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Lung Mechanics

Fundamentals

QuestionAnswer
List the device and describe the technique that you would use to measure Peak expiratory flow rate, inspiratory capacity, slow vital capacity and negative inspiratory force.
Given a tidal volume and resp rate calc the minute volume
A healthy adult should have a peak expiratory flow rate in excess of
What would you predict for a vital capacity on a normal healthy person with no history of lung disease if VC=65-75 ml/IBW
What would you predict for a negative inspiratory force (NIF) or negative inspiratory pressure (NIP) in a person with no history of lung disease?
Describe the indications for a peak flow measurments
Describe the zones used in PEFR measurements discussed in class
Medical vacuum system Series of vacuum pumps, an air receiver, etc. where a neg.pressure is created so that suction maybe used in surgical or patient rooms
List 3 methods of o2 production Chemical method, fractional distillation, physical separation
Identify the most common method of commercial O2 production Fractional distillation
Identify reasons for an adjustable oxygen regulator Used to control both pressure and flow
Liquid gas cylinder Gauge press. Is a measure of only the vapor press. Of gas in equilibrium w/liquid phase
Flow restrictors when exposed to a downstream resistance to flow? Can not change flow, cannot be set to incorrect
Liquid o2 resp. System Most cost efficient and convenient means of supplying oxygen to patients in hospital setting and those that would require continuous home o2
Gas filled cylinder Directly proportional to the gas press. Ex. Press decrease 50% indicates a loss of 50% of the contained gas
True concerning O2 concentrators As flow rates increase delivered concentrations decrease
Which flow metering devices will indicate a flow higher than actual when exposed to a downstream resistance to flow Bourdon gauge , flow restricted
Created by: 1197414121