heart rate variability guide carefusion
TRANSCRIPT
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Heart Rate Variability Guide
Randy ClareRespiratory Diagnostics
2016
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Normal HRV
Normal Poincaré Plot
Has variability to react to the physiologic changes that the body is going through during sleep
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Heart Rate Variability
• The Poincaré Plot◦ X-axis :: measure of the current RR interval◦ Y-axis :: measure of the next RR interval
Current RRn Interval
(x-axis)
Next RR Interval (RRn+1)(y-axis)
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Bradycardia
- Normal Sinus Rhythm, where heart rate is below 60 bpm
- All of the points shift to the upper right
- Display’s INCREASED time between R-R intervals
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Tachycardia
◦ All of the points shift to the lower left
◦ Display’s DECREASED time between R-R intervals
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-“Dot” Pattern represents pacemaker-NO variability from the patient-Heart rate totally controlled by pacer
Pacemaker
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On Demand Pacemaker
◦ Controlled Rhythm
◦ Not much variance
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OSA – Brady/Tachy
• Typical Pattern for OSA patient◦ HR DECREASES during Apneic Event◦ HR INCREASES after Apneic Event
Decreased HR
Increased HR
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Obstructive Sleep Apnea
“Fan” Pattern• Wide variations in R-wave
interval• Typical OSA Patient pattern• Data points vary from
Tachycardia (lower left corner) to Bradycardia (upper right corner)
Tachycardia Points
Bradycardia Points
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OSA Patient Pre-Treatment
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OSA Patient Post Treatment
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© 2015 CareFusion Corporation or one of its subsidiaries. All rights reserved.
Nox T3 by CareFusion, For Sleep Disordered Breathing (SDB)
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Overview
• Built by Nox Medical• Started a new era in home sleep testing• Embraced by thousands of users world wide• Revolutionary technology• Delivers improved clinical efficiency• Comfortable for all patient groups Pediatric thru
Adult
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Questions
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Thank you