RT Book, Section A1 McDonald, John S. A1 Chen, Biing-Jaw A1 Kwan, Wing-Fai A2 DeCherney, Alan H. A2 Nathan, Lauren A2 Laufer, Neri A2 Roman, Ashley S. SR Print(0) ID 56968467 T1 Chapter 24. Obstetric Analgesia & Anesthesia T2 CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 11e YR 2013 FD 2013 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-163856-2 LK accessmedicine.mhmedical.com/content.aspx?aid=56968467 RD 2024/03/28 AB Analgesia is the loss or modulation of pain perception. It can be (1) local and affect only a small area of the body, (2) regional and affect a larger portion of the body, or (3) systemic. Analgesia is achieved by the use of hypnosis (suggestion), systemic medication, regional agents, or inhalational agents.