Final - 8 Perfusion A (graphs) Flashcards
(49 cards)
BPM of SA node
60-100
BPM of AV node
40-60
BPM for R bundle branch
20-40
BPM of bundle of His
<40
BPM of L bundle branch
20-40
BPM of perkinje fibers
20-40
The _____ interval represents the length of time it takes for the electrical impulse to travel form the atria to the ventricles
PR
The _____ complex represents the depolarization of the ventricles.
QRS
The _____ wave represents the repolarization of the ventricles. To complete the cycle.
T
1 box - _____ seconds
0.04 seconds 5 small boxes = 0.2 seconds 1 second = 0.2
explain where to put electrodes
snow (RA) over grass (RL) smoke (LA) over fire (LL) chocolate on the heart (V1)
PR > _____ = heart block
> 0.2
QRS > _____ = PVC
> 0.12
H’s & T’s to rule our…help to treat reversible causes
5 H’s 4 T’s - hypovolemia - hypoxia - H+ ion (acidosis) - hyper/hypokalemia - hypothermia - Tension pneumothorax - toxins - thrombosis pulmonary - thrombosis coronary
calculation for CO
SV * HR
normal PR interval
0.12 - 0.2 (3-5 small boxes)
normal QRS duration
< 0.12 (<3 boxes)
What shows atrial depolarization
P wave
What shows ventricular depolartization
QRS complex
What shoes ventricular repolarization
T wave
how to treat sinus tachycardia
beta-blocker Fast HR = increased myocardial demand & decreases CO
treatment of SVT
- valsalva maneuver (ice on face) 2. adenosine 3. synchronized cardioversion
treatment of atrial flutter
- treat the same = drugs (variety, blood thinner, anticoagulants: warfarin) 2. scheduled cardioversion 3. ablation
treatment of atrial fibrillation
synchronized cardioversion
