After months of quiet planning for a new academic medical complex in New Orleans, the temperature is rising between Louisiana State University System officials and opponents of the school's proposed site. LSU leaders say they are reacting to what they say is misinformation and cheap shots by preservationists and other opponents of the proposed complex. Walter Gallas, the New Orleans field director for the National Trust for Historic Preservation, said LSU officials have earned the criticism, and he said the university is to blame for any rhetorical escalation.