Showing posts with label cardiac_arrest. Show all posts
Showing posts with label cardiac_arrest. Show all posts

Thursday, November 5, 2015

Team-Based EMS


Team-Based EMS
By Alan Perry
November 4, 2015

Introduction
What do you want to call it? “High Performance EMS”, “Pit Crew EMS”, “Code Team”, “insert cute name here”, it really doesn’t matter, these terms all convey the same meaning; an organized and efficient approach to patient care. Regardless of the name, it won’t just happen without some effort on the part of the system and the providers. I would like to explore some ways of dissecting it from a team and teamwork perspective. I am going to discuss the ideas and practice in this article in three phases; Understanding the idea and how to visualize it, Defining the priorities of scene and team management, and Illustrating application of the idea when applied to any given crew configuration. I want to present it this way so the material can be presented and absorbed in a way that builds from concept to technical skill, with the final product being integrated into a flexible and effective system.



Concept

Why a team approach is needed
Cardiac arrest treatment has become much more technical and precise; the data behind modern resuscitation tools and skills is solid and still building. Sudden Cardiac Arrest is one of the most studied pre-hospital medical emergencies. Building a solid team approach will allow your organization to maximize the use of your team, and the resources available to them, to improve patient outcomes.

The Coach and Players
All teams need a coach and players that are familiar with the game and the responsibilities and capabilities of their team mates. An EMS/Fire crew is no different. Coaches are strategist, know the strengths and weaknesses of their team, the disease process and the tools and tactics required to succeed.  Players know their area of responsibility and what performance goals must be met. Both are committed to the team’s success and a good outcome for the patient.

Planning to win
When working a code we should have a specific goal in mind, in the past we would be happy with simply regaining a pulse, we resigned ourselves to the likelihood that most would not survive, that is changing. It is becoming increasingly likely with our new tools and tactics, that victims will survive, not only survive, but remain neurologically intact and live normal lives. In some places survival rates from witnessed cardiac arrest are near 50%, clearly they play to win. Planning to win means that you are willing to commit your team to training with the tools and tactics that are proven to work, it will require going beyond simply knowing what to do, you must bring all the elements together multiple times and in multiple scenarios to build your teams confidence and competence. You will know you are there when the team can function calmly, flawlessly and smoothly in even the most difficult circumstance.

Building your play-book
To reach the level of play required for an elite EMS team, we will have to improve the way we train, deploy, act and recover. Training is not just something we do to deploy a new device, tactic or skill, it is something we must do constantly so the team can build routines, muscle memory and fine-tuned personal interactions. Deployment of new tools, tactics and skills must be preceded by training, reinforced and evaluated, to determine if the material has been delivered and retained. When we respond and act, we must practice that team-based approach that brings all of the technology and skill we possess into play to produce the best possible outcome for the patient. When we recover from these calls we must extol both the good and bad when we debrief, learning from both and discovering new ways to improve.

Technicalities

Understanding the Priorities during Cardiac Arrest

#1 Safety:        
From dispatch through recovery, you cannot help if you don’t get there or you or your crew is injured.

#2 CPR:          
By-stander CPR followed seamlessly by high quality uninterrupted CPR by EMS is proven to be the most beneficial action for patients in sudden cardiac arrest.

#3 Airway
Controlling the airway includes opening and sealing the airway with an ITD to improve circulation in cardiac arrest with CPR

#4 Defibrillation:
Cardiac arrest from ventricular fibrillation can be resolved quickly with counter shocks delivered as early as possible.

#5 Ventilation
Not a priority during the first 2 minutes, but necessary beyond that, delivered with BVM and capnography to guide patient care.

#6 IV Access & pharmacology
Also not an initial priority, establishes a route for IV fluids and pharmacological agents if indicated.

#7 Rule outs (H’s & T’s)
Finding and treating the cause of the arrest is at least as important as reversing the arrest to prevent re-arrest.

#8 Post care
The jobs not over after the patient regains a pulse; perform a 12-lead, employ pharmacology and electrical therapy to manage this very unstable patient, employ therapeutic hypothermia if permitted and indicated.

