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CARDIOPULMONARY
RESUSCIATION
Dr. Nisheeth M. Patel
M. D (Medicine), FCCCM
Consultant Physician & Intensivist
INTRODUCTION:
 Cardiopulmonary resuscitation is a life saving
procedure in case of sudden cardiac arrest
 Every individual should know how to give effective
CPR
 The basic principles of resuscitation are an integral
part of training for many health care providers
(HCPs).
 Timely interventions for cardiac arrest victims have
the potential to be truly lifesaving.
 Sudden cardiac arrest is defined as the cessation of
effective cardiac mechanical activity as confirmed
by the absence of signs of circulation.
 Sudden cardiac arrest is the most common fatal
manifestation of cardiovascular disease and a
leading cause of death.
CHAIN OF SURVIVAL:
 The chain of survival:
 Immediate recognition that cardiac arrest has
occurred and activation of the emergency response
system
 Application of effective CPR
 Early defibrillation (if applicable)
 Advanced cardiac life support
 Initiation of post-resuscitation care
IMMEDIATE RECOGNITION OF CARDIAC ARREST
 For CPR to be effective in restoring spontaneous
circulation, it must be applied immediately at the
time of cardiac arrest.
 Pulse checks are often unreliable, even when
performed by experienced personnel, so prolonged
attempts to detect a pulse may result in a delay in
initiating CPR, prolonged pulse checks are to be
avoided.
 Delays in initiating CPR are associated with worse
outcome and CPR should be started immediately if
the patient is unresponsive and either has agonal
gasps or is not breathing.
CHEST COMPRESSIONS
 In CPR, chest compressions are used to circulate
blood to the heart and brain until a pulse can be
restored.
 The mechanism by which chest compressions
generate cardiac output is through an increase in
intra-thoracic pressure plus direct compression of
the heart.
 With the patient lying in the supine position, the
rescuer applies compressions to the patient’s
sternum.
 Heel of one hand is placed over the lower half of
the sternum and the heel of the other hand on top
in an overlapping and parallel fashion.
 The recommended compression depth in adults is 2
inches. The recommended rate of compression is 100
or more per minute. “Push hard, push fast” is now the
American Heart Association (AHA) mantra for CPR
instruction
 In addition, incomplete recoil of the chest impairs the
cardiac output that is generated, and thus the chest
wall should be allowed to recoil completely between
compressions.
 Owing to rescuer fatigue, the quality of chest
compressions predictably decreases as the time
providing chest compressions increases, and the
persons providing chest compressions (even
experienced professionals) may not perceive fatigue
or a decrease in the quality of their compressions.
 Therefore, it is recommended that rescuers
performing chest compressions rotate every 2
minutes.
 The quality of CPR is a critical determinant of
surviving a cardiac arrest event.
 Minimization of interruptions in chest compressions
is imperative.
 Potential reasons for “hands off” time include pulse
checks, rhythm analysis, switching compressors,
procedures (e.g., airway placement), and pauses
before defibrillation (“preshock pause”).
 All of these potential reasons for interruptions must
be minimized. Pauses related to rotating
compressors or pulse checks should take no longer
than a few seconds.
 Eliminating (or minimizing) preshock pauses has
been associated with higher likelihood of ROSC
and improved clinical outcome.
DEFIBRILLATION
 The next critically important action in the
resuscitation of patients with cardiac arrest due to
pulseless ventricular arrhythmias (i.e., VF or
pulseless VT) is rapid defibrillation (D Fib).
 Delays in defibrillation are clearly deleterious, with a
sharp decrease in survival as the time to
defibrillation increases.
 With the advent of automatic external defibrillators
(AEDs) and their dissemination into public places,
both elements of effective CPR can be performed
by lay rescuers in the field for patients with out-of-
hospital cardiac arrest.
 Rapid application of D fib can improve the survival
chances.
RESCUE BREATHING
 The most recent AHA recommendations regarding
ventilation during CPR depends on who the rescuer is
(i.e., trained HCPs versus lay person).
