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Airway MGMT and Ventilation- CH19
Mosby's Paramedic Textbook 3ED-R
195
Health Care
Undergraduate 1
11/10/2011

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Cards

Term
What is external respiration?
Definition
Its the transfer of oxygen and carbon dioxide between the inspired air and pulmonary capillaries
Term
What is internal respiration?
Definition
its the transfer of oxygen and carbon dioxide between the capillary red blood cells and tissues
Term
What is the atmospheric pressure at sea level?
Definition
760 mmHg
Term
Which part of ventilation is passive?
Definition
Expiration
Term
What is compliance
Definition
the ease with which the lungs and thorax expand during pressure changes
Term
during nose breathing, how much air way resistance is created
Definition
50%
Term
What are the most commonly used accessory muscles used?
Definition
Scalenes and the sternocleidomsastoid
Term
What is the average Tidal volume for an adult
Definition
500-600 mL
Term
Of the average tidal volume, how much of it is dead space  in cc's
Definition
150 mL
Term
during inhalation, how do the ribs move
Definition
up and out
Term
why do alveoli have a tendency to collapse
Definition
because of the recoil caused by the elastic fibers and surface tension
Term
what part of the airway provides most of the resistance during inhalation
Definition
the nose
Term
As the bronchial tree continues to branch towards the alveoli, does the airway resistance increase or decrease
Definition
it decreases because of the large increase in the total cross sectional diameter of the airway
Term
This accessory muscle is found is the deep muscles of the neck and thorax
Definition
sternocleidomastoid
Term
What are the typical accessory muscles used during labored breathing
Definition
scalenes, sternocleidomastoid, posterior neck, back muscles, and abd muscles
Term
what is anatomical dead space
Definition
its the amount of inhaled air that never reaches the alveoli
Term
what is physiological dead space
Definition
its the anatomical dead space plus the volume of nonfunctional alveoli
Term
how many breaths does it take to replace residual volume
Definition
16 breaths
Term
What is the average tidal volume
Definition
500-600 ml
Term
how much of the tidal volume is dead space
Definition
1/5 or 500-600 ml
Term
what is the inspiratory reserve volume
Definition
it is the amount of gas that can be forcefully inhaled after inspiration of normal tidal volume
Term
how many cc's is the normal inspiratory reserve volume
Definition
2000-3000 cc
Term
define expiratory reserve volume
Definition
the amount of gas that can be forcefully exhaled after expiration of the normal tidal volume
Term
define residual volume
Definition
the gas that remains in the respiratory system after forced expiration
Term
what is the formula for inspiratory capacity
Definition
tidal volume plus the inspiratory reserve volume
Term
Define vital capacity
Definition
the volume of gas that can move on deepest inspiration and expiration
Term
what is the vital capacity formula
Definition
inspiratory reserve volume plus tidal volume plus expiratory reserve volume
Term
what is the normal vital capacity
Definition
4600 ml
Term
what is the formula for total lung capacity
Definition
sum of the vital capacity and the residual volume
Term
define minute volume
Definition
the amount of gas inhaled or exhaled in 1 min
Term
what is the minute volume formula
Definition
tidal volume* resp rate
Term
what is the average minute volume
Definition
5 L/min (avg tidal volume 500cc times resp rate -10= average minute volume)
Term
define minute alveolar ventilation
Definition
the amount of gas available for alvolear exchange (tidal volume - dead space)* resp rate
Term
what is the percentage of nitrogen in air
Definition
79%
Term
what is the percentage of o2 in the air
Definition
21%
Term
this is defines as all the chemical changes that occur in the body
Definition
metabolism
Term
this term describes the passive process of oxygen and co2 exchange
Definition
diffusion
Term
according to diffusion, the molecules have a tendency to do this
Definition
move from a high concentration to a lower concentration
Term
The diffusion of gases through liquid is determined by
Definition
the pressure of gases- that is why its harder to breath in high altitude environment
