Cardiac Emergencies Running the Code November 2013 CE Condell Medical Center EMS System Site Code: 107200E-1213 Prepared by: Sharon Hopkins, RN, BSN, EMT-P Rev 11.18.13 1 Objectives Upon successful completion of this module, the EMS provider will be able to: Discuss cardiac rhythms that may be too fast, too slow, or too bad. Describe signs and symptoms of impaired cardiac output related to a variety of cardiac rhythms. Review properties of medications used in cardiac situations in Region X SOP’s. Review identification of cardiac rhythms 2 Objectives cont’d Review Region X SOP treatment and interventions for a variety of cardiac rhythms Actively participate in case scenario discussion. Actively participate in a mock code situation including medication preparation. Successfully complete the post quiz with a score of 80% or better. 3 Lethal Cardiac Rhythms Rhythms that cannot sustain perfusion and therefore life Evaluate rhythms: Too slow Too fast Too bad What does the patient look like? How is the patient handling that rhythm? 4 Signs & Symptoms Signs and symptoms generated based on status of perfusion Cardiac output (CO) = stroke volume x heart rate Cardiac output – total volume of blood pumped out of heart in one minute Stroke volume – amount of blood pumped out of ventricle with each contraction Heart rate – pulse rate over one minute 5 Symptoms Impaired Cardiac Output Anxiety Chest pain Shortness of breath Lightheadedness Near syncope “Something is not right” 6 Signs Impaired Cardiac Output Dyspnea Diaphoresis Hypotension Cool, clammy skin Cyanosis Syncopal episode Decreased level of consciousness 7 Cardiac Medications in SOP You are responsible for knowing Why a medication would be used When the medication would be used How much to administer What route to use for the medication What side effects to monitor for How to document the medication given 8 6 Rights of Medication Administration These are checked each & every time you administer medications Right patient Right time Right medication – always triple checked Right dosage Right route Right documentation You need to know “ml” when drawing up the syringe volume; you need “mg” when documenting 9 Epinephrine Trade name - Adrenaline® Sympathomimetic - Mimics sympathetic nervous system (Fight or Flight) Increases heart rate Increases automaticity Ability to initiate an impulse Increases contractile forces Stimulates alpha and beta receptors Stimulates vasoconstriction Stimulates the heart Causes bronchodilation 10 Epinephrine cont’d Used as initial drug in cardiac arrest First drug used following defibrillation Improves perfusion to the heart and brain Dose is 1 mg IVP/IO Relatively short acting so dose repeated every 3 - 5 minutes No max 11 Amiodarone Trade name Cordarone® Antidysrhythmic Relaxes vascular smooth muscle Decreases peripheral vascular resistance Increase coronary blood flow 12 Amiodarone cont’d Used in variety of ventricular irritability Stable monomorphic VT after failure to respond to Adenosine Stable polymorphic wide complex VT Unstable VT not responsive to cardioversion VF/Pulseless VT not responsive to defibrillation and Epinephrine 13 Amiodarone cont’d Dosing Patient with pulse 150 mg diluted in 100 ml D5W IVPB run over 10 minutes Patient without pulse Initial dose 300 mg diluted with 20 ml NS or D5W Given rapid IVP/IO May be repeated in 5 minutes at 150 mg IVP/IO if needed Watch out in patients with pulses Causes hypotension –must be administered slowly!!! 