Introduction

In critical care units various decisions are taken on the basis of blood pressure recordings, however, non invasive blood pressure and invasive arterial blood pressure recordings often give different values, and the reason for this discrepancy is not clear. In critical care units various kind of pathological patients are seen with very different hemodynamic profiles. They may be in septic shock or circulatory failure or may be on vassopressor or vassodilators, extremities may be in vasospasm or there may be acidosis or alkalosis due to various reasons.

Oscillometric method is used in non invasive blood pressure recordings and it’s widely accepted. However, invasive arterial blood pressure is considered as a standard of monitoring in patients requiring a more intense blood pressure control and monitoring.^1,2,3,4

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Dr Pankaj Kumar Omar

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