Team Roster
Safety-                      Individual (and entire team); senior officer, maintains scene security and safety, serves as patient and family advocate.
Coach-                   Team leader; senior paramedic or EMS supervisor – directs code after determining nature of call and indications for resuscitation.
Compression team- At least two persons to alternate compressing the chest wall, initially may be an individual until additional resources arrive, will alternate with airway team every 2 minutes.
Airway team-           At least two persons to manage airway and ventilations, initially can be an individual who secures airway seal with ITD until additional resources arrive, will alternate with Compression team every 2 minutes.
Defibrillator-          Specialist; exposes patient and applies defib pads, charges defibrillator, applies electrical therapy on command from lead once patient is cleared, connect capnography lead, applies additional electrodes and non-invasive monitoring tools when possible and acquires 12-lead if indicated.
IV access-                 Specialist; set up and establishes IO access, administers fluids and drugs PRN on direction of team lead. Assist with obtaining glucometry.
Pharmacology-        Specialist (ALS); assists team lead, obtains, draws, constitutes indicated medications, mixes drips, assist IV position with administration.

Integration
A model for initial team assignments

Position assignments are a tool that can assist your team in accomplishing complex tasks. In a work environment that frequently includes overtime and swing assignments with apparatus and crews we may not be familiar with. Standardized position assignments can help personnel and the organization achieve a higher level of performance in spite of staffing issues, and more complex treatment goals. One goal is to minimize the shift/station/apparatus variability that occurs as a normal process when crews find what works for them. This is fine if you know you will always be working with the same people on the same piece of equipment, but that seems to be the exception now rather than the norm. Another goal is developing a system for deploying and delivering more advanced tools and skills consistently and effectively. Consider that the practice of team-based EMS is already promoting teamwork and assigned roles in dealing with critical medical events like cardiac arrest. Because of the advantages, it seems reasonable that we could start practicing that way on every call to improve our performance and patient outcomes. We already apply these pre-assigned roles for firefighting activities, it should not be much of a stretch to apply it to EMS as well. Below is an outline model of how it might look, again it does not replace good decision making and must remain adaptable.

The Model Assignments for initial interventions
Alpha              (Officer)
•           Scene safety/Command/Communications with EDC
•           Patient/Family advocate
•           Assist with collecting patient information and history
•           Assist with staging equipment and manpower
•           Assume #2 CPR position during resuscitation if needed


Bravo               (Jumpseat)
            Lead EMS provider- first to patient – marks patient contact
•         Deploys with Tablet and monitor
•         Assesses patient and determines need for resuscitation
•         Primary patient assessment/interview/determine nature of call
•         Directs care of patient by crew
•         Documents interventions with accurate time stamps
•         Develops and communicates treatment plan to team
•         ALS performs procedures outside others scope of practice
•         Communicates with patient’s family and med control PRN

Charlie             (Jump seat)
•         Forcible entry if needed
•         Deploys with blue & red bags
•         Assumes #1 compressor position during resuscitation
•         Obtains patient vitals & physical exam
•         Procedures as directed by lead within scope of practice

Delta                (Driver)           
•         Deploys with drug & IV boxes
•         Assumes control of airway during resuscitation
•         Secure scene for incoming resources
•         Stage patient moving equipment
•         Procedures as directed by lead within scope of practice

ALS                 (any position)
•         If an ALS provider is assigned to a position other that Bravo/lead EMS provider, they will assume the role of the Bravo/lead EMS provider if the patient is presumed, or found to be in need of, ALS care and/or evaluation.




Summary       
Emergency medical services are increasingly driven by outcomes and the application of tools and skills with proven benefits. Delivery of these devices and skills requires greater organization and communication to produce favorable outcomes. The adoption of formal crew assignments and a team-based approach to EMS can produce more efficient and effective care and thereby improved outcomes. It is a new way of thinking for most but not one we are unfamiliar with.  Our daily activities, finances, team sports, card games and hunting all require strategy and tactics to produce a successful outcome. We can apply teamwork, new tactics and technology to deliver our services to save more lives and improve quality of life for survivors.


Ready? Set? Practice!!

Friday, January 30, 2015

Salvation or Salesmanship?

Salvation or Salesmanship? A closer look at Impedance Threshold Devices.

