Diabetes Flashcards
- An type 1 (insulin-dependent) diabetic reports recurrent hypoglycemia late in the morning. After collecting his health history what finding would the nurse suspect is causing the late morning hypoglycemia?
A) The patient likes to nap after work before his evening meal.
B) The patient jogs 2 miles in the morning before he goes to work.
C) The patient likes to have an early lunch with his girlfriend.
D) The patient eats oatmeal early in the morning for breakfast.
B
Feedback:
Physical exercise, such as jogging, changes insulin requirements and may result in a delayed hypoglycemic reaction. The fact that he likes to nap before dinner and has an early lunch is unrelated to his hypoglycemia. The patient eating oatmeal early in the morning would help stabilize his blood sugars until later in the morning, but the jogging would have a dramatic effect.
The nurse suspects the diabetic patient may be having a hypoglycemic reaction when what manifestation is assessed?
A) Dry, flaky skin
B) Diaphoresis
C) Flushing of the face
D) Fruity breath
B
Diaphoresis and cool clammy skin are signs of hypoglycemia. A fruity breath is seen with ketoacidosis. Flushing of the face is associated with hyperglycemia.
What type of insulin would the nurse administer if the fastest therapeutic effects are needed?
A) Lispro (Humalog)
B) Aspart (NovoLog)
C) Regular (Humulin R)
a lispro
Glulisine has an onset of 2 to 5 minutes and peaks in 30 to 90 minutes so it has the fastest onset of action. Lispro has an onset in <15 minutes and also peaks at 30 to 90 minutes. Aspart takes 10 to 20 minutes for onset and peeks in 1 to 3 hours. Regular insulin has a 30 to 60 minute onset and peaks in 2 to 4 hours.
- The patient, newly diagnosed with diabetic retinopathy, asks what caused this disorder. What is the nurse’s best response?
A) Inability of cells in the eye to reproduce
B) Increase of aqueous humor in the eye
C) Decrease of nerve innervations throughout the eye
D) Oxygen cannot diffuse rapidly across the membrane to tissues in the eye
D
he body’s inability to effectively cope with carbohydrate, fat, and protein metabolism over a long period of time results in a thickening of the basement membrane in large and small blood vessels. This thickening leads to changes in oxygenation of the lining of the vessels causing damage and narrowing of the vessels. The decreased blood flow through the vessels results in the inability of oxygen to rapidly diffuse across the membrane to the tissues of the eye. The tiny vessels of the eye are narrowed and closed, which causes loss of vision. Increase of aqueous humor is seen in glaucoma.
- A diabetic patient is taking regular and NPH insulin to manage his diabetes. What is the best evaluation tool to measure the overall patient response to the insulin therapy?
A.Blood pressure
B.Bilirubin level
C.Glycosylated hemoglobin (HbAlc) levels
D. Fasting blood glucose levels
C
HbAlc levels provide a 3-month average of glucose levels, which provides the best evaluation tool to measure the overall patient response to the treatment plan.
- A patient is brought to the emergency department with severe hypoglycemia. What drug would the nurse prepare to administer intravenously?
A) Diazole (Hyperstat)
B) Glyburide (DiaBeta)
C) Glucagon (GlucaGen)
D) Insulin (Humulin R)
C
This patient will need a glucose-elevating agent. Glucagon (GlucaGen) is given parenterally only and is the preferred agent for emergency situations. Diazole is also a glucose-elevating agent but is only administered so it would take longer to take effect. Insulin would be administered for hyperglycemia. Glyburide is an oral antidiabetic agent, which is a second-generation sulfonylurea, and is administered for hyperglycemia.
The nurse will question what medication order for a diabetic patient who takes insulin to control his blood sugar level?
A) Propranolol (Inderal) 10 mg orally t.i.d.
B) Furosemide (Lasix) 60 mg/d orally
C) Cefaclor (Ceclor) 250 mg orally every 8 hour
D) Metoclopramide (Reglan) 20 mg PO
A
Propranolol is a beta-blocker and should be avoided in combination with insulin. The blocking of the sympathetic nervous system also blocks many of the signs and symptoms of hypoglycemia, hindering the patient’s ability to recognize problems. If propranolol must be taken, the nurse will need to teach this patient other ways to recognize hypoglycemia. Furosemide, cefaclor, and metoclopramide do not cause drugdrug interactions with insulin.
- A patient comes to the diabetes educator and asks about changing his insulin. The patient explains that his occupation takes him on long international flights and he does not want to administer insulin on the plane. What kind of insulin would the diabetic nurse educator seek an order for?
A) Lispro (Humalog)
B) Glulisine (Apidra)
C) Glargine (Lantus)
D) Aspart (NovoLog)
C
Ultralente has a duration of 20 to 24 hrs hours and a peak time of 10 to 30 hours. This would prevent him having to administer insulin on the airplane. Lispro has a duration of 2 to 5 hours and a peak time of 30 to 90 minutes. Glulisine has a duration of 1 to 2.5 hours and a peak time of 30 to 90 minutes. Aspart has a duration of 3 to 5 hours and a peak time of 1 to 3 hours. The last three insulin types mentioned in this Rationale would likely require administration on long plane flights.
- The diabetes nurse educator describes type 1 diabetes with what statement?
