Arrhythmias Flashcards
Sinus bradycardia can lead to what?
Inadequate cardiac output and often precede electrical instability of the heart.
what is common when the sinus rate is very slow?
Etopic beats from av node and ventricles may fire to maintain cardiac output.
what are some serious causes ?
- hypothermia
- sa node disease
- AMI may stimulate vagal tone
- Intercranial preasure
- morphine
- quindine
- Digitalis
What is the treat meant for brady?
- Focus on patient tolerence and look for the cause.
- If symptomatic the consider atropine, then pacing to increase ventricular rate.
Sinus tachycardia p waves are
upright
Sinus tachycardia pr is
120-200 milli secs
Sinus tachycardia qrs rate is
40 - 120 ms
Sinus tachycardia rhythm is
Regular
Sinus tachycardia rate is
100-150 bpm
Sinus tachycardia causes
- pain
- fever
- hypoxia
- hypovelimia
- exercise
- epi
- amphetmines
- cocain
- cacain
- caffine
- nicotine
- alchol
what happens to cardiac output between 120-140 beats per min?
its reduced, ventricles dont have time to refill.
Sinus dysrhthmia rhythem is
slight variant
Sinus dysrhthmia p waves are
upright
Sinus dysrhthmia rate
100-150 bpm
Sinus dysrhthmia Pr interval is
120-200ms
Atrial flutter P waves
saw tooth
Atrial flutter Pr interval
Variable
Atrial flutter qrs duration
40- 120 ms
Atrial flutter rate
- The atrial rate is usually 240-320 bpm
- ventricular rate commonly 60- 160 bpm
Atrial fibrilation p waves
fibrilating
Atrial fibrilation rhythem is
irregularly irregular
Atrial fibrilation rate
variable
Atrial fibrilation key to identifying
is it is highly irregularly irregular
Super ventricular tachycardia P wave is
unable to be seen
Super ventricular tachycardia R to R is
regular
Super ventricular tachycardia qrs is
. 4- .12 ms
Super ventricular tachycardia rate is
150-180 bpm
Super ventricular tachycardia has a tendency to ….
Come and go and therfore gets its name Paroximal svt ( meaning in spasms) aka re-entry svt
Super ventricular tachycardia how urgent is svt
it should be treated promptly because ventricles cant refill reducing cardiac output
Premature atrial complex is a
complex within another rhythm.
Premature atrial complex occurs when
earlier in time than the next expected complex
Premature atrial complex makes the rhythm what..
Irregular
Premature atrial complex will have a p wave that is
different from other in morphology
wtih Premature atrial complex , the p wave is not always
conducted to the ventricles.
What is a non conducted p wave
P wave conducted early and not followed by a qrs.
How to differentiate heart blocks from a pac
- Pac’s occure infrequetly and in no pattern
- Heart blocks pp intervals are constant
Premature atrial complex causes
- cafine
- heart dissease
Wandering atrial pace maker moves from sa node to
various locations of the heart
Wandering atrial pace maker rate is
60 -100bpm
Wandering atrial pace maker rhythem is
slightly irregular
Wandering atrial pace maker p wave is
upright but various morphology
Wandering atrial pace maker- what is required to call it that officaly
At least 3 different morphology
Wandering atrial pace maker is common in patients with
Lung disiease
Wandering atrial pace maker treatment is …
usually not indicated
Multifocal atrial tachycardia has a rate of
more than 100 bpm
Multifocal atrial tachycardia rhythm is
regular irregular
Multifocal atrial tachycardia R to R….
varies depending on site of pace maker
with Multifocal atrial tachycardia, if rate exeeds 150 bpm the p waves ….
may not be visible , thus the only indication may be the irregularity associated with the varying sites of origin
Multifocal atrial tachycardia treatment ….
Not attempted in field. svt treatment not affective with Multifocal atrial tachycardia
