Hospital admissions for acute throat and deep neck infections versus tonsillectomy rates in Germany

To evaluate trends in hospital admissions in Germany for acute infections of the upper airway and deep neck in the context of the number of tonsil-related surgical procedures between 2005 and 2017.

A retrospective longitudinal population-based cohort study was performed including all unplanned admissions for acute pharyngitis/tonsillitis, abscess formation of the peritonsillar or retropharyngeal/parapharyngeal space. Elective procedures included tonsillectomy (with or without adenoidectomy), secondary tonsillectomy, and tonsillotomy. Emergency operations encompassed abscess-tonsillectomy and transoral drainage procedures of the peritonsillar/parapharyngeal/retropharyngeal space.

553.600 admissions were registered in total with a significant, stepwise increase between 2005 and 2017, including retropharyngeal/parapharyngeal abscess (47.0%), acute tonsillitis (30.8%), acute pharyngitis (26.5%) and peritonsillar abscess (7.9%). There were 1.323.984 elective operations with a significant decrease during the study period. A total of 188.316 emergency operations were done, a significant decrease in the number of abscess-tonsillectomies was compensated by the increased number of transoral peritonsillar abscess drainages. The number of transoral parapharyngeal and retropharygeal abscess drainage procedures did not change significantly (p = 0.846; p = 0.846). Negative correlation was significant between admissions for chronic tonsillitis and emergency admissions (Pearson correlation coefficient = - 0.879, p < 0.001) and also between elective and emergency operations (r = - 0.667; p = 0.013).

Concerning infections of the upper airway and deep neck spaces, German Hospitals have to prepare strategies for the increasing challenge by unplanned admissions and emergency operations. Further research is required to clarify whether this phenomenon is caused by the significant decrease in the number of elective operations.