The state Board of Examiners for Nursing today disciplined five nurses for misconduct, including four whose cases involved drugs or alcohol. After a hearing today, the board revoked the license of Danielle Dragon, a licensed practical nurse from Bristol, who was accused of crushing a pill that she said was Oxycodone but which was tested and found to be Tylenol. In April, the board had placed her license on probation for one year, and earlier this month, it had suspended her license while she awaited the hearing because, records show, she has failed to submit to drug tests. Dragon did not attend the hearing, so the board deemed that she had admitted to the charges against her. The board voted to suspend the license of Cherish Ostrosky, a registered nurse from Oxford, who was arrested during a traffic stop in Monroe May 19, record show.