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Which of the following information should the nurse include when teaching a patient who has type 2 diabetes about glyburide?
- A. Glyburide decreases glucagon secretion from the pancreas.
- B. Glyburide stimulates insulin production and release from the pancreas.
- C. Glyburide should be taken even if the morning blood glucose level is low.
- D. Glyburide should not be used for 48 hours after receiving IV contrast media.
Correct Answer: B
Rationale: The sulphonylureas stimulate the production and release of insulin from the pancreas. If the glucose level is low, the patient should contact the health care provider before taking the glyburide because hypoglycemia can occur with this category of medication. Metformin should be held for 48 hours after administration of IV contrast media, but this is not necessary for glyburide. Glucagon secretion is not affected by glyburide.
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The nurse obtains the following information about a patient before administration of metformin. Which of the following findings indicate a need to contact the health care provider before giving the metformin?
- A. The patient's blood glucose level is 9.2 mmol/L.
- B. The patient's blood urea nitrogen (BUN) level is 21.4 mmol/L.
- C. The patient is scheduled for a chest x-ray in an hour.
- D. The patient has gained 1 kg since yesterday.
Correct Answer: B
Rationale: The BUN indicates impending renal failure and metformin should not be used in patients with renal or hepatic impairment. The other findings are not contraindications to the use of metformin.
The health care provider suspects the Somogyi effect in a patient whose 7:00 A.M. blood glucose is 12.2 mmol/L. Which action should the nurse plan to take?
- A. Check the patient's blood glucose at 3:00 A.M.
- B. Administer a larger dose of long-acting insulin
- C. Educate about the need to increase the rapid-acting insulin dose.
- D. Remind the patient about the need to avoid snacking at bedtime.
Correct Answer: A
Rationale: If the Somogyi effect is causing the patient's increased morning glucose level, the patient will experience hypoglycemia between 2 and 4 A.M. The dose of insulin will be reduced, rather than increased. A bedtime snack is used to prevent hypoglycemic episodes during the night.
Which of the following actions by a patient with type 1 diabetes indicates that the nurse should implement teaching about exercise and glucose control?
- A. The patient always carries hard candies when engaging in exercise.
- B. The patient goes for a vigorous walk when the glucose is 11.1 mmol/L.
- C. The patient has a peanut butter sandwich before going for a bicycle ride.
- D. The patient increases daily exercise when ketones are present in the urine.
Correct Answer: D
Rationale: When the patient is ketotic, exercise may result in an increase in blood glucose level. Type 1 diabetic patients should be taught to avoid exercise when ketosis is present. The other statements are correct.
Which of the following information about a patient who receives rosiglitazone is most important for the nurse to report immediately to the health care provider?
- A. The patient's blood pressure is 159/92.
- B. The patient has a history of emphysema.
- C. The patient's noon blood glucose is 4.7 mmol/L.
- D. The patient has chest pressure when ambulating.
Correct Answer: D
Rationale: Rosiglitazone can cause myocardial ischemia. The nurse should immediately notify the health care provider and expect orders to discontinue the medication. There is no urgent need to discuss the other data with the health care provider.
The nurse is admitting a patient with diabetic ketoacidosis. Which of the following prescriptions should the nurse implement first?
- A. Administer regular IV insulin 30 units.
- B. Infuse 1 L of normal saline per hour.
- C. Give sodium bicarbonate 50 mEq IV push.
- D. Start an infusion of regular insulin at 50 units/hour.
Correct Answer: B
Rationale: The most urgent patient problem is the hypovolemia associated with diabetic ketoacidosis (DKA), and the priority is to infuse IV fluids. The other actions can be accomplished after the infusion of normal saline is initiated.