14 Atropine Parasympatholytic blocker Blocks parasympathetic nervous system Increases heart rate at SA node Decreases degree of block at AV node Anticholinergic Decreases secretions 15 Atropine cont’d Administered only if patient is symptomatic What is the level of consciousness? First indicator to change when perfusion altered What is the blood pressure? Last indicator to change when perfusion altered Only dosing used is 0.5 mg rapid IVP/IO May be repeated every 5 minutes Max dose is 3 mg Should be in process of applying TCP as first dose is being delivered 16 Atropine cont’d Side effects to expect Dry mouth Dilated pupils Tachycardia Ringing in the ears Did you know… To transplant a heart, the vagus nerve is cut This patient will no longer respond to Atropine Immediately apply the TCP 17 Atropine cont’d Why don’t we use Atropine in the pediatric patient with bradycardia??? Peds brady usually result of insult to the respiratory system and not due to a diseased heart Most often need to fix the airway to fix the heart rate Why give the peds patient Atropine as a premed in drug assisted intubation??? Peds patient sensitive to reflexively brady down with stimulation of the airway 18 Dopamine Trade name Intropin® Sympathomimetic Mimics sympathetic system Used to treat hemodynamically significant hypotension in absence of fluid deficit Effects dosage dependent Used to increase/improve contractile force to improve cardiac output Minimal effect on increasing heart rate 19 Dopamine cont’d Medium dose 5 – 20 mcg/kg/min Recommend EMS to start at 5 mcg/kg/min Can increase dosing if needed Wait 5 minutes to see effects of medication Watch for extravasation Dumps a concentrated dose in one area Causes excessive vasoconstriction that can lead to tissue sloughing 20 Dopamine cont’d How fast do you drip in Dopamine? Chart listed in SOP’s Ranges provided from 5 – 20 mcg/kg/min Quick method for drip rate Calculate patient’s weight in pounds Take first 2 numbers of 3 digit weight Drop 2 points and have starting rate for drip Example: 160 pound patient Take 16, minus 2; start drip at 14 minidrips/min 21 Adenosine Trade name Adenocard® Antidysrhythmic Slows conduction time thru AV node No effect on contractility Blocks reentry pathways thru AV node Decreases heart rate at SA node 22 Adenosine cont’d Used to treat relatively stable tachydysrhythmias Stable narrow complex SVT Stable monomorphic VT On the suspicion that this might be SVT with aberrancy Aberrancy means conduction will take another route thru the conduction system Any time there is a detour in conduction, the complexes widen 23 Adenosine cont’d Caution: May cause an increase in heart rate for the patient with WPW (Wolff Parkinson White) syndrome Medication blocks AV node conduction but not accessory pathways Medication must be administered as quickly as possible Half-life is only 10 seconds Start IV in AC, preferably right 24 Adenosine cont’d Dosing Initial is 6 mg followed immediately with 20 ml NS flush Warn patient they may feel “funny” for few minutes Monitor for chest pressure, hot feeling, shortness of breath After 1-2 minutes, repeat dosage, if needed, 12 mg immediately followed with 20 ml NS flush Run strips for documentation while administering medication 25 Verapamil Trade name Calan® Calcium channel blocker Slows AV conduction Moderately decreases contractility and peripheral vascular resistance (afterload) Onset 3- 5 minutes 26 Verapamil cont’d First line medication for relatively stable atrial fibrillation and atrial flutter Used as backup to Adenosine resistant stable narrow complex tachycardia Should NEVER be administered in the presence of a ventricular dysrhythmia May precipitate hemodynamic deterioration and lead into ventricular fibrillation DO NOT USE in WPW May cause ventricular fibrillation 27 Verapamil cont’d Dosing 5 mg IVP SLOWLY over 2 minutes Watch for hypotension May repeat dosage in 15 minutes if necessary Most common side effect Hypotension – watch patient carefully NEVER administer in VT Common medication used at home for control of hypertension Reduces afterload – pressure heart pumps against 28 Additional Medication Support For critical interventions, additional medication s may be added Benzodiazepines Opioid narcotics To be used to relax, sedate, and make patients more comfortable The above can cause respiratory depression Monitor airway when using these meds 29 Valium® Generic name Diazepam A benzodiazepine Relatively short acting sedative, hypnotic, and anticonvulsant Induces amnesia Onset 2 - 3 minutes IVP route Peak effects 3 – 5 minutes Duration 4 - 6 hours Longer acting than Versed 30 Valium® cont’d In cardiac setting, used for to help “take the edge