Questions 34 and 35 A 70-year-old
woman had an ECG at her annual checkup. Use her lead II recording below to
answer Questions 34 and 35.
34. What is her heart rate in beats
A) 70 B) 78 C) 84 D) 94 E) 104
35. According to Einthovens law,
if the QRS voltage in lead III is 0.4 millivolt, what is the QRS voltage in
A) 0.05 millivolt B) 0.50
millivolt C) 1.05 millivolts D) 1.25 millivolts E) 2.05 millivolts
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