I did meet with Ken regarding his clinical performance on his assigned unit on Monday.  I spent several hours with the students on 4 ortho (had made class aware several times in past that I would be making unannounced visits).  I did not arrive until late morning so around 12 noon I began asking students about their patients that they were caring for that day.  On discussion, Ken informed me that he had one assigned patient that day.  He described the patient as having a lung surgery and stated that his patient had "one chest tube".  He was unsure of knowledge of chest tubes but had not made his instructor aware of this uncertainty.  I did go in to visit his patient with him and noted 2 chest tubes with full pleurovac drainage systems readily visible.  He was unable to clearly explain why he did not report 2 chest tubes or other assessment data that I also noted while with patient.  I did tell Ken that this poor assessment was unacceptable.  This was more concerning since he has completed level 2 clinical, had been taught about chest tubes on the last level in respiratory, had successfully completed Nursing Process which stresses complete assessments at all times, and I was later told by Mrs Frascella that she had reviewed this exact patient and chest tube set-up with the student group when on 4 ortho the prior week.  We did discuss the situation at length and I stressed the seriousness of the situation.  He did take full responsibility for his poor performance.  His assigned clinical instructor was also aware of same, and Ken did state a much improved and comprehensive performance on Wednesday.  