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81 Cards in this Set
- Front
- Back
how much pressure it takes to get a certain volume
ease of filling the lungs |
lung compliance
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volume/pressure
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lung compliance
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lungs have have a tendency to recoil ______, chest wall has a tendancy to move _______. (opposing forces)
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inward, outward
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breath delivery to patient is what kind of pressure?
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positive pressure
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exhalation of a breath from a patient is what kind of pressure?
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passive
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doesn't matter if the change in driving pressure is in the form of positive pressure (mechanical ventalation or??? what else
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negative pressure (normal breathing)
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if lungs are stiff compliance will? (increase/decrease)?
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decrease
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elastance is the opposite or reciprocal of?
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compliance
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how much volume you can get at a given pressure
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pressure/volume
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when the force (pressure) exceeds the elastic properties, the result is?
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rupture or break
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lungs with a high compliance have a (high or low) elastance?
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low
think underwear |
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lungs with a low compliance have a (high or low ) elastance?
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high
think underwear |
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pressure/flow
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airway resistance
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rate of flow through the airway is a function of the pressure gradient and the resistance to flow. narrowed airway,mucous plug,excessive secretions,etc)
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Raw or airway resistance
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low flow rates and low pressure gradients
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laminar flow
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increase airway resistance. High pressure gradient and high flow
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turbulent flow
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PEEP stands for?
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positive end expitory pressure
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Raw stands for ?
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airway resistance
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PIP stands for ?
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peak inspiratory pressure
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volume/plateau pressure-peep=
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Compliance static
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title volume=
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resting volume
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in the Raw formula pressure over flow, what makes up the pressure??
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PIP-plateau pressure
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volume/PIP-PEEP
aka V/P |
compliance dynamic
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PIP-Plateau/Flow
aka P/Flow |
Airway resistance calculation; Raw calculation
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Cstat+Raw=
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compliance dynamic
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Poiseuille's Law
as the pressure increase, the flow _______? increases or decreases |
increases
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Poiseuille's Law
as the length of the tube decreases, the flow ______? increases or decreases |
increases
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Poiseuille's Law
as the radius of the tube increases, the flow______? increases of decreases |
increases
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Poiseuille's Law
as the viscosity decreases, the flow______? increases or decreases |
increases
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law that deals with relationship beteween flow, radius, length of tube,viscosity and pressure
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Poiseuille's Law
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the size of the ______is directly related to gas flow and inversly related to the work of breathing?
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airway
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PaO2 stands for ?
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arterial oxygen partial pressure
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PAO2 stands for ?
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partial pressure of oxygen in the alveoli
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FIO2 stands for?
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fractional concentration of inspired O2
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oxygen form transport. 2 ways by blood. What are they?
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1 dissolves oxygen in the blood plasma.2 Chemically bound to the hemoglobin
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this shows the % of hemoglobin that is chemmically bound to oxygen at each oxygen pressure
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oxygen dissociation curve
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oxygen dissociation curve
80-100 mmHg normal 60-80 mmHg mild 40-60 mmHg moderate < 40 severe |
oxygen dissociation curve
80-100 mmHg normal 60-80 mmHg mild 40-60 mmHg moderate < 40 severe |
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PO2 of ___mmgh means HB is approximatly 90% saturated
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60
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3 things that affect level of 2,3-DPG?
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hypoxia,anemia and pH cnages
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a metabolic intermediary that is formed by the RBCs durning anaerobic glycolysis
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2,3-DPG
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______ enhances the release of O2 because it increases body temp
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exercise
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2 types of analyzers used to verify FIO2 that are electrochemical?(electrochemical,produce flow of electrons)
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Galvanic,Polarographic
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rate at which electrons flow thru a circuit per unit of time is called?
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current
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rate at which electrons flow thru a circuit per unit of time is called current and is expressed as?
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amperes
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voltage=driving pressure
rate of flow= |
current(amperes)
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driving pressure pushing electrons thru a conduting metal (element) or cirucuit is called?
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voltage
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flow of electrons between two areas of different electrical potential (or charge)
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electricity
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at regular intervals the current reversed it's direction
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AC or alternating current
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most equipment requires ___to operate? AC or DC
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DC
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electrons flowing thru the circit (toward the positive pole of a circuit)
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DC or direct current
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electricity seeks lowest level or lowesnt potential. It seek s the path of least resistance to it's flow.
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grounding
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3 prong plug was created to ensure that.....
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leakage occurance is harmlessly diverted
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currentXresistance=
ohms law |
voltage
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volts/resistance (ohms)=
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current
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constant resistance,increase voltage,____current amp
increase or decrease |
increase
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increase or decrease
____resistance,constant voltage,decreased current |
increase
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increase or decrease
decrease resistance,___voltage,constant current amp |
decrease
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transmits 2 wavelengths of light through arterialized capillary beds
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pulse oximeter
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transmits 4 wavelengths of light and can detect the amt of methemoglobin, carboxy Hb,deoxy Hb and oxy Hb
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co-oximeter
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functional saturation it only looks at Hb in Capable of binding with O2.
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pulse oximeter
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compares the amt of Hb that is capable of being saturated
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pulse oximeter
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fractional saturation. It compares the amt of Hb that is saturated with the total Hb present
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co-oximeters
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SaO2 stands for??
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Hb saturation
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SpO2 stands for?
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Spot Oxygen saturation
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patient below __% needs blood gas done, pulse ox won't work and reading wond be accurate
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75
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distending pressure of a liquid sphere is directly proportional to the surface tension
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laplaces law
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distending pressure of a liquid shere is indirectly proportional to radius
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laplaces law
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pressure/volume=elastance
which law |
laplaces law
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an effective small vol. nebulizer should deliver ___% of its toal dose of medication as an aerosol
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580
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compares the amt of Hb that is saturated with the total amount of Hb present
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co-oximeter
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present of surfactant in the alveoli ____compliance.
increases or decreases |
increases
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the distal regions of the lungs when gas flow stops
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brownian movement
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illustrates relatonship between % Hb sat and PO2
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O2 Dissocciation curve
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____can tie up large amounts of Hb
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carbon minoxide
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occurs when aerosol particles settle out of suspension because of gravity
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gravitational sedimentation
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4 types of aerosol generators
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jet nebs,ultrasonic nebs, metered dos inhaler with spacer,dry powder inhaler
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difference between two points in a tube
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driving pressure
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barometic pressure difference between the mouth pressure and the alveolar pressure
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transairway pressure
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difference between the alveolar pressure and the pleural presure
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transpulmonary pressure
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recipricol of elastance
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compliance
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change in pressure divided by the change in volume=elastance
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hookes law
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