Examples Errors can include misdiagnosis or delayed diagnosis, administration of the wrong drug to the wrong patient or in the wrong way, giving multiple drugs that interact negatively, surgery on an incorrect site, failure to remove all surgical instruments, failure to take the correct blood type into account, or incorrect record-keeping.A 10th type of error is ones which are not watched for by researchers, such as RNs failing to program an IV pump to give a full dose of IV antibiotics or other medication.