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Lidocaine usage in critical heart patients

My father recently passed after a heart attack with little damage. He was taken to the local ER and stabilized before transfer to nearest cardiac intervention unit. His blood pressure had been stable at 98/50 for several hours. The first part of the prep for heart cath was an injection of topical lidocaine to the incision site for the catheter. this was the only action taken until then upon arrival at this hospital. His blood pressure dropped to 72/64 in about 30 seconds. A few minutes later he was on cpr, a few minutes later he was dead. Given my research and personal experiences with lidocaine I am certain the injection finished him off. My point is that such a drug with known possible side effects of cardiac arrest should NEVER be used on someone in such cases even though it seems to be standard procedure. PLEASE revaluate this medical community.
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replied January 21st, 2012
I well understand your grief at the loss of your father, and also can understand your looking for some explanation for his death. However, I doubt that Lidocaine was the problem. It is a drug that has been used intravenously many hundreds of times for the treatment of abnormal heart rhythms, and to the best of my knowledge its use has been relatively safe. If you have done research with drugs then you know that there isn't such a thing as a drug without undesirable effects in some persons.
You state that your father had a heart attack ("myocardial infarction") with "little damage." I am sure you understand that there really isn't such a thing as a little heart attack - and that all such events can be associated with death. Was a post-mortem examination done?
Please be aware that I am unable to diagnose medical conditions online.

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