Airway Management Flashcards
agonal respirations
slow shallow irregular respirations resulting from anoxic brain injury
air trapping
a respiratory pattern associated with an obstruction in the pulmonary tree, the breathing rate increases to overcome resistance in getting air out the respiratory effort becomes more shallow, the volume of trapped air increases, and the lungs inflate
alveolar air volume
in contrast to dead air space, alveolar volume is the amount of air that does reach the alveoli for gas exchange (approx 350 ml in the adult male). it is the difference between tidal volue and dead space volume
angle of louis
an angulation of the sternum that indicates the point where the second rib joins the sternum, also called the masubriosternal junction
anoxia
a total lack of oxygen availability to the tissues
apnea
respiratory arrest
atelectasis
an abnormal condition characterized by the collapse of alveoli, preventing the respiratory exchange of carbon dioxide and oxygen in a part of the lungs
barrier device
a thin film of material placed on the patients face used to prevent direct contact with the patients mouth during positive pressure ventilation
bilevel positive aitway pressure (BiPAP)
the delivery of two levels of positive pressure ventilation, one during inspiration to keep the airway open as the patient inhales, and the other (lower) pressure during expiration to reduce the work of exhalation
biot respirations
irregular respirations varying in rate and depth and interrupted by periods of apnea; associated with increased intracranial pressure, brain damage at the level of the medulla, and respiratory compromise from drug poisoning
bradypnea
a respiratory rate that i persistently slower than normal for age; in adults a rate slower than 12 breaths/min
capnograph
a device that provides a numerical reading of exhaled CO2 concentrations and a waveform (tracing)
capnography
continuous analysis and recording of CO2 concentrations in respiratory gases
capnometer
a device used to measure the concentration of CO2 at the end of exhalation
capnometry
a numeric reading of exhaled CO2 concentrations without a continuous written record or waveform
carina
the point where the trachea divides into the right and left mainstem bronchi
central neurogenic hyperventilation
similar to kussmaul respirations characterized as deep rapid breathing associated with increased intracranial pressure
cheyne stokes respirations
a pattern of gradually increasing rate and dept of breathing that tapers to slower and shallower breathing with a period of apnea before the cycle repeats itself; often described as a crescendo decrescendo pattern or periodic breathing
chronic obstructive pulmonary disease (COPD)
a progressive and irreversible condition characterized by diminished inspiratory and expiratory capacity of the lungs
compliance
the resistance of the patients lung tissue to ventilation
continuous positive airway pressure (CPAP(
the delivery of slight positive pressure throughout the respiratory cycle to prevent airway collapse reduce the work of breathing and improve alveolar ventilation
costal angle
the angle formed by the margins of the robs at the sternum
coughing
a protective mechanism usually induced by mucosal irritation; the forceful, spastic expiration experienced during coughing aied in the clearance of the bronchi and bronchioles
crackles (rales)
as teh name implies, when fluid accumulates in the smaller airway passages, air passing through the fluid creates a moist crackling or popping sound heard on inspiration
crepitation
a crackling sound indicative of bone ends grinding together
cricothyroid membrane
a fibrous membrane located between the cricoid and thyroid cartilages
cricothyrotomy
an emergency procedure preformed to allow rapid entrance to the airway for temporary oxygenation and ventilation
dead air space
not all the air inspired during a breath participates in gas exchange and can be further classified as anatomic or physiologic dead space. In the average adult male, this equates to approx 150 ml. Anatomic dead space includes airway passages such as the trachea and bronch, which are incapable of participation in gas exchange. Alveoli that have the potential to participate in gas exchange but do not because of disease or obstruction, as in COPD or atelectasis, are referred to as physiologic dead space
dyspnea
an uncomfortable awareness of ones breathing that may be associated with a change in the breathing rate, effort, or pattern
endotracheal (ET)
within or through the trachea
endotracheal intubation
an advanced airway procedure in which a tube is placed directly into the trachea
exhaled CO2 detector
a capnometer that provides a noninvasive estimate of alveolar ventilation, the concentration of exhaled CO2 from the lungs, and arterial carbon dioxide content; also called an endtidal CO2 detector
expiratory reserve volume
amount of gas that can be forcefully expired at the end of a normal expiration
external respiration
the exchange of gases between the alveoli of the lungs and the blood cells traveling through the pulmonary capillaries
extubation
removal of an ET tube from the trachea