ECG Flashcards
What is the p wave?
Atrial DEPOLARIZATION
What is the QRS complex?
Ventricular depolarization and atrial repolarization.
“Repolar-Relax”
What is the T wave?
Ventricular repolarization
1st degree heart block
Increased time between P and QRS start
-It just stays elongated until the QRS is dropped. It doesn’t get progressively longer
-Continue exercise but monitor
2nd Degree heart block type 1
“Wenckebach”
-PR interval gets progressively longer until the QRS is dropped
-Disease of the AV node
-Monitor and continue with lower intensity
2nd degree heart block type 2?
“Mobitz II”
-QRS is randomly dropped. The PR is constant
-STOP AND MONITOR
-There is no pattern
-Disease of the Bundle of His and Purkinje Fibers
3rd degree AV block?
EMERGENCY . Stop immediately
-QRS is WIDE AND BIZARRE
-No relationship at all of the PR intervals and they are constantly changing
What is the BPM for atrial tachycardia?
100-250bpm
(NOT AN EMERGENCY)
What is the BPM for atrial flutter?
250-350
Remember- supraventricular arrhythmias are non emergent. Ventricular arrhythmias ARE.
-With supraventricular (atrial) arrhythmias there will still be a QRS
MULTIPLE P WAVES
BPM for atrial fibrillation?
400-600 BPM
What is a PVC?
Heartbeat is initiated by the purkinje fibers
-Will see a skipped beat or palpitations
-The ventricles contract before the atria
-No P wave and the QRS will be wide and bizarre
Bigeminy?
1 normal beat, 1 PVC
Trigeminy?
2 normal beats followed by 1 PVC
Multifocal PVC?
STOP EXERCISE
-more than 1 PVC is present and 2 do not appear to be similar in configuration
Couplet?
STOP EXERCISE.
2 consecutive PVC’s together with normal beat between them
