PCI
RANSFER FOR PRIMARY PERCUTANEOUS CORONARY ANGIOPLASTY IN ACUTE ST SEGMENT ELEVATION MYOCARDIAL INFARCTION GUIDELINE
Primary percutaneous coronary intervention (PPCI) is the default reperfusion treatment for patients who present or develop ST segment elevation myocardial infarction (STEMI).
Inclusion criteria.
Symptoms compatible with acute ST segment myocardial infarction (STEMI) within the last 12 hours AND with the following electrocardiogram (ECG) criteria:
ST segment elevation >1mm or more in contiguous limb leads or >2mm in contiguous chest leads
Left Bundle Branch Block (LBBB) believed to be new in the context of acute cardiac sounding chest pain
Patients resuscitated from cardiac arrest with ECG criteria as above.
GUIDELINE
Percutaneous coronary intervention (PCI), is a procedure carried out under
local anaesthetic in which a stenosis (narrowing) of the coronary artery is
dilated with a balloon catheter and is then treated with a stent (tubular metal
alloy device) which is implanted into the artery. The stent provides a
permanent internal scaffold to maintain patency of the artery.
In patients with a specific form of heart attack known as ST segment elevation
myocardial infarction (STEMI); the artery supplying the relevant area of heart
muscle is usually completely blocked by a combination of atheroma and blood
clot. Primary angioplasty (PPCI) is the use of the PCI technique to relieve the
blockage as the main or first treatment for appropriate patients suffering a
heart attack.
Primary PCI is the default reperfusion strategy in appropriate patients with
STEMI, provided it can be performed within 120minutes of diagnosis. (Keeley
et al 2003 and ESC Task Force 2012)
Where primary PCI cannot be performed within 120 minutes of diagnosis or
when the patient’s clinical condition prevents transfer fibrinolysis should be
considered. (Andersen 2003 & Widimsky 2000). See Clinical Guideline -
Thrombolysis of Adult Patients with Acute ST Elevation Myocardial Infarction.
2.1 Diagnosis
Working diagnosis of myocardial infarction must first be made. This is usually
based on a history of chest pain, often described as a heaviness or pressure
with radiation to the back, arms, neck or jaw lasting for 20 minutes or more.
The discomfort may be associated with shortness of breath, nausea or
vomiting. However it is important to remember that everyone is an individual
and presents differently. Data suggests that 30% of patients with STEMI
present with atypical symptoms. (Brieger 2004)
A 12-lead ECG should be obtained and interpreted as soon as possible after
cardiac pain is reported (Diercks 2006). Within the Emergency Department,
Acute Admission Units (EAU, AEC) and Coronary Care this should be within
not more than 8 minutes. Evidence of ST elevation with current cardiac chest
pain is sufficient to consider the diagnosis of STEMI.
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2.2 ECG Inclusion Criteria For Primary PCI
Symptoms compatible with acute myocardial infarction (MI) within the last 12
hours combined with any of the following electrocardiogram (ECG) criteria:
ST segment elevation >1mm or in at least 2 contiguous limb leads.
ST segment elevation >2mm in at least 2 contiguous chest leads.
Left Bundle Branch Block (LBBB) believed to be new in the context of
acute cardiac sounding chest pain
Patients resuscitated from cardiac arrest with ECG criteria as above.
Patients with LBBB believed to be pre-existing and appropriate history for MI
should be discussed with the PPCI service.
The inclusion criteria are evidence based to maximise patient benefit; in
exceptional circumstances, if the senior on-site clinician considers a patient
does not meet the standard inclusion criteria, but might still benefit from PPCI,
they should discuss the case with the on-call interventionist at the New Cross
Hospital Heart Attack Centre.
