Showing posts with label knowledge translation. Show all posts
Showing posts with label knowledge translation. Show all posts

Tuesday, January 7, 2014

"Practice Changers" - Every Foundation Needs a Threshold

The Gist:  Recognizing one's threshold to change practice exists as important part of both one's education as a trainee as well as one's longitudinal practice as a health care provider but is often neglected in medical education [1].  Beware of changing practice based on a single study/role model/source of information.  Increased emphasis and comfort in having one's practice challenged and unlearning ideas/behaviors is important and these habits should be established early through encouragement from training programs, self-reflection, and judicious use of Free Open Access Medical education (FOAM) - as detailed here.

Medicine exists as a persistently changing field with a historically slow uptake and, especially in EM, there is significant practice pattern variation - between individuals, groups, and regions.  Although the majority of medical education focuses on learning the basics, learning how and when to change one's practice is an aspect that feels unnatural and is probably easier cultivated in the beginning.  Below is a variation on the curve that is typically associated with the adoption of technology but may also reflect thresholds for change in medical practice, along with characteristics associated with each group.

The adoption of medical practice based on these group reflects varied thresholds for practice change.

The Case:  A trainee read a blogpost on use of metered-dose inhalers (MDIs) versus nebulizers in asthma.  The trainee quoted "hearing" of the equal efficacy of both to an attending and was met with resistance.  As a result, a dive into the primary literature resulted in a blog on the subject.  Although the practice of MDI with a spacer is supported by texts such as Tintinalli's and several Cochrane reviews, the trainee often meets resistance from attendings using MDI+spacer in the mild to moderate population.  Some attendings encourage this practice while others renounce it, stating that the patients expect the nebulizers as part of the expectation of coming to the ED, conclude MDIs take too long, or are unaware of the recommendations for MDIs despite evidence to the contrary[2].
  • What should the trainee do in this mix of opinion?  Go along with the flow? Spark conversations that may rub some senior clinicians the wrong way?  This is a common phenomenon both in medicine and even in this particular example, as evidenced by the call for knowledge translation on this subject by Osmond et al, who identified common barriers to adoption of this treatment modality for asthma in the ED [2].  When and how do we change our practice, especially as one is simultaneously laying the foundation to one's practice?
Interpreting primary literature is important and changing practice based on a study gets a cursory nod in Rosen's [3].  A future post will delve into this; however, for junior trainees, identifying one's threshold for practice change (where on the curve does one fall/wish to fall) and noting contributors to practice patterns (peer influence, podcasts/blogs, emulation) exists as tangible aspect in the knowledge translation spectrum.  An excellent article by Diner et al details specific ways in which residencies can assist trainees with this process, exemplified by this visual representation.

