An older female client comes to the clinic for a regular check-up. The client tells the nurse that she has increased her daily doses of acetaminophen for the past month to control joint pain. Based on this patient's comment, which previous laboratory results should the nurse compare with today's laboratory report?

A. "I need to notify my healthcare provider if I lose my appetite or get nauseated." This statement shows understanding because loss of appetite and nausea can be symptoms of digoxin toxicity or side effects, and it is important to report these symptoms to a healthcare provider. Monitoring for such side effects is crucial when taking digoxin.
B. "I should take my furosemide only if I have shortness of breath or swelling in my feet." This statement is incorrect because furosemide, a diuretic, should be taken according to the prescribed schedule, not based on symptoms. It is used to manage fluid retention and symptoms of heart failure, and its use should not be dependent solely on the presence of symptoms.
C. "I need to check my blood pressure three times a day." While monitoring blood pressure is important, it is not specifically required for patients on digoxin and furosemide unless instructed by a healthcare provider. The focus should be more on monitoring for symptoms of drug side effects and electrolyte imbalances.
D. "If I lose more than one pound in a week, I should hold my next dose of furosemide." Weight loss can be a normal effect of furosemide due to fluid loss, and the decision to hold a dose should be based on specific medical advice and not solely on weight change.

A. Low-density lipoprotein (LDL): Atorvastatin's primary effect is to decrease LDL cholesterol levels. A decrease in LDL levels would indicate the medication is working as intended, not an increase.
B. Prothrombin time (PT): PT is a measure of blood clotting, which is not directly affected by atorvastatin. This value is more relevant for monitoring anticoagulant therapy.

C. Creatine phosphokinase (CK): CK levels can be used to monitor for muscle damage or side effects related to statin use. An increase in CK levels would suggest muscle damage, not the effectiveness of the statin.
D. High-density lipoprotein (HDL): Atorvastatin is a statin medication used to lower cholesterol levels, particularly low-density lipoprotein (LDL) cholesterol, which is a key target in reducing the risk of coronary artery disease (CAD). While the primary goal of atorvastatin is to lower LDL cholesterol, an increase in HDL cholesterol (often termed "good" cholesterol) is also desirable as it can help reduce the risk of CAD. Therefore, an increase in HDL is a positive indicator that the medication is having a beneficial effect.