The nurse is caring for a child with suspected diabetes insipidus. Which clinical manifestation would be observable?

These are all positive signs of pregnancy, which are definitive and can only be explained by the presence of a fetus.A positive sign of pregnancy is fetal movement palpated by the nurse-midwife.

Choice E is wrong because a positive hCG test is a probable sign of pregnancy, not a positive one.A probable sign of pregnancy is strongly suggestive of pregnancy but could have other causes.A positive hCG test could be caused by medications, tumors, or other conditions that affect the level of hCG in the blood or urine.

Some other probable signs of pregnancy are uterine enlargement, Hegar’s sign (softening of the lower uterine segment), Goodell’s sign (softening of the cervix), Chadwick’s sign (bluish discoloration of the cervix), ballottement (rebound of the fetus when tapped by the examiner’s finger), Braxton Hicks contractions (painless, irregular uterine contractions), and positive pregnancy test.

Some other positive signs of pregnancy are identification of fetal heartbeat, visualization of the fetus by ultrasound or x-ray, and verification of fetal movement by an experienced clinician.

Diabetes insipidus is a disorder of the posterior pituitary gland that causes a deficiency of antidiuretic hormone (ADH). This leads to excessive urination (polyuria) and excessive thirst (polydipsia) as the body tries to balance the fluid loss. These symptoms may be so severe that the child does little other than drink and urinate.

Choice A is wrong because oliguria means decreased urine production and is not associated with diabetes insipidus.

Choice B is wrong because glycosuria means glucose in the urine and is associated with diabetes mellitus, not diabetes insipidus.

Choice C is wrong because nausea and vomiting are associated with inappropriate ADH secretion (SIADH), which causes fluid retention and hyponatremia, not diabetes insipidus.