A nurse is to administer a hypotonic solution to a patient with a critically high sodium. Which solution is hypotonic?

Choice A reason: This is not a correct finding for hypovolemia. Peripheral edema is the swelling of the extremities due to fluid accumulation in the interstitial spaces. It is a sign of fluid volume excess, not fluid volume deficit.

Choice B reason: This is not a correct finding for hypovolemia. Bradycardia is a slow heart rate, usually below 60 beats per minute. It is not a typical sign of fluid volume deficit, as the heart rate usually increases to compensate for the low blood pressure and low cardiac output.

Choice C reason: This is not a correct finding for hypovolemia. Hypertension is a high blood pressure, usually above 140/90 mmHg. It is not a typical sign of fluid volume deficit, as the blood pressure usually decreases due to the reduced blood volume and vascular resistance.

Choice D reason: This is a correct finding for hypovolemia. Decreased urine output is a sign of fluid volume deficit, as the kidneys try to conserve water and electrolytes by reducing the urine production. The normal urine output is about 30 mL per hour, and anything below 20 mL per hour is considered oliguria, which indicates impaired renal function.

Choice A reason: Oily stools are common, especially when excessive fat is consumed, because orlistat blocks the absorption of fat in the intestines. The undigested fat is then eliminated in the stool, making it oily, greasy, or foul-smelling.

Choice B reason: Many patients note having an increase of gas and flatus, because orlistat can also interfere with the digestion of carbohydrates and proteins, causing fermentation and gas production in the colon.

Choice C reason: Constipation is not a common side effect with this medication. In fact, orlistat may cause the opposite effect of diarrhea, as the unabsorbed fat can irritate the bowel and increase the motility.

Choice D reason: Some patients report the development of fecal incontinence, because orlistat can cause unpredictable bowel movements and difficulty in controlling the passage of stool, especially if the patient consumes a high-fat diet.

Choice E reason: This medication does have side effects, even though it can be bought over the counter. Orlistat is a prescription-strength drug that can cause serious adverse reactions, such as liver damage, kidney stones, gallbladder problems, and vitamin deficiencies. The over-the-counter version is a lower dose than the prescription one, but it still requires medical supervision and lifestyle changes.