2.3 Individual Assessment
STEMI patients presenting to or who develop STEMI whilst under the care of
The Dudley Group of Hospitals will have access to the 24/7 PPCI based at the
Heart Attack Centre. In addition, patients who have not fully met the
ambulance inclusion criteria and have subsequently been brought to this
hospital may then be considered as suitable candidates following further
clinical assessment and/or discussion of their case with a specialist clinician at
the local Heart Attack Centre. On identification of such a patient, transfer must
be arranged urgently to minimise any delays.
The first step is to explain the treatment options to the patient and to gain
consent for transfer as described in section 2.4. If consent cannot be achieved
(e.g. due to lack of capacity) then it is the responsibility of the senior clinician
present to decide what actions are in the patient’s best interests (in those
circumstances relatives and/or carers should always be consulted if
available).
For patients where there is some doubt as to the appropriateness of referral a
discussion between the referring hospital (The Dudley Group NHSFT) and the
Heart Attack Centre should be carried out with a minimum of delay.
Should discussion be required regarding an individual case with the on call
interventional cardiologist, then the patient’s ECG can be faxed to the Heart
Attack Centre on 01902 695 735 and contact made with the on call
interventional team.
Once the patient has been assessed as being a suitable candidate to receive
PPCI they will then be immediately transferred to the Heart Attack Centre via
emergency ambulance.
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2.4 Patient Preference
When a patient is considered suitable for PPCI the final determination in the
selection of this treatment strategy must always be that of patient preference.
In obtaining the agreement to transfer, it is important that the patient
understands the reasons for transfer to the Heart Attack Centre.
The patient explanation script for PCI transfer Appendix 1 should be used to
aid the patient in understanding this. In the rare circumstance that a patient
refuses transfer they must be made aware of the increased risk of mortality
and morbidity of not receiving PPCI.
The clinician is only obtaining patient agreement to transfer for further
assessment at the Heart Attack Centre.
2.5 Emergency Ambulance Transfer - 01384 215 520
The local hospital team must arrange an emergency ambulance transfer to
the Heart Attack Centre by telephoning West Midlands Ambulance Control
directly. 01384 215 520.
On being connected to the ambulance despatcher inform them that you
require an “Immediate Critical Transfer for Primary PCI” The call will be
treated as Category A and given an immediate response.
The dispatcher will require a series of pre determined questions to be
answered. State the patient’s name, age, location (ward or department) and
medical condition as being Heart Attack for PCI.
Ensure that a Paramedic Crew is assigned and that Oxygen and Defibrillator
are provided for transfer from the ward / department.
If a relative of the patient is in attendance and they wish to travel then the
dispatcher should be informed. Only 1 relative is permitted to travel on the
vehicle and this is at the discretion of the crew who attend.
2.6 Alert Heart Attack Centre. – 01902 694 339
The local hospital clinician must then inform the Heart Attack Centre of the
patient by telephoning the dedicated number. 01902 694 339.
The Heart Attack Centre should be provided with as much information as
possible regarding the patient. As a minimum this should include:-
Patient demographics
Symptom onset and character of pain.
Territory of infarct /ECG evidence of STEMI
Relevant past medical history and cardiac risk factors.
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This should be done after requesting an emergency ambulance, to ensure the
transfer is as quick as possible. This will ensure the Heart Attack Centre has
sufficient time to activate internal protocols that will ensure the PPCI team and
the catheter labs are ready to receive the patient.
The local hospital clinician must then ensure that a ‘Hospital PPCI Transfer
Checklist’ Appendix 2 is completed and placed with the patient’s notes, on
transferring the patient to the Heart Attack Centre.
2.7 Relief Of Pain, Breathlessness And Anxiety (Mona)
Relief of pain is of paramount importance. Pain is associated with sympathetic
activation that causes vasoconstriction and increases the workload of the
heart.
Diamorphine 2.5mg-5mg is the drug of choice. This may be repeated as
required and titrated to individual’s level of pain and respiratory rate.
