new life for the treatment of sudden death: translating...
TRANSCRIPT
New Life for the Treatment of Sudden Death: Translating New Guidelines to
our Patients
Terry Vanden Hoek, M.D. Associate Professor Medicine
Emergency Resuscitation CenterUniversity of Chicago and
Argonne National Laboratory
E R C
Conflict of interest disclosures:Conflict of interest disclosures:
Research funding from NIH, DODResearch funding from NIH, DOD
Preclinical hypothermia work includesPreclinical hypothermia work includes
patents for micropatents for micro--particulate ice slurryparticulate ice slurry
Other disclosures:Other disclosures:Mention of non-FDA approved devices for hypothermia
ObjectivesObjectivesHighlight new guidelines for cardiopulmonary Highlight new guidelines for cardiopulmonary resuscitation (CPR) and Emergency resuscitation (CPR) and Emergency Cardiovascular Care (ECC)Cardiovascular Care (ECC)
Discuss specific examples of translating new Discuss specific examples of translating new guidelines into the clinical settingguidelines into the clinical setting
Highlight need to develop physicianHighlight need to develop physician--scientists in scientists in Resuscitation MedicineResuscitation Medicine
Cardiac arrest survivalrates are not like those on TV—they have not changedsignificantly over 3 decades
Guidelines for CPR and survivalGuidelines for CPR and survivalGuidelines for CPR and ECC are reviewed and Guidelines for CPR and ECC are reviewed and updated every 5 years.updated every 5 years.Evidence evaluation process and consensus on Evidence evaluation process and consensus on science recommendations developed by science recommendations developed by International Liaison Committee on Resuscitation, International Liaison Committee on Resuscitation, of which AHA is a founding member.of which AHA is a founding member.AHA Guidelines were developed by AHA ECC AHA Guidelines were developed by AHA ECC volunteer clinicians, scientists, and researchers.volunteer clinicians, scientists, and researchers.
Guidelines ProcessGuidelines ProcessInternational evidence evaluation process reviewed International evidence evaluation process reviewed topics in ECC and CPR.topics in ECC and CPR.
Review process extended over 36 months and Review process extended over 36 months and included 281 reviewers, completing 403 reviews on included 281 reviewers, completing 403 reviews on 276 topics. 276 topics.
Additional information: Additional information: www.C2005.orgwww.C2005.org
2005 Guidelines Changes2005 Guidelines Changes
AdvancedAdvancedCardiovascularCardiovascularLife Support Life Support
Science of ACLSScience of ACLS•• Recognize Recognize periperi--arrest conditionsarrest conditions•• Cardiopulmonary Resuscitation (CPR): Cardiopulmonary Resuscitation (CPR):
airway, ventilation, chest compressionsairway, ventilation, chest compressions•• Choreography of CPR with ACLS careChoreography of CPR with ACLS care•• DefibrillationDefibrillation•• Drug therapyDrug therapy•• PostPost--resuscitation careresuscitation care•• Emergency Cardiovascular Care:Emergency Cardiovascular Care:
ACS and StrokeACS and Stroke
Evidence Worksheets posted at: www.C2005.org
Science of ACLS: CPRScience of ACLS: CPR
Quality of CPR OutQuality of CPR Out--ofof--HospitalHospitalCase series n=176 (Stockholm, London, Case series n=176 (Stockholm, London, AkershusAkershus))
Outcome measure = G2000 standardsOutcome measure = G2000 standards
Chest compressions were not delivered 48% of Chest compressions were not delivered 48% of the timethe time
Most compressions were too shallowMost compressions were too shallow
ECG analysis and ECG analysis and defibdefib accounted for only a small accounted for only a small part of chest compression interruptionpart of chest compression interruption
Wik et al. JAMA 2005; 293:299Wik et al. JAMA 2005; 293:299--304304
Quality of CPR During InQuality of CPR During In--Hospital Cardiac ArrestHospital Cardiac Arrest
Case series n=67 (Chicago)Case series n=67 (Chicago)
Outcome measure = G2000 standardsOutcome measure = G2000 standards
Chest compressions were too slowChest compressions were too slow
