99 Medical Cardiac Arrest Flashcards
What are the INDICATIONS for the MEDICAL CARDIAC ARREST medical directive
Which cardiac arrests are 1 analyse and go
Trauma
Pregnant over 20 weeks
Hypothermia
Airway Obstruction
Non-opioid OD
Reversible causes
With repeated pulseless VT/VF when do we leave scene?
Following 3 rounds of EPI (or 3 shocks, no access)
What is refractory VF/VT
VF/VT after 3 consecutive shocks
What are the Hs in Hs/Ts
Hypoxia
Hypovolemia
Hypoglycemia
Hydrogen
Hyper/Hypokalemia
Hypo/Hyperthermia
What are the Ts in Hs/ Ts
Thrombosis (cardiac and pulmonary)
Tamponade
Tn Pneumo
Trauma
Toxins
What are the CONDITIONS for EPI in CARDIAC ARREST?
24 hours
altered
IM: anaphylaxis
What are the CONTRAINDICATIONS for EPI in CARDIAC ARREST?
allergy
What is the dose of EPI in CARDIAC ARREST for ANAPHYLAXIS
0.01mg/kg (MAX 0.5mg)
What is the dose of EPI in CARDIAC ARREST for 24 hours to 12 years IV/IO/CVAD?
0.01mg/kg (MIN 0.05 mg)
0.1ml/kg (MIN 0.5 ml)
1:10,000 epi
What is the dose of EPI in CARDIAC ARREST for 24 hours to 12 years ETT?
0.1mg,ml/kg (MAX 2mg ) (MIN 0.5mg)
1:1000 epi
What is the dose of EPI in CARDIAC ARREST for ADULT IV/IO/CVAD?
1mg
What is the dose of EPI in CARDIAC ARREST for ADULT ETT?
2mg
What is the interval between doses for EPI in CARDIAC ARREST?
4 minutes
What are the CONDITIONS for AMIO in CARDIAC ARREST?
24 hours
altered
VF/VT
How do we round epinephrine for cardiac arrest?
Nearest 0.05mg
What are the CONDITIONS for LIDO in CARDIAC ARREST?
24 hours
altered
VF/VT
What is the max initial dose of AMIO in CARDIAC ARREST?
300mg
What is the max second dose of AMIO in CARDIAC ARREST?
150mg
What are the routes for amiodarone?
IV/IO/CVAD
What is the interval between doses for AMIO in CARDIAC ARREST?
4 minutes
What is the pediatric dose (24 hours to 12 years) formula for AMIO in CARDIAC ARREST?
5mg/kg
How does amiodarone come?
150ml/3ml
How MANY doses are given of AMIO in CARDIAC ARREST?
2
What is the dose of LIDO in CARDIAC ARREST for PEDIATRIC IV/IO/CVAD?
1mg/kg
What is the dose of LIDO in CARDIAC ARREST for PEDIATRIC ETT?
2mg/kg
What is the initial dose of LIDO in CARDIAC ARREST for ADULT (12+) IV/IO/CVAD?
1.5mg/kg
What is the SECOND dose of LIDO in CARDIAC ARREST for ADULT (12+) IV/IO/CVAD?
0.75mg/kg
What is the initial dose of LIDO in CARDIAC ARREST for ADULT (12+) ETT?
3mg/kg
What is the SECOND dose of LIDO in CARDIAC ARREST for ADULT (12+) ETT?
1.5mg/kg
How MANY doses are given of LIDO in CARDIAC ARREST?
2
What is the interval between doses for LIDO in CARDIAC ARREST?
4 minutes
For LIDO, how do we remember the ETT dose?
Double to IV/IO/CVAD dose
What is the infusionof NaCL given in a Cardiac Arrest?
20ml/kg
What is the max volume of NaCl given in a Cardiac Arrest?
2000ml
What are extenuating circumstances to patch early for a TOR?
Prolonged Egress
Prolonged Transport
Significant clinical limitations
What happens during patch failure?
