Cardiac drugs

Question 1

Broad complex tachycardia are treated with three treatment options

Answer 1

1- if there is no pulse then follow the protocol for ventricular fibrillation / ventricular tachycardia cardiac arrest.
2 – If there is a pulse and patient displays adverse signs, expert help and cardioversion is indicated.
3 – If there are no adverse signs, antiarrhythmic therapy is indicated. E.g. Procainamide, amiodarone, lidocaine.

Question 2

Adrenaline differs from noradrenaline

Answer 2

By having an extra methyl group

Question 3

Adrenaline commonly used with LA at conc 1:80000?

Answer 3

True

Question 4

Isomers of adrenaline

Answer 4

D- & L- adrenaline.

D- is 50-100x less potent.

Question 5

Adenosine components

Answer 5

Adenine & d-ribose.

Blocks re-entry circuits for anti arrhythmic effect.
Depress cardiac contractility via binding to adenosine A1-R. Vasodilatation via binding to low affinity adenosine A2-Rs.