Anti-emetics (Metoclopramide 10mg IV) should be administered concurrently
with opioids to minimize nausea. (Rushton 2014)
Non invasive monitoring of blood oxygen saturation greatly helps when
deciding on the need and percentage of oxygen to be administered. When
non invasive monitoring is not immediately available oxygen should be
administered to those who are breathless, hypoxic or who have heart failure.
(ESC 2012)
Oxygen by mask or nasal prongs should only be used when necessary to
maintain Sp02 of between 94-98% in the normal population and between 88-
92% in patients with a history of respiratory disease.
2.8 Peri-Procedural Pharmacotherapy
Patients undergoing primary PCI should receive a combination of Dual
Antiplatelet Therapy (DAPT) with aspirin and an adenosine diphosphate
(ADP) receptor blocker, as early as possible before angiography.
Aspirin 300 mg should preferably be given orally and chewed, to ensure
complete inhibition of TXA2-dependent platelet aggregation. (ISIS2 1988)
The ADP-receptor blocker of choice is Ticagrelor 180mg oral loading.
(Wallentin et al 2009) Ticagrelor is contraindicated in patients with a previous
haemorrhagic stroke.
If Ticagrelor is contraindicated due to above reason then Clopidogrel 600mg
oral loading should be given instead. (Mehta et al 2010)
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2.9 The Ventilated Patient
In patients with resuscitated cardiac arrest, whose ECG shows ST-segment
elevation, immediate angiography with a view to primary PCI is the strategy of
choice, provided that the guidelines mandated times can be met. (Garot 2007
& Kern 2010).
Unfortunately, the prognosis of these patients remains poor and an
individualised assessment must be made before deciding on whether to
transfer for PPCI. All ventilated patients must be discussed with the Heart
Attack Centre prior to transfer. The following information must be available
prior to discussion:
1) Arterial blood gas findings – specifically pH, lactate, base excess
2) ‘Down time’ and whether bystander CPR was initiated before first medical
contact
3) Rhythm at the time of assessment by paramedics and any interventions
4) Total resuscitation time
5) Glasgow coma scale
6) Current observations – BP, heart rate, temperature, respiratory rate
7) Relevant co-morbidities and patient’s normal activity levels
The following have been associated with poor outcomes:
1) Unwitnessed arrest
2) Initial rhythm: Non-VF
3) No bystander CPR
4) >30 min to ROSC
5) Ongoing CPR
6) pH <7.2
7) Lactate >7
8) Age >85
9) End stage renal disease
10) Non - cardiac causes (e.g;,traumatic arrest)
In patients who have maintained a return of spontaneous circulation (ROSC)
but still require ventilator support the Dudley Group ICU medical staff must be
involved at the earliest opportunity to facilitate the safe and rapid transfer of
the patient for Primary PCI. Bleep 6012 or phone ICU ext. 2070 / 2649
On referring the patient The Heart Attack Centre should be informed that the
patient is intubated and request that a Cardiac Intensivist is available in the
Cardiac Catheter Laboratory New Cross Hospital when the patient arrives.
It is the responsibility of the Heart Attack Centres on call cardiology registrar
to ensure that a cardiac intensivist is available to receive handover of care
from The Dudley Group ICU medical staff. The Dudley Group ICU staff must
be given the name and contact details of the cardiac intensivist meeting them.
After being met at the centre by the receiving team and the patient having
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been handed over, the Dudley Group NHS Foundation Trust ICU team will
return.
New Cross Cardio-Thoracic ICU direct line 01902 694260 / 694261
It is the responsibility of the Heart Attack Centres Cardiac Nurse Co-ordinator
to facilitate a Cardiac ICU bed or if not available following PCI a General ICU
bed on the Wolverhampton site.
In preparing the patient for transfer the key priorities are to ensure a safe
secure airway. This is a time critical transfer and only interventions that are
required to be undertaken to ensure the patient is safe are required. Please
see Russell’s Hall Critical Care Unit Transport Checklist
2.10 Transfer Of Care.
The patient remains the responsibility of the team caring for the patient until
they have been handed over to WMAS and have left the department.
