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Ch.19
Airway Management and Ventilation
67
Medical
Undergraduate 1
04/15/2008

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Term
atelectasis VOC
Definition
an abnormal condition characterized by the colapse of lung tissue; it prevents the respiratory exchange of oxygen and carbon dioxide
Term
anatomical dead space VOC
Definition
the volume of the conducting airways from the external enviroment down to the terminal bronchioles
Term
compliance VOC
Definition
the ease with which the lungs and thorax expand during pressure changes. The greater the compliance, the easier the expansion
Term
Fick principle VOC
Definition
the principle used to determine cardiac output. It assumes that the amount of owygen delivered to an organ is equal to the amount of oxygen consumed by that organ plus the amount of oxygen carried away from that organ
Term
gag reflex VOC
Definition
A normal neural response triggered by touching the soft palate or posterior pharynx
Term
hypocarbia VOC
Definition
a state of diminished carbon dioxide in the blood; also known as hypocapnia
Term
hypoxemia VOC
Definition
a state of decreased owygen content of arterial blood
Term
hypoxia VOC
Definition
a state of decreased oxygen content at the tissue level
Term
intrapulmonic pressure VOC
Definition
the pressure of the gas in the alveoli
Term
intrathoracic pressure VOC
Definition
the pressure in the pleural space; also known as intrapleural pressure
Term
minute volume VOC
Definition
the amount of gas inhaled or exhaled in 1 min. It is found by multiplying the tidal volume by the respiratory rate
Term
physiological dead space VOC
Definition
the sum of the anatomical dead space plus the volume of any nonfunctioal alveoli
Term
pulmonary ventilation VOC
Definition
the movement of air into and out of the lungs. This process brings oxygen into the lungs and removes carbon dioxide.
Term
respiration VOC
Definition
the exchange of oxygen and carbon dioxide between an organism and the enviroment
Term
tidal volume VOC
Definition
the volume of air inspired or expired in a single, resting breath.
Term
external respiration p.431
Definition
the transfer of oxygen and carbon dioxide between the inspired air and pulmonary capillaries
Term
internal respiration p.431
Definition
the transfer of oxygen and carbon dioxide between the capillary red blood cells and the tissue cells
Term
Gas flows from a _____pressue or concentration to an area of _______pressure or concentration p.431
Definition
higher to lower
Term
atmospheric pressure-definition and how many mm Hg at sea level p.432
Definition
is the pressure of the gas around us. 760mm Hg
Term
What is the measurement of intrapulmonic pressure in mm Hg p.432
Definition
varies a little above or below 760mm Hg- depends if measured during inspiration or expiration
Term
What is the measurement of Intrathoracic pressure in mm Hg p.432
Definition
less than atmospheric pressure usually 751-754 mm Hg.but may exceed the atmospheric pressure during coughing or staining during bowel movements
Term
As the thorax expands the lung space increases.. This causes a drop in the ________pressure of about 1mm Hg below ________pressure "inspiration"p.432
Definition
intrapulmonic pressure and atmospheric pressure.
Term
As the chest wall relaxes during expiration, elastic coils causes the thorax and lung space to decrease in size increasing the _________pressure by 1mm Hg over the _________ pressure "expiration" p.432
Definition
intrapulmonic pressure and atmospheric pressure
Term
The expansion of the lungs and thorax is caused by the movement of the________ and the __________and__________intercostal muscles p.432
Definition
diaphragm, internal and external intercoastal muscles
Term
Diseases that decrease compliance increase the energy required for breathing.Give examples of such diseases. p.433
Definition
asthma, emphysema, bronchitis, and pulmonary edema
Term
Factors that increase the amount of energy needed for ventilation include loss of ________, an increase in airway resistance, or a decrease in ___________. p.433
Definition
pulmonary surfactant and pulmonary compliance
Term
The nasal passages cause about __% of the total airway resistance during nose breathing. The mouth, pharynx, larynx, and trachea account for approximately __% to__% of airway resistance during quite mouth bring. This may increase to __% duing times of increased ventilation p.435
Definition
50%, 20% and 30%, 50%
Term
The ________muscles include the scalenes and the sternocleidomastoid(deep muscles of the neck and thorax), posterior neck and back muscles, and the abdominal muscles. "labored breathing" p.435
Definition
accessory muscles
Term
The average adult breathes about __to__ times per min. what is the percentage of inspired air that never reaches the alveoli for gas exchange but fills the upper respiratory tract and lower nonrespiratory bronchioles p.435
Definition
12 to 24 . one fifth
Term
emphysema causes the alveolar walls to ________. p.435
Definition
degenerate
Term
The lungs can hold about _____ times the amount of airbrought in by a normal resting inhalation.p.435
Definition
8
Term
The tidal volume of the average adult is about_______________mL. Of this _____mL remains in the anatomical dead space until it is exhaled during the next respiratory cycle.p.435
Definition
500-600mL and 150mL
Term
The ______________is the amount of gas that can be forcefully inhaled after inspiration of the normal tidal volume. This amount is usually ________mL. p.435
Definition
inspiratory reserve volume and 2000 to 3000mL
Term
The ______________is the amount of gas that can be forcefully exhaled after expiration of the normal tidal volume.The volume is approximately? ______mL p.435
Definition
expiratory reserve volume and about 1200mL
Term
The ______________ is the gas that remains in the respiratory system after forced expiration. Normal volume is?__________mL p.435
Definition
residual volume and 1000 to 1200ml
Term
The _______capacity is the tidal volume plus the inspiratory reserve. This capacity relects the amount of gas a person can inspire maximally after a normal expiration about _______mL. p.435
Definition
inspiratory capacity and about 3500 mL
Term
The __________________capacity is the expiratory reserve volume plus the residual volume.This capcity reflects the amount of gas remaining in the lungs at the lungs at the end of a normal expiration. Its about______mL p.435
Definition
Functional residual capacity and 2300mL
Term
The _________capacity is the volume of gas that can move on deepest innspiration and expiration or the sum of the inspiratory reserve volume, tidal volume and expiratory reserve volume. The capacity is about _________mL. p.435
Definition
Vital capacity and 4600mL
Term
The total lung capacity is the sum of the ______capacity and the _______volume which is about ______mL
Definition
vital capacity, residual volume and 5800mL
Term
How do you find a pt minute volume mathmatically?
