Please enable JavaScript.
Coggle requires JavaScript to display documents.
ECG - Coggle Diagram
ECG
Anatomy of ECG
-
-
Q wave
negative deflection, depolarization of intra ventricular septum before contraction
-
represent myocardial infarction- when height of Q wave >25% than R wave // greater in 0.04 seconds in height
-
P wave
-
normal duration <0.11 sec, > 0.12 sec= intraarterial conduction defect
T wave
-
-
upright in leads I, II and V3-V6
-
QT interval
-
Long QT- caused by drug, electrolyte abnormalities, myocardial ischaemia
-
-
How ECG work?
-
-
when cell membrane depolarize, votage changes and current flow
ECG structure
Atrial muscle mass smaller, create small deflection, represented by P wave
Ventricular muscle mass larger, bigger deflection, represented by QRS
-
-
-
-