2007 terni, corso sulla medicina basata sull'evidenza. l'arresto cardiaco intraospedaliero

In-Hospital Cardiac ArrestIn-Hospital Cardiac ArrestEEvidencevidence B Basedased M Medicineedicine

Stefano Nardi MD,PhD

AZIENDA OSPEDALIERA SANTA MARIA TERNIAZIENDA OSPEDALIERA SANTA MARIA TERNI DIVISION OF CARDIOLOGY DIVISION OF CARDIOLOGY

ARRHYTHMIA, ELECTROPHYSIOLOGIC CENTER ARRHYTHMIA, ELECTROPHYSIOLOGIC CENTER AND CARDIAC PACING UNIT AND CARDIAC PACING UNIT

The only difference between CA and Syncope is that the last one “wake up”

Hodgetts TJ. Resuscitation ’02

Definition

• Natural Death (due to CARDIAC CAUSES)

Sudden (Cardiac) Death Sudden (Cardiac) Death

• Preceeding by a sudden loose of coscience until 1 h of start of the ACUTE SYMPTOMS, in a pts W or w/oa note pre-existent CARDIAC DISEASE, in which the die was not considered imminent.

• AGE and modality of DEATH are not prevedible

Myerburg RJ, Castellanos A ’80 Myerburg RJ, Castellanos A ’80

Task- Task-force on SD of ESC. EHJ ’01 force on SD of ESC. EHJ ’01

Suddenly Suddenly FILIPPIDE FILIPPIDE die immediately after his die immediately after his announcement at Atheniesis the victory ofannouncement at Atheniesis the victory of MARATONAMARATONA

ANCIENT PROBLEM ......

Vittorio Gassman

Massimo Troisi

Beniamino Andreatta

Umberto Bossi

Sergio Leone

Clark Gable

Dwight Eisenhower

..... CURRENT PROBLEM !!!!

Total DeathTotal Death 557.584 (100%) 557.584 (100%)

Death for CV diseaseDeath for CV disease 242.248 (43%) 242.248 (43%)

Sudden DeathSudden Death 57.000 (10.2%)57.000 (10.2%)

ISTAT source ‘00ISTAT source ‘00

0

50000

100000

150000

200000

250000 Cancro dellaMammellaCancro ColonRettoCancroBronchi/PolmoniIctus

Morte Improvvisa

MalattieCardiovascolari

Mort

i p

er

an

no

In hospital cardiac arrest

Mortality Distribution

• Until 20% survival

• Between 30 - 80% of survivals suffer of Anoxic Encephalopaty

Cardiac Arrest Cardiac Arrest

Magnitude (annual mortality)

•U. S. U. S. 450.000 450.000

•Europe Europe 600.000 600.000

•Germany Germany 80.000 80.000

•ItalyItaly 65.00065.000

Incidence in Italy Incidence in Italy

1 case each 9 minutes 1 case each 9 minutes


• 2 peak age-related in which SCD is more prevalent

• Between born and 6 mo (sudden infant death syndrome)

• Between 45 and 75 years old

Sudden Cardiac Death Sudden Cardiac Death

Relationship with Age

• 1 case each 1 case each 10 10 hours hours (UMBRIA)(UMBRIA)

• 912/850.000 each years912/850.000 each years

•10 %10 % of all total mortality of all total mortality

•40 %40 % of all deaths for CARDIAC DISEASE of all deaths for CARDIAC DISEASE

Primary Based on Studies and Clinical Research in a large cohort of

ptsBased on Statistical Analisys but strickly

linked with Personal Experiences and common good practise

What is Evidence Based Medicine (EBM)?

Magnitude of Sudden Cardiac Arrest

CLINICAL GOVERNANCE

• National Operative Organized System by which is possible to CTR the Standard references of QUALITY and the Continuous Educational System • Merge between Clinical Practice and Health Management

• Efficacy and Effectivness of Local Source

Big Brother

CLINICAL GOVERNANCE

PerformancePerformance Disease Disease Management Management

Evento Evento Sentinella Sentinella

AUDIT AUDIT EBM EBM

Clinical Governance is a cyclical process

GUIDELINES GUIDELINES

• Incidence variable 0.36-1.28/1000 Incidence variable 0.36-1.28/1000 pts in general population pts in general population

• In industrialized pts, the total In industrialized pts, the total annual incidence is 1/ 1000 annual incidence is 1/ 1000 inhabitants inhabitants

