Ischemic ATN occurs when the tubular cells do not get enough oxygen, a condition that they are highly sensitive and susceptible to, due to their very high metabolism. Diagnosis. Acute tubular necrosis is classified as a renal (i.e. not pre-renal or post-renal) cause of acute kidney injury. Diagnosis is made by a FENa (fractional excretion of sodium) > 3% and presence of muddy casts (a type of granular cast) in urinalysis.
A Rhyming Couplet is two line of the same length that rhyme and complete one thought. There is no limit to the length of the lines. Rhyming words are words that sound the same when spoken, they don't necessarily have to be spelt the same.
Types of Couplets. 1  Elegiac Couplet: This example of couplet was used primarily in ancient Greek poetry for themes on a smaller scale than the epic. 2  Heroic Couplet: A heroic couplet is fairly similar to the elegiac couplet in that it is generally closed and self-contained, and thus has meaning on its own.