What residencies and clinical educators can do:
  • Empower residents to order/engage in different interventions or practices.  Experienced clinicians can act as safety and feasibility stops, but giving residents the support, encouragement, access to interventions (or omission of), and ability to think on their own or apply evidence is valuable.
  • Recognize individual thresholds to changing practice and communicate these thresholds with residents [1].  Expert clinicians have practices rooted in habit and experiential outcomes in addition to data, contesting these practices may be difficult, particularly for junior trainees.  Structuring discussions with faculty using examples of practitioners' thresholds for practice change could be valuable. 
  • Use journal club to discuss items beyond methodological rigor, but also as practice identifying what might be needed to change practice - within one's own settings or others: Research? Health care structure? Funds? Education?
  • Ask, "Why?" of the trainees, particularly the most junior trainees when going forth with routine plans in the ED.  Oftentimes the answer may be, "an attending told me to do it this way," or "that's what I thought we did here," or "I don't know." However, these all offer opportunities to demonstrate critical thinking apropos to the patient's clinical scenario.  Understanding the information upon which one builds the foundation of their practice may change one's threshold for change (Is it based on dogma? Irrelevant literature from the 1940's? Mandates?)
What is beholden upon the trainee:
  • Ask, "Why?" This may not always be the most appropriate way to frame the question (change the semantics to suit the situation), but inquire from supervising physicians about what makes them employ diagnostic or therapeutic modalities.  It's a way of engaging in balanced, non-aggressive dialogue about things one might do differently and offers a way to introduce and think about integrating a new practice or literature at the bedside (for either trainee or attending).  
  • Seek information that challenges one's own beliefs.  The alternative information may not always be accurate, but one does a disservice to oneself by neglecting the opposing viewpoint and selectively looking at information that supports our own biases.  This is part of what creates the "laggards" in the above graph.
  • Recognize hero idolatry.  We inevitably develop heroes and role models but despite deep respect and eagerness to please, it's important to maintain a skeptical eye towards what they preach and practice because they, too, are human.  For example, one can use innovative podcasters as a barometer for change, but read and think carefully about these ideas/interventions before adopting them or blindly quoting them.  The latter can also make a conversation about practice changing go awry - so use the best available evidence as a guide.
Something for everyone:
  • Develop a system for keeping up with new thoughts in medical practice - a method that allows one to filter the signal from the noise.  Information overload and the onerous task of attempting to "keep up" with evolving literature and ideas exist as a barrier to knowledge translation [1].
  • Understand aspects of practice influenced by external factors such as industry (pharmaceutical companies), administrators (how does the intervention affect the system?), personal incentives (RVUs), and mandates from supervisory agencies (ex: blood cultures in pneumonia).  For example, use of a nebulizer in an ED visit can increase the level charge for the visit making it an easy way to increase reimbursement for the visit.
  • Recognize one's own biases.  This requires introspection. For example, we often practice in a reactionary fashion - if we see an intervention "work" at the bedside, we may be more prone to neglect evidence to the contrary or safety data based on our experience.  This is more likely to gather momentum as the breadth of our experience increases throughout training and practice.
  • Understand the limitations of groupthink.  Most graduates of EM residency programs practice in the community setting and, in addition to resource barriers, there may be less flux or diversity of thought without monthly journal clubs and group debates.  Practitioners generally practice what they learn during training, which offers a single institution's perspective. Recognizing this as a limitation and seeking and expanded, diverse viewpoints is important.  
References:
1.  Diner BM, Carpenter CR, O’Connell T, et al. Graduate medical education and knowledge translation: role models, information pipelines, and practice change thresholds. Acad.Emerg.Med.2007;14(11):1008–14.
2.  Osmond MH, Gazarian M, Henry RL, Clifford TJ, Tetzlaff J. Barriers to metered-dose inhaler/spacer use in Canadian pediatric emergency departments: a national survey. Acad.Emerg.Med.2007;14(11):1106–13. 
3.  Young KD, Lewis RJ.  "Medical Literature and Evidence-Based Medicine."  Rosen's Emergency Medicine. 7th ed. p2517.

Monday, June 24, 2013

The FOAM Forecast - Better Than The Weather Guy/Gal

The Gist:  Old news in the Free Open Access Medical Education (FOAM) world often predates alterations in guidelines and bedside practice.  Thus, while we may regurgitate things solely for test taking purposes or to sate the local practice patterns, it may behoove us to acquaint ourselves with changing schools of thoughts prior to these changes trickling down in standard ways.  FOAM can serve as a means of preconditioning one's way of thinking and actions to mitigate the knowledge translation window.

The example: I recently completed my second iteration of ACLS testing with the 2010 guidelines and I encountered the following:
LBBB is a STEMI equivalent?  I was told this by an attending as a third year medical student but, through Twitter, I recalled recently noting that the 2013 AHA Guidelines state that new or presumed new LBBB, in isolation, is not an indication for a patient to proceed directly to PCI or thrombolysis (I.e. no other concerning features on ECG or sick patient status).   As I marked up my algorithm, wandering whether this distinction had clinically relevance, I recalled the following case from nearly a year prior...

