Which lead is most likely to show an increased positive R amplitude in left ventricular hypertrophy?...
Which lead is most likely to show an increased positive R amplitude in left ventricular hypertrophy?
a) lead aVF
b) lead II
c) lead III
d) lead aVR
Homework Answers
Answer:
a) lead aVF
Explanation:
Voltage Criteria for Left Ventricular Hypertrophy
Limb Leads
- R wave in lead I + S wave in lead III > 25 mm
- R wave in aVL > 11 mm
- R wave in aVF > 20 mm
- S wave in aVR > 14 mm
Precordial Leads
- R wave in V4, V5 or V6 > 26 mm
- R wave in V5 or V6 plus S wave in V1 > 35 mm
Largest R wave plus largest S wave in precordial leads > 45 mm
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