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NEWSLETTER The Official Journal of the Anesthesia Patient Safety Foundation www.apsf.org Volume 30, No.1, 1-16 Circulation 118,032 June 2015 What is Your MH IQ ? by Charles B, Watson, MD, FCCM, and Barbara W. Brandom, MD Question Your Understanding remain unreported, they do provide a profile of metabolic monitors are important in the immedi- 14 of MH: events that take place, and there is no evidence to ate postoperative period as well. suggest a decrease in MH-related death or compli- The anesthesia community has the best under- cations. The most recent review of MH Registry 3. MH is very rare—there is one standing of Malignant Hyperthermia [MH] data shows an increased, rather than decreased, causative genetic mutation because it is a genetically determined illness that is number of deaths reported.3 most often recognized during or immediately after associated with MH anesthesia with the potent inhalational agents In addition, there has been skepticism that suc- susceptibility. and/or administration of succinylcholine. More- cinylcholine, alone, causes MH crisis in susceptible 4,5 FALSE—Depending on the population over, a specific antidote for the MH crisis has been individuals. Older data from the MH registry and newer data from the Canadian MH experience in reviewed, MH crisis has been reported with an available since the late 1970s, dantrolene sodium. incidence ranging from 1:8,000 to 1:30,000 anes- recent years clearly show that MH crisis can be Now dantrolene and other necessary elements thetics. Quarterly reviews of calls to the MH Hot- induced by succinylcholine administration, needed for emergency treatment of an MH epi- line [800-MH-HYPER] made when a caller alone.4,6-8 Succinylcholine induced muscle contrac- sode are immediately available to anesthesia staff suspects MH show that around 30% are MH crisis at most hospital and outpatient anesthetizing ture of patients and swine shown susceptible to MH while most represent other acute processes. Early areas where triggering agents are employed. by halothane caffeine contracture testing have been work focused the problems associated with MH 9,10 Death during an MH crisis has undoubtedly demonstrated. While the actual magnitude of the crisis on skeletal muscle abnormalities because of decreased since the entity was first identified in risk associated with succinylcholine, alone, is the marked increase in muscle tone seen in many the middle of the last century because of anesthe- unknown, it is evident that organizations where suc- MH events.15 In recent years there has been a dra- sia care givers’ increased awareness and ability to cinylcholine may be used with or without triggering matic growth in understanding the genetics treat the crisis. inhalational agents should have both the MH anti- underlying MH susceptibility. Susceptible indi- dote, dantrolene, and an approach for management viduals have demonstrated one or more mutations Your MH “IQ” ? of MH crisis.11 in the calcium release channel [Ca2+] RYR1 gene16 and in genes for 2 other proteins that interact with Test yourself with the following statements. RYR1.17,18 Criteria for establishing a causative Are they true or false? 2. Fever is a late finding in MH crisis. If we take measures to See “MH IQ,” Page 3 1. MH is better understood now, keep patients warm, after more than 40 years of temperature monitoring is anesthesia education, research, unimportant. Methylene Blue and the and clinical experience, so it is FALSE—Fever was one of the 3 early signs of Risk of Serotonin Toxicity no longer lethal. MH crisis reported in a majority of patients by Adair Locke, MD FALSE— There may be an improvement in our reported to the MH registry in recent reviews. understanding of MH susceptibility and the MH Indeed it was the first sign of MH in approxi- Methylene blue is administered intravenously crisis since it was first identified as a fatal perioper- mately one-third and one of the 3 initial signs of by anesthesia providers for a variety of clinical ative event with high fever.1 Indeed, one review of MH crisis in approximately two-thirds of patients uses and may be used with increasing frequency MH in New Zealand reported no deaths from MH recently reported from the MH registry. Tempera- as an intraoperative urologic marker dye due to an crisis from a series of more than 120 crises.2 Unfor- ture monitoring is important and review of data indefinite nationwide shortage of indigo carmine. tunately there are still patients dying of MH every from the MH registry showed that survival after It is a potent monoamine oxidase (MAO) inhibitor, year. MH episodes, individuals with positive MH MH crisis was related to core temperature moni- and in combination with other serotonergic agents