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Ketamine is a potent anesthetic and in combination with lidocaine should provide good pain control.
However, this combination has significant interaction with fentanyl which is a potent narcotic.
There is increased risk of CNS depression meaning risk of affecting breathing and vital brain functions.
There are also risks of heart arrhythmia, drop in blood pressure and heart rate as well.
Hence it is better to avoid fentanyl while being on this infusion.
Yes you can do that.
That will be better to avoid any withdrawal symptoms as well.Best wishes,It was my pleasure to help you today.If I have answered all your questions, Please rate my response Excellent (click on the 5th star on top).Please bookmark my profile for fast, reliable authentic answers!This is the link to my profile:http://www.justanswer.com/medical/expert-dr-basu/
Ok in that case, you can just take the patch off on Tuesday night to give at least 12 hours of break.
You can resume fentanyl patch from Thursday onwards.
It is still better to avoid fentanyl and ketamine.
Skipping one day of fentanyl should not be problematic.