Plethysmography variation index versus pulse pressure variation as an indicator of fluid responsiveness in colorectal surgeries during immediate postoperative period

ABSTRACT

Background During major abdominal surgery, goal-directed fluid therapy may lessen postoperative morbidity. It has been demonstrated that the Plethysmography Variability Index (PVI), which is generated from the pulse oximeter waveform, can predict fluid responsiveness in a variety of surgical settings. Pulse pressure variation (PPV), one of the indicators of fluid responsiveness, has received the most research attention and clinical application of all the indicators. Through arterial cannulation, primarily the radial artery, pulse pressure fluctuation is recorded. The cyclic variations in intrathoracic pressure have less of an immediate impact on pulse pressure than they do on systolic pressure. In this study, sedated, intubated, mechanically ventilated patients admitted for postoperative resuscitation in our surgical ICU following colorectal surgeries had their fluid responsiveness assessed using the Plethysmography Variation Index (PVI) and the Pulse Pressure Variation (PPV) to compare their effectiveness and reliability.

KEYWORDS:

• Plethysmography variation index
• pulse pressure variation
• cardiac index
• goal directed fluid therapy

List of abbreviations

Table

Disclosure statement

No potential conflict of interest was reported by the author(s).

Acceptance of participation and ethical clearance

The research ethical committee at the medical school at Ain Shams University gave its approval to this study. (FMASU MD 259a/2018/2019/2020/2021) with Pan African Clinical Trial Registry, identifier PACTR202309486066044

Availability of data and material

All the data are available upon reasonable request from the main author.

Additional information

Funding

There was no specific funding from any funding facility.