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Terms in this set (17)
Diagnosis of a Right Bundle Branch Block?
-QRS > 120 ms
-rsR' in V1
-Slurred S wave in I and V6
Diagnosis of a Left Bundle Branch Block?
-QRS > 120 ms
-Wide, deep S wave in V1
-Wide R waves in I and V6
A Q-wave in lead V1 in the presence of a RBBB is evidence of?
Diagnosis of a LAFB?
-qR in I and aVL
-rS in III
Diagnosis of a LPFB?
-rS in I and aVL
-qR in III
What are the non-specific/non-sensitive findings that may increase your suspicion for PE?
-Tall R-waves in precordial leads
What is a highly specific finding for PE?
TWI in INF and AS leads
What is a bifasicular block?
RBBB + LAFB or
RBBB + LPFB
What is a trifasciular block?
RBBB + LAFB or LPFB + 1st degree HB
Diagnosis of LVH?
-aVL >/= 11mm
-Deepest S wave in V1 or V2 + tallest R wave in V5 or V6 >= 35mm
Diagnosis of LV strain?
-V1-V3 = STE concave into ST segment
-V4-V6 = asymmetric TWI
What medications are avoided in WPW?
-Calcium channel blockers (verapamil, diltiazem)
What findings increase the likelihood of VT?
What is the first-line pharmacologic therapy for stable wide complex tachycardia?
Procainamide = it can terminate SVT and VT.
Warning = can cause sudden BP drop if given too rapidly
When you see a U wave, you should think of?
Digoxin is a cardiac glycoside, what is its effect on the heart?
-Increased inotropy = poisons Na/K pump = causes increased intracellular calcium
-Decreased chronotropy = decreases dromotropy between SA and AV node
What is the therapeutic concentration of Digoxin?
1 - 2ng/mL
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