Prof. Dr. Ahmet Özdoğan
ENT — General

Antibiotic Selection in Acute Bacterial Rhinosinusitis

Acute bacterial rhinosinusitis (ABRS) is defined by symptoms persisting ≥10 days or worsening after initial improvement; the AAO-HNS 2015 guideline recommends amoxicillin-clavulanate 875/125 mg twice daily for 5–7 days as first-line treatment.

Within general ENT, Antibiotic Selection in Acute Bacterial Rhinosinusitis is more useful as clinical context than as a single report word. Acute bacterial rhinosinusitis (ABRS) is defined by symptoms persisting ≥10 days or worsening after initial improvement; the AAO-HNS 2015 guideline recommends amoxicillin-clavulanate 875/125 mg twice daily for 5–7 days as first-line treatment. Patient history, objective findings, risk profile and functional loss improve decision quality when reviewed together. the clinical point assessment brings nasal-sinus symptoms, the dictionary entry throat-tonsil context, this topic upper-airway impact and this term sleep links into one ENT frame. The entry makes the finding safety limits, examination priorities and follow-up logic easier to understand. A clinical view of this entry interprets anatomical or symptom definitions together with daily-life impact: Cases meeting ABRS criteria represent only a minority of all acute rhinosinusitis presentations; 70–80% of viral rhinosinusitis resolves spontaneously within 10 days without antibiotics. This keeps repeat testing burden and delayed diagnosis risk in the same frame.

The diagnostic pathway for the clinical point uses history, examination and selected testing as complementary steps. If patient-reported change and clinical findings point in different directions, assessment is widened. the dictionary entry review may combine ENT examination, this entry endoscopic assessment, the clinical point oral cavity-oropharynx inspection and the dictionary entry audiological testing when useful. this topic decisions record fever, this term pain-bleeding pattern, the finding hearing or nasal blockage, this entry sleep impact and the clinical point infection recurrence separately. The examination plan for the dictionary entry is built around duration, side, progression and associated risks rather than one symptom alone: Imaging is not required for uncomplicated ABRS. Previous reports can therefore improve decision quality. The decision stays safe while avoiding unnecessary investigation burden.

The treatment plan for this topic depends on what the finding represents in that patient. Observation, lifestyle adjustment, medication, voice hygiene, allergy control, infection treatment, rehabilitation, endoscopic procedures and the clinical point surgery are compared within the same decision tree. the dictionary entry planning discusses medical treatment, this topic allergy control, this term endoscopic procedures, the finding adenoid-tonsil strategy or this entry airway surgery by indication. Management of the clinical point aims to improve quality of life while protecting breathing, the dictionary entry safety, hearing, swallowing and oncologic risk separately. The goal is a measured pathway that protects safety and function.

After this topic, review does not only ask whether the symptom improved; examination findings, functional gain and safety boundaries are compared as well. this term follow-up compares pain, the dictionary entry nasal openness, this topic sleep quality, this term hearing impact and the finding infection recurrence over time. For this entry, patients learn which findings can be expected and which changes are linked to reassessment. If the clinical point recovery changes with the dictionary entry review with sleep-growth impact in children, frequent infection, fever or airway pressure, reassessment is prioritized.

Online reading about this topic should organize clinical questions rather than decide care; previous tests and treatment responses are easier to use when prepared in chronological order.

Diagnosis

AAO-HNS 2015 ABRS criteria: purulent nasal discharge combined with nasal obstruction and/or facial pain/pressure; symptoms lasting ≥10 days or worsening after initial improvement ('double sickening'). CT imaging is not routinely recommended for uncomplicated ABRS; it is indicated when orbital or intracranial complication is suspected. Transillumination of the sinuses has low diagnostic value.

Treatment

Amoxicillin-clavulanate 875/125 mg twice daily for 5–7 days is first-line therapy (AAO-HNS 2015). Doxycycline 100 mg twice daily is used for penicillin allergy. Azithromycin should be avoided due to 30% S. pneumoniae resistance. Fluoroquinolones are reserved for treatment failure. Saline nasal irrigation as an adjunct is recommended for all patients. Intranasal corticosteroid may reduce symptom severity.

Outcomes and Follow-up

Antibiotic treatment hastens resolution by an average of 2 days in ABRS (NNT=15); the risk of serious complications (orbital/intracranial) without spontaneous resolution is <1% in untreated cases. Clinical response should be assessed at 48–72 hours; lack of response should prompt consideration of an alternative antibiotic or resistant organism. Isolated frontal sinus disease carries a higher complication risk.

When to Seek Care

Emergency presentation is required with periorbital oedema, diplopia, severe headache, neck stiffness, or high fever with facial swelling — all suggesting orbital or intracranial complication. Re-evaluation is indicated if there is no response within 72 hours of appropriate antibiotic therapy, or if symptoms show progressive worsening.

Frequently asked questions

What is Antibiotic Selection in Acute Bacterial Rhinosinusitis?
Acute bacterial rhinosinusitis (ABRS) is defined by symptoms persisting ≥10 days or worsening after initial improvement; the AAO-HNS 2015 guideline recommends amoxicillin-clavulanate 875/125 mg twice daily for 5–7 days as first-line treatment. Within general ENT, Antibiotic Selection in Acute Bacterial Rhinosinusitis is more useful as clinical context than as a single report word.
When is Antibiotic Selection in Acute Bacterial Rhinosinusitis clinically important?
The diagnostic pathway for the clinical point uses history, examination and selected testing as complementary steps. It is assessed together with examination, endoscopy or imaging in nasal, throat, sinus and upper-airway complaints.
When is ENT assessment relevant for Antibiotic Selection in Acute Bacterial Rhinosinusitis?
ENT assessment becomes relevant if symptoms last more than a few weeks, become one-sided or progressive, or are accompanied by breathing, swallowing, voice, hearing or neck-mass findings.
What information helps assessment of Antibiotic Selection in Acute Bacterial Rhinosinusitis?
It is useful to note when symptoms started, which side is affected, previous operations or treatments, current medication, imaging and test reports, and the effect on daily life. It is assessed together with examination, endoscopy or imaging in nasal, throat, sinus and upper-airway complaints.

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References

This glossary entry is for informational purposes only and does not constitute medical advice. Consult a qualified specialist for diagnosis and treatment.

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