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383138 tn?1314171373
heart arrhythmias & lidocaine infusion question
I have an urgent question, is it safe to have lidocaine infusion (for pain relief) when I have many heart arrhythmia problems? My cardiologist says no, but my pain dr. thinks it would be OK. I had previous severe heart reaction to the dental injection containing lidocaine in the past, so bad that my heart beat so fast I started blacking out and they had to immediately put me on oxygen. dentist & cardio said no lidocaine ever again, cardiologist said if it happened gain, my heart may not be able to handle it or recover from it. I have tachy., brady., PSVT, PACs, PVCs, SVEs (all previously diagnosed on holter monitors, etc.) I also have another problem that was never caught on the monitors since it didnt do it when I had monitors on - My heart also goes into episodes of very intense "quivering" rather than beating, those only last a few seconds, but they are the scariest! I am on toprol xl daily, 25 mg reduced from 50 mg (on that for many years) but recently reduced dosage because lately my blood pressure has been dropping very low and  then going up high, back & forth daily. Heart problems run in both sides of my family. And with my sever heart sensitivities to lidocaine & other meds, I am extremely worried about getting the lidocaine IV infusion, I found in the lidocaine information that it also has heart risks even for people without heart problems. They have heart monitor on during infusion, but I am scared to take the chance, my pain doctor scheduled it anyway to be done this Fri. Does anyone know anything about the dangers of lidocaine infusion with heart arrhythmia problems? Any information would be much appreciated, I need to make a decision right away and don't know what to do. Thank you.  
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1124887 tn?1313758491
Hello.

If your cardiologist says no, I would strongly consider following his advice. After all, he is the one who knows your heart condition.

Lidocaine has strong effects on the heart (it's an antiarrhythmic drug which also, like most antiarrhythmic drugs, may provoke arrhythmias). It can be used to relieve pain, actually through the same mechanisms.

If you had this reaction towards a local injection, I can't believe which effects you may have with an IV infusion.

However, I have one question. Dental lidocaine often contains adrenaline, to constrict blood vessels and keep the lidocaine from having systemic effects. Could it be that your reaction actually was towards adrenaline and not lidocaine? I don't know, but you should ask your cardiologist. Anyway, if he is against IV lidocaine and you had this reaction, I would not take the chance..
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