CARDIOVASCULAR
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Drift

BE CONFIDENT IN YOUR RESTING INDEX DECISION-MAKING with Abbott’s Pressure Wire™ X Guidewire: Abbott’s innovative sensor housing designs offers <1 mmHg/30 minutes with an 84% reduction in drift due to microbubbles.2

Drift is an issue that can lead to misclassification of stenosis.

There are two types of drift: wire-related (true drift) and procedure-related (apparent drift). While there are multiple causes of procedure-related drift, microbubbles (from residual air in device) are a major cause of drift5. Clinically significant drift is classified as ≥3 mmHg1

Drift affects the accuracy of most pressure measurement devices.3 Accuracy is particularly critical for resting indices, as clinical decisions from resting indices are more impacted by drift than FFR4,5. Compared to the hyperemic state, smaller separation between Pa and Pd at rest means it is critical to detect even the slightest difference of pressure.

The Effect of Drift on Stenosis Misclassification by Physiology Index3

Chart showing effect of drift on stenosis misclassification by physiology index

The Distribution of Values for FFR, IFR and Whole-Cycle PD/PA3

Set of charts showing the distribution of values for FFR, IFR and whole-cycle PD/PA

References

  1. Volcano Corp. Verrata guidewire and PrimeWire Prestige‡ Plus guidewire IFUs, Opsens Inc. OptoWire guidewire and OptoWire II guidewire IFUS, ACIST Medical Systems. Navvus‡ Microcatheter IFU, Boston Scientific Corporation. Comet guidewire IFU, PressureWire™ X guidewire IFU.
  2. Test(s) performed by and data on file at Abbott.
  3. Jeremias, A. et al. A Test in Context: FFR: Accuracy, Prognostic Implications, and Limitations. JACC 2017; 69:2748-58.
  4. Van’t Veer, M. et al. JACC. Comparison of Different Diastolic Resting Indexes to iFR. 70 (25), 2017.
  5. Cook, C. CCI. Quantification of the Effect of Pressure Wire Drift on the Diagnostic Performance of FFR, iFR & Pd/Pa.
Important Safety Information

MAT-2011811 v1.0

IMPORTANT SAFETY INFORMATION
 

rx-only-logo  PressureWire™ X Guidewire

 

Indications: The PressureWire™ X Guidewire is indicated to direct a catheter through a blood vessel and to measure physiological parameters in the heart and in the coronary and peripheral blood vessels. Physiological parameters include blood pressure. The PressureWire™ X Guidewire can also measure blood temperature.

Contraindications: This guidewire is contraindicated for use in the cerebral vasculature.

Warnings:

  • No modification of this device is allowed.
  • The PressureWire™ X Guidewire is supplied sterile. Discard the guidewire if the pouch is opened or damaged, compromising the sterile barrier. The guidewire is designed for single use only and shall not be reused or resterilized. Adverse effects of using a non-sterile or resterilized guidewire may include, but are not limited to:
    • Local and/or systemic infection
    • Mechanical damage
    • Inaccurate readings
  • Observe all guidewire movements. Whenever the guidewire is moved or torqued, the tip movement should be examined under fluoroscopy. Never push, withdraw, or torque the guidewire if it meets resistance or without observing corresponding movement of the tip, otherwise vessel/ventricle trauma may occur.
  • Torquing or excessive manipulation of the guidewire in a sharp bend, against resistance, or repeated attempts to cross a total vessel occlusion may:
    • Cause dissection or perforation of blood vessels
    • Cause vessel spasm
    • Damage and/or fracture the guidewire
  • When introducing the guidewire, flush the catheter and administer anticoagulation as for a standard catheterization procedure or clotting may occur.
  • Do not use the guidewire in the ventricles if the patient has a prosthetic mechanical or biological valve. It may result in damage to both the prosthesis and the guidewire, which may cause injury or death.
  • Use of the PressureWire™ X Guidewire in conjunction with interventional devices with a short rapid exchange may result in a folded or fractured guidewire.
  • High frequency surgical devices must not be used on a patient at the same time as the guidewire.


Precautions:

  • The PressureWire™ X Guidewire is a delicate instrument and should be handled carefully.
  • Make sure that the transmitter is kept dry to ensure accurate pressure and/or temperature readings. Inaccurate readings may necessitate device replacement.
  • Do not use the guidewire in conjunction with atherectomy catheters. It may damage the guidewire.
  • Do not withdraw or manipulate the guidewire in a sharp-edged object. It may result in abrasion of the guidewire coating.
  • Factors that may affect the accuracy of the diagnostic information include, but are not limited to:
    • Improper placement of the aortic pressure sensor.
    • Failure to achieve maximum coronary and myocardial hyperemia.
    • Blood flow affected by the position of interventional devices, such as balloon catheters.
  • Guidewire readings may be affected by defibrillation. Rezero the guidewire after defibrillation use.
  • Do not measure pressure when the guidewire sensor element is in a sharp bend or in contact with atrial or ventricular walls. It might result in pressure artifacts.
  • Do not use the PressureWire™ X Guidewire together with another guidewire, for so called jailed wire technique, due to difficulty in guidewire withdrawal and possible guidewire entrapment.
  • Store at room temperature in a dry and dark place.


Potential Adverse Events: Potential complications which may be encountered during all catheterization procedures include, but are not limited to: vessel dissection or occlusion, perforation, embolus, spasm, local and/or systemic infection, pneumothorax, congestive heart failure, myocardial infarction, hypotension, chest pain, renal insufficiency, serious arrhythmias, or death.

MAT-2103599 v1.0

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DO YOU WISH TO CONTINUE AND EXIT CARDIOVASCULAR.ABBOTT?

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