Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
6 parts to EKG reading
|
rate
rhythm intervals axis chamber abnormality QRST changes |
|
|
L axis deviation means ___
|
axis between -30 and -90
|
|
|
R axis deviation means ___
|
axis between 90 and 180
|
|
|
5 causes of L axis deviation
|
LVH
LBBB inferior MI WPW L ant fascicular block |
|
|
8 causes of R axis deviation
|
RBBB
RVH PE COPD septal defects lateral MI WPW L post fascicular block |
|
|
3 required RBBB criteria
1 optional criterion |
wide QRS
rsR' in R precordials wide S wave in I and V6 ST dep or TWI in R precordials |
|
|
4 required LBBB criteria
1 optional criterion |
wide QRS
broad R in L leads no Q in L leads except aVL ST change with reciprocal QRS PRWP, LAD, inferior lead Qs |
|
|
L leads
|
I
aVL V5 V6 |
|
|
4 criteria for L ant fascicular block
|
L axis deviation
qR in aVL narrow complex no other LAD cause present |
|
|
5 criteria for L post fascicular block
|
RAD
rS in I and aVL qR in III and aVF narrow complex no other RAD cause present |
|
|
to measure QT interval, measure from ___ to ___ in ___
|
beginning of QRS
end of QT longest QT interval |
|
|
Bazett formula for QTc
|
QTc = QT/sqrt(RR)
|
|
|
normal QTc for men
|
<450 ms
|
|
|
normal QTc for women
|
<460 ms
|
|
|
7 kinds of causes of QT prolongation
|
congenital
antiarrhythmics psych drugs electrolyte disturbances antibiotics autonomic dysfunction |
|
|
2 antiarrhythmic classes associated with QT prolongation
|
Ia
III |
|
|
4 kinds of psych drugs associated with QT prolongation
|
antipsychotics
Li SSRI TCA |
|
|
3 electrolyte disturbances associated with QT prolongation
|
hypocalcemia
hypomagnesemia hypokalemia |
|
|
2 antibiotic families associated with QT prolongation
|
macrolides
quinolones |
|
|
8 specific antibiotics associated with QT prolongation
|
voriconazole
pentamidine atovaquone chloroquine TMP-SMX amantadine foscarnet atazanavir |
|
|
4 kinds of autonomic dysfunction associated with QT prolongation
|
ICH
CVA s/p CEA s/p neck dissection |
|
|
4 intrinsic cardiac causes of QT prolongation
|
CAD
CMP bradycardia high-grade AVB |
|
|
2 miscellaneous causes of QT prolongation
|
hypothyroidism
hypothermia |
|
|
criteria for L atrial abnormality: either ___ or ___ (2)
|
P wave duration in II > 120 ms
P wave duration in V1 > 40 ms P wave amplitude in V1 > 1 mm |
|
|
2 criteria for R atrial abnormality: either ___ or ___
|
P wave amplitude > 2.5 mm in II
P wave amplitued > 1.5 in V1 |
|
|
5 causes of LVH
|
HTN
AS AR HOCM aortic coarctation |