 For trained HCPs, the recommended ventilation strategy
is a cycle of 30 chest compressions to two breaths until
an endotracheal tube is placed
 After that continuous chest compressions with one
breath every 6 to 8 seconds after the endotracheal tube
is placed.
 Excessive ventilations can be deleterious from a
hemodynamic perspective and should be avoided.
 Increased intra-thoracic pressure
 Reduction in the cardiac output generated by CPR
 Excessive ventilation could also potentially result in
alkalemia.
 For lay persons who are attempting CPR in the field
for a victim of out-of-hospital cardiac arrest, rescue
breathing is no longer recommended.
 The recommended strategy is compression-only (or
“hands-only”) CPR.
 The rationale is that compression-only CPR can
increase the number of effective chest
compressions that are delivered to the patient (i.e.,
minimizes interruptions for rescue breaths), and
does not require mouth-to-mouth contact.
 Hands-only CPR has become the preferred
technique to teach lay rescuers
SIMPLIFIED ADULT BLS
ADVANCED CARDIAC LIFE SUPPORT
 There are several additional elements of
resuscitation that are intended specifically for
trained professionals (e.g., advanced cardiac life
support [ACLS]), and these elements include
pharmacologic therapy.
 CPR quality:
 Push hard and fast (> 2 inches compression at 100-
120/min) and allow complete chest recoil
 Minimize interruption
 Avoid excessive ventilation
 Rotate compressor every 2 min
 30:2 compression ventilation ratio
 If EtCO2 < 10 mmHg and Relaxation phase
diastolic pressure < 20 mmHg; improve CPR
Defibrillation:
 Biphasic:
 First as per manufacturer recommendation (initial
120- 200 J)
 If unknown, give maximum available
 Second or subsequent doses should be equivalent
or higher.
 Monophasic: 360 J
 Drug therapy:
 IV or IO epinephrine: 1 mg every 3 to 5 mins
 IV or IO amiodarone: 300 mg bolus and then 150.
 Through ET tube: 2-2.5 mg
 Vasopressin (40 mg IV/IO) can be substituted for
the first or second dose of epinephrine.
 Advanced airway:
 Endotracheal intubation or supraglottic airway
 Waveform capnography to confirm and monitor ET
tube placement.
 Once confirmed, give 1 breath every 6 sec; i.e. 10
breaths/ min with continuous chest compression
 Return of spontaneous circulation (ROSC):
 Pulse and blood pressure
 Abrupt sustain increase in ETCO2 > 40 mmHg
 Spontaneous intra arterial pressure waves with
intra arterial monitoring.
 Insufficient evidence to recommend routine
administration of sodium bicarbonate during CPR.
 The provision of a precordial thump may be
considered in a monitored arrest due to pulseless
ventricular tachycardia if a defibrillator is not
immediately available
 A precordial thump is no longer recommended for
ventricular fibrillation.
 Reversible causes:
 Hypovolaemia
 Hypoxia
 Hydrogen Ions (Acidosis)
 Hypo or hyperkalemia
 Hypothermia
 Tamponade, cardiac
 Tension pneumothorax
 Thrombosis – pulmonary
 Thrombosis – coronary
 Toxins
POST RESUSCITATION CARE
 Even if ROSC is achieved with CPR and
defibrillation, cardiac arrest victims are at extremely
high risk of dying in the hospital, and many who
survive sustain permanent crippling neurologic
squeal.
 After ROSC, global ischemia/reperfusion (I/R) injury
results in potentially devastating neurologic
disability. The primary cause of death among post
resuscitation patients is brain injury.
 the post resuscitation care is now considered to be
a crucial fifth link in the chain of survival paradigm.
