CP and atrial fibrillation: This is the first report showing that there is a stepwise increase in IAIR and several surrogate markers for ascending intrauterine infection [i.e., positive AF culture, inflammation in each placental compartment (i.e., choriodeciduitis, amnionitis, and funisitis) and EONS] according to the progression of inflammation in the full-detailed subdivisions of CP as an independent compartment for the assessment of acute inflammation.