CASE REPORT
Year : 2014  |  Volume : 3  |  Issue : 2  |  Page : 509-511

Patient-ventilator interaction: Unusual ventilator graphics and management using positive end expiratory pressure – A case report


School of Allied Health Sciences, Manipal University, Manipal, India

Correspondence Address:
Ramesh Unnikrishnan
School of Allied Health Sciences, Manipal University, Manipal
India
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Source of Support: None, Conflict of Interest: None


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Approximately 25% of patients receiving mechanical ventilation have significant patient ventilator asynchrony which is associated with prolonged duration of mechanical ventilation. Here we report an unusual presentation of ventilator graphics “saw tooth” appearance in both pressure-time and flow-time graphs. An increase in the applied PEEP level resolved the saw tooth pattern in the graphics. The possible explanation for the graphics displayed is heart-lung interaction which is cardiogenic oscillation. If this is true, then this pattern can be used as a clinical tool to apply lung inflation manoeuvres.


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