In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort study

Aim Combination treatment with clindamycin is recommended in patients with invasive group A Streptococcus infection; however, whether the same treatment is effective in invasive group B Streptococcus and S. dysgalactiae subspecies equisimilis infections remains unknown. We aimed to investigate wheth...

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Main Authors: Shoichiro Hamada, Mikio Nakajima, Richard H. Kaszynski, Ryosuke Kumazawa, Hiroki Matui, Kiyohide Fushimi, Hideaki Goto, Yoshihiro Yamaguchi, Hideo Yasunaga
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:Acute Medicine & Surgery
Subjects:
Online Access:https://doi.org/10.1002/ams2.634
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author Shoichiro Hamada
Mikio Nakajima
Richard H. Kaszynski
Ryosuke Kumazawa
Hiroki Matui
Kiyohide Fushimi
Hideaki Goto
Yoshihiro Yamaguchi
Hideo Yasunaga
author_facet Shoichiro Hamada
Mikio Nakajima
Richard H. Kaszynski
Ryosuke Kumazawa
Hiroki Matui
Kiyohide Fushimi
Hideaki Goto
Yoshihiro Yamaguchi
Hideo Yasunaga
author_sort Shoichiro Hamada
collection DOAJ
description Aim Combination treatment with clindamycin is recommended in patients with invasive group A Streptococcus infection; however, whether the same treatment is effective in invasive group B Streptococcus and S. dysgalactiae subspecies equisimilis infections remains unknown. We aimed to investigate whether clindamycin added to standard of care therapy would be effective in patients with invasive non‐group A β‐hemolytic Streptococcus infections. Methods This was a nationwide retrospective cohort study using the Japanese Diagnosis Procedure Combination inpatient database focusing on the period between 2010 and 2018. We extracted data on patients diagnosed with sepsis due to non‐group A β‐hemolytic Streptococcus. One‐to‐four propensity score‐matching was undertaken to compare patients who were treated with clindamycin within 2 days of admission (clindamycin group) and those who did not (control group). The primary outcome was in‐hospital mortality. Results We identified 3754 eligible patients during the study period. The patients were divided into the clindamycin (n = 296) and control groups (n = 3458). After one‐to‐four propensity score matching, we compared 289 and 1156 patients with and without clindamycin, respectively. In‐hospital mortality did not significantly differ between the two groups (9.7% versus 10.3%; risk difference 0.3%; 95% confidence interval, –3.5% to 4.2%). Conclusions This nationwide database study showed that combination therapy involving the use of clindamycin was not associated with lower in‐hospital mortality in patients with invasive non‐group A β‐hemolytic Streptococcus.
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spelling doaj.art-16cadee915444eb39c3bd3f225887c802022-12-21T18:46:48ZengWileyAcute Medicine & Surgery2052-88172021-01-0181n/an/a10.1002/ams2.634In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort studyShoichiro Hamada0Mikio Nakajima1Richard H. Kaszynski2Ryosuke Kumazawa3Hiroki Matui4Kiyohide Fushimi5Hideaki Goto6Yoshihiro Yamaguchi7Hideo Yasunaga8Emergency and Critical Care Center Tokyo Metropolitan Hiroo Hospital TokyoJapanEmergency and Critical Care Center Tokyo Metropolitan Hiroo Hospital TokyoJapanEmergency and Critical Care Center Tokyo Metropolitan Hiroo Hospital TokyoJapanDepartment of Clinical Epidemiology and Health Economics School of Public Health The University of Tokyo TokyoJapanDepartment of Clinical Epidemiology and Health Economics School of Public Health The University of Tokyo TokyoJapanDepartment of Health Policy and Informatics Tokyo Medical and Dental University Graduate School of Medicine Tokyo JapanEmergency and Critical Care Center Tokyo Metropolitan Hiroo Hospital TokyoJapanDepartment of Trauma and Critical Care medicine School of Medicine Kyorin University TokyoJapanDepartment of Clinical Epidemiology and Health Economics School of Public Health The University of Tokyo TokyoJapanAim Combination treatment with clindamycin is recommended in patients with invasive group A Streptococcus infection; however, whether the same treatment is effective in invasive group B Streptococcus and S. dysgalactiae subspecies equisimilis infections remains unknown. We aimed to investigate whether clindamycin added to standard of care therapy would be effective in patients with invasive non‐group A β‐hemolytic Streptococcus infections. Methods This was a nationwide retrospective cohort study using the Japanese Diagnosis Procedure Combination inpatient database focusing on the period between 2010 and 2018. We extracted data on patients diagnosed with sepsis due to non‐group A β‐hemolytic Streptococcus. One‐to‐four propensity score‐matching was undertaken to compare patients who were treated with clindamycin within 2 days of admission (clindamycin group) and those who did not (control group). The primary outcome was in‐hospital mortality. Results We identified 3754 eligible patients during the study period. The patients were divided into the clindamycin (n = 296) and control groups (n = 3458). After one‐to‐four propensity score matching, we compared 289 and 1156 patients with and without clindamycin, respectively. In‐hospital mortality did not significantly differ between the two groups (9.7% versus 10.3%; risk difference 0.3%; 95% confidence interval, –3.5% to 4.2%). Conclusions This nationwide database study showed that combination therapy involving the use of clindamycin was not associated with lower in‐hospital mortality in patients with invasive non‐group A β‐hemolytic Streptococcus.https://doi.org/10.1002/ams2.634β‐Hemolytic Streptococcusclindamycininvasive Streptococcus infectionStreptococcus agalactiaeStreptococcus dysgalactiae subspecies equisimilis
spellingShingle Shoichiro Hamada
Mikio Nakajima
Richard H. Kaszynski
Ryosuke Kumazawa
Hiroki Matui
Kiyohide Fushimi
Hideaki Goto
Yoshihiro Yamaguchi
Hideo Yasunaga
In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort study
Acute Medicine & Surgery
β‐Hemolytic Streptococcus
clindamycin
invasive Streptococcus infection
Streptococcus agalactiae
Streptococcus dysgalactiae subspecies equisimilis
title In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort study
title_full In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort study
title_fullStr In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort study
title_full_unstemmed In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort study
title_short In‐hospital mortality among patients with invasive non‐group A β‐hemolytic Streptococcus treated with clindamycin combination therapy: a nationwide cohort study
title_sort in hospital mortality among patients with invasive non group a β hemolytic streptococcus treated with clindamycin combination therapy a nationwide cohort study
topic β‐Hemolytic Streptococcus
clindamycin
invasive Streptococcus infection
Streptococcus agalactiae
Streptococcus dysgalactiae subspecies equisimilis
url https://doi.org/10.1002/ams2.634
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