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.
Definition of Couplet. A couplet is a successive pair of lines in a poem. The pair of lines that comprise a couplet generally rhyme with each other and contain the same meter. Couplets are either closed, which is to say that both lines are end-stopped, or open, which is to say that there is enjambment involved and the meaning of the line runs on past the end of the line.