Transport to closest, most appropriate hospital
Why should NaCl be considered during PEA
NaCl increases preload, which increases force of contraction
When is a TOR applicable for Medical Cardiac Arrest?
No reversible causes
16 years old
altered
Not witnessed by medics
No ROSC
No Defib
How does Lidocaine come?
100mg/5ml
What route is preferred for EPI in cardiac arrest?
IV/IO
ETT if IV/IO is delayed by 5 minutes
What is the chemical name for Sodium Bicarb?
NaHCO3
What class of medication is epinephrine?
sympathomimetic
What class of medication is Amiodarone
Class 3 antiarrhythmic (potassium channel blocker)
What class of medication is Lidocaine?
Class 1b antiarrhythmic (Sodium channel blocker)
What class of medication is Sodium Bicarbonate?
Buffer/alkalizer/electrolyte
What are the indications of Sodium Bicarbonate
severe acidosis, prolongued VSA
How does Sodium Bicarbonate work?
Increases pH
Decreased Potassium in blood
What medication should not be in the same line as Sodium Bicarbonate?
Dopamine
Why is Sodium Bicarb not used in Hyperkalemia?
It works slower and the ion shift is not sustained.
How is sodium bicarbonate stored?
50mEq/50ml Preload
What actions of epinephrine is useful during cardiac arrest?
A1 vasocontriction
B2 Positive inotrophy, chronotrophy and dromotrophy
How does amiodarone work?
1: Blocks sodium channels (SLOW conduction)
2: Beta blocking effects (decrease HR)
3: Blocks Potassium to nodal cells
-PROLONG repolarization
-lengthens action potential
-increases refractory period
4: Blocks calcium
How does Lidocaine work in Cardiac Arrest?
Increases time for the myocyte to reach threshold potential (slows conduction)
Decreases Ventricular irritability
Terminate re-entry pathways
Class 1 antiarrhythmics
Sodium Channel Blocker
Class 2 antiarrhythmics
Beta Blocker
Class 3 antiarrhythmics
Potassium Channel Blocker
Class 4
Calcium Channel Blocker
What happens in phase 0 of the cardiac action potential?
Rapid Sodium in thorugh FAST Sodium channels
What happens in phase 1 of the cardiac action potential?
Potassium Out
Chloride Out
What happens in phase 2 of the cardiac action potential?
Slow Calcium in
Potassium Out
What happens in phase 3 of the cardiac action potential?
Potassium Out
What happens in phase 4 of the cardiac action potential?
Potassium out @ 90mV
Resting potential
What treatments can be given to 24 hours to 8 years old undergoing Cardiac Arrest?
Epi IV/IO/CVAD 0.01mg/kg
Epi ETT 0.1mg/kg (MAX 2mg) (MIN 0.5mg)
amio 5mg/kg (MAX 300mg, 150)
lidocaine IV/IO/CVAD 1mg/kg
Lidocaine ETT 2mg
NaCl (20ml/kg, reassess 100ml)
Defib 2J/kg, 4J/kg
Adjusted CPR
What treatments can be given to an 8-12 year old undergoing cardiac arrest?
Epi IV/IO/CVAD 0.01mg/kg
Epi ETT 0.1mg/kg (MAX 2mg) (MIN 0.5mg)
amio 5mg/kg (MAX 300mg, 150)
lidocaine IV/IO/CVAD 1mg/kg
Lidocaine ETT 2mg
NaCl (20ml/kg, reassess 100ml)
Adult Defib
2 handed CPR
What treatments can be given to an ADULT undergoing cardiac arrest?
Epinephrine IV/IO/ETT 1mg
Epinephrine ETT 2mg
Amio 300mg, 150)
Lidocaine IV/IO/CVAD 1.5 /kg, 0.75 mg/kg Lidocaine ETT 3mg/kg, 1.5mg/kg
NaCl (20ml/kg, reassess 250ml)
Adult Defib
2 handed CPR