ACLS Flashcards
When should the primary assessment occur before the BLS assessment?
If the pt is conscious
How should you maintain an open airway in an unconscious patient?
- Head tilt-chin lift
- oropharyngeal/nasopharyngeal airway
- Advanced airway management
What are the types of advanced airway management?
- Laryngeal mask airway
- Laryngeal tube
- Endotracheal tube
What should you confirm when using advanced airway management?
- Proper integration of CPR and ventilation
- Confirm proper placement
- Secure the airway
- Monitor airway placement
What is the best way to confirm/monitor airway placement?
Continuous waveform capnography
Note: Physical exam should be complimentary.
What % supplemental oxygen should be used in pts with cardiac arrest?
100%
What % supplemental oxygen should be used in pts undergoing a primary assessment and not in cardiac arrest?
Adjust oxygen level to achieve O2 saturation of 95% to 98%
Note: In acute coronary syndrome you should target an O2 saturation of 90%.
How should you monitor adequacy of ventilation?
- Physical exam (look for chest rise and cyanosis)
- Quantitative waveform capnography
- Oxygen saturation
Note: Avoid excessive ventilation.
What value indicates adequate CPR quality when using quantitative waveform capnography?
10 mm Hg CO2 (at end expiration)
Note: If less than 10 mm Hg, attempt to improve CPR quality (rare to get ROSC in this situation).
While performing CPR, the end expiration CO2 rapidly increases to more than 25 mm Hg…
This may indicate ROSC (check for consciousness/pulse at next pulse check)
What should the intra-arterial diastolic pressure be during adequate quality CPR?
20 mm Hg or more
Note: If less than 20 mm Hg, attempt to improve CPR quality.
What are the components of the primary assessment?
- Airway
- Breathing
- Circulation
- Disability (consciousness, pupil dilation)
- Exposure (trauma, bleeding, burns, medical alert bracelets)
What are the primary assessment levels of consciousness?
AVPU:
- Alert
- Voice
- Pain
- Unresponsive
1st degree heart block
Note: PR interval is greater than 0.2 seconds (1 big box).
2nd degree AV block (type 1), AKA Wenkebach
2nd degree AV block (type 2)
2:1 block (a subtype of 2nd degree type 2 AV block where every other QRS complex is dropped)
3rd degree AV block
Treatment for stable bradycardia
- Identify and treat underlying cause
- Monitor and observe
First line treatment for unstable bradycardia
Atropine (1 mg bolus, repeated as needed every 3-5 min to a max of 3 mg)
Second line treatment for unstable bradycardia
- Transcutaneous pacing
- Dopamine infusion
- Epinephrine infusion
Note: Consider expert consultation and/or transvenous pacing.
When should bradycardia be considered unstable?
- Hypotension
- Acutely altered mental status
- Signs of shock
- Ischemic chest discomfort
- Acute heart failure
What is the adult dopamine dose for unstable bradycardia?
5-20 mcg/kg dopamine per minute (titrated to pt response)
What is the adult epinephrine dose for unstable bradycardia?
2-10 mcg epinephrine per minute (titrated to pt response)
Common causes of unstable bradycardia
- Myocardial ischemia/infarction
- Drugs
- Hypoxia
- Electrolyte abnormalities
What drug overdoses should you think about in the setting of unstable bradycardia?
- Calcium-channel blockers
- Beta blockers
- Digoxin
What are examples of calcium channel blockers?
- Amlodipine/nifedipine
- Diltiazem
- Verapamil
What electrolyte abnormality should you think about in the setting of unstable bradycardia?
Hyperkalemia
Sinus tachycardia (100-150 bpm)
Supraventricular tachycardia (narrow complex and >150 bpm)
Wide complex tachycardia (monomorphic V tach)
Wide complex tachycardia (monomorphic V-tach)
Irregular wide complex tachycardia (polymorphic V-tach)
When should tachycardia be considered unstable?
- Hypotension
- Acutely altered mental status
- Signs of shock
- Ischemic chest discomfort
- Acute heart failure
Treatment for unstable tachyarrhythmia
Synchronized cardioversion
Note: If regular, narrow complex, can consider adenosine.
If persistent unstable tachyarrhythmia following synchronized cardioversion, whats the next step
- Continue looking for underlying cause
- Increase energy level for next cardioversion
- Consider adding an anti-arrhythmic drug
- Consider expert consultation
What is considered a widened QRS complex?
