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104 Cards in this Set

  • Front
  • Back
The lungs, in conjunction with the circulatory system, deliver ______ to and expel _____ ______ from the cells of the body.
oxygen; carbon dioxide
The upper respiratory system...
warms and filters air.
The lungs accomplish _____ ______
gas exchange
What are the structures of the upper respiratory system? 487-488
Nose
Sinuses and nasal passages
Pharynx
Tonsils and adenoids
Larynx: epiglottis, glottis, vocal cords, and cartilages
Trachea
The purpose of the cilia is ?
move the mucus back to the larynx.
Paranasal sinuses? and purpose?
frontal, ethmoid, sphenoid, maxillary
Purpose a resonating chamber in speech.
Lower respiratory structures?
Lungs
Pleura
Mediastinum
Lobes of the lungs:
Left: upper and lower
Right: upper, middle, and lower
Bronchi and bronchioles
Alveoli
When does inspiration occur? Expiration occurs?
I= during the first two/thirds of the respiratory cycle.
E= during the last two thirds.
Inspiratory phase requires ____ but expiratory requires very little
energy.
Exception: In COPD expiration requires _______
energy.
Alveoli
where gas exchange takes place.
How many alveoli are there?
300 million in clusters of 15 to 20.
What are the three types of alveoli?
Type 1- epithelial cells that form the alveolar walls.
Type 2- excrete surfactant (a phospholipid that prevents collapse)
Type 3- large phagocytic cells that ingest foreign matter and act as a defense mechanism.
Thoracic cavity is an ____ chamber. The base of this chamber is the ____.
airtight; diaphragm
Inspiration
contraction of the diaphragm and external costal muscles increases the space in the chamber.
Expiration
with relaxation, the diaphragm moves up and intrathoracic pressure increases. This increased pressure pushes air out of the lungs. Expiration requires the elastic recoil of the lungs.
Function of the respiratory system.
oxygen transport, respiration, ventilation and gas exchange.
Respiration
The process of gas exchange between atmospheric air and the blood at the alveoli, and between the blood cells and the cells of the body.
Why does exchange of gas occur?
Exchange of gases occurs because of differences in partial pressures.
Oxygen diffuses from the ____ into the ____ at the alveoli to be removed form the body.
air into blood
Carbon dioxide diffuses from the ____ into the ____ at the alveoli to be removed form the body.
blood into air
What is ventilation?
Ventilation is the movement of air in and out of the lungs.
Air must reach the _____ to be available for gas exchange.
alveoli
What is (pulmonary) perfusion?
Perfusion is the filling of the pulmonary capillaries with blood.
Adequate gas exchange depends upon what?
Adequate gas exchange depends upon an adequate V/Q ratio, a match of ventilation and perfusion.
When does shunting occur?
Shunting occurs when there is an imbalance of ventilation and perfusion. This results in hypoxia (oxygen deprivation).
What is gas exchange between the lungs and blood and between the blood and tissues?
Respiration.
Normal breath sounds
Vesicular
Bronchovesicular
Bronchial
Abnormal breath sounds
Crackles
Wheezes
Friction rubs
tidal volume
air volume of each breathe (in and ex) during normal breathing.
inspiratory reserve volume
maximum volume that can be inhaled after a normal inhalation.
expiratory reserve volume
maximum volume that can be inhaled after a normal exhalation
vital capacity
the maximum volume of air exhaled from a maximal inspiration, VC = TV + IRV + ERV.
forced expiratory volume
volume exhaled forcefully over time in seconds. Time is indicated as a subscript, usually 1 second.
a spirometer measures
volumes of air exhaled and is used to assess lung capacities.
When assessing TV, measure ____ breaths. TV varies from breath to breath.
several
Peak flow rate reflects ___ ___ ____ and is frequently done by patients using a home spirometer.
maximal expiratory flow
Inspiratory force measures
the effort of the patient in making an inspiration.
Monometer measures and occludes what?
A monometer which measures inspiratory effort can be attached to a mask or endotracheal tube to occlude the airway and measure pressure.
Normal inspiratory pressure is approximately ______
100 cm H2O.
Inspiratory Force of less than ____ usually requires mechanical ventilation.
25 cm
ABG
Measurement of arterial oxygenation and carbon dioxide levels.
Used to assess the adequacy of alveolar ventilation and the ability of the lungs to provide oxygen and remove carbon dioxide.
Also assesses acid base balance
Pulse Ox
oxygen saturation in the blood.
Pulse Ox does not replace ______
abg and may be unreliable
bronchoscopy
direct examination or larynx, trachea, and bronchi. Fiberoptic ("bendy" tube )and rigid (straight tube) bronchoscopy
bronchophony
abnormal increase in clarity of transmitted voice sounds.
compliance also known as
dispensability... is the elasticity and expandability of the lungs and thoracic structures

measure of force required to expand or inflate the lungs.
Diffusion is the...
process by which oxygen and carbon dioxide are exchanged at the air-blood interface. high to low
Pulmonary perfusion
actual blood flow through the pulmonary circulation.
the pulmonary circulation is considered _____ pressure because...

