I work the night shift at an acute rehab hospital, so my suggestions may or may not be useful to you. Here is what I have to offer:
1. Know the signs and symptoms of an impending CVA. Many of your patients who are admitted for s/p CVA are prone to have recurrent CVAs, especially in the inpatient setting. It might happen during your shift.
2. Know the behavioral differences between a right-side CVA patient and a left-side CVA patient (hint: one is going to be impulsive, overestimate their physical abilities, and therefore be a high fall risk).
3. Familiarize yourself with orthopedic issues (hip ORIFs, knee arthroplasties, knee arthroscopies, fractures, splints, casts, braces, CPM machines, therapeutic use of ice, pain management issues, etc.).
4. You might encounter plenty of debility cases after lengthy illness due to pneumonia, CA, COPD exacerbation, CHF exacerbation, acute coronary syndrome, and so forth.
5. Familiarize yourself with tramautic brain injury, spinal cord injuries, multiple trauma secondary to motor vehicle accidents, behavioral changes due to frontal lobe damage, quadriplegia, paraplegia, quadriparesis, paraparesis, etc.
6. Bowel and bladder issues are huge, such as in-and-out catheters, indwelling urinary catheters, rectal tubes, incontinence of bowel and bladder, ostomy appliances, bowel and bladder training, etc.
Keep in mind that I am only scratching the surface, and that you will see a whole lot more in rehab. Good luck to you!