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Weve done many
columns on things that can go wrong while patients are in the radiology suite
or the MRI suite. The MRI suite, in particular, presents
special challenges for those responding to unanticipated events. That is the
reason that training and simulation exercises are so
important in preparing all staff for such events.
One such event is
the airway emergency occurring in a patient in the MRI suite. Patients
undergoing MRI often have multiple acute medical conditions plus comorbidities
that may place them at risk for events during MRI. Many of the inpatients are
receiving opiates or other drugs that may depress respiration. Add to that the
fact that many patients are given sedation before undergoing MRI because of
claustrophobia and it should be no surprise that airway emergencies happen in
the MRI suite.
Anesthesiologists McClung and Subramanyam (McClung
2020) addressed airway emergencies in the MRI suite in a recent issue of
the APSF (Anesthesia Patient Safety Foundation) Newsletter. They begin with a
discussion about the importance of understanding the MRI environment is divided
into four Zones designated I through IV, with Zone IV being the MRI scanner
magnet room. They stress that the MRI magnetic field is invisible, always on,
and can affect ferromagnetic equipment of any size in Zone IV, potentially
converting it to a projectile that is drawn into the scanner with a strength
and speed that can be deadly. They also note that, in addition to risks to
humans, damage to equipment can occur from such events. (You may recall in our January 7, 2010 Patient Safety Tip of the Week Even More Concerns About MRI
Safety we noted a Swedish
study showing that material injuries were more common than actual human
injuries in MRI projectile incidents but the potential for serious human harm
was very high).
They then discuss
equipment issues, noting that very few airway devices have been specifically
designed for safe use in MRI. Medical devices and equipment that might be used
in the MR environments should be labelled as MR unsafe, MR conditional, or MR
safe. Some laryngeal mask airways and endotracheal tubes contain small amounts
of ferromagnetic material but may be designated MR conditional because, while
they might affect image quality, they are not likely to cause patient harm. Those
airway devices have been used safely along with plastic oropharyngeal airways
and bag mask ventilation units. But they stress that classic metal laryngoscopes are considered unsafe as malfunction with
sudden failure to operate can occur in Zone IV and nickel in the laryngoscope
battery is ferromagnetic. Instead, single-use or reusable MRI-conditional devices should be used. (Some such devices are expensive
but cost considerations would pale compared to costs of a malpractice
settlement related to using MR-unsafe devices.)
Next, they stress process and procedures, relying heavily on
the most recent update of the ASA practice advisory on anesthetic care for
magnetic resonance imaging (ASA
2015). That stresses that, during an airway emergency, anesthesia
professionals and other health care providers must be prepared to enter Zone IV
quickly. The advisory states that Alternative MRI safe/conditional airway
devices should be immediately available in the MRI suite. Personnel must
recheck themselves for presence of ferromagnetic objects and equipment prior to
entering the scanner. That is where we think its important for the MRI staff
to serve as traffic cops during that emergency to enforce checking for
ferromagnetic objects. The practice advisory states that airway equipment
immediately available to the team in Zone III should be MR-conditional for all
scanners in the location. If it is safe, the airway should be supported with
bag mask ventilation while the patient is removed from Zone IV to a nearby
location in Zone III or Zone II where a full complement of airway and resuscitation
equipment can be used and emergency personnel summoned for help.
We think it is critical that every facility performing MRI
imaging conduct drills and simulations so that all staff responding to an event
in the MRI suite are aware of the hazards and know how to properly respond in a
manner safe to all. That can be especially problematic in academic medical
centers where hew housestaff are continually rotating
in and out or in small community or rural facilities where locum tenens or
temporary staff are being used. In such circumstances, it is crucial that their
initial orientation to the facility include education about the hazards of the
MRI suite.
This is actually a good topic for a
FMEA (failure mode and effects analysis). You need to ask questions
about availability of MR-safe equipment in the MRI suite, what training
responding staff are likely to have had, how MRI staff are deployed to help
those responders avoid safety issues as they arrive, and others.