It can vary its ______
systolic is 20-30 and dia is 5 to 15.

circulation
Adequate gas exchange depends on
adequate V/Q
V/Q ratio
ventilation-perfusion ratio
ventilation-perfusion ratio imbalances because of
inadequate ventilation, perfusion or both
The air we breathe is a mixture of
nitrogen (78.6%) oxygen (20.8%) ...with traces of carbon dioxide (0.04) and water vapor (0.05), helium and argon
Atmospheric air pressure at sea level is 760mm
true
Partial pressure is pressure...
exerted by each type of gas in a mixture of gases.
Partial pressure is ________ to the concentration of that gas.
proportional
the total pressure is equal to
the sum of partial pressures. no matter if its atmospheric or in the lungs.
When a gas is exposed to a liquid, the gas _______ until an _____ is reach
dissolves; equilibrium
oxygen and carbon dioxide are transported simultaneously either _____ in blood or combined with hemoglobin in red blood cells.
dissolved
The Oxhemoglobin Dissociation Curve shows the relationship between
partial pressure of oxygen and the percentage of saturation of oxygen.
At the same time oxygen diffuses from the ___ to the ______, carbon dioxide diffuses from _____ to the to blood and transported to the lungs for excretion.
oxygen- blood into tissue
carbon dioxide- tissue into blood
____ ______ is the result of cyclic excitation of the respiratory muscles by the phrenix nerve
resting respiration
lungs and respiratory peak is between
20 and 25 and decreases afterwards.
Clubbing of the fingers is a sign of...
lung disease
Cyanosis
is a VERY LATE indication of hypoxia. It appears when there is at least 5g/dL of unoxygenated hemoglobin.
4 reasons the chest may not have a 1:2 ratio
barrel chest- over inflation of the lungs
funnel chest- p. excavatum
Pigeon chest- p. carinatum
kyphoscoliosis
eupnea
apnea

cheyne-stokes

biot's respiration
normal breathing 12-18
period of cessation of breathing

regular cycle where rate and depth of breathing increase then decrease until apnea occurs.

periods of normal breathing followed by varying apneas
Bronchophony and egophony are indicative of
consolidation ie pneumonia or pleural effusion
vesicular
bv and tracheal
bronchial
I>E, soft, low
I=E intermediate (Bv)
I<E loud,
tracheal, very loud
crackles
soft, high pitched popping sounds during inspiration
course crackles- early inspiration
fine crackles- late inspiration
wheezes
musical sounds can be heard on inspiration but usually expiration
rhonchi
friction rub
low pitched wheezing rumbling sounds
leather rubbing together, crackling
How is vital capacity measured?
by having the pt take in max breath and exhale fully through a spirometer.
Throracoscopy (endoscopic)
evaulation of pleural effusions, pleural disease and tumors.
Thoracentesis
aspiration of fluid or air from the pleural space.
Examples of upper respiratory diseases
Infections
Rhinitis
Sinusitis: acute, chronic
Pharyngitis: acute, chronic
Tonsillitis, adenoiditis
Peritonisillar abscess (aka quinsy)
Laryngitis
rhinitis
inflammation of the mucous membranes of the nose.
rhinosinusitus
inflammation of the nares and paranasal sinuses, including frontal, ethmoid, maxillary,a nd sphenoid sinuses. thick mucous occludes sinsus cavity; prevents drainage
pharyngitis
inflammation of the throat; usually viral or bacterial in origin.
potential complications of upper respiratory
sepsis- bacterial infection
meningitis- brain and spinal cord inflammation
peri tonsuilar abscess
otitis media- middle ear infection
sinusitis
S/S of upper respiratory
hoarness, chest pain etc
palpate _______ ______ _____ when assessing for an upper respiratory tract infection.
neck lymph nodes
use ___ for sore throat.
gargles
epistaxis, most common site
bleeding from the nose; anterior septum
how to treat epistaxis
direct pressure 5-10 min with head titled forward.
nasal decongestants
topical vasoconstrictors ie (cocaine etc.)
packing to control bleeding from posterior nose
catheter, packing, strip

can use a ballon catheter
If bleeding doesn't stop in 15 min. seek medical attentino.
true
reasons nasal airways may be obstructed
deviation of nasal septum, hypertrophy of turbinate bones, pressure of nasal polyps.
larynx (voice box) obstruction is usually due to ______
edema.
______ is characterized by episodes of life threatening laryngeal edema
Hereditary angioedema (HAE)
Categories of cancer of larynx
Supraglottic: false vocal cords above vocal cords
Glottic: true vocal cords
Subglottic: below vocal cords
S/S of cancer of the larynx
hoarse, cough, sore throat, lump in neck
affected voice sounds
Medical treatment of larynx cancer
radiation, chemo, surgery (Partial laryngectomy
Supraglottic laryngectomy
Hemilaryngectomy
Total laryngectomy)
laryngitis
inflammation of the larynx as a result of dust, chemicals, smoke, and other pollutants or as part of a URI.
aphonia
complete loss of voice, a sign of laryngitis. also severe cough.
how to manage laryngitis
rest voice, avoid irritants, and inhale cool steam or aerosol.
signs of peritonsilar abscess
trismus (unable to open mouth), sore throat, drooling
vocal cord stripping
used to treat dysplasia, hyperkeratosis (thickening if the stratum corneum), and leukoplakia.
cordectomy
exicision of the vocal cord, performed via transoral laser
when is an electric larynx used?
When esophageal speech is not successful or until the patient maters the technique.
how to maintain a patent airway.
fowler's or semi fowlers position to decrease edema
Keep HOB elevated during, after tube feedings
Check gastric residual when administering tube feedings
When patient begins oral feeding, maintain upright bed position during, after feedings
Swallowing maneuvers to prevent aspiration
Use of thickened liquids