Term
what is the respiratory membrane
Definition
its is the think layer of tissue that separates alveolar air from pulmonary capillaries
Term
define atelectasis
Definition
it is the destruction of functioning alveoli
Term
what are the two ways that oxygen is dissolved in blood
Definition
most of it is dissolved in red blood cells and the other is plasma
Term
what is oxyhemoglobin
Definition
red blood cells that are chemically bound to hemoglobin
Term
how many oxygen molecules can hemoglobin carry
Definition
4
Term
what is the formula for total lung capacity
Definition
sum of the vital capacity and the residual volume
Term
define minute volume
Definition
the amount of gas inhaled or exhaled in 1 min
Term
what is the minute volume formula
Definition
tidal volume* resp rate
Term
what is the average minute volume
Definition
5 L/min (avg tidal volume 500cc times resp rate -10= average minute volume)
Term
define minute alveolar ventilation
Definition
the amount of gas available for alvolear exchange (tidal volume - dead space)* resp rate
Term
what is the percentage of nitrogen in air
Definition
79%
Term
what is the percentage of o2 in the air
Definition
21%
Term
this is defines as all the chemical changes that occur in the body
Definition
metabolism
Term
this term describes the passive process of oxygen and co2 exchange
Definition
diffusion
Term
according to diffusion, the molecules have a tendency to do this
Definition
move from a high concentration to a lower concentration
Term
The diffusion of gases through liquid is determined by
Definition
the pressure of gases- that is why its harder to breath in high altitude environment
Term
what is the respiratory membrane
Definition
its is the think layer of tissue that separates alveolar air from pulmonary capillaries
Term
define atelectasis
Definition
it is the destruction of functioning alveoli
Term
what are the two ways that oxygen is dissolved in blood
Definition
most of it is dissolved in red blood cells and the other is plasma
Term
what is oxyhemoglobin
Definition
red blood cells that are chemically bound to hemoglobin
Term
how many oxygen molecules can hemoglobin carry
Definition
4
Term
How is carbon dioxide transported in the blood (3 way)
Definition
plasma, blood proteins, and bicarbonate ions
Term
how is a majority of carbon dioxide transported through the blood
Definition
by bicarbonate ions
Term
The response of hemoglobin to changes in ph is called
Definition
the bohr effect
Term
What is the fick principle
Definition
it states that the amount of oxygen that the lungs deliver to the blood is directly related to the amount of oxygen consumed
Term
this term describes decreased oxygen at the tissue level
Definition
hypoxia
Term
this is a state of decreased oxygen content of the arterial blood
Definition
hypoxemia
Term
what part of the brain controlls the neurons for breathing
Definition
medulla
Term
what nerve controls the diaphram
Definition
the phrenic nerves, there are two of them
Term
what does it mean for the medulla to be bilateral
Definition
each side of the medulla is made up of different neurons that control inspiratory and expiratory centers
Term
what part of the medulla is inactive during quiet respiration
Definition
expiratory center (that's why exhalation is passive)
Term
what neuro mechanisms control the basic respiratory rhythm established by the inspiratory and expiratory centers
Definition
the vagal nerve and the pneumotaxic center
Term
what is the hering-breuer reflex
Definition
its another term for the vagal nerve
Term
what nerve limits inspiration and prevents overinflation of the lungs
Definition
the hering-breuer reflex (vagal nerve)
Term
what part of the brain can influence respiratory patters because of emotion
Definition
limbic system
Term
what part of the brain allows you to consciously alter your breathing pattern
Definition
cortex
Term
What are the different types of receptors that send information back to the brain that can alter the breathing pattern
Definition
chemoreceptors, baroreceptors and stretch receptors
Term
during quiet breathing, what receptors are responsible for rhythmic breathing
Definition
stretch receptors
Term
What part of the pons is constantly active during normal respiratory rates
Definition
apneustic center
Term
that rhythmically inhibits inspiration.
