FAIRFIELD - The Fairfield Cardiac Catheterization Labs, a joint venture between Mercy Health Partners and several physicians, held its grand opening Monday at Mercy Hospital Fairfield.

The 11-month project resulted in seven patient rooms and two new labs for gathering high-tech images used to diagnose and treat heart disease. The equipment includes all-digital X-ray imaging technology.

The catheterization center is part of a 17,000-square-foot, two-story addition to the hospital adjacent to the main entrance.

More expansion is planned.

In November, Mercy Hospital Fairfield launched a two-year, $54.6 million project that will add more than 100,000 square feet for expanded emergency, surgical and diagnostic services; a "heart hospital" within the hospital; a new lobby, chapel, gift shop and cafeteria; and more office space for physicians.