interpretation of the ECG Flashcards
what is it called when there is a ‘saw tooth appearance of the P waves?
atrial flutter
what is it called when there is an absence of P waves on an ECG?
junctional tachycardia
how do you notice ventricular tachycardia on an ECG?
the QRS segment becomes broad and T waves are difficult to identify
what the condition called when there is an ‘M’ shaped P wave (or bifid)?
left atrial hypertrophy (P-Mitrale)
what is it called when there is an elevated P wave?
right atrial hypertrophy
what is the normal length of a P wave (the PR interval)
between 0.12-0.2 seconds
what does a prolonged P-R interval indicate?
delayed A-V conduction
what is the normal duration of the QRS interval?
less than 0.12 seconds
what is the normal properties of a Q wave?
less than 40 ms (0.04s) and less than 2mm in depth
what are a few causes of low voltage of the QRS interval?
hypothyroidism, myocarditis, pericarditis and pericardial effusion
in which lead would you see an R wave larger than 25mm in Left ventricular hypertrophy?
V5