off” if using TCP Dosage 2 mg IVP/IO over 2 minutes May repeat 2 mg every 2 minutes to max of 10 mg as needed Watch for respiratory depression For pain control, need to add Fentanyl 31 Valium® cont’d Use Longer acting sedation for use of the TCP To prevent shivering when cooling a patient with heat stroke Back up to Versed when Versed ® dose has been maxed in behavioral emergencies 32 Versed® Generic is Midazolam A benzodiazepine Useful as a short acting sedative Onset – fast – 1 - 2 minutes Peak 3 – 5 minutes Duration – 15 – 80 minutes; relatively short 33 Versed ® cont’d Dosage 2 mg IVP/IO every 2 minutes titrated Max 10 mg Used: Drug Assisted Intubation – post sedation Sedation for synchronized cardioversion First drug for seizure control IN route avoids exposure to needle risk Behavioral emergency IN route avoids exposure to needle risk 34 Fentanyl Synthetic opioid narcotic – analgesic Similar to morphine but quicker and shorter in duration Less hemodynamic changes than morphine Dosing 0.5 mcg/kg IVP/IO/IN over 2 minutes IN used if no IV access Onset 1 – 2 minutes Peak effect 3 – 5 minutes Duration 30 -60 minutes 35 Rhythm Strip ID and Intervention What’s this rhythm and how do you decide on intervention? SVT Narrow QRS with rapid (>100 ) ventricular response; no discernable rounded P waves First identify & find a T wave; if no “bumps/waves” left over to be P waves then rhythm is not sinus Treatment based on stability 36 Tachycardia Decision Tree Using words “bradycardia” and “tachycardia” just describe a rate Does not indicate what the rhythm is! Critical thinking skills with tachycardia Your assessment and EKG interpretation will drive the decision over which pathway to follow for intervention 37 Decision Tree cont’d 1st question – Is patient stable or unstable? A tachycardic patient should have some signs and symptoms You would with a sinus tachycardia!!! Having symptoms DOES NOT make a patient unstable; just symptomatic If unstable, patient requires immediate and more aggressive intervention Consider synchronized cardioversion 38 Determining Stability 2 components will quickly provide this answer Check level of consciousness First thing to change when perfusion drops How well does patient communicate when spoken to? Palpate a radial pulse If you can palpate a radial pulse, blood pressure is present to perfuse to a distant part of the body Blood pressure last indicator to drop when compensation has been exhausted Stability must be measured for each individual and may be unique to them 39 Decision Tree cont’d If patient relatively stable, can take more time for conservative intervention If patient relatively stable, determine width of QRS If narrow, consider SVT If wide QRS, need to determine if monomorphic or polymorphic Monomorphic – complexes relatively alike; complexes could stack one on top of each other Polymorphic – more disorganization 40 Rhythm Strip ID and Intervention What’s this rhythm and how do you decide on intervention? Monomorphic VT Wide QRS, no normal P wave with PR intervals Wide complex is VT until proven otherwise Treatment depends on type of VT (monomorphic vs polymorphic) and patient stability 41 Rhythm Strip ID and Intervention What is this rhythm and what do you do? Torsades de Pointes If pulseless, treat like VF and defibrillate If alive, assess stability If stable treat with Amiodarone If unstable cardiovert 42 Case Scenario #1 Group Discussion Patient 70 y/o who is pale and feeling weak; has had episodes of diarrhea today Hx: throat cancer, hypertension, PEG tube VS: B/P 104/50; P 78; R 18; SpO2 98% Monitor applied due to patient’s age What is your interpretation of the monitor? 