Any changes in the patients condition prior to transfer that were not previously
communicated to the Heart Attack Centre should be added to the transfer
document and verbally communicated to the Heart Attack Centre via the
Primary PCI Referral Line.
WMAS are unable to manage any drug infusions commenced prior to transfer.
In this instance an appropriately trained escort will be required to travel with
the patient. Cardiac Assessment Nurses should not be relied upon to transfer
patients. It is the responsibility of the nurse in charge of the department to
ensure appropriately qualified staff, escort the patient whilst maintaining local
staffing levels.
3. DEFINITIONS/ABBREVIATIONS
STEMI ST segment elevation myocardial infarction
ECG 12 Lead Electrocardiogram
PPCI Primary Percutaneous Coronary Intervention
LBBB Left Bundle Branch Block
PCI Percutaneous Coronary Intervention
ESC European Society of Cardiology
MI Myocardial Infarction
HAC Heart Attack Centre Wolverhampton
WMAS West Midlands Ambulance Service
Category A
Level of priority given to 999 ambulance call which
dictates a response within 8minutes.
mg Milligrams
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IV Intravenous
Sp02 Saturation of peripheral oxygen
DAPT
Dual anti-platelet therapy. – The use of two
antiplatelet drugs to effect platelet aggregation
ADP receptor inhibitor
Adenosine diphosphate receptor inhibitor. - class
of antiplatelet agents
ROSC Return of Spontaneous Circulation
ICU Intensive Care Unit
ED Emergency Department – Russells Hall
EAU Emergency Assessment Unit – Russells Hall
AEC Ambulatory Emergency Care – Russells Hall
CAT Cardiac Assessment Team. – Cardiac Specialist
Nurses – Russells Hall
4. DUTIES (RESPONSIBILITIES)
4.1 The Acute Coronary Syndrome Group - will be responsible for reviewing and
updating this document in light of new evidence and changes in practice. The
clinical representatives of this group will facilitate the communication of this
document amongst their peers.
The group will review incidents that fall within the remit of this procedural
document and where appropriate advise on local changes to practice.
4.2 The Primary PCI Lead Medical & Nursing New Cross Hospital – will be
responsible for communicating changes in practice and process to the
cardiology leads at the Dudley Group. They will also share incidents to inform
and develop clinical practice.
4.3 The Medical Heads of Service (ED, EAU, AEC and Cardiology) - have
overall responsibility for clinical activity within their relevant Department and
ensuring that systems are in place to monitor and audit clinical practice where
necessary.
The Medical Heads of Service also in collaboration with the Cardiac
Assessment Nurses are responsible for ensuring an appropriate education
programme is in place to ensure training of relevant staff regarding this
guideline
4.4 The Lead Nurses of (ED, EAU, AEC and Cardiology) – have overall
responsibility for nursing activity within their relevant Department and ensuring
that systems are in place to monitor and audit clinical practice where
necessary.
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The Lead Nurses in collaboration with the Cardiac Assessment Nurses are also
responsible for ensuring an appropriate education programme is in place to
ensure training of relevant staff regarding this guideline.
4.5 The Cardiac Specialist Nurses (Cardiac Assessment Team) – will liaise with
all relevant parties to ensure the safe and effective implementation of the
guideline on a daily basis.
They will work with relevant leads and heads of service to develop, implement
and develop appropriate training.
5. TRAINING/SUPPORT
All clinical staff working within the departments will have access to it on the
cardiology section of the Hub. Links should also be in place on the ED and
Acute medicine section of the Hub.
The ED/EAU/Cardiology education programmes (medical and nursing) will take
into account the specific educational requirements of clinical staff regarding the
management of STEMI and the Primary PCI referral process.
6. REFERENCES
Andersen HR et al (2003) Comparison of coronary angioplasty with fibrinolytic
therapy in acute myocardial infarction. N Engl J Med 2003;349:pp733–742.