KEY FACTORS TO CONSIDER AFTER
RESUSCITATION FROM CARDIAC ARREST
 Immediate tasks
 Re-evaluate ABCDE
 12-lead ECG
 Treat precipitating causes
 Re-evaluate oxygenation and ventilation
 Temperature control (cool)
 Early goals
 Continue respiratory support
 Maintain cerebral perfusion
 Treat and prevent cardiac arrhythmias
 Determine and treat the cause of the arrest
SPECIFIC TASKS
 Maintain haemodynamics (SBP > 100 mmHg)
 Maintain adequate oxygenation ( 94–98%)
 Maintain normal pH and normocarbia (e.g. 35–
40 mmHg
 Treat hyperglycaemia (>180mg/dL), but avoid hypogly-
caemia
 Consider therapeutic hypothermia (unless
contraindicated)
 Maintain appropriate sedation
 Treat seizures
 Continue search to identify underlying cause(s) and
trauma related to resuscitation
 Consider specific treatment for underlying cause (e.g.
percutaneous coronary intervention, thrombolytics)
 Consider prophylactic antiarrhythmics
 Consider transfer to resuscitation centre
THERAPEUTIC HYPOTHERMIA
 Therapeutic hypothermia (TH) is a treatment strategy of
rapidly reducing the patient’s body temperature after
ROSC for the purposes of protection from neurologic
injury.
 The body temperature is typically reduced to 33° to 34°
C for 12 to 24 hours. After ROSC the severity of the
reperfusion injury can be mitigated, despite the fact that
the initial ischemic injury has already occurred.
 Reperfusion injury refers to tissue and organ system
injury that occurs when circulation is restored to tissues
after a period of ischemia, and is characterized by
inflammatory changes and oxidative damage that are in
large part a consequence of oxidative stress.
 Neuronal cell death after I/R injury is not
instantaneous, but rather a dynamic
process.
 TH may protect the brain by attenuating or
reversing all of the following patho-
physiologic processes:
 Disruption of cerebral energy metabolism,
 Mitochondrial dysfunction,
 Loss of calcium ion homeostasis,
 Cellular excito-toxicity,
 Oxygen free radical generation
 Apoptosis.
 The current AHA guidelines for CPR and
emergency cardiovascular care recommend 12 to
24 hours of TH for comatose survivors of out-of-
hospital cardiac arrest due to VF or pulseless VT.
 TH may also be considered for victims of in-hospital
cardiac arrest and other arrest rhythms.
 Methods for inducing TH:
 specialized external or intravascular cooling
devices for targeted temperature management
 Combination of conventional cooling methods such
as ice packs, cooling blankets, and cold (4° C) IV
saline infusion.
 Regardless of what method is used, effective
achievement of target temperature may be aided by
the use of a uniform physician order set for TH
induction.
 The current recommendation is to maintain TH for
12 to 24 hours.
 Whether or not a longer duration of therapy could
be beneficial is currently unknown.
SELECTION OF CANDIDATES FOR TH
 If a patient does not follow verbal commands after
ROSC is achieved, this indicates that the patient is
at risk for brain injury and TH should be strongly
considered.
 If a patient is clearly following commands
immediately after ROSC, then significant brain
injury is less likely and it is probably reasonable to
withhold TH.
PROBLEMS WITH TH
 Shivering with TH induction
 Bradycardia
 “Cold diuresis” resulting in hypovolemia and electrolyte
derangements
 Hyperglycemia
 Coagulopathy
 Increased risk of secondary infection.
 Complications are often not severe when they do occur
 Risk of anoxic brain injury usually greatly outweighs the
risks of complications.
 fever must be avoided.
 Fever is clearly detrimental in brain-injured patients
because it increases cerebral metabolic rate.
NEUROLOGIC PROGNOSTICATION
 Neurologic prognostication is often extremely
difficult in the first few days after resuscitation from
cardiac arrest.
 Neurologic prognostication immediately (e.g., first
24 hours) after resuscitation from cardiac arrest is
especially unreliable.
 Recommendation is to wait a minimum of 72 hours
after ROSC before neurologic prognostication
 If there are zero signs of neurologic improvement
over 2 or more consecutive days, typically deem
neurologic prognostication to be reliable at that
time.
