Heart stuff Flashcards
what comes under Non ST elevation ACS?
NSTEMI
Unstable angina
what is unstable angina?
crescendo angina
not on exertion
long episode
what is LBBB on ecg?
dominant S wave in v1
broad R wave in v6 and lat leads
what should new LBBB make you think?
?ACS
what are anterior leads? supply?
V1-4
LAD
what are lateral leads? supply?
V5-6
circumflex (off LAD)
what are inferior leads? supply?
I, II, avF
RCA
what are posterior leads? supply?
ST depression in anterior leads
RCA
what is s1 QT3?
S wave in lead I
deep Q wave
T wave inversion
lead III
stemi Tx?
aspirin 300mg
GTN
analgesia
PCI in 12hrs of symptoms/120mins to table
normal QT length?
0.35 - 0.44
what is P wave in ECG?
depol of atria
what is PR interval in ECG?
AV node delay (ventricles fill)
what is QRS in ECG?
depol of ventricles
what is ST in ECG?
ventricles repolarising
what is T wave in ECG?
ventricules replarising
where is SA node?
in RA
normal length of QRS?
0.12
normal length of PR?
0.12-0.20
how to calculate HR on ecg?
qrs in 30 large square x10
where do ectopic come from if QRS is narrow?
atrial
where do ectopic come from if QRS is broad?
ventricular
what is mobits 1?
increasing PR and dropped p wave
what is mobits 2?
constant prolonged PR
usually 2:1/3:1
what is 1st degree AV block?
PR >300ms
what is 3rd degree heart block?
no relationship between QRS and P
postions of defib pads?
R mid clavicular and
L v6 position
what J is manual defib?
120-150J
what do you do in percutaneous pacing?
thump L sternal edge and see if QRS is een on ECG
what do you do in transcutaneous pacing?
Pads on
increase output while watching ECG
looking for pacing spike before QRS
Tx for SVT?
vagal manouvres
6mg adenosine (then 12 then 18mg)
bradyarrythmia and adverse features Tx?
500mcg atropine
repeated every 3-5mins
Tx for narrow QRS regular tachycardia?
vagal manouvres
adenosine 6mg
verapamil/Bblocker
Tx for broad QRS tachycardia?
VT (could be SVT with BBB)
amiodarone 300mg
what should the shock in cardioversion coincide with?
R wave
shock rate for AF and a fluter?
AF - highest
A flutter - 70 to 120