A nurse is collecting data from a client who takes metformin for type 2 diabetes. Which of the following medications is contraindicated for this client due its effect on blood glucose levels?

A. Cimetidine:Cimetidine can indeed increase the effect of metformin due to competition for renal tubular clearance. This can lead to higher levels of metformin in the blood and potentially increase the risk of side effects. While it does not directly contraindicate metformin use, monitoring and dose adjustments might be necessary to manage this interaction.

B. Cephalexin:
Cephalexin is an antibiotic used to treat bacterial infections. It does not have a significant impact on blood glucose levels and is not contraindicated for a client taking metformin.

C. Prednisone:This is a corticosteroid that can increase blood glucose levels. Corticosteroids are known to cause hyperglycemia and may impair glucose control, which can be problematic for someone with diabetes taking metformin.

D. Levothyroxine:
Levothyroxine is a medication used to treat hypothyroidism. It does not have a direct impact on blood glucose levels and is not contraindicated for a client taking metformin.

A. Assist the client to low Fowler's position:
Placing the client in a semi-upright or low Fowler's position during and after the feeding helps prevent aspiration and facilitates digestion. This position reduces the risk of regurgitation and reflux.

B. Warm the feeding solution to body temperature:
Ensuring the feeding solution is at room temperature or slightly warmer can enhance the client's comfort and reduce the risk of cramping or discomfort caused by cold fluids.

C. Discard any residual gastric contents:
Before initiating a new feeding, it's essential to check and discard any residual gastric contents from the previous feeding to prevent contamination, ensure accurate measurement, and minimize the risk of bacterial growth.

D. Test the pH of gastric aspirate:
Checking the pH of gastric aspirate is an important step to confirm the proper placement of the NG tube in the stomach. Gastric pH is typically acidic (pH less than 5), indicating the correct placement of the tube in the stomach rather than the respiratory tract, where the pH is higher (more alkaline).