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A Darrow Yannet diagram is a schematic used in physiology to identify how the volumes of extracellular fluid and intracellular fluid alter in response to conditions such as adrenal insufficiency and SIADH.
Adrenal insufficiency can also result when a patient has a brain mass in the pituitary gland (e.g. pituitary adenoma, craniopharyngioma) which can take up space and interfere with the secretion of pituitary hormones such as ACTH, therefore leading to decreased adrenal stimulation (secondary adrenal insufficiency). [2]
An "adrenal crisis" or "Addisonian crisis" is a constellation of symptoms that indicates severe adrenal insufficiency. This may be the result of either previously undiagnosed Addison's disease, a disease process suddenly affecting adrenal function (such as adrenal hemorrhage ), or an intercurrent problem (e.g., infection, trauma) in someone ...
Waterhouse–Friderichsen syndrome (WFS) is defined as adrenal gland failure due to hemorrhages in the adrenal glands, commonly caused by sepsis. Typically, the bacteria responsible for triggering the bleeding is Neisseria meningitidis. [1] The bacterial infection leads to massive bleeding into one or both adrenal glands. [2]
Adrenal insufficiency is the clinical sign of insufficient glucocorticoid production or action, with or without concurrent insufficiency in mineralocorticoids and adrenal androgens. [21] Adrenocorticotropic hormone deficiency or exogenous glucocorticoid or opioid medication suppression of adrenocorticotropic hormone can cause adrenal ...
A low-dose ACTH stimulation test has been suggested as a sensitive test for secondary adrenal insufficiency diagnosis. [10] When compared to insulin tolerance testing [11] and the high-dose ACTH test, this test allows for a more accurate identification of patients with secondary adrenal insufficiency. [12]
The test is extremely sensitive (97% at 95% specificity) to primary adrenal insufficiency, but less so to secondary adrenal insufficiency (57–61% at 95% specificity); while secondary adrenal insufficiency may thus be dismissed by some interpreters on the basis of the test, additional testing may be called for if the probability of secondary ...
In the insufficiency of 21-hydroxylase to participate in the biosynthesis of cortisol, the 21-hydroxylation in the zona fasciculata of the adrenal cortex is impaired, so 17OHP and progesterone will not be properly converted into 11-deoxycortisol and 11-deoxycorticosterone, respectively − the precursors for cortisol and aldosterone.
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