What device was used for temporary pacing in the coronary intervention?

The choice of a 5 French temporary pacing wire is indeed the appropriate selection for temporary pacing during coronary interventions. Temporary pacing wires are designed to be inserted into the right atrium or ventricle to manage bradycardia or other arrhythmias that may occur during or after cardiac procedures. A 5 French gauge is typically sufficient to provide the necessary support for pacing while still being flexible and minimally invasive.

In contrast, the other devices listed serve different purposes in coronary interventions. A 6 French balloon catheter is generally used for balloon angioplasty, which dilates narrowed coronary arteries but does not provide pacing capabilities. The 4 French guiding catheter is primarily intended for guiding various devices into the coronary arteries, but it also does not offer pacing functionality. Finally, a 7 French stent delivery system is specifically designed for deploying stents within the coronary arteries to maintain vessel patency post-intervention, rather than aiding in pacing.

Overall, the temporary pacing wire is the specialized device that directly addresses the need for pacing during coronary interventions, making it the correct answer in this context.