Some of our prior
columns on patient safety issues related to MRI:
References:
McClung H, Subramanyam R. Airway Emergencies and Safety in
Magnetic Resonance Imaging (MRI) Suite. APSF Newsletter 2020; 35(1): 10-11
February 2020
https://www.apsf.org/wp-content/uploads/newsletters/2020/3501/APSF3501.pdf
ASA (American Society of Anesthesiologists). Practice
advisory on anesthetic care for magnetic resonance imaging: an updated report
by the American Society of Anesthesiologists task force on anesthetic care for
magnetic resonance imaging. Anesthesiology 2015; 122: 495-520
https://anesthesiology.pubs.asahq.org/article.aspx?articleid=2091587
Print March
2020 Airway Emergencies in the MRI Suite
A year ago (see our March
5, 2019 Patient Safety Tip of the Week Infusion
Pump Problems) we did an extensive
column on safety issues related to infusion pumps. We hope youll go back to
that column to review our many recommendations.
But ISMP (Institute for Safe Medication Practices) has now
published its long awaited Guidelines for Optimizing Safe Implementation and
Use of Smart Infusion Pumps (ISMP
2020). We have no intention of replicating here the details of that
thorough, practical, up-to-date guideline. Youll have to read it yourselves.
The guideline also discusses dose error-reduction systems
(DERS), a feature of some smart pumps. Facility-customized DERS warn healthcare
providers about potential prescribing, calculation, and programming errors by
generating alerts intended to prevent infusions from being programmed outside
facility-established limits.
The section on building a drug library is especially
important. ISMP stresses independent double checking for the entry or
modification of each drug-specific element such as the
standardized drug name, applicable tall man lettering,
dosing units, concentration, dose limits, and associated clinical alerts.
ISMP recommends you establish care areas/profiles
that are tailored to specific patient populations, acuity, and/or patient
weight. But you must remember when transferring patients to a different
clinical unit to ensure the drug library care area/profile is appropriate for
the receiving unit.
Standardization is critical. That includes
standardizing the nomenclature of the drug name (including any TALL MAN LETTERING),
dose/dosing units (e.g., weight-based versus non-weight-based dosing; mcg/kg
versus mg/kg), and dose-rate (e.g., mg/kg/min versus mg/kg/hr)
in the drug library. It is also important to make sure this nomenclature is
consistent with the EHR, pharmacy infusion labels, and pharmacy IV workflow
systems. Standardizing and limiting the number of drug concentrations for
continuous and intermittent infusions in the drug library is also important.
Performance of double checks at certain points in the
clinical workflow is emphasized. When starting selected facility-defined
high-alert medication infusions and at additional facility-defined steps (e.g.,
change of shift/handoffs, change in the rate/dose of infusion, change in
bag/bottle/syringe) require that a double check be performed and documented to
verify the following before starting the infusion:
ISMP notes that technology (eg.
barcoding) is the preferred method for double checking most of these items but use
of a second practitioner is necessary to perform and document an independent
double check for line attachment.
It outlines considerations for differentiating infusion
pumps used to administer medications and fluids via different routes of administration
(e.g., IV, enteral, epidural).
One often overlooked point: Immediately discard all
continuous IV medications and epidural infusions (e.g., continuous infusions of
magnesium, neuromuscular blocking agents, and opioids) after discontinuation (i.e.,
do not leave hanging on an IV pole or at the bedside).
The ISMP guideline is aimed primarily at use of smart
infusion pumps in facilities. It does not delve into issues related to use of
infusion pumps in the home setting. We covered some of the latter issues in our
March 5, 2019 Patient Safety Tip of the
Week Infusion
Pump Problems. Especially
important in the home setting is one of our own critical warnings that applies to any sort of
infusion pump, smart or otherwise: never
put a potentially lethal amount of a medication in a bag/bottle/syringe, lest
some sort of error leads to infusion of the entire amount over too short a
period. We have done several columns in which fatal or near-fatal overdoses
of chemotherapy agents have been infused inadvertently over several hours when
they had been intended to infuse over several days (see our Patient Safety Tips
of the Week for September 11, 2007 Root
Cause Analysis of Chemotherapy Overdose and April 6, 2010 Cancer
Chemotherapy Accidents and
September 15, 2015 Another
Possible Good Use of a Checklist).
The ISMP guideline also includes multiple metrics
that should be monitored as part of your quality improvement program.
This ISMP guideline is a must-read for anyone who encounters
infusion pumps in their practice. It has a strong evidence base, is
well-referenced, and has many practical recommendations.