THANK
YOU
Disclaimer: All images and data had been taken from AHA guidelines for CPR

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Cardiopulmonary resuscitation

  • 1. CARDIOPULMONARY RESUSCIATION Dr. Nisheeth M. Patel M. D (Medicine), FCCCM Consultant Physician & Intensivist
  • 2. INTRODUCTION:  Cardiopulmonary resuscitation is a life saving procedure in case of sudden cardiac arrest  Every individual should know how to give effective CPR  The basic principles of resuscitation are an integral part of training for many health care providers (HCPs).  Timely interventions for cardiac arrest victims have the potential to be truly lifesaving.
  • 3.  Sudden cardiac arrest is defined as the cessation of effective cardiac mechanical activity as confirmed by the absence of signs of circulation.  Sudden cardiac arrest is the most common fatal manifestation of cardiovascular disease and a leading cause of death.
  • 4. CHAIN OF SURVIVAL:  The chain of survival:  Immediate recognition that cardiac arrest has occurred and activation of the emergency response system  Application of effective CPR  Early defibrillation (if applicable)  Advanced cardiac life support  Initiation of post-resuscitation care
  • 5. IMMEDIATE RECOGNITION OF CARDIAC ARREST  For CPR to be effective in restoring spontaneous circulation, it must be applied immediately at the time of cardiac arrest.  Pulse checks are often unreliable, even when performed by experienced personnel, so prolonged attempts to detect a pulse may result in a delay in initiating CPR, prolonged pulse checks are to be avoided.  Delays in initiating CPR are associated with worse outcome and CPR should be started immediately if the patient is unresponsive and either has agonal gasps or is not breathing.
  • 6. CHEST COMPRESSIONS  In CPR, chest compressions are used to circulate blood to the heart and brain until a pulse can be restored.  The mechanism by which chest compressions generate cardiac output is through an increase in intra-thoracic pressure plus direct compression of the heart.  With the patient lying in the supine position, the rescuer applies compressions to the patient’s sternum.  Heel of one hand is placed over the lower half of the sternum and the heel of the other hand on top in an overlapping and parallel fashion.
  • 7.  The recommended compression depth in adults is 2 inches. The recommended rate of compression is 100 or more per minute. “Push hard, push fast” is now the American Heart Association (AHA) mantra for CPR instruction  In addition, incomplete recoil of the chest impairs the cardiac output that is generated, and thus the chest wall should be allowed to recoil completely between compressions.  Owing to rescuer fatigue, the quality of chest compressions predictably decreases as the time providing chest compressions increases, and the persons providing chest compressions (even experienced professionals) may not perceive fatigue or a decrease in the quality of their compressions.  Therefore, it is recommended that rescuers performing chest compressions rotate every 2 minutes.
  • 8.  The quality of CPR is a critical determinant of surviving a cardiac arrest event.  Minimization of interruptions in chest compressions is imperative.  Potential reasons for “hands off” time include pulse checks, rhythm analysis, switching compressors, procedures (e.g., airway placement), and pauses before defibrillation (“preshock pause”).  All of these potential reasons for interruptions must be minimized. Pauses related to rotating compressors or pulse checks should take no longer than a few seconds.  Eliminating (or minimizing) preshock pauses has been associated with higher likelihood of ROSC and improved clinical outcome.
  • 9. DEFIBRILLATION  The next critically important action in the resuscitation of patients with cardiac arrest due to pulseless ventricular arrhythmias (i.e., VF or pulseless VT) is rapid defibrillation (D Fib).  Delays in defibrillation are clearly deleterious, with a sharp decrease in survival as the time to defibrillation increases.  With the advent of automatic external defibrillators (AEDs) and their dissemination into public places, both elements of effective CPR can be performed by lay rescuers in the field for patients with out-of- hospital cardiac arrest.  Rapid application of D fib can improve the survival chances.
