Which of the following are effects of sodium bicarbonate in the treatment of cardiac arrest?:
a) Generates CO2 which diffuses intracellularly.
b) Normalises pH with a positive inotropic effect on myocardium.
c) Improves circulation in swollen brain due to its osmotically – active sodium load.
d) Produces a shift to the right in the oxygen dissociation curve, facilitating the release of oxygen to the tissues.
Which of the following statements is/are CORRECT regarding adrenaline used in the treatment of cardiac arrest?:
a) Adrenaline 1 mg IV should be given after the first loop of chest compressions.
b) Adrenaline has both alpha and beta adrenergic effects.
c) There is no evidence of long-term benefit from the use of adrenaline.
d) Adrenaline 1 mg IM is the first line treatment of choice for anaphylaxis.
Regarding the use of Magnesium in the treatment of cardiac arrest:
a) Increases acetylcholine release and reduces the sensitivity of the motor endplate.
b) Is indicated for ventricular tachycardia.
c) Improves the contractile response of the stunned myocardium.
d) Can reverse digoxin toxicity associated with hypomagnesaemia.
Regarding the use of Amiodarone in the treatment of cardiac arrest:
a) Is indicated after the third shock if there is pulseless electrical activity.
b) Slows the cardiac rhythm by prolonging the action potential and refractory period.
c) Has a negative inotropic action by a non – competitive beta – blocking effects.
d) Amiodarone 150 mg IV is the recommended dose for broad complex ventricular tachycardia.
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