biopsies, and MH-like events have been reported to toring. It is likely that, when temperature is not such as selective serotonin reuptake inhibitors the North American MH Registry (NAMHR) since monitored and rising temperature is missed, rec- (SSRIs), MB can produce serotonin toxicity in the 1,2 1988. While data resources in a registry do not pro- ognition of MH crisis is delayed in a significant perioperative period. vide an accurate event baseline and many events number of cases.3,12,13 Also, temperature and other See “Methylene Blue,” Page 5 TABLE OF CONTENTS, PAGE 2 APSF NEWSLETTER June 2015 PAGE 2 TABLE OF CONTENTS Articles: What is Your MH IQ ? ..................................................................................................................... Cover www.apsf.org Methylene Blue and Risk of Serotonin Toxicity .......................................................................... Cover NEWSLETTER AIMS: Should We AIM Higher? .....................................................................................................Page 10 The Official Journal of the Anesthesia Patient Safety Foundation Improving Post Anesthesia Care Unit (PACU) The Anesthesia Patient Safety Foundation Newsletter Handoff by Implementing a Succinct Checklist........................................................................Page 13 is the official publication of the nonprofit Anesthesia An Unusual Cause of Hypoxia With Closed Endotracheal Suction System .........................Page 15 Patient Safety Foundation and is published three times per year in Wilmington, Delaware. Individual Letters and Q&A subscription–$100, Cor por ate–$500. Contri butions to the Foundation are tax deduct ible. ©Copy right, Letter to the Editor: Drug Shortages ...........................................................................................Page 12 Anesthesia Patient Safety Foundation, 2015. The opinions expressed in this Newsletter are not APSF Announcements necessarily those of the Anesthesia Patient Safety Safety Editor, Patient Safety Position Announcement ...............................................................Page 3 Foundation. The APSF neither writes nor promulgates standards, and the opinions expressed herein should Merck Educational Grant to APSF ................................................................................................Page 7 not be construed to constitute practice standards or 2015 Corporate Advisory Council ................................................................................................Page 7 practice parameters. Validity of opinions presented, drug dosages, accuracy, and completeness of content APSF Corporate Supporter Page ...................................................................................................Page 8 are not guaranteed by the APSF. APSF Donor Page ............................................................................................................................Page 9 APSF Executive Committee: APSF Educational DVDs .............................................................................................................Page 12 Robert K. Stoelting, MD, President; Jeffrey B. Cooper, PhD, Executive Vice President; George A. Schapiro, Executive Vice President; Robert J. White, Vice President; Matthew B. Weinger, MD, Secretary; Casey D. Blitt, MD, Treasurer; Sorin J. Brull, MD; Robert A. Caplan, MD; Support Your APSF David M. Gaba, MD; Steven K. Howard, MD; Lorri A. Lee, MD; Robert C. Morell, MD; A. William Paulsen, —Your Voice in Patient Safety— PhD; Richard C. Prielipp, MD; Steven R. Sanford, JD; Maria A. van Pelt, CRNA; Mark A. Warner, MD. Please donate online or make checks payable to the APSF and mail donations to Consultants to the Executive Committee: John H. Anesthesia Patient Safety Foundation (APSF) Eichhorn, MD; Bruce P. Hallbert, PhD. 1061 American Lane, Schaumburg, IL 60167-4973 Newsletter Editorial Board: Robert C. Morell, MD, Co-Editor; Lorri A. Lee, MD, Co-Editor; Steven B. Greenberg, MD, Assistant Editor; Sorin J. Brull, MD; Joan Christie, MD; Jan Ehrenwerth, MD; John H. Eichhorn, MD; Glenn S. Murphy, MD; APSF Newsletter John O’Donnell, DrPH, CRNA; Wilson Somerville, PhD; Jeffery Vender, MD. Address all general, contributor, and sub scription guide for authors correspondence to: Administrator, Deanna Walker may also be directed to the editors. Commercial Anesthesia Patient Safety Foundation The APSF Newsletter is the official journal of the Building One, Suite Two Anesthesia Patient Safety Foundation. It is products are not advertised or endorsed by the 8007 South Meridian Street published 3 times per year, in June, October, and APSF Newsletter; however, upon occasion, articles Indianapolis, IN 46217-2922 February. The APSF Newsletter is not a peer-