43 Case Scenario #1 Patient had no cardiac complaints at all Rhythm is Sinus When you note ST elevation, what is your next action? Obtain a 12 lead EKG Can you determine presence /absence of acute MI based on 1 lead view? No; you can be suspicious though 44 Case Scenario #1 EMS 12 lead – what is your interpretation? ST elevation II, III, aVF 45 Case Scenario #1 12 lead taken upon ED arrival – what do you think? No ST elevation 46 Case Scenario #1 Good example why serial EKG’s are important Patient was taken to cath lab based on EMS 12 lead EKG Patient had 99% blockage of RAD coronary artery Blockage opened with stent Patient did well 47 Active Case Scenario Practice For the following cases, respond as if the call just came in Do what you would do on a real call Working in groups, progress through the call and perform as many of the skills as possible Take time to discuss and critique the call before moving on Lessons learned are valuable 48 Case Scenario #2 EMS responds to a 56 year old found unresponsive in the locker room of a gym Patient appears unconscious What are your initial assessment steps? Check responsiveness – no response Check for signs of life; presence of breathing Agonal breathing Check carotid pulse for 5 – 10 seconds Carotid pulse of 30/minute; no radial pulse 49 Case Scenario #2 What early intervention is necessary for the agonal breathing? Supportive ventilations BVM 1 breath every 5 - 6 seconds If DAI is considered, what medications would be used? Etomidate 0.3 mg/kg IVP/IO (maximum 20 mg) Post-intubation sedation Versed 2 mg IVP/IO every 2 minutes titrated to effect; max 20 mg 50 Case Scenario #2 Monitor is applied What is this rhythm? Second degree Type II – Classical Regular R to R More P waves than QRS Consistent PR interval 51 Case Scenario #2 Vital signs: B/P cannot obtain; P – 30; R – 10 – 12 per minute assisted Do you consider patient to be symptomatic? YES!!! Altered level of consciousness Decreased blood pressure Most likely cold and clammy Might have altered skin color 52 Case Scenario #2 What additional interventions are now required? Atropine 0.5 mg rapid IVP/IO Prepare TCP if medication is ineffective If TCP used, pre-medicate Valium 2 mg IVP/IO over 2 minutes May repeat 2 mg every 2 minutes as needed; max 10 mg For pain control Fentanyl 0.5 mcg/kg IVP/IO/IN May repeat dose in 5 minutes if needed 53 Case Scenario #2 What are the settings for TCP? Rate - 80/minute Sensitivity – auto Output – start mA at “0” Increase to lowest setting that delivers consistent capture Evaluate need for Valium and Fentanyl 54 Case Scenario #2 EMS notes a rhythm change What is the rhythm? VF What do you do? Immediately defibrillate followed by CPR 55 Case Scenario #2 What is your next action (an IV has already been established) Administer Epinephrine 1 mg IVP during CPR After 2 minutes of CPR pause for up to 10 seconds to evaluate the rhythm What do you do now? Check a pulse; there is no pulse; continue CPR for PEA56 Case Scenario #2 What is your next action after CPR resumed? Administer Epinephrine 1 mg 3 – 5 minutes after 1st dose and during CPR When able, can secure airway with advanced device (i.e.: ETT or King) When do you stop to check rhythms? After 2 minutes of CPR No pulse check unless you view a rhythm that should generate a pulse 57 Case Scenario #2 Early in critical situations consider the H’s and T’s as cause H’s Hypovolemia, hypoxia, hydrogen ion acidosis, hyper/hypokalemia, hypothermia T’s Toxins, tamponade, tension pneumothorax, thrombosis (coronary or pulmonary) 58 Case Scenario #2 Next 10 second pause, you note this: Pulse felt; sinus rhythm What is your immediate action? Check a pulse If no pulse, PEA and resume CPR If pulse, then evaluate ventilations Then check full vital signs 59 Case Scenario #2 What do you do if patient remains unresponsive after return of spontaneous circulation (ROSC)? Begin ROSC therapy (hypothermia induction) as long as ROSC is present at least 5 minutes Place ice packs in axilla, neck, and groin Place ice pack over IV insertion site 60 Case Scenario #2 ROSC indications Adult or pediatric patient resuscitated after out of hospital cardiac arrest Remains unconscious and unresponsive Return of spontaneous circulation (ROSC) greater than 5 minutes Able to maintain systolic B/P >90 with or without vasopressors Airway secured Presumed cardiac etiology 61 Case Scenario #3 EMS is called for a 45 year old patient with flu-like symptoms for past 24 hours Patient pale, dry, warm VS: B/P 100/70; P – 170; R 