Definition
pneumotaxic center located in the pons
Term
this group of nerves overrides the apneustic center when the demand for increased ventilation arises
Definition
pneumotaxic center located in the pons
Term
where are chemoreceptors located
Definition
in medulla, carotid and aortic bodies
Term
concentrations of these ions are the major regulators of respiration
Definition
hydrogen and carbon dioxide
Term
what is the bodies normal Pco2 level
Definition
35-45 mm Hg
Term
does lowered barometric pressure affect the bodies ability to eliminate carbon dioxide
Definition
No it does not
Term
COPD patients have a hypoxic drive, what stimulates them to breath then
Definition
low arterial O2 levels
Term
These modified forms of respiration are thought to be protective mechanisms
Definition
cough and sneeze
Term
stimulation of this cranial nerve will cause you to sneeze i.e sunlight
Definition
Trigeminal nerve (V)
Term
This modified respiratory effort is though to be a protective reflex to hyperinflation the lungs and re expand alveoli
Definition
sigh
Term
this is a spasmodic contraction of the diaphram
Definition
hiccough
Term
This modified form of respiration is thought to serve no useful purpose
Definition
hiccough
Term
Is control of respiration a form of negative or positive feedback
Definition
negative
Term
as you become older, what happens to your lungs
Definition
vital capacity decreases and residual volume increases
Term
how soon does brain damage happen after cessation of circulation
Definition
4-6 min
Term
what is the most common source of FBAO
Definition
Meat
Term
what is the primary source of airway obstruction in a unconscious person
Definition
tongue
Term
what should you do if a FBAO patient has air exchange that is adequate
Definition
should not intervene
Term
define aphonia
Definition
inability to speak
Term
A laryngeal spasm is often caused by
Definition
aggressive intubation or extubation in a semi conscious individual
Term
What are s&s of a fractured larynx
Definition
pain on palpation, stridor, hoarseness, difficulty with speech or hemoptysis
Term
What is the most common site of tracheal trauma
Definition
the area between the cricoid cartilage and the third tracheal ring
Term
what are the most common food that children aspirate
Definition
hot dogs and peanuts
Term
How is the right bronchus different than the left bronchus
Definition
the right is shorter, wider, and more vertical
Term
Most aspirations end up in which bronchus
Definition
right
Term
These to chemicals break down food in the stomach
Definition
pepsin and hydrochloric acid
Term
where is hydrochloric acid made
Definition
in the gastric mucosa
Term
what is the name of the protein dissolving enzyme
Definition
pepsin
Term
what digestive enzyme does saliva contain
Definition
amylase
Term
what does amylase do and where is it?
Definition
it breads down carbohydrates, it is the digestive enzyme in saliva
Term
where in the brain is the vomiting center
Definition
medulla
Term
at what psi are o2 tanks considered empty
Definition
200 psi
Term
how much psi does it take to fill a o2 tank
Definition
2000-2200
Term
Define Eupnea
Definition
normal breathing
Term
define biot pattern
Definition
irregular respiration's varying in depth and interrupted by intervals o apnea
Term
define cheyne-stokes respiration
Definition
a regular, periodic pattern of breathing-with equal intervals of apnea followed by a crescendo-decrescendo sequence of respiration.
