Thanks for the comments that have encouraged me to expand on the previous post.
1. Often we obtain labs in response to the patient's history and physical examination. We should understand how different lab tests might help us, and what the indications are for ordering those tests.
2. Often when someone is "sick", they have multiple problems. In these more complex patients, often the more routine laboratory tests give us clues. Sometimes test results stimulate further history, e.g., any new meds? any travel? etc.
3. Our job requires us to understand and explain (at least to ourselves) each of the abnormal tests.
4. Sometimes we find unexpected lab tests. Being skilled at lab test interpretation allows us to add information to our diagnostic process.
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I think arterial blood gases would fall in to this category
ABGs are lab tests – we must know when to order them and how to interpret them
Dr. C: Honestly now, when was the last time you saw a cogent discussion of when to order arterial blood gases anywhere?
Good point – maybe I should write one!
I just came across The Blood Gas Handbook app on on iTunes app store may be of help with your ABG concerns.