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Serial sevens (or, more generally, the descending subtraction task; DST), where a patient counts down from one hundred by sevens, is a clinical test used to test cognition; for example, to help assess mental status after possible head injury, in suspected cases of dementia or to show sleep inertia.
The Series 7 is a three-hour, forty-five-minute exam. [1] It is held in one four-hour session. There are 125 questions on the test. Candidates have to score at least 72% to pass. The SIE Exam and the Series 7 Exam are co-requisite exams. [9] Average study time is between 80 and 150 hours depending on current financial knowledge. [10]
Renal angina is a clinical methodology to risk stratify patients for the development of persistent and severe acute kidney injury (AKI). [1] The composite of risk factors and early signs of injury for AKI, renal angina is used as a clinical adjunct to help optimize the use of novel AKI biomarker testing.
It was named for Edgar Van Nuys Allen, who described the original version of the test in 1942. [1] An altered test, first suggested by Irving S Wright in 1952, has almost universally replaced the original method in contemporary medical practice. The alternative method is often referred to as the modified Allen's test or modified Allen test. [2]
An urgent medical assessment is suggested to rule out serious medical conditions. [5] There is a relationship between severity of angina and degree of oxygen deprivation in the heart muscle. However, the severity of angina does not always match the degree of oxygen deprivation to the heart or the risk of a heart attack (myocardial infarction ...
BUN is an indication of kidney health. The normal range is 2.1–7.1 mmol/L or 6–20 mg/dL. [1]The main causes of an increase in BUN are: high-protein diet, decrease in glomerular filtration rate (GFR) (suggestive of kidney failure), decrease in blood volume (hypovolemia), congestive heart failure, gastrointestinal hemorrhage, [5] fever, rapid cell destruction from infections, athletic ...
An upper gastrointestinal series, also called a barium swallow, barium study, or barium meal, is a series of radiographs used to examine the gastrointestinal tract for abnormalities. A contrast medium , usually a radiocontrast agent such as barium sulfate mixed with water, is ingested or instilled into the gastrointestinal tract, and X-rays are ...
[4] [7] [15] Other factors thought to be associated with the development of variant angina include: intrinsic hypercontractility of coronary artery smooth muscle; existence of significant atherosclerotic coronary artery disease; and reduced activity of the parasympathetic nervous system (which normally functions to dilate blood vessels). [6] [7]
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