The primary aim of this study is to derive a prediction rule to estimate the required length for placement of the CVC tip at the mid-point of the SVC from simple anatomical landmarks that are consistent with the known surface projections of the great veins. The accuracy of this rule will be examined using TEE and is intended for adult patients undergoing cannulation of the right IJV utilizing a middle approach. As a secondary aim, we will examine the performance of this suggested rule as contrasted with two other popular methods for estimation of the CVC length, the Peres formula and the C-length method.
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Accuracy of surface landmarks for prediction of CVC depth required to place the CVC tip at the mid-SVC.
Timeframe: Outcome will be assessed at completion of catheterization procedure
Accuracy of C-length for prediction of CVC depth required to place the CVC tip at the mid-SVC.
Timeframe: Outcome will be assessed at completion of catheterization procedure