in-hospital cardiac arrest: first and foremost, chest compressions charles l campbell ms md...
TRANSCRIPT
![Page 1: In-hospital Cardiac Arrest: First and foremost, Chest Compressions Charles L Campbell MS MD Associate Professor of Medicine University of Kentucky College](https://reader030.vdocuments.us/reader030/viewer/2022033104/56649cc45503460f9498cd0f/html5/thumbnails/1.jpg)
In-hospital Cardiac Arrest: First and foremost,
Chest Compressions
Charles L Campbell MS MDAssociate Professor of Medicine
University of Kentucky College of Medicine
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• No Disclosures
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Outline
• IHCA• Hospitals Vary in Outcome• Why• What is recommended• How should it be done• Does it really matter
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IHCA is pretty common…
• ˜200,000 in the US• Survival is 18-20%• There is tremendous
variability among hospitals
• Get with the Guidelines• 135,896– 20% with Ventricular
fibrillation or Ventricular tachycardia
– 64% occur in an ICU
• Median Survival Varies– 8.3% at the lowest
Decile– 31.4 at the highest
JAHA. 2014;3:e000400
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JAHA. 2014;3:e000400
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Clinical Feature Odds Ratio P
VT/VF 3.14 <0.0001
PEA 1.06 0.002
Etiology Toxicologic 2.36
ICU 1.60 <0.0001
Monitored 1.72 <0.0001
Comorbid Hepatic insufficiency
0.54 <0.0001
Comorbid Cancer 0.50 <0.0001
Arrest time at night
0.74 <0.0001
Arrest time Weekend
0.86 <0.0001
JAHA. 2014;3:e000400
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JAHA. 2014;3:e000400
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What seems to work?
• Performing ACLS correctly is associated with an improvement in outcome
• MUSC study• Compared guideline
adherence for survivors vs. non-survivors– 75 survivors– 75 non-survivors
• Survivors older and with more cormorbidities
Resuscitation. 2013;85:82-87
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Resuscitation. 2013;85:82-87
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Resuscitation. 2013;85:82-87
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Resuscitation. 2013;85:82-87
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Resuscitation. 2013;85:82-87
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• Each 10% improvement in adherance results in a ˜30% increase in ROSC.
Resuscitation. 2013;85:82-87
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What is Happening
• Weisfeldt and Becker1. Electrical Phase
1. 4 min2. Defibrillation alone
may be effective
2. Circulator Phase1. Chest compressions are
necessary
3. Metabolic Phase4. Stone Heart
JAMA.2002;288:3035-3038
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Time course of VF
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Circulation. 2005;111:1136-1140 and e294
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J Cardiovascular Magnetic Resonance. 2011;13:17
Hypothermia during VT/VF
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What is Recommended
• Defibrillation• Chest Compressions• Oxygenation• Medications• Procedures
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NEJM 2008;358:9-17
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Chest Compressions
• Place patient on a firm surface– Backboard– Deflation of air mattress
• Had in the middle of the chest– 5 cm of depression– Allow complete recoil• Lifting the hand completely of the chest can improve
recoil
Circulation. 2010;122:S685-705
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How Fast
• Rate 100-120 cpm• Deliver >80 per minute– That means minimal interruption
• Duty Cycle– Time between the start of one compression and
the start of the next – Target is 50%– As much time relaxing as compressing
Circulation. 2010;122:S685-705
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Circulation. 2005;428-434
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Circulation. 2005;428-434
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Circulation. 2005;428-434
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Circulation. 2012;125:3004-12
• ROC consortium (9 sites)• OHCA in which monitors/defib measured chest compression
rates• 3098 cases analyzed
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Circulation. 2012;125:3004-12
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Circulation. 2012;125:3004-12
Compression rate vs Compressions Delivered
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Circulation Qual Outcomes.2013;6:148-156
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Compression Depth
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Resuscitation. 2005;64:363-372
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Circulation Qual Outcomes.2013;6:148-156
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Recoil Matters…
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Resuscitation. 2006;71:341-351
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Resuscitation. 2006;71:341-351
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Resuscitation. 2006;64:353-362
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Circulation Qual Outcomes.2013;6:148-156
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Resuscitation, 2007;73:54-61
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Resuscitation, 2007;73:54-61
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Resuscitation, 2007;73:54-61
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Resuscitation. 2009;80:743-751
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Non-Shockable Rhythms
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Circulation. 2012;125:1787-94
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Circulation. 2012;125:1787-94
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Chest Compressions and Defibrillation
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Resuscitation. 2006;71:137-145
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Resuscitation. 2006;71:137-145
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• Survival from OHCA improved after the implementation of a protocol that required 90 seconds of CPR prior to the delivery of a shock via an AED– 24% to 30% – Particularly in those in whom the intial response interval was > 4 min.
JAMA. 1999;281:1182-1188
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Resuscitation. 2008;77:10-15
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Resuscitation. 2008;77:10-15
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Resuscitation. 2008;77:10-15
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Mechanical CPR?
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Conclusions
• Chest Compressions are the cornerstone of resuscitation– Rate– Depth– Recoil– Minimizing Interruptions – Feedback is probably helpful
• In some cases chest compressions aid defibrillation• Mechanical chest compressors have not been
demonstrated to be helpful