Cox South Hospital, Springfield, MO.
Clear Image Scientific’s Grant Samuelsen was called into the EP labs at Cox South Hospital, Springfield to help solve some difficult noise problems. Below, are the results from the CIS system installation along with measurements taken from a dry-run test of the noise reducing capability of one Noise-Filtering CIS NR power cord.
From attending CAS Specialist
"Last October, Cox South opened two new EP labs and from the beginning we have noticed a large amount of unipolar noise during almost all cases. We have been working tirelessly to try to eliminate this noise by any means necessary. After much effort I was able to convince our administrative team to reach out to Grant with CIS.
Grant was able to come into the lab on Monday, and ran a few tests demonstrating that in fact we have significant noise within our electrical systems. We were able to perform a wet bath test prior to the CIS M6 Power distributor being placed. This noise test was performed using just one of the CIS filtered power cords. Once this was placed on the PIU, the noise reduction was monumental so we recorded the differences, shown below.
Prior to our next cases, we installed the entire CIS system and during Ablations, noted the lowest amount of noise since the opening the labs back in October. We were able to perform a procedure on the next patient without the use of an IVC electrode, which had previously made it almost impossible to perform CONFIDENSE™ mapping. The change and lowering of noise during cases is obvious. Although we will be performing ongoing analysis of the CIS system, the positive returns we have noted over the first few days of using CIS are estimable. We are now focused on addressing our other system and environmental issues, which will be easier to resolve now that we have a base-line of clean electrical service."
Michael Gleason RT(R)(CI)(VI) RCIS CEPS Clinical Account Specialist KC POD Great Lakes Region, Cox South Hospital, Springfield. MO.
Explanation on the before and after videos from CIS's Grant Samuelson
"These "before and after" measurements were derived from a test called a "wet bath test"designed to determine the noise reducing properties of a single CIS Noise filtering power cord when placed on the Patient Interface Unit of a CARTO® CONFIDENSE™ system. The test is performed by placing surface ECG patches in standard positions on a subject. There are four limb leads and V1. This allows CARTO to have Wilson’s Central Terminal. With WCT CARTO is able to produce unipolars similar to those used during procedures. The subject then places their hand in a saline solution so they are grounded to the same electrodes of the catheter that is in the saline solution. This approximates a real world patient case without the complication, variables or expensive test equipment.
In test video #1, the test was performed with stock power cords on all CARTO electronics. In test video #2, the only variable introduced was a single CIS NR (noise reduction) power cord replacing a stock power cord on the PIU (Patient Interface Unit). The results speak for themselves."