| ORIGINAL ARTICLE |
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| Year : 2023 | Volume
: 17
| Issue : 1 | Page : 7-11 |
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Perfusion index during endotracheal intubation and extubation: A prospective observational study
Prerana N Shah, Azho Kezo
Department of Anaesthesiology, GSMC and KEMH, Parel, Mumbai, Maharashtra, India
Correspondence Address:
Prerana N Shah
Department of Anaesthesiology, GSMC and KEMH, Mumbai - 400 012, Maharashtra
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/sja.sja_539_22
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Introduction: Perfusion index (PI) can be detected using a pulse oximeter. Its value decreases in response to noxious stimuli. Here, we investigated its efficacy in detecting hemodynamic responses during endotracheal intubation and extubation.
Methods: An approval from the institutional ethics committee was obtained along with a written informed consent from the patients involved in this study. A sample size of 30 was calculated. Reading of PI, heart rate, and blood pressures (systolic, diastolic, and mean arterial) were recorded at pre-intubation, post-intubation, during neuromuscular block reversal, pre-extubation and at extubation. Clinically significant heart rate, blood pressure (systolic, diastolic, and mean) and PI was defined as increase by >10 bpm, rise by ≥15 bpm and a decrease by ≥10%, respectively, from pre-intubation value.
Results: Clinically significant change in PI was seen at all intervals with maximum decrease in PI occurring during neuromuscular block reversal (42.6% at the start and 56.7% at the end of neuromuscular block reversal). A negative correlation was noted between PI and the other non-invasive hemodynamic parameters.
Conclusion: PI decreases on noxious stimuli and correlates negatively with the other non-invasive hemodynamic parameters. Hemodynamic response at neuromuscular block reversal is maximum.
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