Labels:text | screenshot | black | black and white | document OCR: Derform The water deprivation test is difficult to may correctly, unpleasant for the patient (wh 1 relies drink surreptitiously during the test), an the bladder heavily on the patient's ability to empty m ideal. completely. For these reasons, it is far fr n secretion Furthermore, the stimulus to vasopress is a combination of hypertonicity and d of the hypovolaemia, especially towards the er period of dehydration.