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.
Heroic Couplet - Definition of Literary Term Heroic couplet is a pair of rhymed lines with iambic pentameter. This form of poetry was popularized and highly developed by the neo-classical poets, especially Alexander Pope. Chaucer was the first literary figure to compose verse using heroic couplets, but the use of Heroic couplets did not become widespread until the seventeenth century.