18; SpO2 92% What does the monitor display? Monomorphic ventricular tachycardia (VT) 62 Case Scenario #3 Is your patient stable or unstable? Relatively stable – awake, talking, B/P OK Is rhythm narrow or wide? Wide, regular, complexes similar Note: Wide rhythms should be considered VT until proven otherwise What medication is tried/attempted initially? Adenosine 6 mg rapid IVP immediately followed with 20 ML saline flush If this is not successful, what’s next? Amiodarone 150 mg 63 Case Scenario #3 How do you administer Amiodarone in relatively stable VT? Draw up and place 150 mg Amiodarone in 100 ml D5W Run through mini-drip IV tubing Connect IV drug line into main IV line Adjust flow rate so individual drips are visible Piggy back needs to run in over 10 minutes 64 Case Scenario #3 During preparation of IVPB, patient loses consciousness What is the rhythm? VF – what do you do? Immediately defibrillate patient Why not start CPR first? Do not want to delay defibrillation if ready to be used 65 Case Scenario #3 What do you do after each defibrillation? Resume CPR starting with compressions What medications would be given for VF unresponsive to defibrillation? Epinephrine 1:10,000 – 1 mg IVP/IO Repeated every 3 – 5 minutes Alternated with Amiodarone 300 mg IVP/IO Repeat dosage in 3 – 5 minutes is 150 mg IVP/IO May be given rapid – no worry of hypotension 66 Case Scenario #3 After several minutes and rounds of defibrillation and medication, this rhythm is noted: Asystole Now what? Resume CPR Do you do a pulse check? No, only if the rhythm should generate a pulse 67 Case Scenario #3 What medications are used for asystole? Epinephrine 1:10,000 - 1mg Repeated every 3 – 5 minutes Only medication used in asystole and PEA Need to be considering the H’s and T’s Evaluate effectiveness of compressions and ventilations Check capnography – should be at least 10mmHg during compressions Is ETCO2 indicator yellow? Is chest rising and falling; breath sounds bilateral? 68 Case Scenario #3 After several rounds of Epinephrine and on one of the rhythm checks you notice this rhythm What is the rhythm? What do you do now? Check a pulse; And yes, there is one!!! 69 Case Scenario #3 Now what do you do??? Evaluate the patient Start with ventilation status Then obtain vital signs Activate the ROSC protocol (cool patient) based on level of consciousness Patient remains unconscious and unresponsive Systolic B/P >90 with/without vasopressors Presumed cardiac etiology Cooling preserves neurological function 70 Case Scenario #4 EMS is called to the scene for a 30 year old patient who complains of a rapid heart rate for one hour after playing sports The patient now has chest pain and is weak What is the rhythm? SVT with rapid ventricular response 71 Case Scenario #4 VS: B/P 70/palpable; P -240; R – 28; SpO2 93% Chest pressure 7/10 Patient becoming less responsive What should EMS do? Prepare to synchronize cardiovert patient Patient becoming less tolerant of rapid rhythm Cardiac output is falling and patient is considered symptomatic 72 Case Scenario #4 What are the steps to cardiovert a patient? If able to, sedate patient Versed 2 mg IVP/IO over 2 minutes May repeat to desired effect and max of 10 mg Prepare monitor in sync mode Activate sync button Set energy joules starting at 100 j May increase as needed to 200j, 300j, 360j Observe safety precautions Look and call all clear before discharging energy buttons 73 Case Scenario #4 After cardioversion, you observe this on the monitor – what do you do? Check a pulse!!! There is no pulse Begin CPR with compressions The rhythm is PEA 74 Case Scenario #4 What is your next intervention/medication? Administer Epinephrine 1 mg 1:10,000 Deliver medications during 2 minute rounds of CPR After 2 minutes of CPR evaluate the rhythm What do you do? Check a pulse! Yes – there is a pulse 75 Case Scenario #4 Evaluate quality of ventilations If supportive ventilations required, avoid hyperventilation If using BVM – 1 breath every 5 – 6 seconds If ventilating via advanced airway, 1 breath every 6 – 8 seconds Consider activating ROSC