Heart Rate
Can be easily used to calculate heart Rate
EKG strip
Rhythms can be ______ or _______
Regular
Irregular
No more than 2.5 mm in height (2.5 small boxes)
No more than 0.11 sec in duration (~2.5 small boxes)
Positive in leads I, II, AVF, and V2-V6
P wave characteristics
Mid-axillary line on teh same horizontal level as V4 and V5
V6
RA(RIGHT ARM)
White
When the rhythm is regular, the heart rate is ______ divided by the large squares between the QRS complexes.
300
60-100 bpm
all complexes normal and evenly spaced (P, QRS, T)
Normal Sinus Rhythm
Spread of electrical conduction through the IVS and Ventricles
represents septal depolarization that occurs from left-to-right; it's the
QRS complex
Midclavicular line in the fifth intercostal space
V4
LL(LEFT LEG)
Red
When the rhythm is irregular you count the number of _____ waves in a 6 second strip and multiply by ______.
R and 10
Sinus Arrest
represents septal depolarization that occurs from left-to-right; it's the first downward deflection of the complex; its always negative
Q wave
4th intercostal space next to the sternum on the left side
V2
RL(RIGHT LEG)
Green
Infant Normal Heart Rate
100-300 BPM
all complexes normal but rhythmically irreg
- normal finding (esp in young pts) that has to do with breathing (rate: inhale-increase, exhale-decrease)
Sinus Arrhythmia
represents early ventricular depolarization; it's the first positive waveform following
P wave
R wave
Anterior axillary line on teh same horizontal level as V4
V5
LA(LEFT ARM)
Black
Child Normal Heart Rate
80-100
<60
normal sinus rhythm
Sinus Bradycardia
represents late ventricular depolarization; it's the first negative waveform following the R wave
S Wave
4th intercostal space next to the sternum on the right side
V1
What are the Augmented Leads
AVF AVL AVR