Welch Allyn Means ECG Physicians Manual for CP Series Electrocardiographs - User Manual - Manual (Page 26)

MEANS Physicians Manual
Welch Allyn
26
2.18 ST and T abnormalities
Skip tests
if:
test LBBB passed
Say:
“consider pericarditis”
if: positive J amplitude > 120 µV in at least 3 of the extremity leads
and positive J amplitude > 120 µV in at least 6 of all leads
and heart rate  70 BPM
or positive J amplitude > 120 µV and positive T amplitude

50 µV in all leads
Say:
“high T voltage, consider hyperkalemia”
if: 330  corrected QT interval < 470 ms
and positive T amplitude > 1000 µV in V3, V4, V5
or positive T amplitude > 1000 µV in V4, V5, V6