A client with atrial fibrillation receives a new prescription for dabigatran. Which instruction should the nurse include in this client's teaching plan?

Choice A reason: This is not the most important laboratory value for the nurse to review. Glucose is a measure of blood sugar levels, and it may be affected by various factors, such as diet, medication, stress, or infection. However, glucose is not directly related to the use of diclofenac or the symptoms of the client. The nurse should monitor the glucose levels for any changes, but it is not the priority.

Choice B reason: This is not the most important laboratory value for the nurse to review. Total protein is a measure of the amount of protein in the blood, and it may reflect the nutritional status, liver function, or kidney function of the client. However, total protein is not directly related to the use of diclofenac or the symptoms of the client. The nurse should monitor the total protein levels for any changes, but it is not the priority.

Choice C reason: This is not the most important laboratory value for the nurse to review. Sodium is a measure of the electrolyte balance in the blood, and it may be affected by fluid intake, fluid loss, or hormonal regulation. However, sodium is not directly related to the use of diclofenac or the symptoms of the client. The nurse should monitor the sodium levels for any changes, but it is not the priority.

Choice D reason: This is the most important laboratory value for the nurse to review. Hemoglobin is a measure of the oxygen-carrying capacity of the blood, and it may indicate the presence of anemia, which is a common adverse effect of diclofenac. Diclofenac can cause gastrointestinal bleeding, which can lead to a decrease in hemoglobin and hematocrit levels. The client's appearance and fatigue may be signs of anemia, which can impair the tissue oxygenation and worsen the client's condition. The nurse should review the hemoglobin levels and report any abnormal findings to the healthcare provider. The nurse should also assess the client for other signs of bleeding, such as melena, hematemesis, or hematuria.

Choice A reason: This is not the best assessment for the nurse to use to evaluate the client's therapeutic response to lactulose. Stool color and character may change as a result of lactulose administration, as it is a laxative that lowers the pH of the colon and promotes the excretion of ammonia. However, these changes are not indicative of the effectiveness of lactulose in reducing the ammonia levels in the blood, which is the main goal of the therapy.

Choice B reason: This is the best assessment for the nurse to use to evaluate the client's therapeutic response to lactulose. Serum electrolytes and ammonia are directly affected by lactulose administration, as it lowers the blood ammonia levels by converting it to ammonium and facilitating its elimination in the stool. The nurse should monitor the serum electrolytes and ammonia levels regularly to assess the efficacy and safety of lactulose therapy, as well as to adjust the dosage as needed.

Choice C reason: This is not the best assessment for the nurse to use to evaluate the client's therapeutic response to lactulose. Serum hepatic enzymes are markers of liver function and damage, and they may be elevated in clients with hepatic encephalopathy due to cirrhosis or other liver disorders. However, lactulose does not affect the hepatic enzymes directly, and it does not reverse the underlying liver disease. The nurse should monitor the serum hepatic enzymes to assess the progression and severity of the liver condition, but not to evaluate the response to lactulose.

Choice D reason: This is not the best assessment for the nurse to use to evaluate the client's therapeutic response to lactulose. Fingerstick glucose is a measure of blood glucose levels, and it may be altered in clients with hepatic encephalopathy due to impaired glucose metabolism by the liver. However, lactulose does not affect the blood glucose levels directly, and it does not improve the liver's ability to regulate glucose. The nurse should monitor the fingerstick glucose to assess the risk of hypoglycemia or hyperglycemia, but not to evaluate the response to lactulose.