Picture based from : Godwin, Steven A. (2018). Procedural Sedation and Analgesia. Elsevier Inc. Chapter 4. p. 53. Picture taken from : Godwin, Steven A. (2018). Procedural Sedation and Analgesia. Elsevier Inc. Chapter 4. p. 53. Patanwala, A., Thomas, M., Casanova T.,...