jordan m. prutkin, md, mhs assistant professor department of cardiology/electrophysiology university...
TRANSCRIPT
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Jordan M. Prutkin, MD, MHSAssistant Professor
Department of Cardiology/Electrophysiology
University of Washington7/24/2014
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What to do…Check the patient’s pulseGet an ECG
Unless there’s no pulse. Then call a code and do ACLS
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Approaching an EKGEyeballRateRhythmAxisIntervalsP wavesQRS ST-T wavesOverall appearance
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Approach to ArrhythmiasDo you have calipers?Are there P waves? Are the P waves and QRS’s regular? Are there more P waves than QRS complexes?Are there more QRS complexes than P waves?Is there a constant relationship between the P
waves and QRS complexes (constant PR)?Do the QRS complexes look like the baseline
QRS (if known)? Are they wider? Narrower?
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Regular Irregular
Narrow Sinus TachAVNRTAVRTAtrial TachJunctional TachAtrial Flutter
AfibMATFrequent PACsRarely SVT Atrial Flutter Wenckebach
Wide Monomorphic VTAVRTSVT with: BBB Bypass pathway Ventricular pacing
Polymorphic VTVFibAfib, MAT, PACs with: BBB Bypass pathway Ventricular pacing
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Case 173 year old female admitted with pneumonia,
reports acute onset of shortness of breath
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Case 1
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What does this EKG show?1. Sinus rhythm2. Atrial fibrillation3. Atrial flutter4. Atrial tachycardia
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What does this EKG show?1. Sinus rhythm2. Atrial fibrillation3. Atrial flutter4. Atrial tachycardia
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Case 261 year old male presents to the ED with
palpitationsHR 155bpm, BP 122/76
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What does this EKG show?1. Sinus tachycardia2. Atrial fibrillation3. Atrial flutter4. Atrial tachycardia5. Artifact
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What does this EKG show?1. Sinus tachycardia2. Atrial fibrillation3. Atrial flutter4. Atrial tachycardia5. Artifact
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Management of Afib/flutterIs the patient hemodynamically stable?
If there’s hypotension, acute heart failure, mental status change, ischemia, or angina, then cardiovert
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If stable, then what?About 1/2 to 2/3 will terminate spontaneously
within 24 hoursDo you need to do anything then?
If rapid or mildly/moderately symptomatic, yes. Asymptomatic, HR <110bpm
Otherwise, maybe not.
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Rate controlIV
Diltiazem 5-20mg IV, then 5-20mg/hrMetoprolol 5mg IV Q5min x 3Esmolol gtt, if in ICU
PODiltiazem 30-60mg Q6HDiltiazem CD 120-240mg Q24HVerapamil 120-240mg Q24HMetoprolol 25mg Q6-8HMetoprolol XL 25-50mg Q12-24HAtenolol 12.5-50mg Q24HDigoxin?
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Rhythm ControlAmiodarone 150mg IV, then 0.5-1 mg/min gtt
Should really have a central lineDon’t use if afib >48 hours and no
anticoagulation
FlecainidePropafenone Call cardiologyIbutilide
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Anticoagulation/DCCV for AFIncreased risk of stroke after DCCVIf >48 hours, need three weeks of weekly
therapeutic coumadin levels, or TEE firstIf >48 hours and acute DCCV, give heparin
bolus, then infusion and anticoagulate for 4 weeks
If <48 hours, don’t need anticoagulation necessarily
LMWH, dabigatran, rivaroxaban, apixiban okay
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Sinus tachycardia78 year old admitted with pyelonephritisHR 120bpmECG shows sinus tachycardia
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Causes of sinus tachFeverInfection/SepsisVolume depletionHypotension/shockAnemiaAnxietyPulmonary
embolism
MIHeart failureCOPDHypoxiaHyperthyroidPheochromocytom
aStimulants/Illicit
substances
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Treatment for Sinus TachIn general, don’t treat heart rateTreat underlying causeException for acute MI, use beta-blockers
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Case 363 year old male is admitted with chest pain
to 5NEWhile waiting for a stress test, he reports
abrupt onset of palpitations and mild chest discomfort to his nurse.
Pulse 150, blood pressure 132/88
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Case 3-Presenting EKG
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What do you do?1. Cry?2. Call your senior resident/fellow?3. Give metoprolol?4. Give adenosine?5. All of the above?
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What do you do?1. Cry?2. Call your senior resident/fellow?3. Give metoprolol?4. Give adenosine?5. All of the above?
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Case 4-Adenosine
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SVT
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SVT treatmentVagal maneuvers (with ECG)Adenosine (with ECG)
6mg, 12mg, central line if possibleBeta-blockers/Ca channel blockers (on
telemetry)Can use even if WPW known on baseline ECG
Amiodarone (on telemetry)Procainamide (on telemetry)DCCV
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What is the diagnosis?1. Artifact2. Atrial flutter3. Atrial tachycardia4. Ventricular tachycardia
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What is the diagnosis?1. Artifact2. Atrial flutter3. Atrial tachycardia4. Ventricular tachycardia
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Case 535 year old male with a history of
nonischemic cardiomyopathyPresents with palpitations
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What is the diagnosis?1. Atrial fibrillation2. Atrial flutter3. Sinus Tachycardia4. Ventricular Tachycardia
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What is the diagnosis?1. Atrial fibrillation2. Atrial flutter3. Sinus Tachycardia4. Ventricular Tachycardia
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Fusion beat
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VT-Concordance
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What to do?If hemodynamically unstable, ACLS/shockIf hemodynamically stable, don’t shockCall cardiologyAmiodarone 150mg IV, then 0.5-1.0mg/min
gttLidocaine 100mg IV, 1-4mg/min gttBeta-blockerIABPIntubate/paralyze
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PVCs
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What to do?Most times, nothing if asymptomaticBeta-blocker first line if symptomaticCheck labs?
Usually normalTurn off telemetry?
Reasonable
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Polymorphic VTShock/ACLSMagnesiumGet an ECG when not in VTCall cardiologyBeta-blockerIsoproterenolPacingIschemia evaluationAvoid QT prolonging drugs (www.torsades.org)
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VFShockDo chest compressionsACLS drugsDon’t bother with an ECG
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Sinus bradycardia
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Type 2, 2nd degree AV block
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Regularized atrial fibrillation
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Bradycardia ManagementUsually, HR <40bpmIs the patient symptomatic?
Mental status changes, hypotension, angina, shock, heart failure
Acute or chronicAre they sleeping? Do they have sleep apnea?Not everyone with bradycardia, even
complete heart block, needs acute treatment if stable
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ManagementTrancutaneous pacing (sedate)Atropine 0.5mg Q3-5min, max 3mg
Avoid if cardiac transplant (may worsen block)Dopamine infusionEpinephrine infusionIsoproterenol infusionGlucagon if beta-blocker overdoseTransvenous pacing (call cardiology)
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ConclusionsYou will be called (frequently) about arrhythmia
issuesGet an ECGIf tachycardia, don’t use hemodynamics to diagnose
Wide or narrow, regular or irregularBeta-blockers, calcium channel blockersAmiodaroneCardioversion
If bradycardia, where is the level of block?Are they symptomatic?Call cardiology for transvenous pacing