Fluid deprivation test Fluid deprivation test A fluid or water deprivation test is a medical test which can be used to determine whether the patient has diabetes insipidus as opposed to other causes of polydipsia (a condition of excessive thirst that causes an excessive intake of water). The patient is required, for a prolonged period, to forgo intake of water completely, to determine the cause of the thirst. This test measures changes in body weight, urine output, and urine composition when fluids are withheld. Sometimes measuring blood levels of ADH (a synonym for vasopressin) during this test is also necessary. If there is
Shared decision-making in medicine instances where the term "shared decision-making" was employed was in a report on ethics in medicine by Robert Veatch in 1972. It was used again in 1982 in the "President's Commission for the Study of Ethical Problems in Medicine and Biomedical and Behavioral Research." This work built on the increasing interest in patient-centredness and an increasing emphasis on recognising patient autonomy in health care interactions since the 1970s. Some would even claim that a general paradigm shift occurred in the 1980s in which patients became more involved in medical decision-making than before. For example, a 2007 review of 115 patient