When determining the electrical axis, which portion of the ECG tracing should you focus on?

A. T wave
B. P wave
C. PR interval
D. QRS complex

Answer: D

Health Professions

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The “Web of Causation”

a. Emphasizes the multi-causal nature of disease b. Became part of mainstream epidemiology in the 1960s c. Was first introduced by Ronald Fisher d. a and b e. All of the above

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