6: EKG Interpretation Flashcards
Rate and regularity is measured by counting _____.
Rate and regularity is measured by counting the number of QRS Complexes.
What are 2 ways to count the QRS Complexes for measuring rate and regularity?
Count the QRS Complexes in 2 of the 3-second areas (6 seconds total) and multiply x 10. Number sequence (300, 150, 100, 75, 60, 50). Find a QRS Complex that falls on a dark line. The next dark lines represents 300, then 150, and so on. Count down until you find the next QRS Complex, which represents the heart rate.
The number sequence for QRS Complexes (300, 150, 100, 75, 60, 50) has what limitation?
It can be used for regular rhythms only.
Regularity of a heart rate is determined by looking at which portion of the EKG?
QRS Complex only
What do you consider in P Wave morphology?
Are there P Waves?
Is there 1 P Wave for every QRS Complex?
Are their shapes all the same?
How do you assess the PR Interval?
How long is it?
Is it within normal limits?
Are all intervals the same length?
If different lengths, look for a pattern.
How do you assess the QRS Complex?
What are their shapes? Are they all the same? Are they within normal limits? How wide are they? Note R-wave progression, amplitude, and axis (12-lead EKG only).
How do you assess ST Segment morphology?
Flat or sloping?
Is it isoelectric (baseline), elevated, or depressed?
How do you assess T Wave morphology?
What is the shape?
Is it even, flat, pointed, biphasic, or inverted?
T/F The QT Interval can change with time or medication use.
True