• In ITALYIn ITALY: studio FACS (Friuli) : studio FACS (Friuli) incidence of 0.95 cases each incidence of 0.95 cases each 1000/people for yr; LIFE PROJECT 1000/people for yr; LIFE PROJECT of Piacenza (Emilia) 1.10 CA each of Piacenza (Emilia) 1.10 CA each 1000 inhabitants for yr 1000 inhabitants for yr


Epidemiology

• Until 8/1000 inhabitants between 60 and 69 yrs

EBM

Schein RMH. Chest ’90; Franklin C. Crit Care Med ‘94Smith AF. Resuscitation 1998; Hodgetts TJ. Resuscitation ’02

In-Hospital Cardiac Arrest (CA)In-Hospital Cardiac Arrest (CA)

50-80% have “warning” signs

66% potentially avoidable

• C.A. Inside Hospital C.A. Inside Hospital 60%60%• C.A. Outside Hospital C.A. Outside Hospital 40%40%

It’s possible to stratifie the patients ?

Mostly subjects that TRY OUT a CARDIAC ARREST does not Survive to can NARRATE

itself


Which is the Classes at Risk ?

• Identification of appropriate pt categories

Methods

Evidence Based Medicine (EBM)

In-Hospital Cardiac Arrest In-Hospital Cardiac Arrest

• Identification of solid endpoints

• Definite working hypothesis

Risk Stratification

• WIDE Spectrum of underlying substrate

• Several combination between type of Arrhythmia and SUBSTRATE configure different Clinical Presentation with different profile of RISK

SUBSTRATESUBSTRATE• CAD• Valvular HD• Congenital HD• I-DCM

- reduction of LVEF - NSVT - Syncope

• H(O)CM• ARVD• Brugada syndrome• QTLS• Idiopatic VF • Idiopatic VT

Ecg (1) Ecg (2)

http://circ.ahajournals.org/content/vol105/issue1/images/large/G16FF2.jpeg

< 30 yrs % > 30 yrs %- Ao stenosis 3-18- Eisenmenger 15

- Congenital CM 10

- H (O) CM 1-50- ARVD 0-26- Mitral Prolapse 1-24- CAD 3-20

- CAD 85

- CM 10

- Valvular disease 3

- Electrical alternation 2

SUBSTRATES


Santomauro M, Cardiac Arrhythmias Santomauro M, Cardiac Arrhythmias ’05 ’05

Evidence Based is ruled by Ejecton Fraction (LVEF)

(PREVALENT restriction)

Methodologic Introduction


Total Mortality

Ejection Fraction

Considerations

The impact factor of a specific strategy is prevalently based on the reduction the probability of

event “END POINT”


PATHOGENESIS Bradiarrhythmias Bradiarrhythmias 15-20%15-20%

VT/VF VT/VF 75-80% 75-80%

EMD EMD 5%5%

Cardiac Rhythm recorded Cardiac Rhythm recorded in pts resuscitate to CA in pts resuscitate to CA

Cummins RO, Annals Emerg Med. ‘89

Albert CM. Circulation ‘03

Bayés de Luna A. Am Heart J. ‘89

Which rhythm during CA ?Which rhythm during CA ?

“ Which is the treatments of choice to Reduce SCD ? “

Zipes DP. Circulation ‘98Pitt B. NEJM ‘03

In both aviation and

medicine, people

depend on technology

as the solution…

ALARM DEFIBRILLATION

BLS ACLS

The Chain of Survival

Sequence and Terminology Sequence and Terminology

ASSESSMENTASSESSMENT ACTIVATE EMS ACTIVATE EMS

POSITIONPOSITION 1’ AIRWAY 1’ AIRWAY

1’ BREATHING 1’ BREATHING 1’ CIRCULATION 1’ CIRCULATION

DDDDDDDDDDDDDDDDDDDDDDDDDDDD 2’ AIRWAY 2’ AIRWAY 2’ BREATHING 2’ BREATHING 2’ CIRCULATION 2’ CIRCULATION

DDifferential ifferential Diagnosis Diagnosis

D DS

D D DS

1’ SURVED

2’ SURVE 2’ SURVEDD

It’s easy to get good players.It’s easy to get good players.

Getting ’em to play together …That’s the hard part.

Getting ’em to play together …That’s the hard part.

The ‘Swiss cheese’ model of organizational accidents

Some holes dueTo active failures

Other holes due tolatent conditions

Successive layers of defences

Hazards

Losses

It takes an average of 4.5 errors in the system for a medical accident to result Modified from James

Reason, 1991.

