MCQ questions Flashcards
what is the usual electrical capture when transcutaneous pacing?
50-100 mA
is sodium bicarbonate usually recommended?
no - exacerbates intracellular acidosis + has many side effects
is adrenaline associated with long term benefits in cardiac arrest?
no - however short term benefits warrant its continuous use
what receptors does adrenaline act on?
alpha and beta receptors
what is the effect of adrenaline on the vascular system?
systemic vasoconstriction
when should PPE be worn during CPR?
if the patient has TB or SARS
what effect does sodium bicarbonate have on oxygen delivery?
Shifts the oxygen dissociation curve to the left, inhibiting release of oxygen to the tissues.
What should you do if there are signs of electrical activity during CPR on the monitor?
If an organised rhythm is seen during a 2 min period of CPR, do not interrupt chest compressions to palpate a pulse unless the patient shows signs of life suggesting ROSC.
is a PaCo2 of 5.3 normal in a patient having an acute asthma attack?
Although this is normal for non-asthmatic patient, it is one of the indicators that the patient has life-treating asthma and becoming exhausted. PaCO2 is normally low in an asthma attack due to hyperventilation.
what is the effect of Mg in asthma attack?
induces bronchodilation
why may higher initial defibrillation energies be required in asthma?
Hyperinflation increases thoracic impedance. Higher energies should be considered if the first shock fails
if the rhythm changes from asystole to VF during the 2 min cycle, should a shock should be given?
CPR should be continued until the end of the 2 min cycle and then a shock delivered.
what is an absolute contraindication for thrombolysis?
surgery in last 3 weeks
what range of cap glucose should the patient be maintained at after cardiac arrest?
Based on the available data and expect consensus, following ROSC, maintain blood glucose at < 10 mmol L-1 and avoid hypoglycaemia (< 4.0 mmol L-1).
is VF associated with spontaneous circulation?
no
