An informed consent is a legal procedure to ensure that a patient or client knows all of the risks and costs involved in a treatment. The elements of informed consents include informing the client of the nature of the treatment, possible alternative treatments, and the potential risks and benefits of the treatment.
In order for informed consent to be considered valid, the client must be competent and the consent should be given voluntarily.
Would it be safe to assume that you signed a consent form or your wife signed it for you ?
Also you did not state why you were having catherization ~ did mention the blockage but were you having sx when you went to the ER. I assume you were.
I agree with you, we all need to advocate for ourselves when it comes to have procedures and medical care.