  • 10. RESCUE BREATHING  The most recent AHA recommendations regarding ventilation during CPR depends on who the rescuer is (i.e., trained HCPs versus lay person).  For trained HCPs, the recommended ventilation strategy is a cycle of 30 chest compressions to two breaths until an endotracheal tube is placed  After that continuous chest compressions with one breath every 6 to 8 seconds after the endotracheal tube is placed.  Excessive ventilations can be deleterious from a hemodynamic perspective and should be avoided.  Increased intra-thoracic pressure  Reduction in the cardiac output generated by CPR  Excessive ventilation could also potentially result in alkalemia.
  • 11.  For lay persons who are attempting CPR in the field for a victim of out-of-hospital cardiac arrest, rescue breathing is no longer recommended.  The recommended strategy is compression-only (or “hands-only”) CPR.  The rationale is that compression-only CPR can increase the number of effective chest compressions that are delivered to the patient (i.e., minimizes interruptions for rescue breaths), and does not require mouth-to-mouth contact.  Hands-only CPR has become the preferred technique to teach lay rescuers
  • 13. ADVANCED CARDIAC LIFE SUPPORT  There are several additional elements of resuscitation that are intended specifically for trained professionals (e.g., advanced cardiac life support [ACLS]), and these elements include pharmacologic therapy.  CPR quality:  Push hard and fast (> 2 inches compression at 100- 120/min) and allow complete chest recoil  Minimize interruption  Avoid excessive ventilation  Rotate compressor every 2 min  30:2 compression ventilation ratio  If EtCO2 < 10 mmHg and Relaxation phase diastolic pressure < 20 mmHg; improve CPR
  • 14. Defibrillation:  Biphasic:  First as per manufacturer recommendation (initial 120- 200 J)  If unknown, give maximum available  Second or subsequent doses should be equivalent or higher.  Monophasic: 360 J
  • 15.  Drug therapy:  IV or IO epinephrine: 1 mg every 3 to 5 mins  IV or IO amiodarone: 300 mg bolus and then 150.  Through ET tube: 2-2.5 mg  Vasopressin (40 mg IV/IO) can be substituted for the first or second dose of epinephrine.  Advanced airway:  Endotracheal intubation or supraglottic airway  Waveform capnography to confirm and monitor ET tube placement.  Once confirmed, give 1 breath every 6 sec; i.e. 10 breaths/ min with continuous chest compression
  • 16.  Return of spontaneous circulation (ROSC):  Pulse and blood pressure  Abrupt sustain increase in ETCO2 > 40 mmHg  Spontaneous intra arterial pressure waves with intra arterial monitoring.  Insufficient evidence to recommend routine administration of sodium bicarbonate during CPR.  The provision of a precordial thump may be considered in a monitored arrest due to pulseless ventricular tachycardia if a defibrillator is not immediately available  A precordial thump is no longer recommended for ventricular fibrillation.
  • 17.  Reversible causes:  Hypovolaemia  Hypoxia  Hydrogen Ions (Acidosis)  Hypo or hyperkalemia  Hypothermia  Tamponade, cardiac  Tension pneumothorax  Thrombosis – pulmonary  Thrombosis – coronary  Toxins
  • 18.
  • 19. POST RESUSCITATION CARE  Even if ROSC is achieved with CPR and defibrillation, cardiac arrest victims are at extremely high risk of dying in the hospital, and many who survive sustain permanent crippling neurologic squeal.  After ROSC, global ischemia/reperfusion (I/R) injury results in potentially devastating neurologic disability. The primary cause of death among post resuscitation patients is brain injury.  the post resuscitation care is now considered to be a crucial fifth link in the chain of survival paradigm.
