acute narrow complex tachycardia Flashcards
1
Q
tachycardia
A
HR > 100
2
Q
narrow QRS
A
<120ms (3 small squares)
3
Q
Mx - adverse features
A
emergency synchronised direct current (DC) cardioversion
4
Q
Mx - haemodynamically stable patients with regular broad complex tachycardia
A
1/ vagal manœuvrés - carotid massage, valsalva manouvres
2/adenosine 6mg IV bolus
5
Q
Mx - AF new onset <48hrs
A
rhythm control
LMWH followed by
- flecanide if no structual heart disease
- amiodarone if structural heart disease
6
Q
Mx - AF onset >48hrs
A
rhythm control
metoprolol/bisoprolol/verapamil
or
digoxin if signs heart failure
+ anticoagulation
7
Q
adenosine contraindications
A
heart transplant
central line
asthma - use verapamil instead