Chest compressions not delivered almost 25% of Chest compressions not delivered almost 25% of the timethe time
38% of the compressions were too shallow38% of the compressions were too shallow
Ventilation rates were too highVentilation rates were too high
Abella B. Abella B. JAMAJAMA 2005; 293:3052005; 293:305--310310
Ventricular Fibrillation and CPRVentricular Fibrillation and CPR
Aortic pressure (purple)Aortic pressure (purple)
Right atrial pressure (yellow)Right atrial pressure (yellow)
Coronary Perfusion Pressure (Ao diastolic Coronary Perfusion Pressure (Ao diastolic -- RA diastolic)RA diastolic)
Swine myocardial blood flow and CPP after interrupted CPR (16 second pauses)
5050
6060
7070
8080
9090
100100
1010
1212
1414
1616
1818
2020
2222
YesYes
NoNo
YesYes
NoNo
MB
F, m
l/100
g/m
inM
BF,
ml/1
00g/
min
CPP
, mm
Hg
CPP
, mm
Hg
Berg RA et al: Circulation 2001;104:2465Berg RA et al: Circulation 2001;104:2465--7070
P<0.001P<0.001 P<0.001P<0.001
Neurologically normal 24Neurologically normal 24 --hour survival in swine with interrupted CPR (16 second pauses)
01020304050607080
YesYes
NoNo
Kern KB et al: Circulation 2002;105:645Kern KB et al: Circulation 2002;105:645 --99
P<0.0001P<0.0001
CPR and defibrillationCPR and defibrillation
Effects of interrupting chest compression on Effects of interrupting chest compression on calculated probability of successful defibrillation calculated probability of successful defibrillation
during outduring out--ofof--hospital cardiac arresthospital cardiac arrest
55101015152020252530303535404045455050
0 5 10 15 0 5 10 15 2020Duration of handsDuration of hands--off, seconds/minuteoff, seconds/minute
PP RO
SCR
OSC
, %, %
EftestolEftestol T et al: Circulation 2002;105:2270T et al: Circulation 2002;105:2270--33
n=156n=156
Healthcare Provider Healthcare Provider –– CPRCPRUniversal compression to ventilation ratioUniversal compression to ventilation ratio
All victims:All victims: 30:2 30:2 compressions to ventilationscompressions to ventilations ((single single rescuer).rescuer).Minimize interruptions. Allow for complete chest Minimize interruptions. Allow for complete chest recoil.recoil.Infant/child: Infant/child: 15:215:2 compression to ventilation ratio (2compression to ventilation ratio (2--rescuers).rescuers).
Healthcare Provider Healthcare Provider –– CPRCPRChange compressors (2Change compressors (2--rescuers) rescuers)
Change “compressor” role every 2 minutes or 5 cycles of Change “compressor” role every 2 minutes or 5 cycles of CPR.CPR.
Complete switch in 5 seconds or less.Complete switch in 5 seconds or less.
Translating New Guidelines into Clinical CPR Quality
Defibrillator customizedWith sensors to detect:
• Chest compression rate and depth• Ventilation rate and volume• Pulse presence or absence
Records entire arrest transcript for analysisAbella et al, 2005Edelson et al, 2006
ventilations
ECG
compressions
pulse check ECG: v fib
shock given
Arrest transcript
ECG: v tach
ECG
Even
tC
ompr
essi
on
Compression rate = 78 /min1:10 1:15 1:20
Examples of arrest data
Inappropriate shock for PEA
Vent
ilatio
nVentilation rate = 48 /min
3:35 3:40 3:45
<60 60-69 70-79 80-89 90-99 100-109 110-119 120-129 130-139
90
80
70
60
50
40
30
20
10
0
n = 401 segmentsmean rate 100.5 ± 21.5
chest compression rate (cpm)
num
ber o
f 30
sec
segm
ents
Chest compression rates
<10 10-19 20-29 30-39 40-49
200
180
160
140
120
100
80
60
40
20
0
n = 454 segmentsmean rate 22.9 ± 12.4
ventilation rate (vpm)
num
ber o
f 30
sec
segm
ents
Ventilation rates
Code Team Review
ACLS ACLS –– PostresuscitationPostresuscitationHypothermiaHypothermia
Unconscious adult patients with ROSC after outUnconscious adult patients with ROSC after out--ofof--hospital cardiac arrest (VF) should be cooled to 32hospital cardiac arrest (VF) should be cooled to 32ooC to C to 3434ooC for 12 hours. C for 12 hours.
Similar therapy may be beneficial for patients with nonSimilar therapy may be beneficial for patients with non--VF arrest outVF arrest out--of or inof or in--hospital arrest. hospital arrest.
Further research is needed.Further research is needed.
