12 Leads Flashcards
What leads are lateral?
I, avL, V5, V6
What leads are inferior?
II, III, avF
What leads are septal?
V1, V2
What leads are anterior?
V3 - V4
What leads are posterior?
V1-V4 ST depression reciprocal leads
What arteries are associated with inferior wall?
RCA, PDA, PLB
What arteries are associated with septal wall?
Septals only (rare solo)
What arteries are associated with anterior wall?
LAD
What arteries are associated with lateral wall?
Diagonals or obtuse marginals (rare solo)
What arteries are associated with posterior wall?
Circumflex
What arteries are associated with antero-septal?
LAD/Septals
What arteries are associated with antero-lateral?
LAD/Diagonals
What arteries are associated with infero-lateral?
RCA, PDA, PLB
What arteries are associated with postero-lateral?
Circumflex/obtuse marginals
What lead is used to identify a bundle branch block?
V1
What leads can left atrial enlargement be seen in?
I, II, III, avL, V4-V6
What is different about the p-wave in left atrial enlargement?
P-wave is broad (>.12sec) or notched
What leads can right atrial enlargement be seen in?
II, III, avF
What is different about the p-wave in right atrial enlargement?
Tall, peaked p-waves (>2.5mm)
What EKG changes can be seen in someone with hypernatremia?
None
What EKG changes can be seen in someone with hyponatremia?
None
What EKG changes can be seen in someone with hyperkalemia?
Tall, narrow and peaked T-waves
VT/VF/asystole
What EKG changes can be seen in someone with hypokalemia?
Sinus bradycardia, AV blocks, flattened T-waves
What EKG changes can be seen in someone with hypercalcemia?
Short QT interval, short ST segment
What EKG changes can be seen in someone with hypocalcemia?
Long QT interval, long ST segment
What EKG changes can be seen in someone with hypermagnesemia?
None
What EKG changes can be seen in someone with hypomagnesemia?
Potential for Torsades dā Pointes
