CH.10

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

44%

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

500 psi

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.

90

gas exchange in the lungs is facilitated by:

adequate amount of surfactant

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:

administer oxygen via a nonrebreathing mask

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-valve mask. After repositioning the mask several times, you are unable to effectively ventilate the patient. You should:

begin ventilations using the mouth-to-mask technique

intrapulmonary shunting occurs when:

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.

The primary waste product of aerobic metabolism is:

carbon dioxide

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

epiglottis

which of the following structures is contained within a mediastinum?

esophagus

the hypoxic drive is influenced by:

low blood oxygen levels

Complications associated with using a manually triggered ventilation device include:

lung tissue and gastric distention

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

muscle

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

requires CPR

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

shallow breathing

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:

stand behind him and administer abdominal thrusts

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

suctioning while withdrawing the catheter from the oropharynx

the main advantage of the Venturi mask is:

the use of its fine adjustment capabilities in the long-term management of physiologically stable patients.

which of the following statements regarding positive-pressure ventilation is correct:

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

a nasopharyngyeal airway is inserted:

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