When to call for help?

• Few seconds after CAFew seconds after CA, , the subject loose the subject loose consciousness and stop to consciousness and stop to breath.breath.

• 4-6 minutes after CA4-6 minutes after CA, , it’s clearly evident a it’s clearly evident a significative Brain Damage significative Brain Damage

• More fastly is recovery More fastly is recovery cerebral circulation cerebral circulation more probability a complete more probability a complete recovery of Cerebral Function recovery of Cerebral Function

• 90 % of CA90 % of CA are completely are completely worked out if defibrillation is worked out if defibrillation is applied until 2 minutes applied until 2 minutes

SURVIVAL is Time-dependent SURVIVAL is Time-dependent

OBJECTIVES

• Identified CA. • Calling Help. • Start CPR (e.g. Mayo)• If appropriate start

with Defibrillation whithin 3’ from loose of consciousness


20:56:47 II

Print 2

20:56:59 II

Charge Complete

20:57:10 II Medtronic Physio-Control

Shock 1, 360 JII

Postshock Charge Complete

Time from CA to first

defibrillation (n=2748)

ssuurrvviivvaall

From: Swedish Cardiac Arrest Registry


• Survival decrease each m of 10%

Audit compliance 2000 - 2004

0

20

40

60

80

100

2000 2001 2002 2003 2004

Year

%

• Systematic analysis of ‘Assistential Quality System’• Comparison between ‘Guided lines’ and ‘Real Word’ proposed new Standard Organizative Models • Implementation of ‘Guided Lines’• Verification of ‘outcomes’ over the time

Device able to recognize automatically a VT/VF and delivery a DC shock

1) Automatic Diagnoses

2) Easy and ready to use


AED’s

AED’s and survival (AUDIT)

0

10

20

30

40

50

60

70

80

1999 2000 2001 2003

Number of AED's in situ

0

10

20

30

40

50

60

70

80

% S

urv

iva

l

AED's in situ ROSC Discharge Home

BRESUS Gwinnutt Peberdy

Year 1992 2000 2003

Number of

arrests

2835 1368 14720

% Survival to discharge

15 17.6 17

SURVIVAL (EBM)


END POINT mortality is correct ?END POINT mortality is correct ?

Cardiac Arrest

Complete recovery

Intervention

Brain Damage, kidney Brain Damage, kidney failurefailure

DEATH

Basic

Life

Support

T

I

M

E


* A Brain Damage “Start” 4-6’ after a loss of hemodinamic support (cardiovascular arrest )

* Become “irreversible” after 10’

SURVIVAL is Time-dependent SURVIVAL is Time-dependent

Evidence-Based Medicine

Gathering Medical Information

Evaluating quality of Medical Information

Making Medical decisions using Best Evidence

In-Hospital Cardiac Arrest In-Hospital Cardiac Arrest Evidence Based Medicine (EBM)

Hospital staff should provide a resuscitation service that

exceeds what is available in their local airport, railway

station etc

System of Training

In-Hospital Cardiac ArrestIn-Hospital Cardiac Arrest

Evidence Based Medicine (EBM)

The Clinical Staff

SERVICE

Educational Organizational

aspects


RESCUE Services • ~ 575 beds• ~ 350 MD• ~ 800 staff Nurses

• Complex ‘case mix’

of patients

CP Resuscitation does it only work on TV?

•What’s the problem in real life?

•Role of national standards


System of Training


• Who should we teach?

• What do we teach?

• How do we teach it?

• What resources do we use?

• How meaningful is the session?

• How could this teaching be improved?

Schein RMH. Chest ’90; Franklin C. Crit Care Med ‘94Smith AF. Resuscitation 1998; Hodgetts TJ. Resuscitation ’02

In-Hospital Cardiac Arrest In-Hospital Cardiac Arrest Who should we teach ?

• 50-80% have “warning” signs

• 66% potentially avoidable

• 85% pts recovery in Medical or Surgical Division (Unmonitored Ward

Areas – UWA), die for Sudden Death

• Less then 10% pts recovery in Intensive Care Unit (ICU) die for Sudden Death

• Cardiac Arrest usually is a predictable event NOT caused by primary Cardiac Disease.

• CA follows a period of slow and progressive deterioration (unrecognized or inadequately treated Hypoxemia and Hypotension).

• Rhythm is usually Asystole or PEA


• Chance of survival is extremely poor.