Term
Humidified oxygen is desirable for these types of respiratory inflammation processes
Definition
croup, epiglottitis or bronchiolitis
Term
When are nasal cannulas ineffective
Definition
when patients are primarily nose breathers or if the patient needs high flow o2
Term
What are the oxygen concentrations for a nasal cannula
Definition
24-44%
Term
What are the possible oxygen concentrations for a simple face mask and partial re breather mask
Definition
35-60%
Term
When are oxygen masks ineffective
Definition
patients who with apnea or poor respiratory effort
Term
What is the problem with a flow rate of less than 6 L/min on a simple face mask
Definition
Less than 6L/min will allow carbon dioxide in the mask to build up making it ineffective
Term
This type of o2 mask has a flutter valve assembly in the mask piece that stops the patients exhaled air from returning to the reservoir bag
Definition
NRB
Term
What are the concentrations of oxygen that the venturi mask delivers
Definition
24-50%
Term
What types of patients are venturi masks used for
Definition
patients with a hypoxic drive
Term
What is the % of oxygen exhaled by a person
Definition
17%
Term
When is it more appropriate to do a mouth to nose method versus a mouth to mouth method
Definition
Injuries to the mouth and lower jaw and patients with missing teeth or dentures
Term
How should a paramedic ventilate children, mouth to nose method or mouth to mouth method
Definition
Mouth to nose method is recommended
Term
what should you do if a stoma becomes clogged
Definition
suction with a sterile suction catheter, not inserting the catheter more than 7-12 cm
Term
In regards to a laryngectomy, this condition is considered life threatening
Definition
stenosis
Term
Why do patients with a laryngectomy more commonly develop mucus plugs
Definition
because they have a less effective cough
Term
when ventilating a stoma, you hear air leaking out of the mouth (partial neck breather), what should you do next?
Definition
close the patients mouth and nose, then try ventilating again
Term
How should you position a patient with a stoma to ventilate
Definition
us a pediatric sized pocket mask, patients head should be kept strait and the shoulders slightly elevated
Term
What is a partial neck breather and what should you do when trying to ventilate this type of patient
Definition
close the patients mouth and nose then try ventilation again
Term
what should the supplemental oxygen flow rate be to a pocket mask
Definition
10-12 L/min
Term
How do you properly allow for passive exhalation when using the mouth to mask ventilation technique
Definition
removing the mask from the patients face
Term
The AHA prefers how many rescuers to use the bag mask device
Definition
2
Term
Where do bag valve masks most commonly leak when being used on children
Definition
on the flat nasal bridge
Term
How many ventilation should be given to adults per min
Definition
10-12
Term
This type of suction catheter is narrow and flexible tube
Definition
whistle tip
Term
This type of suction catheter has two commonly used names, it is a rigid pharyngeal catheter
Definition
tonsile tip or yankauer
Term
What is the first step in suctioning a patient
Definition
check the equipment and set it to 80-120 mm Hg
Term
How long can you suction a adults airway
Definition
10-15 seconds
Term
How long can you suction an childs airway
Definition
no longer than 5 seconds
Term
How many mm Hg is needed for normal pharyngeal suctioning
Definition
80-120 mm Hg
Term
How long should you pre-oxygenate a patient before suctioning
Definition
2 min
Term
What are common problems with suctioning
Definition
hypoxemia, cardiac rhythm disturbances, airway stimulation may increase arterial pressure, soft tissue damage
Term
How long do you preoxygenate a patient before tracheobronchial suctioning
Definition
5 min
Term
What should be monitored when tracheobronchial suctioning
Definition
the cardiac monitor for cardiac dysrhythmias or bradycardia
Term
How does a paramedic manage gastric distention
Definition
patient is placed in left lateral recumbent position and pressure is slowly applied to the upper stomach or epigastric region, if that does not work placement of a gastric tube works
Term
How do you achieve gastric decompression for gastric distention or vomiting control
Definition
through a nasogastric or orogastric tube
Term
when do patients most commonly get gastric distention
Definition
being ventilated but not intubated for a long time
Term
How do you confirm NG tube placement
Definition
by injecting 30-50 ml of air wile auscultating or aspirate gastric contents
Term
How should you control a patients airway when the patient is unconscious or in patients who are responsive but not alert enough to control their own airway
Definition
Nasopharyngeal airway
Term
What does the french scale indicate about the diameter of a tube
Definition
the internal diameter
Term
A small internal diameter in french will have a large or small number
Definition
large number
Term
how do you measure a ng tube
Definition
measure from the nose to the ear, and from the ear to the xiphoid process
Term
how do you know if the NP airway is too long?
