Pyelonephritis – inflamed kidneys – can lead to pregnant women becoming ill and having to be admitted to hospital. In this study Amy M. Valent, from Oregon Health and Science University, led a team of researchers analysing 123 cases of pyelonephritis. 25 of them required hospitalization. The women who had to be hospitalized were in worse health overall, needed diagnostic imaging, and had had delayed administration of intravenous antibiotics. Screening instruments called APACHE II and MOEWS had a modest ability to work out whether mothers with pyelonephritis would fall ill or not.
You can read the abstract of this article here.