Evolving microbial patterns of acute mastoiditis in pediatric patients undergoing mastoidectomy

Troy Wesson; Dhruv Sharma; Cole Rodman; Brady J Tucker; Daniel R Romano; Jerry Chen; Lindsay Mulinaro; Aaron E Carroll; Elisa A Illing; William Bennett; Sarah J Burgin

doi:10.1016/j.ijporl.2023.111690

Evolving microbial patterns of acute mastoiditis in pediatric patients undergoing mastoidectomy

Int J Pediatr Otorhinolaryngol. 2023 Sep:172:111690. doi: 10.1016/j.ijporl.2023.111690. Epub 2023 Aug 3.

Authors

Affiliations

¹ Indiana University School of Medicine, Indianapolis, IN, USA.
² Indiana University School of Medicine, Indianapolis, IN, USA; Indiana University Department of Otolaryngology-Head and Neck Surgery, Indianapolis, IN, USA.
³ Indiana University Department of Otolaryngology-Head and Neck Surgery, Indianapolis, IN, USA.
⁴ Indiana University School of Medicine, Indianapolis, IN, USA; Eskenazi Health Ear, Nose, and Throat and Audiology, Indianapolis, IN, USA.
⁵ Indiana University School of Medicine, Indianapolis, IN, USA; Indiana University Department of Pediatrics, Indianapolis, IN, USA.
⁶ Indiana University School of Medicine, Indianapolis, IN, USA; Indiana University Department of Otolaryngology-Head and Neck Surgery, Indianapolis, IN, USA; Eskenazi Health Ear, Nose, and Throat and Audiology, Indianapolis, IN, USA.
⁷ Indiana University School of Medicine, Indianapolis, IN, USA; Indiana University Department of Otolaryngology-Head and Neck Surgery, Indianapolis, IN, USA; Eskenazi Health Ear, Nose, and Throat and Audiology, Indianapolis, IN, USA. Electronic address: http://sburgin.iupui.edu.

PMID: 37544073
DOI: 10.1016/j.ijporl.2023.111690

Abstract

Objective: To investigate the microbial patterns and clinical outcomes of pediatric patients undergoing mastoidectomy for acute coalescent mastoiditis and to identify factors associated with poor outcomes and/or prolonged treatment.

Study design: Monocentric retrospective cohort study.

Setting: Tertiary referral pediatric hospital in Indiana.

Methods: By cross-referencing database data from the Pediatric Health Information System (PHIS) querying for all inpatient stays (patients younger than eighteen) with a diagnostic code of mastoiditis between January 1st, 2010 and August 31, 2019, and the electronic health record (Cerner) for Riley Hospital for Children, 46 patients with mastoidectomy were included. A two-tailed T-test was used to evaluate continuous parametric data. Statistical significance was determined as P < 0.05. For continuous variables, data was analyzed using continuous logistic regression. A criteria of p > 0.1 was used for inclusion in the multivariate regression.

Results: Inclusion criteria was met by 46 patients. From 2010 to 2019, S. pyogenes and S. pneumoniae were the most common bacteria, each isolated in 11 of 42 bacterial isolates (26.2%). There was no growth in 35.4% (17/48) of intra-operative wound cultures. On univariate analysis, patients with negative cultures had longer length of hospital stay (LOS) (7.7 days [6.5] vs. 4.3 [2.8]; p = 0.018) as well as higher rates of PICC (peripherally inserted central catheter) placement (53.3% vs. 19.4%; p = 0.021). There was a statistically significant difference in terms of gender (p = 0.021), with 15 males and 16 females in the positive culture cohort and 13 males and 2 females in the negative culture cohort. On multivariate analysis, which included gender, PICC placement, both intracranial and extracranial complications, duration of antibiotics, and LOS, female gender was the only significant predictor of positive culture status (p = 0.039).

Conclusion: S. pyogenes and S. pneumoniae were the predominant etiologic agents in acute coalescent mastoiditis between 2010 and 2019, and negative wound cultures were associated with worse clinical outcomes.

Keywords: Acute mastoiditis; Coalescent mastoiditis; Mastoidectomy; Microbiology.

MeSH terms

Acute Disease
Anti-Bacterial Agents / therapeutic use
Child
Female
Humans
Infant
Length of Stay
Male
Mastoidectomy
Mastoiditis* / complications
Mastoiditis* / epidemiology
Mastoiditis* / surgery
Retrospective Studies
Streptococcus pneumoniae

Substances

Anti-Bacterial Agents