0.12 seconds or greater
Treatments to consider for stable wide complex tachyarrhythmia
- Adenosine (ONLY if regular and monomorphic)
- Antiarrhythmic infusion
- Expert consultation
Treatment for stable narrow complex tachyarrhythmia
- Vagal maneuvers (if regular)
- Adenosine (if regular)
- Beta blocker or calcium-channel blocker
- Expert consultation
Adult adenosine dose for tachyarrhythmia
6 mg rapid IV push (followed by a normal saline flush)
followed by
12 mg IV push + flush (if needed)
What are the common antiarrhythmic infusions used for stable wide-QRS complex tachycardia?
- Procainamide
- Amiodarone
- Sotalol
Adult procainamide dose for stable wide-QRS tachycardia
20-50 mg per minute until endpoint is reached
then
1-4 mg per minute maintenance
What is the maximum dose of procainamide for stable tachyarrhythmia?
17 mg/kg
What are the endpoints for procainamide when you should switch to maintenance infusion?
- Hypotension ensues
- QRS duration increases by 50% or more
- Maximum dose given (17 mg/kg)
When should procainamide be avoided?
- Prolonged QT
- CHF
Adult amiodarone dose for stable wide-QRS tachyarrhythmia
150 mg over 10 minutes (repeated as needed if V-tach recurs)
then
1 mg per minute maintenance (for the first 6 hours)
Adult sotolol dose for stable wide-QRS tachyarrhythmia
100 mg over 5 minutes
When should sotalol be avoided?
Prolonged QT
What are the shockable rhythms?
- Ventricular fibrillation
- Monomorphic V-tach
What are the non-shockable rhythms in the setting of cardiac arrest?
- PEA (pulseless electrical activity)
- Asystole
Ventricular fibrillation
Asystole
How far should each compression depress the sternum?
At least 2 inches (5 cm)
How frequently should compressors switch?
Every 2 minutes (or sooner, if fatigued)
What should the compression:ventilation ratio be during CPR?
30:2 (no advanced airway)
Note: 1 breath every 6 seconds if there is an advanced airway (with continuous compressions).
What charge strength should the defibrillator adminster?
120-200 J (if biphasic)
360 J (if monophasic)
What drugs are routinely administered during ACLS?
- Epinephrine
- Amiodarone
- Lidocaine
Adult epinephrine dose during CPR
1 mg (every 3-5 minutes)
Adult amiodarone dose during CPR
300 mg (first dose)
then
150 mg (second dose)
Adult lidocaine dose during CPR
1-1.5 mg/kg (first dose)
then
0.5-0.75 mg/kg (second dose)
CPR algorithm for shockable rhythm
- Start 30:2 CPR
- Shock as soon as possible
- CPR (2 min)
- Shock again (if shockable)
- Administer epinephrine during next 2 min CPR
- Shock again (if shockable)
- Administer amiodarone or lidocaine during next 2 min CPR
Note: Repeat steps 4-7 (stop meds when maximum doses reached).
Reversible causes for cardiac arrest
- Hypovolemia
- Hypoxia
- Hydrogen ion (acidosis)
- Hypokalemia or hyperkalemia
- Hypothermia
- Tension pneumothorax
- Tamponade, cardiac
- Toxins
- Thrombosis, pulmonary
- Thrombosis, coronary
CPR algorithm for nonshockable rhythm
- Start 30:2 CPR
- Apply pads as soon as available and check rhythm
- Administer epinephrine immediately (if not shockable) and do 2 more min CPR
What are the components of the initial stabilization phase after ROSC is achieved?
- Manage airway
- Manage respiratory parameters
- Manage hemodynamic parameters
- Get 12-lead ECG
How should you manage the airway after ROSC?
Early placement of an endotracheal tube is recommended
How should you manage respiratory parameters after ROSC?
- Increase breaths to 10 breaths per minute
- Target SpO2 of 92-98%
- Target PaCO2 of 35-45 mm Hg
How should you manage hemodynamic parameters after ROSC?
- Target systolic BP > 90 mm Hg
- Target mean arterial pressure > 65 mm Hg
When should you consider emergent cardiac intervention after ROSC?
- STEMI
- Unstable cardiogenic shock
- Pt requiring mechanical circulatory support
Targeted temperature management
Cooling pts to 32-36 degrees celsius for 24 hours after ROSC to preserve brain function
What are the main components of continued management following ROSC for pts that are unable to follow commands?
- Targeted temperature management
- Head CT
- EEG monitoring