Unmonitored Ward Areas (UWA)

N= 78Hodgetts TJ. Resuscitation ‘02

Delay in the Diagnosis 77%Error in the Diagnosis 58%Nurse delay informing MD 35%Delayed response of MD Staff 29%Bad evaluation of altered analisys 58%Deficiencies in Acute Care 100%Failure to interpret X-rays 24%


Reasons for avoidable CA

Hodgetts TJ. Resuscitation ‘02

• Inadequate means (ie defibrillator)• Presence of architectural barriers• Presence of institutional barriers• AED often available in specific divisions• AED often useless for technical reason

(lack of experiences)• Missing of dedicated ‘Emergency Team’• Lengthy delay in CPR

Defibrillation in Italian Hospital occurs ‘OFTEN’ very Defibrillation in Italian Hospital occurs ‘OFTEN’ very late late


• Abnormalities of the A.B.C.

Deficiencies in Acute Care


• MD and Nursing staff with poor acute-care knowledge and skills, with lack of confidence when dealing with problems.

• Incorrect use of O2 therapy and failure to monitor pts

Schein RMH. Chest ’90; Franklin C. Crit Care Med ‘94Smith AF. Resuscitation ’98; Hodgetts TJ. Resuscitation ‘02

CPR Quality during CA

• Chest compressions were not delivered adequately and compressions were too shallow.

• Quality of multiple CPR parameters was inconsistent and often did not meet published guidelines.

Abella BS, Quality of CPR, During In-Hospital Cardiac Arrest. JAMA, ’05


• Pts deterioration is displayed with Common signs (LUNGS, HEART or BRAIN systems)

Recognition of ‘at-risk’ or critically ill pts

In hospital cardiac arrestUnmonitored Ward Areas (UWA)

• Physiological parameters are monitoring and measured less frequently than desirable.

• Monitoring HR, BP, RR may predict CP arrest.

• Significant effects on pt outcome.

• Pts discharged from ICU to GENERAL WARDS during the night have an increased risk of in-hospital death compared to those discharged during the day and those discharged to HIGH-DEPENDENCY UNITS. • Higher NURSE-Pt Staffing RATIOS are also associated with a reduction in CA rates, as well as rates

of PNEUMONIA, SHOCK and DEATH.

Hospital ProcessDeficiencies in Acute Care


1. FAILURE to use a systematic approach to the

assessment of critically ill pts

2. POOR communication

3. LACK of teamwork

4. INSUFFICIENT use of treatment limitation plans.

Addictional factors

Deficiencies in Acute Care


Hodgetts TJ. Resuscitation ‘02

• Inadequate means (ie defibrillator)• Presence of architectural barriers• Presence of institutional barriers• AED often available in specific divisions• AED often useless for technical reason

(lack of experiences)• Missing of dedicated ‘Emergency Team’• Lengthy delay in CPR

Defibrillation in Italian Hospital occurs ‘OFTEN’ very Defibrillation in Italian Hospital occurs ‘OFTEN’ very late late


Which is the RIGHT way ???

UTIC

Cardiochirurgi

a

Medicina Generale

Rianimazione Generale

Chirurgia Generale

PS

Sale

Operatorie Medicina d’ Urgenza

• avoidable CA rate about 2.12/1000 admissions

• CRUDELY extrapolating to the NHS in UK

• There are 23,000 potentially avoidable CA/yr


Extrapolating to the whole NHS

• 50-80% have “warning” signs

• 66% potentially avoidable

Evidence-Based Medicine

Gathering Medical Information

Evaluating quality of Medical Information

In-Hospital Cardiac Arrest In-Hospital Cardiac Arrest Evidence Based Medicine (EBM)

Asking questions and finding answers in clinical practice

(and in this room)

•INCLUSION CRITERIA

– Finding knowledge gaps

– Asking the right question

– Finding an answer

– Applying the answer

What are our habits in this respect?

EBM is important because - provides a science-based method for

• Improving physician practice– increase effectiveness / decrease harms (better clinical outcomes / cost-effectiveness)

• Increasing consumer knowledge – understand potential benefits / harms

•Building quality into healthcare systems– using practice guidelines, quality indicators

•Guiding government / employer policies– guide programs / policies on healthcare

Effective Communication’s System

Hammersmith Hospitals Policy

System of Training


• Teach the right skills

• Teach the right people

• Teach them well

• Positive evaluation and positive feedback

• Empower them to act

• Recall them for ‘refresher’ training

What do we teach?