Brieger D, Eagle KA, Goodman SG, Steg PG, Budaj A, White K, Montalescot
G.
Acute coronary syndromes without chest pain, an underdiagnosed and
undertreated
high-risk group: insights from the Global Registry of Acute Coronary
Events. Chest 2004;126:461–469.
Diercks DB, et al (2006) Frequency and consequences of recording an
electrocardiogram 10 minutes after arrival in an emergency room in non-STsegment
elevation acute coronary syndromes (from the CRUSADE Initiative). Am J
Cardiol 2006;97:437–442
European Society of Cardiology [ESC] 2012 Management of acute myocardial
infarction in patients presenting with persistent ST-segment elevation: The Task
Force on the management of ST-segment elevation European Heart Journal
(2012) 29, pp2909–2945
Garot P, et al (2007). Six-month outcome of emergency percutaneous coronary
intervention in resuscitated patients after cardiac arrest complicating STelevation myocardial infarction. Circulation 2007; 115: pp1354–1362.
Keeley EC, Boura JA, Grines CL. Primary angioplasty versus intravenous
thrombolytic therapy for acute myocardial infarction: a quantitative review of 23
randomised trials. Lancet. 2003:361:13-20.
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Kern KB and Rahman O (2010) Emergent percutaneous coronary intervention
for resuscitated victims of out-of-hospital cardiac arrest. Catheter
Cardiovascular International 2010;75: pp616–624.
Mehta SR, et al 2010. Double-dose versus standard-dose clopidogrel and highdose versus low-dose aspirin in individuals undergoing percutaneous coronary
intervention for acute coronary syndromes (CURRENT-OASIS 7): a
randomised factorial trial. Lancet 2010;376: pp1233–1243.
Rushton, Melanie (2014) Administration of Intermittent IV Opioids for Acute
Pain Management in Adults Guideline.
Wallentin L, etal (2009). Ticagrelor versus clopidogrel in patients with acute
coronary syndromes. N Engl J Med 2009;361:pp 1045–1057.
Widimsky P, etal (2000). Multicentre randomized trial comparing transport to
primary angioplasty vs immediate thrombolysis vs combined strategy for
patients with acute myocardial infarction presenting to a community hospital
without a catheterization laboratory. Eur Heart J. 2000;21:823-31.
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Appendix 1
‘Script’ to be read to patients being transferred from Dudley Group
NHS Foundation Trust to Heart Attack Centre for assessment for
PPCI
The following does not have to be read verbatim but these are the key facts which
should be relayed to the patient prior to transfer to the Heart Attack Centre
Wolverhampton for assessment for primary PCI.
Diagnosis of Heart Attack.
We believe that you are having a heart attack
This is caused by a narrowing and a blood clot forming in one of the heart’s
blood vessels
The area of heart muscle that this blood vessel supplies is starved of oxygen and
is likely to be the cause of your symptoms
The aim of treatment is to re-open this blocked vessel in order to restore blood
flow and so minimise the damage done to the heart
Treatment - Primary angioplasty
This is a procedure not a surgical operation.
You will not require an anaesthetic but may receive medications so you feel
more relaxed.
It involves passing a fine tube, via the wrist or groin, into the blood vessels of the
heart and physically unblocking the clot / opening the narrowing.
Location – Heart Attack Centre Wolverhampton.
To get the primary angioplasty treatment we will need to transfer you
immediately by emergency ambulance to the Heart Attack Centre.
The Local Heart Attack Centre for this area is in Wolverhampton on the site of
New Cross Hospital.
This allows for specialist operators who specialise in this treatment to
concentrate their skills and treat a greater number of people.
Post Procedure
Patients who undergo PPCI tend to stay in hospital 2-3days
Unless your recovery is delayed, you will remain at the Heart Attack Centre for
your hospital care.
After discharge from the Heart Attack Centre your details will by passed back to
Cardiology at Dudley Group NHS and your on going care and follow up will be
provided locally.
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