Mond® RVOT Stylet

The Mond RVOT Stylet povides precise, simple and quick access for septal placement. 

Innovative Design for Precise Lead Positioning

• Three-dimensional, curved stylets with posterior angulation dramatically increase the precision of lead placement and allow easy access to the RVOT septal location
• Proprietary heat-treatment process enables stylets to hold their shape permanently

Developed for Greater Ease and Flexibility

• Simple, effective tool that helps physicians maneuver the lead to the optimal but difficult-to-reach positions
• Two curvatures to accommodate normal and large heart sizes
• Two stiffness levels available to accommodate your implantation preferences for use with different leads
• Durable, high-tensile stainless steel improves handling and reduces the likelihood of kinking
• Stylet is available with an optional, ergonomic implant tool, which allows for an easy single-handed helix extension
  

Models

• 4140
• 4141
• 4150
• 4151

Confirming Accurate Lead Placement in the RVOT Septum

Step 1

Three fluoroscopic images are critical for confirming lead placement. Once the RV lead is placed appropriately in the RVOT septal location, the lead is at about the same height as the RA appendage lead, as show in these images. 

Step 2

EKGs are another valuable tool that facilitate precise septal location within the septum and are used to describe various RVOT placements. Look for a negative deflection in Lead I when using a 12 lead EKG, as seen in the image below.

Images courtesy of Harry G. Mond, MD, FACC, The Royal Melborne Hospital Victoria, Australia

 

Long-term Lead Performance Using the RVOT Septal Stylet

An analysis of 100 patients who had ventricular lead placement in the RVOT septum was conducted by Dr. Mond.¹ The data below measures sensing, pacing and impedances at implant, six months and one year. The outcome of the study revealed:

97% Accuracy Achieved

A success rate of 97% accurate placement was achieved in the RVOT septum at the first attempt, using the postero-anterior fluoroscopic view*

Stable, Long-term Clinical Performance¹

• Long term electrical stability is impressive, with excellent R wave sensing and pacing
• No lead dislodgments or repositions occurred; no problems, operative or post-operative, were reported
• No cases of high pacing thresholds were reported, with the highest threshold being 1.5 V, and 94% of all patients having a simulation threshold of <1 V, both at one year

The study confirms stability and RVOT lead performance comparable to traditional pacing sites.¹

Journal Articles

• Caroline Medi, B. MED. and Harry G. Mond, M.D. Right ventricular outflow tract septal pacing: long-term follow-up of ventricular lead performance. Pacing and Clinical Electrophysiology. February 2009; 32(2): 172 - 176.
• Harry G. Mond MD, et al. The Right Ventricular Outflow Tract: The Road to Septal Pacing. Pacing and Clinical Electrophysiology. April 2007; (30) 4: 482-491.

¹ Medi, CB, Mond, HG . Right ventricular outlflow tract septal pacing: long-term follow up of ventricular lead performance. PACE. 2009;32:172-177.
* To be published by Mond, HG.