Clinical ProceduresQuestion 35 of 100
When performing a 12-lead EKG, where is lead V1 placed?
a.Fifth intercostal space, left midclavicular line
b.Fourth intercostal space, right sternal border
c.Fourth intercostal space, left midaxillary line
d.Second intercostal space, left sternal border
Explanation
V1 is placed in the fourth intercostal space at the right sternal border, and V2 sits at the same level on the left sternal border. The fifth intercostal space at the left midclavicular line is V4, and V6 is at the midaxillary line. Misplacing chest leads distorts the tracing and can mimic or mask cardiac abnormalities.
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