NCT02817893

Comparison of Respiratory Variations of the Pulse Oximetry Plethysmographic Raw Signal and Pulse Pressure During Abdominal Surgery (PLETHYSMO)

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 20 (actual)
• Sponsor: Hospices Civils de Lyon · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The waveform plethysmographic signal can be used to establish an index for predicting fluid responsiveness (∆POP: respiratory variation of the plethysmographic waveform of pulse oximetry). This index was validated in some studies and because of its non-invasiveness it seems very interesting in anesthesia. However, in a previous study the investigators evaluated the correlation between the results provided by this index (∆POP) and those of the reference index (∆PP: pulse pressure variation), and the obtained results were significantly lower than what had been previously described. In this study, the index was calculated from a recording of a filtered signal. This unavoidable application of a filter on anesthesia monitors could contribute to the discrepancy between the ∆POP and the ∆PP. The realization of a new study, comparing ∆PP and ∆POP obtained from an unfiltered plethysmographic signal, should answer the ∆POP ability to be used in place of ∆PP.

Conditions

• Abdominal Surgery

Timeline

• Start date: 2015-10-01
• Primary completion: 2016-04-01
• Completion: 2016-08-01
• First posted: 2016-06-29
• Last updated: 2016-06-29