posterior pituitary gland
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secretes the hormone vasopressin (ADH--antidiuretic hormone); ADH
increases permeability of the renal distal tubules, causing the kidneys to
reabsorb water
Urine Specific Gravity
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1.010-1.025
, urine osmolality
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is used to measure the number of dissolved particles per unit of water in
the urine; 50-1200mOsm/kg h2o for a random sample, depending on fluid
intake; greater than 850mOsm/kg h2o if fluid is restricted prior to testing
ADH reference range
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1-5pg/mL (1-5ng/L)
prior to testing, client should fast and avoid stress for 12hrs; some meds--
acetaminophen, antidepressants, diuretics, opioids, phenytoin) can interfere
with test result; collect blood sample & transport to lab within 10min
increased ADH: SIADH, nephrogenic DI
decreased ADH: neurogenic DI
Central (neurogenic) DI
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body does not produce ADH; causes: head injury, tumor, irradiation of
pituitary gland, serious infection; clients have a rise in osmolality of more
than 9% following admin of vasopressin
Give this one a try later!
secretes the hormone vasopressin (ADH--antidiuretic hormone); ADH
increases permeability of the renal distal tubules, causing the kidneys to
reabsorb water
Urine Specific Gravity
Give this one a try later!
1.010-1.025
, urine osmolality
Give this one a try later!
is used to measure the number of dissolved particles per unit of water in
the urine; 50-1200mOsm/kg h2o for a random sample, depending on fluid
intake; greater than 850mOsm/kg h2o if fluid is restricted prior to testing
ADH reference range
Give this one a try later!
1-5pg/mL (1-5ng/L)
prior to testing, client should fast and avoid stress for 12hrs; some meds--
acetaminophen, antidepressants, diuretics, opioids, phenytoin) can interfere
with test result; collect blood sample & transport to lab within 10min
increased ADH: SIADH, nephrogenic DI
decreased ADH: neurogenic DI
Central (neurogenic) DI
Give this one a try later!
body does not produce ADH; causes: head injury, tumor, irradiation of
pituitary gland, serious infection; clients have a rise in osmolality of more
than 9% following admin of vasopressin
