According to two Henry Ford Hospital companion studies.

In wanting to explain the issue of diagnosing pneumonia and high prevalence of misdiagnoses, Henry Ford experts examined medical records of 127 patients identified as having pneumonia between December 2008 and December 2009 and readmitted within thirty days of a prior hospitalization. Researchers discovered that 92 of the 127 patients were misdiagnosed with healthcare connected pneumonia using CDC/National Healthcare Security Network criteria. Health care associated pneumonia can be a newly recognized type of pneumonia in individuals who had latest close connection with a health care system, either through a medical center, outpatient dialysis center, nursing home or long-term care service. The classification was added with the shift from hospital-based care to home-based care.The latter, called HFPEF , affects older women and patients, and until now there has not been any treatment available against the disease. The result showed that patients with HFPEF who were treated with ACE-inhibitors or angiotensin receptor blockers – which are commonly used drugs to lower the blood pressure – experienced better survival than un-treated individuals. The difference persisted after adjustment for a lot of other elements, such as patient age, general health and other elements, and the final decrease in mortality was 10 percent.