A nurse is talking with a client who is about to start taking nitroglycerin oral, sustained-release capsules. Which of the following instructions should the nurse include?

A) "Heparin enhances the effects of the warfarin.": This statement is incorrect. Heparin and warfarin work through different mechanisms. Heparin acts quickly by inhibiting clot formation through antithrombin, while warfarin acts slower by inhibiting vitamin K-dependent clotting factors. They do not directly enhance each other's effects.

B) "Both heparin and warfarin work together to dissolve the clots.": This is inaccurate. Neither heparin nor warfarin dissolve existing clots; they prevent new clots from forming and existing clots from growing. The body's natural processes will eventually dissolve the clot.

C) "Heparin will be continued until the warfarin reaches a therapeutic level!": This is correct. Heparin is used initially because it acts quickly. Warfarin takes several days to reach therapeutic levels. Overlapping the two ensures continuous anticoagulation until warfarin is effective.

D) "I will ask the charge nurse to call your provider and get an explanation.": While involving the provider for further explanation can be helpful, it does not directly answer the client’s question. Providing accurate information about the overlapping use of heparin and warfarin is more appropriate in this context.

A) Neutropenia:
Neutropenia, a low level of neutrophils (a type of white blood cell), is not a typical adverse effect associated with atenolol. Atenolol primarily affects cardiovascular function rather than hematologic parameters like neutrophil count.

B) Anemia:
Anemia, a decrease in red blood cells or hemoglobin levels, is not commonly associated with atenolol use. Beta-blockers do not typically affect red blood cell production or hemoglobin levels.

C) Hypokalemia:
Hypokalemia, or low potassium levels, can occur with some medications, but it is not a well-documented adverse effect of atenolol specifically. Atenolol may affect potassium levels indirectly through its effects on the cardiovascular system, but it is not a primary adverse effect.

D) Bradycardia:
Atenolol is a beta-blocker medication that primarily works by slowing the heart rate and reducing the force of heart contractions. Bradycardia, or a slow heart rate, is a known adverse effect of beta-blockers like atenolol. It occurs due to the medication's mechanism of action in blocking beta-adrenergic receptors, which can lead to decreased heart rate.