title: Informed consent: is it always necessary?
abstract: Informed consent plays a pivotal role in human clinical research. It serves as a marker for the subject's comprehension of all the pertinent elements of the study. It is also a pledge by the investigator that during the trial, the rights and safety of the subject will be protected. Informed consent attempts to ensure that ethical behaviour will be upheld throughout the study. However, obtaining informed consent from certain vulnerable populations is a challenge, and thus warrants improvement. While informed consent is mandated for almost all clinical trial involving human subjects, there are situations of emergency research and trials with minimal risk that call for a waiver of the consent.
authors.affiliation: Department of Orthopaedic Surgery, Rothman Institute of Orthopaedics, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA. parvj@aol.com
authors.forename: Javad
authors.initials: J
authors.lastname: Parvizi
authors.forename: Rajit
authors.initials: R
authors.lastname: Chakravarty
authors.forename: Bora
authors.initials: B
authors.lastname: Og
authors.forename: Adriana
authors.initials: A
authors.lastname: Rodriguez-Paez
mesh_terms: D035843:Biomedical Research / Q000941:ethics*; D004630:Emergencies; D006801:Humans; D007258:Informed Consent; D018579:Patient Selection / Q000941:ethics; D019564:Unnecessary Procedures; D035862:Vulnerable Populations