3 Ethical considerations
Introduction
Consent
1 The procedure itself must be described, including the technique and its implications, and the intended benefit of doing it.
2 Information about the risks and complications must be given, which usually means all the risks, as well as some information about the consequences of the complication (e.g. perforation at colonoscopy is a rare occurrence but, if it happens, a laparotomy and colostomy may be needed).
3 Associated risks (e.g. from anaesthesia or from other drugs that may be necessary) should be described.
4 Alternative medical or surgical investigations or treatments should be discussed, so that the reasons for the specific advice given are clear. In addition, the implications of the ‘do nothing’ option should be discussed.
Legal requirements for consent
There are three aspects of consent that are required in law:
1 The patient must be mentally and legally competent to give consent.
2 The patient must have been sufficiently well-informed to be able to give consent.
3 Consent must have been given voluntarily, and not under duress.
Competence and capacity for consent
The definition of mental capacity is given in Box 3.1. If the patient does not have capacity to make a decision, the doctor must involve the relatives, although the doctor is still taking the final decision. If the patient does not have capacity and has no relatives, in the UK the doctor must involve an independent mental capacity advocate (IMCA) to help with decision-making, particularly if consenting for surgery or for decisions about change of living circumstances.