As above, we hope
youll also go back to our March
5, 2019 Patient Safety Tip of the Week Infusion
Pump Problems for our extensive
review of safety issues related to infusion pumps. The current ISMP guidelines also
dont go into detail about some of the special issues involved with PCA
(patient-controlled analgesia) pumps. Weve also included below a list of our
prior columns dealing with PCA issues.
Our prior columns related to infusion pump issues:
Other Patient Safety
Tips of the Week pertaining to opioid-induced respiratory depression and PCA
safety:
References:
ISMP (Institute for Safe Medication Practices). Guidelines
for Optimizing Safe Implementation and Use of Smart Infusion Pumps. ISMP 2020; February
10, 2020
https://www.ismp.org/guidelines/safe-implementation-and-use-smart-pumps
Print March 2020 ISMP Smart Infusion Pump
Guidelines
In 2014 AORN (Association of periOperative Registered Nurses) issued its revised
guidelines for surgical attire. There were several recommendations that met
with considerable controversy. Two of those were the requirement to wear a
bouffant rather than other head covering in the OR and to wear a garment that
covered the arms in the OR. A third recommendation was that personal clothing
should not be worn beneath scrubs. The Joint Commission and other regulatory
agencies began enforcing those recommendations. Surgeons and anesthesiologists
pushed back considerably, particularly about the head covering issue which
effectively banned the traditional surgical skull cap, citing the lack of a strong
evidence base for these practices. We discussed the disparities between the
AORN guidelines and those issued by the American College of Surgeons (ACS 2016) in our September 2016 What's New in the Patient Safety World
column American College of Surgeons Statement on
Operating Room Attire.
Taking all arguments into
consideration, AORN published updated guideline for surgical attire in July
2019 (AORN 2019), That new guidelines say no recommendation can be made for the
type of head covers worn in the semi-restricted and restricted areas. It also
says that no recommendation could be made regarding long sleeves, with the
exception that long sleeves should be used when performing skin antisepsis. And
it left the issue of personal clothing underneath scrubs up to individual
hospital policy.
Timely is a study done at the University of Alabama at
Birmingham (Wills
2020). Researchers there were able to track SSIs (surgical site infections)
during 3 separate time periods, one in which neither bouffants
nor surgical jackets were required, one during which long-sleeved surgical
jackets were mandated, and another during which both surgical jackets and bouffants were required. They looked at over 34,00
inpatient surgical cases over a 22-month study period. They found no
significant difference in the risk of SSI (1.01% vs 0.99% vs 0.83%), mortality
(1.83% vs 2.05% vs 1.92%), postoperative sepsis (6.60% vs 6.24% vs 6.54%), or
wound dehiscence (1.07% vs 0.84% vs 1.06%) between the 3 groups.
They estimated expenditure of more
than $300,000 annually on surgical jackets. Bouffants were found to be less expensive than surgical
skull caps. They conclude that surgical jackets and bouffants
are neither beneficial nor cost-effective in preventing SSIs and that institutions
should evaluate their own data to determine whether recommendations by outside
governing organizations are beneficial and cost-effective.
A thoughtful editorial (Dipp
Ramos 2020) accompanying the Wills paper reminds us that there are
other common-sense recommendations regarding attire:
The issue of transmitting pathogenic
bacteria is serious and such transmission can take place in both directions
(i.e. from hospital to home, or from
home to hospital). Mitchell and colleagues (Mitchell 2015) summarized the literature on the role of
apparel worn in healthcare settings in the acquisition and transmission of
healthcare-associated pathogens. In some countries all laundering of healthcare
workers uniforms is carried out in-house under regulated conditions. Laird et
al. (Laird 2018) discussed in detail the issue of domestic laundering of nurses
uniforms vs. hospital or commercial laundering and noted the following rules
that should be followed if healthcare attire is laundered at home:
In our February 2014 What's New in
the Patient Safety World column SHEAs New Recommendations for Hospital
Attire we discussed the
guidance statement from the Society Healthcare Epidemiology of America (SHEA)
for hospital attire outside the OR (Bearman
2014). The guidance
attempts to balance professional considerations against the potential risk of
transmission of pathogens to patients. It reviewed the laboratory evidence of
contamination of various pieces of healthcare workers attire with pathogens,
including multi-drug resistant pathogens. Though the authors made it clear that
the actual role of hospital attire in causing infections in patients was
unclear at the time, the guidance has recommendations that are based on practical,
theoretical and biologically plausible considerations to reduce the likelihood
of transmission of pathogens to patients.
