Abstract
Background: Pain in post operative patients is underestimated due to difculty of its assessment. Various scales and hemodynamic changes are used for pain assessment which are difcult to assess and sometimes not reliable. Masimo pulse oximetry derived perfusion index is a simple noninvasive, rapid and objective tool for pain evaluation in post operative patients. Objective: To evaluate usefulness of perfusion index as objective indicator of pain after rescue analgesia administration in post operative patients. Materials And Methods: Data were collected from 120 non intubated post operative patients of age group 18 to 80 years. Masimo pulse oximetry probe was connected to the patients. At the rst request of analgesia (T1) perfusion index, BPS-NI, patients haemodynamic were recorded following which rescue analgesia was given. Second measurements of the above parameters were taken again thirty minutes there after (T2). Results: There was signicant increase of perfusion index with signicant decrease of BPS-NI, MAP, heart rate following rescue analgesia administration. There was no signicant change in mean axillary temperature, peripheral oxygen saturation following rescue analgesia. Conclusion: Pulse oximetry derived perfusion index is a non-invasive, easy method, less time consuming. It can be used for evaluation of pain assessment and assessment of efcacy of rescue analgesia in post operative patients.
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