The PRAETORIAN score calculator

The PRAETORIAN score
calculator

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The PRAETORIAN score

The PRAETORIAN score is a non-invasive method to evaluate the S-ICD implant position using routine post-implant bidirectional chest X-rays.

The steps in the score may be used to evaluate S-ICD position and implant technique on how to improve implantation technique.

Does the X-ray meet the criteria to apply the PRAETORIAN score?

AP and Lateral chest X-ray

Determine the number of coil widths of fat tissue between the nearest half of the coil and sternum or ribs.

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Determine the position of the generator in relation to the midline.

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Determine if there is more or less than 1 generator width of fat tissue between the nearest point of the generator and the thoracic wall.

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Low risk

PRAETORIAN score

< 90 points

These patients have a low risk of conversion failure.

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AP and Lateral chest X-ray AP chest X-ray Lateral chest X-ray