One recommendation was bare below the elbows (BBE),
a recommendation used widely in Europe. This means healthcare workers should
wear short sleeves during patient contact and have no wristwatch, rings or
other jewelry below the elbows.
They also had recommendations regarding the traditional white
coats worn by healthcare workers. Workers should have at least 2 white coats
available and a convenient and economical way of laundering them. The
institution should provide onsite laundering at no cost or low cost when
possible. The institution should also provide coat hooks for healthcare workers
to remove their white coat (or other long-sleeved outerwear) prior to patient
contact. While they note that attire worn in patient contact should be
laundered after daily use, they recommend that white coats worn during patient
care should be laundered at a minimum once a week or when visibly soiled. While
they did not take a firm stance on whether attire should be laundered at home
or professionally, they did recommend that if attire is laundered at home a
hot-water wash cycle with bleach be used, followed by a cycle in the dryer.
The SHEA paper noted a huge gap between hospital attire
policies and their enforcement, with enforcement rates as low as 11%. Given the
number of healthcare workers we still see in scrubs in hospital cafeterias,
other parts of the hospital, and even shopping alongside us in our local
grocery stores, we know it will take much more than a policy to foster true
change.
Now is a good time to review your organizations policies on
attire in various areas. Yes, you may find that you can save some costs as
pointed out in the Willis paper. But we also suspect that, if you do an audit
of compliance with attire guidelines, youll find that your staff regularly
breaks the rules.
See our prior columns regarding hospital or surgical
attire:
References:
ACS (American College of Surgeons). Statement on Operating
Room Attire. Online August 4, 2016
https://www.facs.org/about-acs/statements/87-surgical-attire
AORN (Association of periOperative
Registered Nurses). Guidelines for perioperative practice: surgical attire.
AORN Facility Reference Center. July 2019
https://www.aornguidelines.org/guidelines/content?sectionid=173717946&view=book#221232892
Wills BW, Smith WR, Arguello AM, McGwin
G, Ghanem ES, Ponce BA. Association of Surgical Jacket and Bouffant Use With Surgical Site Infection Risk. JAMA Surg 2020; Published
online February 12, 2020
https://jamanetwork.com/journals/jamasurgery/fullarticle/2760957
Dipp Ramos R, Itani
KMF. Emotions, Common Sense, and Evidence in Operating Room Attire. JAMA Surg 2020; Published
online February 12, 2020
https://jamanetwork.com/journals/jamasurgery/article-abstract/2760951
Mitchell A, Spencer M, Edmiston C. Role of healthcare
apparel and other healthcare textiles in the transmission of pathogens: a
review of the literature. Journal of Hospital Infection 2015; 90(4): 285-292
https://www.journalofhospitalinfection.com/article/S0195-6701(15)00142-5/fulltext
Laird K, et al (2018) Domestic laundering of nurses
uniforms: what are the risks? Nursing Times 2018; 114: 2, 18-21
Bearman G, Bryant K, Leekha S, et
al. SHEA Expert Guidance. Healthcare Personnel Attire in Non-Operating-Room
Settings. Infect Control Hosp Epidemiol 2014; 35(2): 107-121 February 2014 electronically published
January 16, 2014
https://www.jstor.org/stable/10.1086/675066#metadata_info_tab_contents
Print March 2020 Ditch the Bouffant?
Weve done many
columns on patient safety issues related to behavioral health (see list at the
end of todays column). But virtually all our columns have focused on patients
in the hospital setting. We have largely neglected patient safety risks for
this population in the outpatient setting.
A case-control study in Sweden recently reported on patient-related factors associated with risk of preventable harm in first-line health care in 2 settings primary care and the emergency department Fernholm 2020
Some of our past columns on issues related to behavioral
health:
References:
https://bmcfampract.biomedcentral.com/track/pdf/10.1186/s12875-020-1087-4
https://qualitysafety.bmj.com/content/early/2020/01/27/bmjqs-2019-010110
Print March 2020 Risk Factor for Preventable
Harm: Psychiatric Diagnosis
Print March
2020 What's New in the Patient Safety World (full column)
Print March 2020 Airway Emergencies in the MRI
Suite
Print March 2020 ISMP Smart Infusion Pump
Guidelines
Print March 2020 Ditch the Bouffant?
Print March 2020 Risk Factor for Preventable
Harm: Psychiatric Diagnosis
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