A client who had an acute myocardial infarction (MI) is scheduled for percutaneous coronary intervention (PCI). The client asks the nurse about the purpose of this procedure. How should the nurse respond?

A) This choice is incorrect because while PCI can indirectly relieve chest pain by restoring blood flow to the heart, its primary purpose is not to reduce inflammation in the heart muscle.

B) This choice is correct. Percutaneous coronary intervention (PCI) involves the insertion of a catheter with a balloon at the tip into the blocked coronary artery. The balloon is inflated to compress the plaque and open the artery, and then a stent is placed to keep the artery open and improve blood flow to the heart.

C) This choice is incorrect because PCI's primary purpose is not to lower blood pressure but to restore blood flow to the heart by treating coronary artery blockages.

D) This choice is incorrect because the description provided is more characteristic of coronary artery bypass grafting (CABG) surgery, not PCI.

A: This choice is incorrect because nitroglycerin tablets should not be swallowed immediately; they are designed to dissolve under the tongue to provide rapid relief from chest pain.
B: This choice is incorrect as nitroglycerin tablets do not need to be taken with water; they should dissolve sublingually and taking them with water could dilute the medication, reducing its effectiveness.
C: This choice is incorrect because crushing the tablet and mixing it with food would delay and potentially reduce the absorption of the medication, which is critical during an episode of angina.
D: This is the correct instruction because nitroglycerin tablets are very sensitive to light and moisture, which can reduce their effectiveness. Keeping them in their original bottle ensures they are protected from environmental factors that could degrade the medication.