Oral antidiabetic medications - Alpha-glucosidase inhibitors: Nursing pharmacology

Alpha-glucosidase inhibitors are medications primarily used to treat type 2 diabetes mellitus, and have an unlabeled use for type 1 diabetes mellitus as an adjunct to insulin.

Now, type 2 diabetes mellitus is characterized by insulin resistance, which is when tissue cells have trouble responding to insulin to use glucose from the blood, while in type 1 diabetes mellitus, there’s no insulin at all.

As a result, tissue cells starve for energy despite having high blood glucose levels, which is called hyperglycemia.Now, alpha-glucosidase inhibitors include medications like acarbose and miglitol, which can be taken orally.

Once administered, these medications act in the small intestine, where they inhibit the enzyme alpha-glucosidase, which helps digest complex carbohydrates into simple carbohydrates, such as glucose, that can be absorbed through the lining of the intestine and into the blood.

As a result, alpha-glucosidase inhibitors delay the absorption of ingested carbohydrates, ultimately leading to a smaller rise in blood glucose.Unfortunately, the undigested carbohydrates remain within the intestines and are digested by intestinal bacteria.

Because of that, clients taking alpha-glucosidase can often present with gastrointestinal side effects, such as abdominal pain, flatulence, and diarrhea.

In addition, acarbose may lead to hepatic injury, while clients on miglitol may develop a skin rash.As far as contraindications go, alpha-glucosidase inhibitors should not be given to clients with gastrointestinal conditions like inflammatory bowel disease, or IBD for short, as well as ileus, colonic ulceration, or intestinal obstruction.

Alpha-glucosidase inhibitors are also contraindicated in clients experiencing diabetic ketoacidosis, or DKA for short. In addition, these medications inhibitors should be avoided during pregnancy, unless strictly necessary, and are contraindicated while breastfeeding.

Finally, alpha-glucosidase inhibitors should be used with caution in children, as well as clients with renal or hepatic disease.Now, if your client is prescribed an alpha-glucosidase inhibitor like acarbose, start by reviewing their most recent laboratory test results, such as blood glucose, hemoglobin A1c, as well as renal and hepatic function tests.

Next, explain how the medication works in their gastrointestinal system to slow the rise in their blood glucose level after a meal.

Be sure to remind them that the medication is most effective when combined with an antidiabetic regimen, which includes following a low-carbohydrate and high-fiber diet, regular physical activity, and frequent blood glucose monitoring.Next, teach your client to take alpha-glucosidase inhibitors at the first bite of their three main meals.

Let them know that gastrointestinal side effects such as abdominal pain, flatulence, and diarrhea are common; they usually decrease with time, but encourage your client to notify their healthcare provider if these symptoms persist or worsen.

Review with your client the symptoms of hyperglycemia, such as fatigue, blurred vision, increased thirst, appetite, and urination; if they experience any of these, advise them to check their blood glucose level and contact their healthcare provider immediately.

Also teach your client to recognize signs of liver damage, such as fatigue, anorexia, nausea, dark urine, or jaundice. Lastly, if your client is taking acarbose along with another oral antidiabetic medication, the risk for hypoglycemia is increased, so teach them to recognize signs of hypoglycemia, such as hunger, headache, fatigue, tremors, dizziness, and confusion.

If these symptoms occur, instruct your client to check their glucose; remind them that because their medication prevents the breakdown of sucrose, they will need to take oral glucose tablets to raise their glucose level to normal levels.

Finally, during treatment with an alpha-glucosidase inhibitor, be sure to monitor for side effects and the therapeutic response of the medication by regularly checking your client’s blood glucose levels, hemoglobin A1c, and liver function tests.Alright, as a quick recap … Alpha-glucosidase inhibitors are medications used to treat type 2 diabetes mellitus.

They work by inhibiting the enzyme alpha-glucosidase, which helps break down complex carbohydrates into simple ones, thereby delaying the absorption of ingested carbohydrates, and resulting in a smaller rise in blood glucose after a meal.

The undigested carbohydrates remain in the gastrointestinal tract, where they are digested by intestinal bacteria, often causing side effects like abdominal pain, flatulence, and diarrhea.

Nursing considerations for clients taking alpha-glucosidase inhibitors include performing a baseline assessment, as well as monitoring for side effects and for the therapeutic effect of improved glucose control.

Client teaching is focused on safe self-administration, as well as recognizing side effects and managing them when