Ensuring the aortic pressure (Pa) has been zeroed

↳ This is a section part of Moment: DEFINE-PCI Study Training Tools - Physiological Measurements with MCQ (for Investigators)

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Summary

Justin Davies illustrates a step-wise guide to ensuring the aortic pressure has been adequately zeroed prior to commencing any physiological assessments.

Learning points:-

Need to ensure calibration between hemosystem and physiology systems
Stepwise approach to calibration prior to measurement

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Target Audience

DEFINE-PCI investigators
Interventional Cardiologists
Healthcare professions

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Learning Objectives

Learn the measurement techniques for DEFINE-PCI
Making static iFR measurements
Making iFR pullback recordings
Understanding and troubleshooting physiological measurement pitfalls

Other Components in this Moment

Overview

Ensuring the aortic pressure (Pa) has been zeroed

Aortic pressure trace

Preparation of the Verrata pressure wire prior to making physiological measurements

Administration of intracoronary nitrates prior to wire insertion

Shaping the straight-tipped Verrata wire prior to insertion

Insertion of the Verrata wire, and then removing the needle introducer

How to perform normalisation

How to advance the Verrata wire distally before making measurements

How to make a spot iFR measurement in the distal coronary artery

Examples of how to perform an iFR pullback assessment

How to check and document pressure wire drift at the end of an assessment

Summary