Serial sevens, counting down from one hundred by sevens, is a clinical test used to test mental function; for example, to help assess mental status after possible head injury or in suspected cases of dementia. This well-known test, in active documented use since at least 1944, was adopted as part of the mini-mental state examination. The test is also used in determining when a patient is becoming unconscious under anaesthetic, for example prior to major dental surgery. Serial sevens forms the cognition portion of the mini-mental exam. Those who administer the mini-mental exam will often substitute serial fives or even serial threes for serial sevens. The smaller increments require the same kind of reverse mechanics.
![]() serial sevens testNeurology A test of subtracting 7 from 100, from 93, from 86, etc, to test consciousness, used when administering general anesthesia pre-surgery. See Mini-mental test.serial sevens test
A test of mental status. The patient is asked to subtract 7 from 100 and to take 7 from that value and continue serially.
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Serial sevens, counting down from one hundred by sevens, is a clinical test used to test mental function; for example, to help assess mental status after possible head injury or in suspected cases of dementia. This well-known test, in active documented use since at least 1944,[1] was adopted as part of the mini-mental state examination. The test is also used in determining when a patient is becoming unconscious under anaesthetic, for example prior to major dental surgery.
Serial 7's Mental Status Exam
On its own, the inability to perform 'serial sevens' is not diagnostic of any particular disorder or impairment, but is generally used as a quick and easy test of concentration and memory in any number of situations where clinicians suspect that these cognitive functions might be affected. Each subtraction is considered as a unit and calculations are made on the basis of the 14 possible correct subtractions, that is 93-86-79-72-65-58-51-44-37-30-23-16-9-2.[2]
Similar tests include serial threes where the counting downwards is done by threes, reciting the months of the year in reverse order, or spelling 'world' backwards.
Serial 7s Mental Status Test
A study involving uninjured high school athletes concluded that the serial sevens test is not appropriate when testing for concussion because it lacks specificity; the pass rate is too low to give any meaningful result. The ability to recite the months in reverse order was thought to be a more effective measure because the pass rate was higher for that test in uninjured athletes.[3] Teracopy pro download.
Free download swiftshader 3.0. The numbers of the serial sevens test are a recurring motif in Sarah Kane's play 4.48 Psychosis.
References[edit]
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