unipolar and bipolar ecg leads
To study the adverse effects which may be caused to patients, a study was conducted with 100 patients of different ages between 4-88 years.
Process Study:
The pacing and sensing thresholds remained on track with the recording of atrial and ventricular sensitivity is set to value more sensitive and kept in unipolar pacing and ventricular fibrillation detection. The study was extended to bipolar sensing, only those who were observed to have interference problems. The pacemaker was programmed at a rate of 40 beats per minute, which was higher than the spontaneous rate bar on occasion to detect the pacemaker functionality. Many analysis were pointing the antenna of mobile phones in the face of the pacemaker. Led to tests to calculate the interference distance and also entered the following parameters, the channel signal, a surface electrocardiogram and intracardiac rlectrograms, etc, in the case when they got phone calls from fixed to mobile. The operations to be reviewed are:
· Change the phone.
· Receiving calls
Allow the phone · to call up to 10 seconds.
• Receiving calls without talk
· Connecting the phone to the Internet.
· Cut off the connection.
Throughout the test analysis, ECG was monitored continuously in order to end the connection if there were interference problems. The performance was marked after testing and reporting of results were conducted and controlled by the changes.
Devices:
He said he was thoroughly checked 31 different devices several companies, but all the devices that were found to have been equipped with modern FEEDTHRU filters and also tested 23 single chamber pacemaker, of which 4 were atrial ventricular inhibited and 19 were inhibited and the left was the lead single (VDD) pacemaker.
Conclusion:
It found that interference occurred when the rate went straight to the pacemaker and the ventricular sensitivity value was 0.25 mV and atrial sensitivity was 0.18 mV. More Later, the intervention was not detected when it has changed the ventricular sensitivity to 0.5 mV.
The second time, interference was detected when the mobile was ring with the ventricular sensitivity set to 0.5 mV and then was not detected when the level rose to 1.0 mV. It was also noted that there was no interference when the mobile moves away from the pacemaker at a distance greater than 2 cm. We recommend using the filter device equipped with FEEDTHRU.
Finally, the evidence the conclusion that patients should not carry mobile phones closer to the pacemaker and is also recommended to schedule a ventricular sensitivity how it is set at 2.0 mV or even lower sensitivity level.
About the Author:
Ian Ball is an expert on the telecomms industry
Article Source: ArticlesBase.com – Pacemaker Dysfunction Caused by Mobile Phones:
