using PubMed describe what changes in the nursing homes making in the future in order to keep up with the ever changing needs of the demographics of seniors? Describe what are subacute units? Describe how subacute care emerge? Describe the strengths and limitations of the emergence of subacute care in long-term care as related to issues in levels of patients acuity (various levels of nursing care based on the needs of patients). ? Describe some example. Describe the impact impact of subacute care needs to be an integral component of hospitals, or should it be an integral part of the long term care system?