The state Board of Examiners for Nursing has disciplined four nurses, including three in cases involving alcohol or drugs. The board on July 19 temporarily suspended the registered nurse license of Fernando Roldan of Hartford for failing to comply with the terms of a four-year probation, including attending therapy or support group sessions and submitting drug or alcohol test results, state Department of Public Health (DPH) records show. DPH records show that Roldan admitted that he abused alcohol between 2010 and 2014. The board’s April memorandum of decision said that Roldan was charged with driving under the influence of alcohol for the third time in 2013 and spent a year in prison. It also said he was fired from his job at Connecticut Valley Hospital’s Whiting Forensic Institute, where he had worked for 20 years, for using unreasonable force during a restraint of a patient.