GE MAC 600 Operator's Manual page 155

12SL Statements
Statement
Minimal voltage criteria for LVH, may be normal variant
Moderate voltage criteria for LVH, may be normal variant
Nonspecific intraventricular conduction delay
Northwest axis
, plus right ventricular enlargement
Possible
Prominent mid-precordial voltage.
Pulmonary disease pattern
Right axis deviation
Right superior axis deviation
Rightward axis
RST' or QR pattern in V1 suggests right ventricular conduction delay
S1–S2–S3 pattern, consider pulmonary disease, RVH, or normal variant
ST elevation, consider early repolorization, pericarditis, or injury
ST elevation, probably due to early repolorization
with 2:1 AV conduction
with 3:1 AV conduction
with 4:1 AV conduction
with 5:1 AV conduction
with a competing junctional pacemaker
with rapid ventricular response
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