![]() There were no major adverse events related to the devices used. The results showed freedom from afib at 12 months (either on or off antiarrhythmic drugs) for 73% from a single procedure and 93% from one or more procedures. The UNCOVER AF trial used the AcQMap System in 127 persistent afib patients. The catheter contains 48 electrodes and can quickly create a 3D map by rotating around the atrium. It is a non-contact catheter, meaning the basket catheter floats freely in the left atrium and doesn’t need to touch the surface of the heart to generate a map. The system uses the AcQMap 3D Imaging and Mapping basket catheter. This includes the electrical activity across cell membranes and maps a wider area of the heart. The system uses dipole density mapping instead of the typical voltage mapping to provide a more detailed mapping. These systems also offer other real-time information, such as atrial pressure and volume, so the EP can easily monitor the patient during the procedure.ĪcQMap (Acutus Medical) High Resolution Imaging and Mapping System uses 3D ultrasound overlaid with high-resolution electrical activation maps to reconstruct the heart. That means the EP can see whether the conduction block has been achieved. Thus, if the pre-procedure scan doesn’t easily correspond with the real-time view of the heart, this process can take much longer.Įlectroanatomic mapping systems provide real-time data on electrical activity within the heart. ![]() However, the positioning of the anatomy may have changed since the scan. It takes about 15 minutes to complete this process, called registration. After identifying several common areas on the two images, the system merges the real-time view and pre-procedure scan into a 3D picture. The EP does this by moving the catheter slightly, verifying its location in the heart, and taking note of large structures such as the pulmonary veins. Those scans can be loaded onto Ensite NavX or CARTO and matched with the real-time 3D image of the heart. Typically, patient CT or MRI scans may be taken a few days or weeks before the procedure. The CARTO and NavX systems are compatible with various mapping catheters.Įlectroanatomic mapping systems are sometimes called multi-modality mapping or image integration systems because they can show pictures or data from other sources. The latest generation of the Ensite NavX system, Ensite Velocity, uses body-surface patch electrodes to construct the 3D cardiac map. Six electrode patches, three on the patient’s back and three on the chest, track catheter movement and build a 3D map of a patient’s cardiac structures. The latest generation of the CARTO system, CARTO 3, uses an electroanatomic location pad located under the table where the patient lies. CARTO and Ensite NavX use different methods to do this. Then, when the EP moves the catheter in a sweeping motion, the systems track the catheter’s location. These systems create a real-time 3D view of the heart by positioning a mapping catheter in the heart. However, the systems are expensive, so they are not available at all facilities. In addition, the use of an electroanatomic mapping system may lessen the time that EPs and patients are exposed to radiation. Additionally, they may reduce complications, such as perforation of the heart or esophagus. Each provides colorful 3D images that show variations in a patient’s anatomy.Įlectroanatomic mapping systems may assist EPs in assuring that lesions are contiguous (no gaps). The most common electroanatomic mapping systems for afib ablation are the Ensite NavX (Abbott) and CARTO (Biosense Webster). Because of the shortcomings of fluoroscopy, some electrophysiologists (EPs) use electroanatomic mapping systems.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |