In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).
A 76-year-old woman is admitted to the hospital because of abdominal discomfort, nausea, vomiting, and abdominal distention. She is diagnosed with a small-bowel obstruction. She stated that she had ...
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