ECG Flashcards
PR interval length?
0.12 - 0.2 secs
ST elevation in lead V4 indicates what location of MI?
Anterior
What should be given in chronic AF?
rate limiting drug and anticoagulation
What are U waves?
deflections following a T wave
Complete heart block shows what changes on an ECG?
absence of AVN conduction, typically bradycardia with uncoupled atrial and ventricular activity
treatment of symptomatic mobitz type I
atropine
If bradycardia is symptomatic or less than 40bpm then treat with…
atropine
What two rhythms are shockable?
VF and pulseless VT
Causes of Mobitz type II
anterior MI, Surgery, SLE, rheumatic fever, hyperkalaemia
ST elevation in lead III indicates what location of MI?
Inferior
ST elevation in lead aVL indicates what location of MI?
Lateral
Pathological Q waves may occur when…
There has been recent infarction
Hyperkalaemia may cause which ECG changes?
absent P waves, tall tented T waves, widened QRS
ST elevation in lead I indicates what artery in the MI?
Circumflex
ECG changes in Mobitz type II heart block?
intermittent non-conducted P waves with no PR prolongation. Usually 2:1 or 3:1
HR is determined in bpm as what with the large squares on the ECG paper?
300/no. of large squares between beats
300/no. of large squares between R-R
What happens in the TP segment?
Ventricular Diastole
QT interval length?
0.36 -0.44 secs
What are pathological Q waves?
> 0.04s wide and >2mm deep
The WilliaM pattern in V1 and V6 can be seen in which condition?
Right bundle branch block
Normal p wave length
0.08-0.1 sec
ST elevation in lead V3 indicates what location of MI?
Anterior
Notched QRS complexes indicate…
Left bundle branch block
ST elevation in lead V1 indicates what location of MI?
Septal
Which Lead normally provides the ECG rhythm strip?
Lead 2
What can be seen in First degree heart block?
prolonged PR interval >200ms
What are pathological Q waves a sign of…
infarction
Hypokalaemia may cause which ECG changes?
small T waves, prominent U waves