Lab 6 Pulmonary Function Flashcards
What is the name of the device used that’ll measure breathing
A-FH-300L Spirometer flowhead and plastic tubes
How to setup the spirometer
- Push the 2 air flow tubes onto the 2 outlets on the A-FH-300L Spirometer
- Connect other ends of the air flow tubes into Channel A1 of IXTA. Connect red port to red connector on tubing
What must be done before starting ex 1 what should u do
- Subject must be healthy and no history of respiratory or CV problems
- Outlets connected to the airflow tubing should be pointed up to avoid condensation developing
- Use nose-clip to prevent air from entering/leaving nose as subject breathes. Air that passes thru nose cause errors in lung volume values
- Calibrate spirometer on “Lung Volumes” channel
- Allow IXTA warm up 10 mins before recording 1st time
When spirometry data recorded, inhalation and exhalation are displayed how
- inhalation displayed as upward deflection
2. exhalation displayed as downward deflection
How to determine if subject breathing in correct end of flow tube
- Click on preview mode and record
- Have subject inhale
- If flowhead oriented properly, traces on Air Flow and Lung Volume channels go up during inhalation
- If traces on channels go down, breathe in other end of flowhead or reverse airflow tubes position at outlets of flow head
What is exercise 1
Breathing while resting
What is the aim of ex 1 breathing while resting
To measure BREATHING PARAMETERS in healthy, RESTING subject
Time for ex 1 breathing while resting
20 mins
Procedure for ex 1 breathing while resting
- Subject SIT quietly, become accustomed to breathing thru spinometer flow head, breathe normally. Hold flow head so outlets pointed up. Remove flow head from mouth and hold at mouth level in position that prevents breath from moving thru flow head.
- Click record. Wait 10 secs for Lung Volumes channel to zero, then subject breathe in flow head with mouth.
- Record 5-6 breaths, takes ~45 secs.
- Subject inhale as deeply as possible. When reach max inhalation volume, exhale quickly and completely.
- Then breathe normally for 5-6 breaths
Set up for ex 2?
- Connect ends of air flow tubes into Channel A1 like in exp 1
- Connect DIN8 connector of PT-104 plethysmograph into Channel 5
- Place plethysmograph on volar surface of distal segment of middle finger/thumb
What must be done before starting ex 2 what should u do
- Subject must be healthy and no history of respiratory or CV problems
- Outlets connected to the airflow tubing should be pointed up to avoid condensation developing
- Use nose-clip to prevent air from entering/leaving nose as subject breathes. Air that passes thru nose cause errors in lung volume values
- Calibrate spirometer on “Lung Volumes” channel
- Allow IXTA warm up 10 mins before recording 1st time
What is ex 2 called
HR while breathing at rest
Aim of ex 2 HR while breathing at rest
To determine EFFECT of BREATHING WHILE AT REST on subject’s HR and change in HR during RESPIRATORY SINUS ARRHYTHMIA (RSA)
Time for ex 2 HR while breathing at rest
30 mins
Procedure for ex 2 HR while breathing at rest
- Subject SIT quietly, become accustomed to breathing thru spinometer flow head, breathe normally. Hold flow head so outlets pointed up. Remove flow head from mouth and hold at mouth level in position that prevents breath from moving thru flow head.
- Click record. Wait 10 secs for Lung Volumes channel to zero, then subject breathe in flow head with mouth.
- Record 5 breaths, takes ~45 secs.
- Subject inhale as deeply as possible. When reach max inhalation volume, exhale quickly and completely.
- Then breathe normally for 5-6 breaths
Why may there by sections of data on the Lung Volumes channel where baseline is sloped
Sloping occurs when temp inside spirometer inc while subject breathes thru unit
What is the purpose of using the SpiroLab II Spirometry System when we’ve just used IWRX
Measure many of the same variables measured previously with iWorx flowhead. Allows u to compare and contrast 2 diff sets of equipment, methods, and results
What 6 things does the SpiroLab II Spirometry measyre
- Vital capacity (VC)
- Forced vital capacity (FVC)
- Forced expiratory volume in 1 sec (FEV1)
- FEV1.0/FVC percent
- Maximal midexpiratory flow rate (MMFR), called FEF25-75% by the computer. Stands for forced expiratory flow rate from 25 to 75% of forced vital capacity curve.
- Peak expiratory flow rate (PEF): maximal flow rate obtained during FEFV1 maneuver
Fxn and accuracy of SpiroLabII Spirometry System
- A computerized system for performing pulmonary fxn measurements.
- Accuracy for volume measurements: +/- 3%
- Accuracy for flow rate measurements: +/- 5%
- Small error in calculation of BTPS cause barometric pressure at SFU varies btwn 715-745 mmHg, and machine assumes barometric pressure of 760 mmHg
What is ex 3 called
Performing the pulmonary fxn measurements
Procedure for Ex 3
- Subject perform forced vital capacity test (FVC) three times.
- Only expire into automated spirometer, do not inspire
What is ex 4 called
Calibrate the iWire GA Gas Analyzer
Procedure for ex 4 calibrate the iWire GA Gas Analyzer
- Warm up gas analyzer 15 mins before using. Make sure calibration gas tank near gas analyzer
- Connect gas sample tubing to connector on the output of the regulator
- Click on Calibrate Gas Analyzer
- Click on Perform Quick Software Gas Calibration
- Follow directions. Room air will be sampled for 10 secs. Calibration gas will be sampled for 15 secs.
- If necessary, move cursors in correct position
What is Ex 5 called
Breath-Holding Exp
What is the procedure for ex 5 Breathing-holding Exp
- Calibrate iWire-GA Gas Analyzer
- Treatment #1: at end of normal breath, exhale continuously to collect alveolar gas sample. Record FAO2, FACO2
REST 2 MINS TO ALLOW ALVEOLAR GASES TO RETURN TO NORMAL LVLS
- Treatment #2: hold breath for as long as possible from the end of normal inspiration. collect alveolar gas sample. Record FAO2, FACO2, and breath hold-time.
REST 2 MINS TO ALLOW ALVEOLAR GASES TO RETURN TO NORMAL LVLS
- Treatment #3: take deep inspiration and hold for as long as possible. collect alveolar gas sample. Record FAO2, FACO2, and breath hold-time
REST 2 MINS TO ALLOW ALVEOLAR GASES TO RETURN TO NORMAL LVLS
- Treatment #4: take deep inspiration of oxygen from 10L balloon and hold breath for as long as possible. collect alveolar gas sample. Record FAO2, FACO2, and breath-hold time.
REST 2 MINS TO ALLOW ALVEOLAR GASES TO RETURN TO NORMAL LVLS
- Treatment #5: subject hyperventilate by prolonged rapid and deep breathing for 1 min, then hold breath as long as possible. Monitor alveolar O2 and CO2 conc both at end of hyperventilation, and after breath holding. Record FAO2, FACO2, and breath hold time
During hyperventilation why should subject sit in chair
In case syncope (fainting) occurs