Definition
muliply the tidal volume by the repiratory rate.
Term
The amount of inspired gas available for gas exchange during 1 min is refferred to as the ________ventilation p.437
Definition
minute alveolar ventilation
Term
How do you calculate the minute alveolar ventilation. p.437
Definition
subtract the amount of dead space from the tidal volume and then multiply the repiratory rate
Term
The mixture of gases that make up the atmosphere exerts a combined partial pressure. This pressure is measure in ________or ________
Definition
millimeters of mercury or torr.
Term
Concentration of the Atmospheric gas Nitrogen,oxygen, carbon dioxide, water?
Definition
597 Torr(78.62%), 159 Torr(20.84%), 0.3 torr(0.5%), and 3.7 Torr(6.2%
Term
Concentration of Aveolar gases. Nitrogen, Oxygen, Carbon dioxide, and water.
Definition
569 torr(74.9%), 104 torr(13.7%), 40 torr(5.2), and 47 torr(6.2%)
Term
_________is the chemical changes that occur in the body. p.439
Definition
metabolism
Term
_________is the tendency for molecules in solution to move from an area of higher concentration to an area of lower concentration. p.439
Definition
deffusion
Term
The partial pressure of the free gas (Po2) in the ______is greater than the (po2) of the dissolved oxygen in the ________. p.440
Definition
Lungs and blood stream
Term
Oxygen moves into the blood and carbon dioxide into the ________. p.441
Definition
alveoli
Term
Oxygen is present in the blood in two forms. It is physically ___________in the blood . It also is chemically bound to _____________molecules. p.442
Definition
dissolved and hemoglobin(Hb) molecules
Term
Oxygen is present in the blood in two forms. It is physically ___________in the blood . It also is chemically bound to _____________molecules. p.442
Definition
dissolved and hemoglobin(Hb) molecules
Term
Tests that can be used in the field to monitor the oxygen content of blood and gas exchange.
Definition
pulse oximetry monitoring, peak expiratory flow testing, end tidal carbon dioxide monitoring, and esophageal detection device.
Term
Carbon dioxide is transported in the blood in three major forms. p.442
Definition
plasma, blood proteins, and bicarnonate ions
Term
Depressed Respiratory Drive that affect blood oxygenation p.445
Definition
head injury and CNS depressent
Term
paralysis of respiratory muscles that affect blood oxygenation p.445
Definition
spinal injury , inhalation injury, neuromuscular diseases
Term
increased resistance in the respiratory airways that affect blood oxygenation p.445
Definition
asthma, bronchitis, emphysema, congestion
Term
decreased compliance of the lungs and thoracic wall that affect blood oxygenation p.445
Definition
interstitial lung disease as a result of inhalation of toxic substances, infection(pneumonia, tuberculosis), lung cancer, connective tissue diseases, chronic pulmonary hypertension
Term
chest wall abnormalitites that affect blood oxygenation p.445
Definition
chest wall injury(flail chest), scoliosis, eschar(full thickness burn contractions)
Term
decreased suface area for gas exchange that affect blood oxygenation p.445
Definition
emphysema, tuberculosis, pneumonia, pulmonary edema, atelectasis
Term
increased thickness of the respiratory membrane that affect blood oxygenation p.445
Definition
pulmonary edema(caused by heart failure, pneumonia, infections), interstitial fibrosis
Term
ventilation and perfusion mismatching that affect blood oxygenation p.445
Definition
asthma, pneumonia, pulmonary embolus, pulmonary edema, myocardial infarction, respiratory distress syndrome, shock
Term
reduced capacity of the blood to transport oxygen that affect blood oxygenation p.445
Definition
anemias, hemoglobin, alterations, carbon monoxide poisoning, methemoglobinemia
Term
Oxygen free hemoglobin binds more readily to _________than hemoglobin binds with __________.p.443
Definition
carbon dioxide and oxygen
Term
______________ can lead to a decrease in the blood Pco2, vasodilation of the peripheral blood vessels, a decrease in blood pressure, or a combination of these effects p.443
Definition
Hyperventilation
Term
The inspiratory muscles are the _____________ and ________ muscles.
Definition
diaphagm and intercoastal muscles
Term
two distanct neural mechanisms are responsible for the basic respiratory rhythm established by the inspiratory and expiratory centers_____________and _________p.445
Definition
the vagal reflex(Hering Breuer reflex) and the pneumotixic center.
Term
hering breuer reflex limits ___________.It also prevents overinflation of the lungs.
Definition
inspiration
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