Question | Answer |
3rd degree AV block w/in or below His-purkinje system | class 1 for pacemaker |
asystole > 3s | class 1 for pacemaker |
escape rate < 40pbm | class 1 for pacemaker |
2nd degree AV block w/symptomatic bradycardia | class 1 for pacemaker |
alternating or bilateral BBB | class 1 for pacemaker |
bradycardia caused by a necessary drug therapy | class 2a for pacemaker |
asymptomatic 2nd degree AV block (both types) | class 2a for pacemaker |
symptomatic 1st degree AV block | class 2a for pacemaker |
recurrent syncope w/bradycardia | class 2a for pacemaker |
1st degree AV block >300ms | class 2b for pacemaker |
minimally symptomatic bradycardia | class 2b for pacemaker |
chronic bradycardia | class 2b for pacemaker |
neurally mediated syncope reproduced by tilt-table test | class 2b for pacemaker |
asymptomatic SA node dysfunction | class 3 for pacemaker |
bradycardia caused by unnecessary bradycardia | class 3 for pacemaker |
asymptomatic 1st or type 1 second degree AV block | class 3 for pacemaker |
asymptomatic w/positive response to carotid sinus massage | class 3 for pacemaker |
situational vasovagal syncope | class 3 for pacemaker |
recurrent syncope w/o bradycardia | class 3 for pacemaker |
AV block due to lyme disease | class 3 for pacemaker |
AV block due to drug toxicity | class 3 for pacemaker |
sustained VT | > 30s |
common cause of structural heart disease | MI |
cardiac arrest due to VT/VF w/o a transient or reversible cause | class 1 for defibrillator |
spontaneous sustained VT due to structural heart disease | class 1 for defibrillator |
syncope of undetermined origin w/sustained symptomatic VT | class 1 for defibrillator |
syncope of undetermined origin w/VF that can't be treated with drug therapy | class 1 for defibrillator |
nonsustained VT w/CAD | class 1 for defibrillator |
nonsustained VT w/MI | class 1 for defibrillator |
nonsustained VT w/LV dysfunction | class 1 for defibrillator |
inducible VF or VT | class 1 for defibrillator |
LVEF <30% | class 2a for defibrillator |
cardiac arrest assumed due to VF | class 2b for defibrillator |
long QT | class 2b for defibrillator |
symptomatic sustained VT while awaiting heart transplant | class 2b for defibrillator |
hypertrophic cardiomyopathy | class 2b for defibrillator |
syncope of undetermined origin w/ventricular dysfunction | class 3 for defibrillator |
syncope of undetermined origin w/structural heart disease | class 3 for defibrillator |
RBBB and ST elevation w/syncope or FHx | class 3 for defibrillator |
syncope of undetermined origin w/no structural heart disease | class 3 for defibrillator |
incessant VT/VF | class 3 for defibrillator |
transient/reversible VF | class 3 for defibrillator |
some psychiatric conditions | class 3 for defibrillator |
terminal illness | class 3 for defibrillator |
long QRS | class 3 for defibrillator |
inducible VT in bypass pts | class 3 for defibrillator |
pacing rate conversion factor | 60,000 |
depolarization and contractor of atria/ventricles in response to pacemaker stimulus | capture |
turns off sensing of pacemaker, forcing it to just pace | magnet mode |
pacing w/sensing, sensed events reset the pacing interval | damand pacing |
can sense/pace in both sets of chambers | dual chamber pacing |