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

This test measures the amount of chloride in the sweat, which is abnormally high in people with cystic fibrosis (CF). CF is an inherited disorder that affects the cells that produce mucus, sweat, and digestive juices.

Choice A is wrong because bronchoscopy is a procedure that allows the doctor to examine the airways and lungs, but it is not essential for diagnosing CF.

Choice B is wrong because serum calcium is a blood test that measures the level of calcium in the blood, which is not related to CF.

Choice C is wrong because urine creatinine is a test that measures the amount of creatinine in the urine, which reflects the kidney function, but it is not relevant to CF.

Normal ranges for sweat chloride test are:

• Less than 40 millimoles per liter (mmol/L) for children and adults
• Less than 30 mmol/L for infants younger than 6 months

A sweat chloride level of more than 60 mmol/L is considered positive for CF.

This is a normal respiratory change in pregnancy caused by elevated levels of estrogen. Estrogen increases blood flow and causes the nasal mucosa to swell, leading to congestion and nosebleeds. This condition is called pregnancy rhinitis and affects up to 20% of pregnant women.

Choice B is wrong because this is not an abnormal cardiovascular change, and the nosebleeds are not an ominous sign. They are usually harmless and do not affect the pregnancy outcome.

Choice C is wrong because there is no evidence that the woman is a victim of domestic violence.

This is a serious accusation that should not be made without proper assessment and screening.

Choice D is wrong because there is no indication that the woman has been using cocaine intranasally. Cocaine use can cause nasal damage and bleeding, but it can also have other signs and symptoms such as agitation, euphoria, dilated pupils, increased heart rate and blood pressure, and risk of miscarriage or preterm labor.