By Alan Perry
January 30, 2015


Cardiac arrest science and outcomes have been changing at a rapid pace. New procedures and equipment have radically changed the way we approach these cases and have significantly improved the outcomes for victims in some locales. Techniques and equipment that are proven to be effective require training for the pre-hospital provider to apply them correctly and consistently. The Impedance Threshold Device (ITD) is one such tool. Although the device is deceptively simple to use, its basic function and correct application are not well understood by providers who have simply been instructed when and where to use it. ITD’s are not universally accepted as being effective or safe. Questions have been raised by independent researchers and the Federal Government about the validity of the claims of the manufactures supported research, implying that errors in study design, data collection or bias may be involved. It would seem that the ancient caveat of “buyer beware” still applies.

The basic selling point for these devices is that in the setting of cardiac arrest, the use of the ITD improves the return of blood the heart, thereby improving preload and stoke volume induced by effective CPR while reducing ICP. The mechanics of this are fairly simple; once the ITD is in place passive inspiration ceases due to the effective occlusion of the airway by the ITD, When the chest is compressed effectively the pressure expels blood from the heart and air from the lungs, when the chest recoils air cannot return to the lungs, this produces negative pressure within the chest wall which can assist blood in returning to the heart. In effect it sacrifices respiration for circulation. This would seem to be quite effective in a previously well oxygenated patient since the circulating blood presumably would still be carrying enough oxygen to postpone permanent damage to organs.

Questions about the research on, and use of ITD’s, are mounting and have merit. The Food and Drug Administration (FDA), in a draft document published May 6, 2014 to its Circulatory System Devices Advisory Panel posed questions about the research data, safety and effectiveness of the device. Among these questions some fundamental problems with the research were cited with the statement that the research does not support the assertion of improved survival if used alone with standard Cardiopulmonary resuscitation (CPR). The FDA’s Data Safety Monitoring Board (DSMB) found that the studies were not effectively blinded, that they excluded non-cardiac etiologies, and Emergency Medical Services (EMS) providers were not blinded at all. Additionally, the document asserted that the development of pulmonary edema was 30% more likely with ITD use, and that the manufactures should consider labeling to further define which patients are appropriate candidates.

Before we jump to any conclusions about ITD’s, whether they are effective, or just the latest gadget we have been sucked into buying, I think we should examine and consider what we know now. If you think it through, considering the evidence, what we know about the pathophysiology of cardiac arrest and the various co-morbidities, I think it can still be an effective tool if we consider the totality of our patient’s presentation and history and become more selective in the application of this tool. In the setting of a witnessed cardiac arrest, presumably a myocardial infarction or arrhythmia, the selection of the ITD to improve the effectiveness of CPR would seem to be beneficial, provided effective compressions and airway management are also present. Conversely, it would seem that a victim of cardiac arrest secondary to some other event such as a drug overdose or pulmonary edema which was primarily respiratory in nature would more likely benefit from aggressive ventilation with effective CPR to correct the hypoxia that precipitated the event.

Unfortunately, the ITD is not currently marketed or deployed with these considerations. I believe manufactures must be more diligent in conducting/supporting research that promotes patient safety over sales. The government regulators must be more diligent in reviewing the research and outcomes. Those responsible for applying new technology, devices, practices, protocol and training within the local jurisdiction must do their own research on them as well. We are taught from an early age to hear both sides of an argument before reaching a decision, to beware of products that sound to “too good to be true”. A thorough evaluation process that involves the providers who will be using these devices as well as a training program that imparts an appropriate level of understanding of the pathophysiology and mechanics of the devices is a must.

A more refined set of indications, contra-indications, and a better understanding of the pathophysiology involved by providers, as well as better refined protocols should led to more successes when using these devices and fewer complications for patients. I offer this example for consideration:



To bring it home, we have to ask ourselves about new things that are presented to us, evaluate them carefully and validate any claims made by any manufacturer or salesman. Be aware that shrewd companies may suppress negative information about their products or services on the internet, so information from this source may be unreliable or downright misleading. 


Be safe and do your research,
Alan





References:

Food and Drug administration, Data Safety Monitoring Board website:

A trial of an impedance threshold device

American Heart Association