St. Vincent's Hospital went from lifesaver to bankrupt to closed to construction site for luxury condominiums in what seemed the twinkle of an eye in lower Manhattan.Its end created a void. It was a place of births, last breaths, long and grueling nights, close calls and emergency care.Its closure is made no less traumatic by the memory of words spoken by St. John Paul II when he visited these shores in 1987. He told Catholic health care workers: "Your health care ministry ... is one of the most significant services which the Catholic Church offers to society in the name of Jesus Christ."But it is precisely because of that service Ronald Rak found himself walking the emptied halls of St. Vincent's four years ago.