Retro- and Ante-grade Amnesia after Conscious Sedation using Midazolam

Kim, Yeong-wook; Keum, Yoon-seon; Mo, Dong-yub; Lee, Jang-yeol; Kim, Hyoun-chull; Lee, Sang-chul

doi:10.17245/jkdsa.2011.11.2.153

J Korean Dent Soc Anesthesiol. 2011 Dec;11(2):153-158. Korean.
Published online May 30, 2016.
https://doi.org/10.17245/jkdsa.2011.11.2.153

Case Report

Retro- and Ante-grade Amnesia after Conscious Sedation using Midazolam

Yeong-wook Kim, Yoon-seon Keum, Dong-yub Mo, Jang-yeol Lee,^* Hyoun-chull Kim and Sang-chul Lee

Author information

Author notes

Copyright and License

- Department of Oral & Maxillofacial Surgery, LivingWell Dental Hospital, Goyang, Korea.
- ^*Department of Oral & Maxillofacial Radiology, LivingWell Dental Hospital, Goyang, Korea.
Corresponding Author: (Email: Livingwell@paran.com )

Received September 29, 2011; Revised December 22, 2011; Accepted December 24, 2011.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Midazolam is known to produce sedation as well as amnesia. Many articles reported about anterograde amnesia, but it is rare that articles about retrograde amnesia. The 61-year-old female patient (64 kg, 154 cm, ASA physical status I) was administered 3.02 mg (0.047 mg/kg) of midazolam during 2 hours. The patient's Modified Observer's Assesment of Alertness/Sedation Scale was 4. The patient who had been consciously sedated with midazolam, exhibited profound amnesia, both anterograde and retrograde after implantation. The patient's memory restoration was begun after 6 hours.

Keywords

Anterograde amnesia; Midazolam; Retrograde amnesia