Construction crews work on the West Building at Edward Hospital on Friday, August 17, 2012. | Jeff Cagle~For Sun-Times Media

A construction worker guides a steel beam that is being hoisted by a crane on Friday, August 17, 2012, at Edward Hospital, which is undergoing additions to its West Building. | Jeff Cagle~For Sun-Times Media

A crane hoists a steel beam above the construction zone at Edward Hospital as it adds to its West Building on Friday, August 17, 2012. | Jeff Cagle~For Sun-Times Media

Imaging equipment is installed at the Edward Healthcare Center in Plainfield which is scheduled to open August 20. | Larry Ruehl~Sun-Times Media | Larry Ruehl~Sun-Times Media

According to the Edward Hospital Web site. In 1955, the hospital officially became Edward Hospital, which is now the largest employer in Naperville. |Sun-Times Media File photo

One way to improve the chances of surviving a heart attack is by calling 9-1-1. Ambulance personnel are able to start treatment as soon as they pick up a patient and can drive to the hospital more quickly than a non-emergency vehicle.

Physical Therapist Julie Loos works with Emily Kaczanko in the Rehabilitation Center at Edward Hospital in Naperville, IL on Thursday August 9, 2012. Emily was born weighing less than one pound (460 grams – 15 oz.) on January 11, 2012 in Edward Hospital’s Newborn Intensive Care Unit. | Matt Marton~Sun-Times Media

Dr. Rajeev Dixit greets Emily Kaczanko as her mother, Kelly Kaczanko looks on at Edward Hospital in Naperville, IL on Thursday August 9, 2012. Dr. Rajeev Dixit treated her when she was born weighing less than one pound (460 grams – 15 oz.) on January 11, 2012 in Edward Hospital’s Newborn Intensive Care Unit. | Matt Marton~Sun-Times Media