A. Blood glucose level can be controlled with diet.
B. Exogenous insulin is required for life.
C. Oral agents can help to control blood glucose levels.
D. It is always diagnosed in early childhood.
B
Type 1 diabetes results from an autoimmune disorder that destroys pancreatic beta cells. Insulin is the only effective treatment for type 1 diabetes because pancreatic beta cells are unable to secrete endogenous insulin and metabolism is severely impaired. In type 1 diabetes, blood glucose levels cannot be controlled with diet, oral agents cannot control the disease process because they stimulate insulin production, and the patient with type 1 diabetes does not produce insulin. It can be diagnosed at other stages of the life span than just in early childhood.
- A patient is admitted to the emergency department in diabetic ketoacidosis (DKA) with a blood glucose level of 485 mg/dL. The physician orders an initial dose of 25 U insulin IV. Which type of insulin will be administered?
A) NPH insulin
B) Humulin L insulin
C) Humulin N insulin
D) Regular insulin
D
Regular insulin is a short-acting insulin that manages the hyperglycemia and hyperkalemia resulting from DKA, which is a life-threatening complication that occurs with severe insulin deficiency. Furthermore, only regular insulin can be given IV and is the drug of choice in emergency situations. Humulin N, Humulin L, and NPH are intermediate-acting forms.
- What instructions would be important to give to a 50-year-old patient with type 2 diabetes who has been switched from glyburide (DiaBeta) to repaglinide?
A) It is less potent, so you will need to take a larger dose.
B) It stimulates insulin production, so you need to eat soon after taking the medication.
C) It is more potent and longer lasting, so you should take it every other day.
D) The two medications are virtually the same.
B
Glyburide is a second-generation sulfonylurea that stimulates insulin release from the beta cells in the pancreas with a 2- to 4-hour onset of action. Repaglinide has an onset of action within 30 minutes with peak effect in 1 hour, and duration of action is approximately 3 to 4 hours. Because repaglinide has a much faster onset of action, it is important the patient eats within15 to 30 minutes after taking the drug to avoid hypoglycemia. Repaglinide is not less potent, it is not more potent, and the two medications
- The nurse is instructing a patient how to mix NPH insulin with regular insulin in one syringe. The nurse tells the patient the mixture must be administered within how long after it is prepared?
A) 5 minutes
B) 10 minutes
C) 15 minutes
D) 20 minutes
C
Use caution when mixing types of insulin. Administer mixtures of regular and NPH or regular and lente insulins within 15 minutes after combining them to ensure appropriate suspension and therapeutic effect.
With what patient would the nurse question the administration of human insulin?
A) Gestational diabetes
B) Type 2 diabetes controlled on oral antidiabetic agents with systemic infection
C) Type 1 diabetes of many years
D) Type 2 diabetes controlled by diet
D) Type 2 diabetes controlled by die
Insulin is recommended for treatment of type 2 diabetes in patients whose diabetes cannot be controlled
by diet or other pharmacotherapeutic agents. If the diabetes can be controlled by diet, the pancreas is
still functioning and releasing insulin. Human insulin can be used in gestational diabetes, patients with
type 2 diabetes controlled on oral antidiabetic agents with systemic infection, or patients with type 1
diabetes of many years standing.
The nurse is teaching the patient about the newly prescribed external insulin pump. What are priority teaching points for the nurse to include? (Select all that apply.)
A) Watch for signs and symptoms of infection.
B) Check blood glucose frequently.
C) Change tubing frequently.
D) Have pump calibrated weekly.
E) Added insulin requires separate injection site
abcd
This pump device can be worn on a belt or hidden in a pocket and is attached to a small tube inserted
into the subcutaneous tissue of the abdomen. The device slowly leaks a base rate of insulin into the
abdomen all day; the patient can pump or inject booster doses throughout the day to correspond with
meals and activity. The device does have several disadvantages. For example, it is awkward, the tubing
poses an increased risk of infection and requires frequent changing, and the patient has to frequently
check blood glucose levels throughout the day to monitor response. There is no need to calibrate the
pump
The nurse, working in the emergency department, receives a patient following a motor vehicle accident
whose medical history is unknown with a blood glucose level of 325 mg/dL. What rationale does the
nurse provide explaining this elevated blood glucose level?
A) The patient’s accident was caused by diabetic ketoacidosis (DKA).
B) The patient has not been taking the antidiabetic agent as prescribed.
C) The patient most likely just finished a meal.
D) The stress reaction caused an increase in blood sugar
D) The stress reaction caused an increase in blood sugar
The stress reaction elevates the blood glucose concentration above the normal range. In severe stress
situations, the blood glucose level can be very high (300 to 400 mg/dL). T
The nurse is caring for a patient with renal dysfunction who requires an oral antidiabetic agent. What
drug will the nurse expect to see ordered?
A) Tolbutamide (glipizide)
B) Chlorpropamide
C) Tolazamide
D) Chlorpromazine
A) Tolbutamide (glipizide)
A patient with type 1 diabetes takes 12 units of regular insulin and 34 units of NPH insulin in the
morning. How would the nurse explain why two different types of insulin are required to control the
patient’s blood sugar?
A) Different onsets and peak effects extends blood glucose control.
B) The mixture makes each drug work more effectively.
C) The combination reduces the adverse effects experienced.
D) Patients are less likely to experience hypoglycemia
A) Different onsets and peak effects extends blood glucose control.
Regular insulin will begin working within 30 to 60 minutes and peak within 2 to 4 hours and a 6- to 12-
hour duration of action whereas NPH insulin has an onset of 60 to 90 minutes and peaks in 4 to 12
hours, with a 24-hour duration of action. By giving both drugs at once, the patient gets rapid blood
glucose control within 30 minutes from the regular insulin and the control lasts 24 hours due to NPH’s
long duration of action. T