solved & updated
NSR
Rate: 60-100 bpm; Rhythm: normal; PR: 0.12-0.2 secs (3-5 blocks); QRS: 0.04-0.10
secs (1-3 blocks)
sinus bradycardia
Rate: slow (<60 bpm); Rhythm: regular; PR: normal (0.12-0.2); QRS: normal (0.04-
0.10)
sinus tachycardia
Rate: fast (>100 bpm); Rhythm: regular; PR: normal (0.12-0.2); QRS: normal (0.04-
0.10)
*QT interval shortens as rate increases
PACs
, Rate: usually normal (depends on underlying rhythm); Rhythm: irregular; PR:
normal-longer; QRS: short (0.10 secs or less)
*p wave comes early sometimes
SVT
Rate: fast (150-250 bpm); Rhythm: regular; PR: normal (0.12-0.2); QRS: normal
(0.04-0.10)
difference
The __________ between SVT and atrial tachycardia:
SVT- Rate: 100-280 bpm
AT- Rate: up to 150 bpm
atrial flutter
Rate: fast (250-350 bpm); Rhythm: regular-irregular; PR: not measurable; QRS:
normal (0.04-0.10)
*sawtooth pattern between QRS complexes
atrial fibrillation
Rate: very fast (350 or greater); Rhythm: irregular; PR: absent; QRS: normal- wide
(if there is a conduction delay)
*P wave is missing and replaced with a fine wavy line
1st degree hb
Rate: ~60 bpm (varies depending on underlying rate); Rhythm: regular; PR:
prolonged (>0.20); QRS: normal (0.04-0.10)