The Case:  A 48 year old obese male presented to the Janus General ED with some new chest pain and mild dyspnea at 0300.  His vital signs were within normal limits and he appeared uncomfortable and anxious but in no distress.  A 12-lead ECG demonstrated a LBBB that failed to meet any of the Sgarbossa criteria.  My supervising physician instructed me to page the cardiology fellow to see the patient and push for PCI after my database search failed to produce an old ECG to look for a prior LBBB.  The cardiology fellow came in and, after seeing the ECG and the patient, stated he would take him to PCI later, perhaps the following day.  The patient had no bump in troponin and ultimately left the hospital without a diagnosis of an MI.
  • Interestingly just one week prior, I watched this brief tutorial from Dr. Amal Mattu on LBBB and MI, one of several times I'd heard this same trope on podcasts.  I followed the directives and waited until after shift to check into LBBB and MI a little further, knowing I shouldn't blindly accept something I watched on the internet.
How FOAM forecasted the guidelines and provided updated education: 
  • 2011an EMCrit episode featured a discussion with Dr. Stephen Smith regarding reading STEMI on  ECGs with an LBBB, introducing the ST/S ratio 
    • A ratio of the amplitude of the ST segment to the S wave >-0.25 is suggestive of ischemia/STEMI and increases the sensitivity of the Sgarbossa criteria (full text article), awaiting further validation 
  • July 2012: Dr. Mattu foretold the changing guidelines in 20 minute video on LBBB and MI.
  • December 2012:  EMS 12-lead Blog educates EMS providers on the removal of LBBB as a STEMI equivalent in the 2013 AHA guidelines
  • June 2013: Dr. Mattu's ECG tutorial of the week re-emphasized the ability to read MI on an ECG with a LBBB.   
These created a reading list on LBBB and MI - reinforcing life-long learning skills of reading:
  • Kontos et al
    • n=401 patients with LBBB undergoing AMI rule out
    • No difference in incidence of MIs between chronic and new LBBB
    • Concordant ST changes (n=14) were the most important predictor of AMI (OR 17, 95% CI 3.4-81, P < .001
    Chang et al
    • Observational cohort of ED patients with ACS symptoms
    • No difference in the rate of AMI between the 3 groups: 
      • new or presumed new LBBB - 7.3% (RR 1.1; 95% CI, 0.47-2.84)
      • old LBBB - 5.2% (RR, 0.84; 95% CI, 0.41-1.69)
      • no LBBB -6.1% 
    Jain et al
    • Retrospective single-center analysis. N =36 patients with new/presumed new LBBB and ACS symptoms (~1-2% of AMI population in this system), 12 diagnosed with AMI
    • 30/36 underwent emergent cath
    • Sgarbossa criteria performed poorly in terms of sensitivity (Score of at least 5, sensitivity ~14%)
    Neeland et al - Excellent review of LBBBs.
How may this translate into clinical impact?  
  • Cath lab activation.  Garvey et al demonstrated that among 14 cath centers, 72% of cancellations were due to ECG reinterpretations.
    • Prehospital setting: As noted in the EMS 12-lead Blog, prehospital ECGs and providers can directly activate the cath lab.  Thus, the use of the modified Sgarbossa criteria and knowledge that a new LBBB alone does not necessarily qualify a patient for cath lab activation. 
    • ED: Improve the ways in which one can read an MI on a LBBB on an ECG (modified Sgarbossa with ST/S ratio)
  • Potentially spare patient unnecessary emergent revascularization. 
  • Ease communication with consultants.  Many cardiologists (such as the one in the above case) have stopped taking patients to PCI based solely on a new LBBB.  
  • So, it's not really about the LBBB, rather the diffusion of knowledge.  Training courses such as ACLS are updated every five years. Thus, if a provider takes a course towards the end of that five years, it may be a few years before they provider is updated.  It often takes even longer to unlearn practices, especially in non-teaching centers. Sites such as TheSGEM and RuralDoctors.net specifically target knowledge translation that may allow for more broad information sharing/collaboration and, perhaps, ultimately improved patient care.
Limitations - There's a fine balance in being an early adopter, a cautious practitioner, a diplomat, a pot stirrer, and a skilled test taker.  Preparing for shifts in thought/practice, "dogmalysis" (word credit to Dr. Cliff Reid) through digestible bits of FOAM, may at least induce greater discussion and consideration in order to achieve this balance.

Thursday, November 8, 2012

(Don't) Mind The Gap

The Gist:  Despite our best intentions and with regard to the combined literature, research, and clinical experience, we practice dated medicine.  Information disseminates and is adopted by individuals instantaneously in many other aspects of life.  Public discourse resulting from this information sharing, applied in medicine (Knowledge Translation) has the potential to improve health care...and FOAM (Free Open Access Meducation) is a promising means to tackle this problem. As a trainee, I think it's important to build solid habits and integrate this way of thinking/tackling medical learning early on.

