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EKG overview
PA CLin Med
31
Health Care
Graduate
10/24/2009

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Cards

Term
normal heart rate:
Definition
60-100
Term
normal QRS duration:
Definition
Term
normal PR interval:
Definition
Term
normal QT interval:
Definition
Term
extended QRS interval is indicative of:
Definition
BBB >/= 0.12s
Term
a small square on the EKG represents:
Definition
0.04s
Term
extended PR interval indicates:
Definition
1st degree AV block
Term
RR' in V1/V2 & extended QRS:
Definition
RBBB
Term
normal axis:
Definition
0-90degrees
Term
RR' in V5/V6 & extended QRS:
Definition
LBBB
Term
when is a QRS isoelectric? what does that mean in terms of axis?
Definition
isoelectric when Rwave=Swave, vector is perpendicular to that lead
Term
which leads are normally isoelectric?
Definition
V3/V4
Term
biphasic Pwaves indicate:
Definition
atrial enlargement
Term
P wave = >2.5mm tall:
Definition
right atrial enlargement
Term
P wave >2.5mm wide:
Definition
left atrail enlargement
Term
R>S in V1, RAD, rightward rotation:
Definition
Right ventricular hypertrophy
Term
S in V1 + R in V5 > 35:
Definition
left ventricular hypertrophy
Term
strain pattern:
Definition
asymmetric ST depression and T wave inversion (V5/V6)
Term
Q wave:
Definition
infarct; 1 small square wide & >/= 1/3 amplitude of QRS
Term
ST elevation with Q waves:
Definition
acute MI
Term
ST depression:
Definition
subendocardial infarction
Term
symmetrical T wave inversion:
Definition
ischemia
Term
asymmetrical T wave inversion:
Definition
LVH
Term
increased K+:
Definition
peaked T waves
Term
decreased K+ :
Definition
U waves
Term
increased Ca++ :
Definition
short QT
Term
decreased Ca++:
Definition
prolonged QT
Term
Q waves and T wave inversions in Lead I, V2, V3, V4:
Definition
occlusion of left anterior descending artery (LAD)- anterior infarct
Term
Q waves and T wave inversions in leads I, aVL, V5, V6:
Definition
anterolateral infarct; occlusion of one of three arteries: 1. left circumflex artery
2. marginal branch of left circumflex artery
3. diagonal branch of LAD
Term
Q waves & Twave inversions in leads II, III, aVF
Definition
inferior infarct; right coronary artery
Term
unusually large R wave and upright T wave in V1:
Definition
posterior infarct;posterior descending artery or distal right coronary artery or distal left circumflex artery
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