Definition
if a patient begins to gag indicating that it is stimulating the posterior pharynx.
Term
What should you do if the NP airway is too long
Definition
withdraw it .5 -1 cm
Term
Whats the problem with too long of a NP airway
Definition
stimulate a gag reflex, or it might enter the esophagus
Term
what is the problem with small diameter NP airways
Definition
they become easily obstructed
Term
What are the two different types of oropharyngeal airways
Definition
the guedel- tubular design
the berman- airway channels along the side
Term
What should you do before the insertion of a OP airway
Definition
clear the mouth and pharynx of all secretions
Term
how does tongue blade displace the tongue
Definition
inferiorly and anteriorly
Term
When talking about et tube diameter, what is measured
Definition
internal diameter
Term
What is the usual size of ET tube for men
Definition
7-8
Term
What is the usual et tube size for women
Definition
7
Term
At what age are cuffed et tubes recommended
Definition
8-10 years old
Term
When would you used a cuffed et tubes for kids below the age of 8
Definition
kids with status asthmaticus and ARDS
Term
What is the narrowest part of a kids airway
Definition
cricoid ring
Term
What is the formula for estimate of ET tube size (cuffed and uncuffed) for children older than 1
Definition
Uncuffed age/4 plus 4

cuffed is one size below uncuffed
Term
What is the most reliable method for selecting a correct ET tube size
Definition
length based resuscitation tape
Term
The electrical contact between the blade and the handle is made at a connection point called the
Definition
fitting
Term
What are different types of strait blades
Definition
Miller, Flagg blade, or the Wisconsin
Term
Where does the tip of the strait blade go to visualize the vocal chords
Definition
under the epiglottis to lift it out of the way
Term
What type of blade is recommended for infants
Definition
strait
Term
What is the hole at the end of the ET tube called
Definition
Murphys eye
Term
During intubation attempts, how should the patient be monitored
Definition
with ECG and Pulse OX
Term
Anatomically speaking, where is the location of the epiglottis
Definition
it is attached at the base of the tongue
Term
At what angle does the left bronchus branch off of the trachea
Definition
45-60 degree angle
Term
What is the anatomical place where the left and right mainstem bronchi separate
Definition
2nd intercostal space
Term
What is meant by the head being in the sniffing position
Definition
neck is flexed at the 5 or 6 vertebrae and the head is extended at the first or second vertebrae
Term
how far do you advance the ET tube after visualization of it going through the chords
Definition
1-2.5 cm
Term
In the average adult how far is the carina from the teeth
Definition
11 inches or 23 cm
Term
What is the average depth that a ET tube is inserted
Definition
19-23 cm
Term
What should you do if you intubated right mainstem bronchus
Definition
deflated the cuff and withdraw the tube 1 to 2 cm and then re inflate the cuff
Term
When should you confirm correct ET tube placement
Definition
each time the patient is moved
Term
What is a form of a primary confirmation method for a ET tube
Definition
auscultating over the lung fields,
Term
What is a form of secondary confirmation for et tube
Definition
end tidal carbon dioxide detectors, bulb syringe
Term
What is the narrowest part of the airway in a infant and young child
Definition
cricoid cartilage
Term
As the child becomes 10 y/o and older, what part of the airway becomes the narrowest part
Definition
vocal cords
Term
What are two formulas for estimating the depth of insertion
Definition
patients age/ 2 plus 12

et tube diameter times 3
Term
when are deciduous teeth developed and lost
Definition
they develop at 6 months and lost between 6-8 years
Term
What will the bulb do if the et tube is in the right place
Definition
it will easily re inflate itself
Term
when would you most likely see a shark fin appearance on the capnography
Definition
when the patient is having a bronchospasm
Term
What type of paralytic agents cause fasciculations
Definition
depolarizing agents- succinylcholine
Term
What is a mallampati score and what does it measure
Definition
it measures the difficulty of intubation- 1&2 are considered no difficulty, 4 is the most difficult
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