P2463 Antibiotic Treatment for Invasive Listeriosis and Patient
P2463 Antibiotic treatment for invasive listeriosis and patient outcome: a retrospective cohort study Yaakov Dickstein*1, Yonatan Oster2, Orit Shimon3, Lior Nesher4, Dafna Yahav5,3, Yonit Wiener-Well6, Regev Cohen7,8, Ronen Ben-Ami9,3, Miriam Weinberger10,3, Galia Rahav11,3, Yasmin Maor12,3, Michal Chowers13,3, Ran Nir-Paz2, Mical Paul8,14 1 Rambam Healthcare Campus, Haifa, Israel, 2 Hadassah University Hospital - Ein Kerem, Jerusalem, Israel, 3 Tel Aviv University, Sackler Faculty of Medicine, Ramat Aviv, Israel, 4 Soroka Medical Center, Beersheba, Israel, 5 Rabin Medical Center, Petah Tikva, Israel, 6 Shaare Zedek, Jerusalem, Israel, 7 Laniado Hospital, Netanya, Israel, 8 Technion, The Ruth and Bruce Rappaport Faculty of Medicine, Haifa, Israel, 9 Tel Aviv Sourasky Medical Center , Tel Aviv, Israel, 10 Assaf Harofeh Medical Center, Be’er Ya’akov, Israel, 11 Sheba Medical Center, Ramat Gan, Israel, 12 Wolfson Medical Center, Holon, Israel, 13 Meir Medical Center, Kefar Sava, Israel, 14 Infectious Diseases Unit, Rambam Health Care Campus, Haifa, Israel Background: Current recommendations for treatment of invasive listeriosis suggest ampicillin-based therapy with the addition of an aminoglycoside. However, several reports have suggested higher morbidity and mortality with this regimen as compared with beta-lactam monotherapy. We aimed to evaluate the association between penicillin-aminoglycoside combination therapy and mortality in patients with invasive listeriosis while adjusting for timing of treatment onset. Materials/methods: This is a multicenter retrospective observational study of adult patients with invasive listeriosis (primary bacteremia, central nervous system [CNS] disease and pregnancy-associated listeriosis) in 11 hospitals in Israel between the years 2008-2014. We evaluated the effect of penicillin-based monotherapy compared with early combination therapy with gentamicin, defined as treatment started within 48 hours of culture results and continued for a minimum duration of 7 days.
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