Respiratory sinus arrhythmia (RSA)
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Created by Andrea (Unlicensed)
Last updated:Â Nov 09, 2016
Respiratory Sinus Arrhythmia (RSA)
From the AcqKnowledge home screen select: Open a graph file, Graph file on Disk, and click OK
This will allow you to access files directly from the T: Drive
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Minimize all channels except Channels 2 & 9 that correspond to Respiration & ECG respectively, by clicking on the triangle icon on the left hand slide of the channel number.
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Autoscale waveform horizontally using the autoscale feature in the toolbar
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The Analysis will identify the R-R interval values in the ECG channel & create a new channel for that waveform. Then it will identify the inspiration & expiration results before conducting the RSA analysis for the Respiration channel
Go to Analysis → HRV and RSA → and select "RSA - Time Series " from the options menu
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From the Respiratory Sinus Arrhythmia dialogue menu, set the following settings:Click OK
* Consider generating logarithmic RSA for additional analysis
Autoscale waveform horizontally using the autoscale feature in the toolbar
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Acq will generate the following results:Inspiration and Expiration signals will be marked on the Respiration channel that will help us identify the maximum R-R interval
R-R interval is displayed in ms and was calculated based on our analysis
The ECG waveform has also been completely analyzed
Results are also recorded on an Excel spreadsheetÂ
Time: The beginning of a respiration cycle
Min Period: Minimum R-R interval during the inspiration
Max Period: Maximum R-R interval during the expiration
RSA: Difference between the Max Period & Min Period expressed in milliseconds using linear scaling
HRV & RSA Analysis
HRV and RSA Analysis may also be conducted together
Complete Steps 2 & 3 under Respiratory Sinus Arrhythmia before proceeding to step 3
Go to Analysis → HRV and RSA → and select "Multi-epoch HRV & RSA - Spectral" from the options menu
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Generate Analysis