“…The retrospective nature of the study prevents us from identifying the exact reasons for missed fundamental hospital care; however, reasons from other research include labor, material resources, and poor communication. 17,21 Furthermore, the ICD-9-CM codes may underestimate the actual number of NV-HAP cases because a point-prevalence observation was not conducted. Because we required CDC criteria, cases in immunocompromised patients may have been missed if cultures for pneumonia were not obtained, which is often the case.…”