Journal of the American Veterinary Medical Association · 2022
Surgical treatment of deep neck infections in 19 dogs.
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Rajeev Meenakshi, Wallace Mandy L, Schmiedt Chad W, Grimes Janet A
Аннотация
OBJECTIVE: Describe clinical features, treatment, and outcomes in dogs with deep neck infections.
ANIMALS: 19 dogs undergoing surgical treatment of deep neck infections from January 1, 2015, through December 31, 2020.
PROCEDURES: Retrospective record review was conducted, with data collected including clinical signs; neutrophil-to-lymphocyte ratio (NLR); diagnostic imaging, surgical, and histopathologic findings; and follow-up. Spearman correlation and Wilcoxon rank sum were used to compare variables to NLR.
RESULTS: All dogs had cervical swelling, and 9 were febrile. On CT, a distinct mass or abscess (7/13) or abscessed lymph node (4/13) was common, with contrast enhancement (10/13), fluid tracking (8/13), and displacement of the trachea, pharynx, or larynx (6/13) also frequently seen. Foreign material was suspected on CT for 4 dogs and was identified at surgery or histopathology for 4 dogs, only 1 of which was suspected on CT. Histopathology most commonly revealed pyogranulomatous inflammation (14/15). Increasing NLR was moderately correlated to a decreased duration of clinical signs before presentation (ρ = -0.548; P = .035) and an increased length of hospitalization (ρ = 0.645; P = .009). Bacterial culture was submitted for all dogs, and polymicrobial infections were common (8/19). Broad-spectrum empirical antimicrobials were commonly prescribed. Change in antimicrobial treatment based on culture was uncommon (3/19). All dogs survived to hospital discharge; 18 dogs with long-term follow-up had complete resolution of clinical signs.
CLINICAL RELEVANCE: CT was useful to plan for surgery, and surgical treatment resulted in resolution of clinical signs in all dogs with long-term follow-up available. Empirical antimicrobial treatment, such as amoxicillin-clavulanic acid or ampicillin-sulbactam, should be considered.
ANIMALS: 19 dogs undergoing surgical treatment of deep neck infections from January 1, 2015, through December 31, 2020.
PROCEDURES: Retrospective record review was conducted, with data collected including clinical signs; neutrophil-to-lymphocyte ratio (NLR); diagnostic imaging, surgical, and histopathologic findings; and follow-up. Spearman correlation and Wilcoxon rank sum were used to compare variables to NLR.
RESULTS: All dogs had cervical swelling, and 9 were febrile. On CT, a distinct mass or abscess (7/13) or abscessed lymph node (4/13) was common, with contrast enhancement (10/13), fluid tracking (8/13), and displacement of the trachea, pharynx, or larynx (6/13) also frequently seen. Foreign material was suspected on CT for 4 dogs and was identified at surgery or histopathology for 4 dogs, only 1 of which was suspected on CT. Histopathology most commonly revealed pyogranulomatous inflammation (14/15). Increasing NLR was moderately correlated to a decreased duration of clinical signs before presentation (ρ = -0.548; P = .035) and an increased length of hospitalization (ρ = 0.645; P = .009). Bacterial culture was submitted for all dogs, and polymicrobial infections were common (8/19). Broad-spectrum empirical antimicrobials were commonly prescribed. Change in antimicrobial treatment based on culture was uncommon (3/19). All dogs survived to hospital discharge; 18 dogs with long-term follow-up had complete resolution of clinical signs.
CLINICAL RELEVANCE: CT was useful to plan for surgery, and surgical treatment resulted in resolution of clinical signs in all dogs with long-term follow-up available. Empirical antimicrobial treatment, such as amoxicillin-clavulanic acid or ampicillin-sulbactam, should be considered.