when the pressures inside it is less than: a.) 200 psi b.) 500 psi c.) 1,000 psi d.) 1,500 psi

500 psi

Mouth to mask w O2 %

55%

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? a.) 45% b.) 55% c.) 65% d.) 75%

55%

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.) 70 b.) 80 c.) 90 d.) 100

90

nonrebreather % LPM

90% 10-15 LPM

Hypoxia is MOST accurately defined as: a.) low venous oxygen levels b.) a decrease in arterial oxygen levels c.) an increase in carbon dioxide in the blood d.) inadequate oxygen to the tissues and cells

inadequate oxygen to the tissues and cells

Bag Valve Mask % LPM

100% 15 LPM

The partial pressure of oxygen in the alveoli is ______ mm Hg, while the partial pressure of carbon dioxide in the alveoli is ______ mm Hg. a.) 70, 28 b.) 88, 30 c.) 90, 50 d.) 104, 40

104, 40

Each cell of the body combines nutrients and oxygen and produces energy and waste products through a process called: a.) respiration b.) ventilation c.) metabolism d.) oxygenation

Metabolism

Which of the following patients should you place in the recovery position? a.) a 19-year-old conscious male with a closed head injury and normal respirations b.) a 24-year-old unconscious female who overdosed and has a reduced tidal volume c.) a 31-year-old semiconscious male with low blood sugar and adequate breathing d.) a 40-year-old conscious female with a possible neck injury and regular respirations

a 31-year-old semiconscious male with low blood sugar and adequate breathing

What occurs when a patient is breathing very rapidly and shallowly? a.) minute volume increases because of a marked increase in both tidal volume and respiratory rate b.) air moves primarily in the anatomic dead space and does not participate in pulmonary gas exchange c.) air is forcefully drawn into the lungs due to the negative pressure created by the rapid respirations d.) the majority of tidal volume reaches the lungs and diffuses across the alveolar-capillary membrane

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

The nasopharyngeal airway is MOST beneficial because it: a.) can effectively stabilize fractured nasal bones if it is inserted properly b.) is generally well tolerated in conscious patients with an intact gag reflex c.) effectively maintains the airway of a patient in cardiopulmonary arrest d.) can maintain a patent airway in a semiconscious patient with a gag reflex

can maintain a patent airway in a semiconscious patient with a gag reflex

The jaw-thrust maneuver is used to open the airway of patients with suspected: a.) mandibular fractures b.) upper airway swelling c.) cervical spine injuries d.) copious oral secretions

cervical spine injuries

Inhalation occurs when the: a.) diaphragm and intercostal muscles relax and cause an increase in intrathoracic pressure b.) diaphragm and intercostal muscles ascend and cause an increase in intrathoracic pressure c.) diaphragm and intercostal muscles contract and cause a decrease in intrathoracic pressure d.) diaphragm ascends and the intercostal muscles contact, causing a decrease in intrathoracic pressure

diaphragm and intercostal muscles contract and cause a decrease in intrathoracic pressure

A 37-year-old male has 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: a.) a series of back blows and chest thrusts b.) finger sweeps to remove the obstruction c.) performing a series of abdominal thrusts d.) encouraging him to cough and transporting

encouraging him to cough and transporting

Structures of the lower airway include all of the following, EXPECT the: a.) alveoli b.) trachea c.) epiglottis d.) bronchioles

epiglottis

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 is has decreased significantly from previous readings. You elevate the patient's legs, but this action has no effect. You should: a.) reevaluate the rate and volume of your ventilations b.) perform a head-to-toe assessment to look for bleeding c.) increase the volume of your ventilations and reassess his blood pressure d.) ensure that you are delivery one breath every 3 to 5 seconds

reevaluate the rate and volume of your ventilations

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: a.) continue to insert the airway as you suction her oropharynx b.) remove the airway and be prepared to suction her oropharynx c.) insert the airway no further but leave it in place as a bite block d.) select a smaller oropharyngeal airway and attempt to insert it

remove the airway and be prepared to suction her oropharynx

Central chemoreceptors located in the medulla provide feedback to increase the rate and depth of breathing when they sense: a.) slight elevations in carbon dioxide or a decrease in the pH of the cerebrospinal fluid b.) slight decreases in carbon dioxide and an increase in the pH of the cerebrospinal fluid c.) decreased levels of oxygen in the blood and an increase in the pH of the cerebrospinal fluid d.) increased levels of oxygen in the blood and a decrease in the pH of the cerebrospinal fluid

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

Proper technique for suctioning the oropharynx of an adult patient includes: a.) continuously suctioning patients with copious oral secretions b.) suctioning while withdrawing the catheter from the oropharynx c.) removing large, solid objects with a tonsil-tip suction catheter d.) suctioning for up to 1 minute if the patient is well oxygenated

suctioning while withdrawing the catheter from the oropharynx