Abstract
Purpose
We aimed to evaluate the effectiveness of different antibiotic regimens for the treatment of parapharyngeal abscess (PPA) and characterize patients, who suffered potentially preventable complications (defined as death, abscess recurrence, spread of infection, or altered antibiotic treatment because of insufficient progress).
Methods
Sixty adult patients with surgically verified PPA were prospectively enrolled at five Danish Ear–nose–throat departments.
Results
Surgical treatment included internal incision (100%), external incision (13%), and tonsillectomy (88%). Patients were treated with penicillin G ± metronidazole (n = 39), cefuroxime ± metronidazole (n = 16), or other antibiotics (n = 5). Compared to penicillin-treated patients, cefuroxime-treated patients were hospitalized for longer (4.5 vs 3.0 days, p = 0.007), were more frequently admitted to intensive care (56 vs 15%, p = 0.006), underwent external incision more frequently (31 vs 5%, p = 0.018), and suffered more complications (50 vs 18%, p = 0.022), including re-operation because of abscess recurrence (44 vs 3%, p < 0.001). Nine patients suffered potentially preventable complications. These patients displayed significantly higher C-reactive protein levels, received antibiotics prior to admission more frequently, underwent external incision more commonly, and were admitted to intensive care more frequently compared to other patients.
Conclusion
The majority of patients with PPA were effectively managed by abscess incision, tonsillectomy, and penicillin G ± metronidazole. Cefuroxime-treated patients were more severely ill at time of admission and had worse outcome compared to penicillin-treated patients. We recommend penicillin G + metronidazole as standard treatment for patients with PPA, but in cases with more risk factors for potentially preventable complications, we recommend aggressive surgical and broadened antibiotic therapy, e.g. piperacillin–tazobactam.
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Funding
This work was supported by the Lundbeck Foundation (Grant number: R185-2014–2482), Fonden for lægevidenskabens fremme, and Ørelæge Hans Skovby´s og Hustru Emma Skouby´s Fond.
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TEK: Initiation and design of the study, inclusion of patients, analysis and interpretation of the results, drafting and approval of the manuscript, accountable for all aspects of the work. TG and CA: Design and conduction of microbiological analyses, analysis and interpretation of the results, critical revision, approval of the manuscript, accountable for all aspects of the work. PH, ALC, and AK: Design of the study, inclusion of patients, critical revision, approval of the manuscript; accountable for all aspects of the work. CD, NKP, SM, and HD: Inclusion of patients, critical revision, approval of the manuscript, accountable for all aspects of the work. MR: Analysis and interpretation of the results, critical revision, approval of the manuscript, accountable for all aspects of the work.
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The study was approved by the Ethical Committee of Aarhus County (# 1–10-72–4-16).
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Klug, T.E., Andersen, C., Hahn, P. et al. Clinical evaluation of antibiotic regimens in patients with surgically verified parapharyngeal abscess: a prospective observational study. Eur Arch Otorhinolaryngol 279, 2057–2067 (2022). https://doi.org/10.1007/s00405-021-06962-8
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DOI: https://doi.org/10.1007/s00405-021-06962-8