after return of spontaneous circulation and continued unresponsiveness Evaluate for relative exclusions 76 Case Scenario #4 Relative exclusions ROSC hypothermia induction Major head trauma or traumatic cardiac arrest Recent major surgery within 14 days Systemic infection Coma from other causes such as drug induced or overdose Active bleeding Hypothermia not recommended in isolated respiratory arrest Suspected hypothermia already present (93.20F/340C) 77 Case Scenario #5 EMS is called for a 55 year-old patient with weakness Complains of fluttering in the chest Skin is pale and dry Patient is alert and oriented; B/P 110/70 What is the rhythm? Sinus tachycardia 78 Case Scenario #5 Sinus tachycardia NO MEDICATION TREATMENT!!! Rhythm generated in response to a situation Find the cause and treat the cause; not the rhythm Fever Pain Shock Anxiety 79 Case Scenario #5 Patient continues to complain of increasing episodes of chest fluttering You notice the monitor What is this rhythm? VT – monomorphic Complexes fit stacked one on top of each other 80 Case Scenario #5 What question/assessment is important to decide what treatment path to follow? Is patient stable or unstable??? VS: B/P 110/70 – P 110 – R 20; SpO2 99% Remains alert and oriented VT is in brief runs and then returns to sinus tach Patient should be considered relatively stable at this time 81 Case Scenario #5 Sustained VT is now noted The patient has a pulse Now what assessment is necessary? Is patient stable or unstable? Has a palpable radial pulse and answers all questions Patient remains relatively stable What intervention is required now? 82 Case Scenario #5 Treatment for stable monomorphic VT Adenosine 6 mg rapid IVP followed immediately with 20 ml NS flush There is no response to Adenosine Now what??? Amiodarone 150 mg IVPB Diluted in 100 ml D5W and run over 10 minutes What side effect do you need to monitor for when infusing Amiodarone? Hypotension 83 Case Scenario #5 - What if??? IF patient unstable VT and sync required: If first sync attempt is unsuccessful, begin to initiate an Amiodarone drip Do not want to delay time to begin medication Want to allow medication to start to work while continuing electrical therapy Mix 150 mg Amiodarone with 100 ml D5W Spike bag with mini drip tubing Piggy back into primary line Run fast enough to still be able to count individual drips 84 Case Scenario #5 After infusion of Amiodarone, you observe the following What does the monitor show? Sinus rhythm What assessment should be done? Peripheral pulses, rest of vital signs 85 Case Scenario #5 Patient’s B/P remains 72/40 The patient is symptomatic What interventions would be appropriate to treat hypotension? Following Cardiogenic Shock SOP IV/IO fluid challenge Assess lung sounds first to make sure patient can tolerate an increased amount of fluids Infuse 200 ml in increments Dopamine drip Begin at 5 mcg/kg/min (weight 185#) 86 Case Scenario #6 EMS called for a patient with complaints of fluttering in their chest for past several hours Patient awake, cooperative, answering all questions, pale, slightly diaphoretic, radial pulse rapid and weak What’s rhythm? Rapid atrial fibrillation 87 Case Scenario #6 This is a tachycardia What is your first question? Is the patient stable or unstable? Awake, talking, pale, slightly clammy C/O being lightheaded VS: B/P 96/70; P – 190; R – 24; SpO2 97% Patient is relatively stable Of course they have some symptoms with a heart rate of 190!!! 88 Case Scenario #6 Stable Rapid Atrial Fibrillation Valsalva maneuver Have patient bear down for 10 seconds Run monitor strip during maneuver Administer Verapamil 5 mg SLOW IVP over 2 minutes Watch blood pressure!!! If no response in 15 minutes AND B/P >90 Repeat Verapamil 5 mg SLOW IVP over 2 minutes 89 Bibliography Aehlert, B. ECG’s Made Easy. 4th Edition. Mosby Jems. 2011. Bledsoe, B., Porter, R., Cherry, R. Paramedic Care Principles & Practices, 4th edition. Brady. 2013. Region X SOP’s; IDPH Approved January 6, 2012. http://www.sgna.org/issues/sedationfactsorg/me dications.aspx Rnceus.com resuscitationcentral.com 90