A nurse is teaching a client who has diabetes mellitus about how to prevent hypoglycemia when taking insulin. Which of the following statements by the client indicates an understanding of the teaching?

A) This is correct as the INR level measures how long it takes for blood to clot and is used to monitor the effectiveness and safety of warfarin therapy. A high INR level indicates a higher risk of bleeding.

B) This is correct as some herbal supplements, such as garlic, ginger, ginkgo, and ginseng, can interact with warfarin and increase the risk of bleeding.

C) This is incorrect as vitamin K-rich foods, such as green leafy vegetables, can interfere with warfarin and decrease its effectiveness, leading to a lower risk of bleeding. However, clients taking warfarin should maintain a consistent intake of vitamin K-rich foods and avoid sudden changes in their diet.

D) This is correct as peptic ulcer disease is a condition that causes erosion and inflammation of the lining of the stomach or duodenum and can lead to bleeding complications, especially when taking warfarin.

E) This is incorrect as blood pressure does not directly affect the risk of bleeding from warfarin therapy. However, clients taking warfarin should monitor their blood pressure regularly and report any signs of hypertension or hypotension to their provider.

A) This is correct as eating a snack before exercising can help to prevent hypoglycemia by providing glucose for energy and preventing a sudden drop in blood sugar levels.

B) This is incorrect as skipping a meal can cause hypoglycemia by depriving the body of glucose and creating an imbalance between insulin and glucose levels. Clients taking insulin should eat regular meals and snacks and monitor their blood sugar levels frequently.

C) This is incorrect as increasing the insulin dose without consulting with the provider can cause hypoglycemia by lowering the blood sugar levels too much. Stress can affect blood sugar levels in different ways depending on the type and duration of stress and the individual's response. Clients taking insulin should consult with their provider about how to adjust their insulin dose according to their stress level and blood sugar readings.

D) This is incorrect as drinking alcohol can cause hypoglycemia by inhibiting the liver's production of glucose and increasing the risk of insulin overdose. Clients taking insulin should avoid or limit alcohol intake and never drink alcohol on an empty stomach.