  • 20. KEY FACTORS TO CONSIDER AFTER RESUSCITATION FROM CARDIAC ARREST  Immediate tasks  Re-evaluate ABCDE  12-lead ECG  Treat precipitating causes  Re-evaluate oxygenation and ventilation  Temperature control (cool)  Early goals  Continue respiratory support  Maintain cerebral perfusion  Treat and prevent cardiac arrhythmias  Determine and treat the cause of the arrest
  • 21. SPECIFIC TASKS  Maintain haemodynamics (SBP > 100 mmHg)  Maintain adequate oxygenation ( 94–98%)  Maintain normal pH and normocarbia (e.g. 35– 40 mmHg  Treat hyperglycaemia (>180mg/dL), but avoid hypogly- caemia  Consider therapeutic hypothermia (unless contraindicated)  Maintain appropriate sedation  Treat seizures  Continue search to identify underlying cause(s) and trauma related to resuscitation  Consider specific treatment for underlying cause (e.g. percutaneous coronary intervention, thrombolytics)  Consider prophylactic antiarrhythmics  Consider transfer to resuscitation centre
  • 22. THERAPEUTIC HYPOTHERMIA  Therapeutic hypothermia (TH) is a treatment strategy of rapidly reducing the patient’s body temperature after ROSC for the purposes of protection from neurologic injury.  The body temperature is typically reduced to 33° to 34° C for 12 to 24 hours. After ROSC the severity of the reperfusion injury can be mitigated, despite the fact that the initial ischemic injury has already occurred.  Reperfusion injury refers to tissue and organ system injury that occurs when circulation is restored to tissues after a period of ischemia, and is characterized by inflammatory changes and oxidative damage that are in large part a consequence of oxidative stress.
  • 23.  Neuronal cell death after I/R injury is not instantaneous, but rather a dynamic process.  TH may protect the brain by attenuating or reversing all of the following patho- physiologic processes:  Disruption of cerebral energy metabolism,  Mitochondrial dysfunction,  Loss of calcium ion homeostasis,  Cellular excito-toxicity,  Oxygen free radical generation  Apoptosis.
  • 24.  The current AHA guidelines for CPR and emergency cardiovascular care recommend 12 to 24 hours of TH for comatose survivors of out-of- hospital cardiac arrest due to VF or pulseless VT.  TH may also be considered for victims of in-hospital cardiac arrest and other arrest rhythms.  Methods for inducing TH:  specialized external or intravascular cooling devices for targeted temperature management  Combination of conventional cooling methods such as ice packs, cooling blankets, and cold (4° C) IV saline infusion.
  • 25.  Regardless of what method is used, effective achievement of target temperature may be aided by the use of a uniform physician order set for TH induction.  The current recommendation is to maintain TH for 12 to 24 hours.  Whether or not a longer duration of therapy could be beneficial is currently unknown.
  • 26. SELECTION OF CANDIDATES FOR TH  If a patient does not follow verbal commands after ROSC is achieved, this indicates that the patient is at risk for brain injury and TH should be strongly considered.  If a patient is clearly following commands immediately after ROSC, then significant brain injury is less likely and it is probably reasonable to withhold TH.
  • 27. PROBLEMS WITH TH  Shivering with TH induction  Bradycardia  “Cold diuresis” resulting in hypovolemia and electrolyte derangements  Hyperglycemia  Coagulopathy  Increased risk of secondary infection.  Complications are often not severe when they do occur  Risk of anoxic brain injury usually greatly outweighs the risks of complications.  fever must be avoided.  Fever is clearly detrimental in brain-injured patients because it increases cerebral metabolic rate.
  • 28.
  • 29. NEUROLOGIC PROGNOSTICATION  Neurologic prognostication is often extremely difficult in the first few days after resuscitation from cardiac arrest.  Neurologic prognostication immediately (e.g., first 24 hours) after resuscitation from cardiac arrest is especially unreliable.  Recommendation is to wait a minimum of 72 hours after ROSC before neurologic prognostication  If there are zero signs of neurologic improvement over 2 or more consecutive days, typically deem neurologic prognostication to be reliable at that time.
  • 30. THANK YOU Disclaimer: All images and data had been taken from AHA guidelines for CPR