Critically evaluate the role of the following investigations in the critically ill patient:
This question was quite arbitrarily placed into the gastroenterology section, on no grounds other than the interesting association of ammonia with various metabolic disturbances, versus the rather boring association of BNP with heart failure.
The question asks us to "critically evaluate", which means a certain systematic approach. I note that this approach was not used in the college answer.
The use of ammonia levels in critical care:
The use of BNP levels in critical care:
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