• Introduction to Critical Care course

•Mandatory Skills Update course

• Immediate or Basic Life Support (BLS)

•Advanced (Cardiac) Life Support (ACLS)

•Newborn Life Support Course (NLS)

•Ad hoc sessions

C

O

U

R

S

E

S


Early Warning Scores (EWS)

• EWS is a point system that measure the Routine Vital Sign and their deviation from an arbitrarily ‘NORMAL RANGE”.

• The EWS is used to alert a ward staff or a critical care teams if a pts deteriorate his condition.

• The EWS systems incorporate a ‘CALLING-CRITERIA’ response when one or more measured variables reach an EXTREMELY ABNORMAL VALUE.

• EWS can track changes in physiology and warn of impending physiological collapse (detection of ill condition at an earlier stage).


• Several studies have identified abnormalities of HR, BP, RR, and conscious level as

possible markers of impending critical events.

Early Warning Scores (EWS)

Recognition of ‘at-risk’ or critically ill pts

Pre-arrest planning Recommendations

1. An EWS system should be in place to identify pts who are critically ill and therefore at risk of CP arrest

2. The institution should have a designated outreach or MET capable of responding to acute clinical crises identified by clinical triggers or other indicators.

3. The institution should have a pt charting system that facilitates the regular measurement and recording of EWS


• Information/Sensitisation of the Staff

• Hospital Staff Training in CPR-D

• Hospital Notification System for Emergencies

• Selection/creation of an Operative Team

• Rational positioning of Emergency Trolley

• Standard procedures for the staff

Key PointKey Point

• Quality CTR system

• Coordination Centre for emergencies

• Retraining of the Staff


• Continuous MONITORING of EWS in UWA (high predictive value of CA)


• Increase the frequency of vital sign monitoring.

• FAST and APPROPRIATE response of Medical/Nursing staff to a pt’s abnormal physiology

• A Medical Emergency Team (Medical and Nursing staff from ICU and MD) responds to pts with

acute physiological deterioration.

The Role of Education in Cardiac Arrest Response

• MET respects CTR groups reduce CA, deaths and un-anticipated ICU admissions, improved detection of Medical Errors, treatment-limitation decisions, and reduced postoperative ward deaths.


• In UK, a CRITICAL CARE OUTREACH is an integrated system of pre-emptive ward care that reduce ward deaths, postoperative adverse events, ICU admissions and readmissions, and increase survival.



• Many CA may be preventable with COURSES specifically designed to prevent physiological deterioration, critical illness, and CA

(ALERT Acute Life Threatening Events Recognition and Treatment)

• EBM suggests that they improve knowledge and change attitudes about acute care (BLS, ACLS).

• Training in acute and critical care should commence early. Many countries have established an education programme.


Do outcomes correlate with training?

Survival from ward-based VF/VT CA

• Place critical pts or those at risk of clinical deterioration in areas where the LEVEL of CARE matched the level of sick.

Recommended strategies for the prevention of avoidable IHCA

• Regularly monitor pt’s vital sign

• Match the frequency and type

of observations to the severity of illness of the pt.

• Use an EWS system to identify

pts who are critically ill, at risk of clinical deterioration or CA PA or both.


• A VITAL SIGNS CHART permits the regular measurement and recording of EWS.

• Ensure that the hospital has a clear policy that requires a

clinical response to deterioration in the pt’s clinical condition.• Provide advice on the further clinical management of the pt and the specific responsibilities of MEDICAL and NURSING STAFF.


• Introducing a clearly identified response to critical illness, that considered a MET able to responding in acute clinical crises.

• The clinical staff should be trained for recognize, monitor and manage

the critical ill pt.

• This MET should be ALERTED using an EWS and must be available 24 hours a day.

• Agree a hospital DNR policy based on national guidelines, and ensure that it is understood by all clinical staff.

• Identify pts for whom CA is an anticipated terminal event for whom CPR would be inappropriate.


UTIC

Cardiochirurgi

a

Medicina Generale

Rianimazione Generale

Chirurgia Generale

PS

Sale

Operatorie Medicina d’ Urgenza

GRAZIE per la cortese Attenzione

2007 terni, corso sulla medicina basata sull'evidenza. l'arresto cardiaco intraospedaliero

Health & Medicine

Transcript of 2007 terni, corso sulla medicina basata sull'evidenza. l'arresto cardiaco intraospedaliero