IgM-enriched immunoglobulins (e-IgM) may be useful in patients with severe acute bacterial infections. The evidence for the administration of e-IgM is not extensive and a definitive consensus has never been reached on its best use in patients with acute infections as well as in critically ill patients. However, the official indication in several countries, including Italy, is quite wide and mainly refers to supportive treatment of patients with acute severe bacterial infections. A multidisciplinary meeting of Italian Experts in Infectious Diseases, Anesthesia and Critical Care, Pneumology, Microbiology and Oncohaematology aimed to produce a statement on the best practical methodological score that could improve the use of e-IgM in patients with different infections, variable severity of disease and etiology. The Expert Panel reviewed the literature and the available guidelines, discussed the experience and eventually proposed to adapt the PIRO score to the practical methodological needs of a simple tool that could guide the administration of e-IgM.
