Edition By Kathryn A. Booth, Thomas Edward O'Brien Chapter 1-15
Notes
Atrial Flutter -has a "saw tooth or picket fence" atrial pattern (no P waves, F-
waves in stead that may be in a ratio) between the QRS complexes. - notes
Atrial Fibrillation-Has "chaotic" atrial electrical activity (no P waves, f-waves
instead) with irregular R-R intervals. - notes
PJCs cause the rhythm to be irregular. The P wave is inverted if it can be seen. It
may occur before, during or after the QRS. The P wave will not be seen due to its
low voltage. - notes
Junctional Rhythm may have an inverted or absent P wave. The P wave may occur
before, during or after the QRS complex. The rate for this rhythm is 40-60 bpm. -
notes
Accelerated Junctional Rhythm may have an inverted or absent P wave. The P
wave may occur before, during or after the QRS complex. The rate for this rhythm
is 60-100 bpm. - notes
Junctional Tachycardia Rhythm may have an inverted or absent P wave. The P
wave may occur before, during or after the QRS complex. The rate for this rhythm
is 100-180 bpm - notes
Supraventricular Tachycardia presents with a "normal-narrow" appearing QRS
complex and a rate of greater than 150 bpm. Remember for heart rates
approaching 150 or higher, it will be very likely that the P wave will be buried. Be
prepared to increase the paper speed for this rhythm. - notes
, First Degree AV Block, the PR interval is constant and measures greater than 0.20
second. - notes
Second Degree AV Blocok Mobitz I (Wenkebach) has a cyclical prolonging PR
interval until the QRS is dropped. Then the cycle begins again. ***Remember the
clue "lengthen, lengthen drop Wenkebach. - notes
Second Degree (AV) Block has a constant PR interval with blocked QRS complexes
- notes
Second Degree (AV) Block has a constant PR interval with blocked QRS complex
(2) - notes
Third Degree (Complete) Heart Block, the P-P and R-R intervals are regular
(constant) but firing at different rates. - notes
T wave inversion, or negatively deflected T wave indicates ischemia and is usually
seen with ST segment elevation. - notes
T wave inversion with ST elevation on a 12-lead ECG is considered myocardial
injury, acute injury pattern, or acute - notes
Physiologic Q wave is normal and the width measures less than 0.04 second and
the depth measures less than one-third of the height of the R wave in that lead. -
notes