What's the problem?  In an epidemiology class for my Master of Public Health, I was shocked when my professor declared that it often took a decade, if not more, before evidence was practiced by clinicians.  But we're so educated!
  • Gaps between knowledge/information/experience and clinical practice (1).  Medical and health care research is booming.  Things change quickly and it's difficult to stay up to date, especially if your specialty involves every organ system and environment imaginable.  What is this research worth if we can't integrate it in clinical practice to benefit our present patients?
  • Physicians practice despite guidelines or evidence favoring a different outcome (2).  We have collections and evaluations of the best evidence from the Cochrane Library and BestBets
Knowledge translation (KT): Knowledge translation is defined as the exchange, synthesis and ethically sound application of knowledge—within a complex system of interactions among researchers and users—to accelerate the capture of the benefits of research… through improved health, more effective services and products, and a strengthened health care system.”  (1)

KT tutorials:
Goals of KT:
  • Changing behavior
  • Changing health outcomes
  • Achieving both of the above outcomes in an ethical, non-coercive way.
How can FOAM improve KT?
  • Can precede national guidelines.
  • Easily accessible from nearly anywhere
    • TheNNT has a host of evidence-based reviews on frequently encountered topics.  These are frequently revised.
    • MDCalc allows one to easily calculate a score like PESI or CHADS2-VASC score in seconds.
    • Many apps for smart phones and tablets have these built in calculators as well (Medscape under "calculators" and other ones that are paid apps).
  • Asynchronous updates in literature and research at no charge to the consumer.  Continuing Medical Education (CME) can be expensive and time consuming but blogs, podcasts, and various RSS feeds allow one to access information when, where, and in the quantity one desires (I prefer mine at the gym, in the car, or during anything that involves waiting).
    • SMARTEM is a podcast that takes deep dives through the literature to assess and interpret the evidence behind various clinical practices.
    • The Skeptics Guide to Emergency Medicine (The SGEM) has a free podcast in which they address specific articles or guidelines.
  • Bridging academic and community settings, "flattening the world" (to borrow Thomas Friedman's analogy for technology and knowledge/goods dissemination).  Knowledge and experience varies across the regions (ex: see the Prehospital and Retrieval Medicine multinational podcast on procedural sedation).
    • A group of FOAM masters recently began a "Rural Masterclass," to extend and involve rural physicians in a relevant and current continuing learning endeavor.
  • Dialogue.   Individuals in the medicine field frequently debate and discuss guidelines, criteria, and "standards of care" on Twitter, blogs, and podcasts.  This frequently engenders further examination of preconceptions, understandings, and barriers to implementation of interventions/therapies.
    • At times it seems there's peer pressure to conform to how others are doing things, even if it's not necessarily the most appropriate intervention (example: prescribing antibiotics for acute sinusitis in otherwise healthy patients or failing to prescribe steroids in acute asthma exacerbations).  Discourse between professionals can function as a support system and allow individuals to troubleshoot and benefit from each others experiences in implementation.
Is there a downside to KT?
  • Medicine is not a unilateral encounter but a dialogue and decision making process with a patient. Some individuals worry that emphasis on evidence and guidelines have the potential to overshadow the individual nature of clinical encounters (4).  Properly understood, however, KT is not a trendy guise for CMS guidelines or core measures (which are designed to be coercive).  The essence of KT is to produce better health outcomes based on all available evidence.
  • Implementation is not homogenous for each system or practice.  KT involves the attitudes, knowledge base, and infrastructure of complex systems.  In fact, there's an entire journal dedicated to implementing evidence (Implementation Science).  It's pretty daunting work, but again, the FOAM community may allow for a shared learning experience in success and hardships of implementation of current knowledge.
  • Creating and disseminating guidelines do not necessarily result influence practice at the bedside.  Effective KT is the product of integration into a clinician's cognitive approach of each situation, which is not an insignificant endeavor (5). 
References
1.  Davis D et atl. The case for knowledge translation: shortening the journey from evidence to effect BMJ 2003; 327 
2.  Lang E, Wyer P, Haynes R. Knowledge translation: closing the evidence-to-practice gap Ann Emerg Med. 2007 Mar;49(3):355-63. Epub 2006 Nov 3 (full text)
3.   Straus S, Tetroe J, Graham I.  Defining Knowledge Translation. CMAJ August 4, 2009 vol. 181 no. 3-4 Full Text

5.  Green L and Siefert C.  Translation of Research Into Practice: Why We Can’t “Just Do It” J Am Board Fam Medvol. 18 no. 6541-545