A month ago, officials at Vista Health Systems and Vista Medical Center East in Waukegan spoke publicly about the purchase of millions of dollars in new equipment and the strides they were making in regaining lost patients. But last week, Vista furloughed 69 non-medical personnel — 8.6% of its workforce — for the next six weeks. A hospital with a large number of uninsured and underinsured patients, Vista CEO Kevin M. Spiegel said financial stability is dependent on it becoming a safety-net facility and receiving emergency funding from the state.