Thinking about the basics of therapeutic hypothermia
•Early patient identification: finding the group of cardiac arrest patients who will benefit most from cooling
•Cooling methods: external, internal, expensive and cheap
•Importance of a multidisciplinary approach
Patients who benefit from cooling therapy
Less than 10% of presenting cardiac arrest patients with return of spontaneous circulation (ROSC) were considered for cooling in clinical studies:
Witnessed cardiac arrestComatose but hemodynamically stable In the Hypothermia after Cardiac Arrest (HACA)
study: 3,551 pts assessed, 275 enrolledOther selected inclusion/exclusion criteria:•VF or pulseless Vtach as initial rhythmn
• Presumed cardiac origin
•No prolonged hypotension (MAP<60mmHg for >30min) or hypoxia
( O2 sat <85% for >15min)
Cooling methods
•Surface cooling
Ice bags in additionto cooling blanketrequired in about
70% of ptsto reach target temp
Cooling methods•Surface cooling
--22 pts post ROSC who remained comatose --30ml/kg of ice-cold saline given via peripheral IV or femoral central line over 30 min after patient evaluated and paralyzed--Decreased core temp from 35.5 to 33.8 oC
Cooling methods•Internal cooling
Cooling methods•Internal cooling
Cooling methods
•Internal cooling
Therapeutic hypothermia after cardiac arrest:
Practical considerations for protocol development and
implementation strategies
Therapeutic hypothermia after cardiac arrest:
Practical considerations for protocol development and
implementation strategies
http://www.therapeutichypothermia.com
Course FacultyCourse Faculty
Mary Ann Peberdy, MD, FACCAssociate Professor of Medicine and Emergency MedicineVirginia Commonwealth University
Terry L. Vanden Hoek, MDAssociate Professor of Emergency MedicineUniversity of Chicago
http://www.therapeutichypothermia.com
From basic discovery to life-saving devices and treatments:
How do we accelerate discovery?
Critical Role of the Physician-Scientist
•Physician-scientists: those individuals holding an M.D. or M.D./Ph.D. degree who perform biomedical research as their primary professional activity.
•The number of physician-scientists in U.S. has been declining for the last 2 decades, down 22% from 18,535 in 1983 to 14,479 in 1998.
Ley TJ & Rosenberg LE. Removing career obstacles for young physician-scientists—loan repayment programs. N Engl J Med 346, 368-372 (2002)
Physician-Scientists are needed to close the gap between data/discovery and
new life-saving devices and treatments
The FASEB Journal 14, 221-230 (2000)
•“As we enter the post-genomic era, physician-scientists will have the specialized perspectives required to lead evolving fields such as geneticmedicine, pharmacogenetics, and bioinformatics. As this research is translated into patient treatment protocols, it is physician-scientists who will have the necessary training and skills to ensure that these protocols are designed and evaluated in ethical and rigorous clinical trials.”
Physician-Scientists are needed to close the gap between data/discovery and
new life-saving devices and treatments
Faxon D, Circulation 105, 1857-1860 (2002)
Make path of research/discovery less difficult.So much informationSo little time & moneySo few mentorsSo little representation onNational funding committees
The FASEB Journal 14, 221-230 (2000)
Nature Medicine 8 (5), 437-439 (2002)
Nature Medicine 8 (5), 437-439 (2002)
University of Chicago and Argonne National Laboratory
“Health care providers, scientists and bioengineers working together to restore life after sudden death.”
Emergency Resuscitation Center
Clinical potential for new metabolicresuscitation strategies
0
25
50
75
100
Field ROSC Hosp Admit
HospD/C
# alive New treatments during CPR
Use new molecular vital signsto guide/optimizeCPR
1999, CPR; Weil and Tang ed.
VisionVisionSudden death patients who are currently
pronounced “dead” after sudden cardiovascular shock will routinely be resuscitated back to full
human function.
Mission Statement: Key GoalsMission Statement: Key Goals
Restore life to victims of sudden death by developing innovative resuscitation strategies.Translate basic science discoveries into clinical diagnostic/therapeutic applications.Leverage multidisciplinary collaborations across relevant medical and scientific disciplinesDevelop world-class physician-scientists through formalized training programs--Laboratory and clinical rotation training
Provide hospital and community leadership in CPR/Resuscitation.
Translational ApproachTranslational Approach
Cellular basic science research
Translationalresearch Community
Bioengineering & Biotechnology
ERC CollaboratorsERC CollaboratorsAnesthesiology
Chun-Su YuanArgonne National Labs
Ken KaszaCarol Giometti
CardiologyBeth McNally
Emergency MedicineJames Rhee (Toxicology)Tom Fisher (Health Disparities)Linda Druelinger (Simulation)
Hospitalist MedicineDana Edelson
NeurologyJames Brorson
PediatricsGlyn DawsonJeremy Marks
Radiation/OncologyHoward Halpern
Pulmonary/Critical CareKimm HamannViswanathan NatarajanYimin Qin
Univ of MichiganSusan Stern
NorthwesternPaul Schumacker
Univ of WashingtonGraham Nichol
Virginia Commonwealth UniversityMimi Peberde
Medical College WisconsinTom Aufderheide
Univ of PennBen AbellaLance BeckerRaina MerchantRobert Neumar
Industry PartnersMedivanceGaymar IndustriesLaerdalPhilips
Ben AbellaJason AlvaradoTravis AndersonDavid BeiserWei-Tien ChangChang-Qing Li
ACKNOWLEDGEMENTS
Xinmin LiLance BeckerKimm HamannPaul SchumackerSue Stern
Juan LiYimin QinZuo-Hui ShaoHuashan WangKim WojcikDanhong Zhao