Sinusitis, Acute, Medical Treatment Clinical Presentation

  • Author: Steven E Sobol, MD, FRCSC, MSc, FAAP; Chief Editor: Arlen D Meyers, MD, MBA   more...
 
Updated: Nov 19, 2009
 

History

Acute sinusitis is a clinical diagnosis; thus, an understanding of its presentation is of paramount importance in differentiating this entity from allergic or vasomotor rhinitis and common URTIs. No specific clinical symptom or sign is sensitive or specific for acute sinusitis, so the overall clinical impression should be used to guide management.

A consensus statement published in Otolaryngology-Head and Neck Surgery made strong recommendations that clinicians should distinguish between acute rhinosinusitis caused by bacterial causes and those episodes caused viral upper respiratory infections and noninfectious conditions.[3] The panel suggests that the diagnosis of acute bacterial sinusitis be entertained when (a) symptoms or signs of acute rhinosinusitis are present 10 days or more beyond the onset of upper respiratory symptoms, or (b) symptoms or signs of acute rhinosinusitis worsen within 10 days after an initial improvement. A history of purulent secretions and facial or dental pain are specific symptoms that may point to a bacterial etiology. In a patient in intensive care, acute sinusitis should be suspected in the presence of sepsis of unknown origin.

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Physical

Anterior rhinoscopic examination, with or without a topical decongestant, is important to assess the status of the nasal mucosa and the presence and color of nasal discharge. Predisposing anatomical variations can also be noted during anterior rhinoscopy. Sinus transillumination and palpation are of little predictive value. A basic evaluation of ocular and neurological function is also necessary in order to rule out potential complications.

Endoscopic examination may reveal the origin of the purulent discharge from the middle meatus and may provide information about the nature of ostiomeatal obstruction. The use of endoscopy may also aid in the etiologic diagnosis of acute sinusitis by allowing the careful attainment of purulent secretions from the sinus ostia for culture.

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Causes

The bacteria most commonly involved in acute sinusitis are part of the normal nasal flora. These bacteria can become sinus pathogens when they are deposited into the sinuses by sneezing, coughing, or direct invasion under conditions that optimize their growth. The most common bacterial pathogens in acute sinusitis are Streptococcus pneumoniae (30-40%), Haemophilus influenzae (20-30%), and Moraxella catarrhalis (12-20%). Staphylococcus aureus and Streptococcus pyogenes are isolated in rare cases. Sixty-six percent of patients with acute sinusitis grow at least 1 pathogenic bacterial species on sinus aspirates, while 26-30% percent of patients have multiple predominant bacterial species.

Anaerobic organisms have been found in fewer than 10% of patients with acute bacterial sinusitis, despite the ample environment available for their growth. The exceptions are in sinusitis resulting from a dental source and in patients with chronic sinus disease, in whom anaerobic organisms are usually isolated.

Gram-negative organisms, including Pseudomonas aeruginosa (15.9%), Escherichia coli (7.6%), Proteus mirabilis (7.2%), Klebsiella pneumoniae, and Enterobacter species, predominate in nosocomial sinusitis, accounting for 60% of cases. Polymicrobial invasion is seen in 25-100% of cultures. The other pathogenic organisms found in nosocomial patients are gram-positive organisms (31%) and fungi (8.5%). Viruses are the most common trigger of acute sinusitis. Rhinovirus, influenza, and parainfluenza viruses are the primary pathogens in 3-15% of patients with acute sinusitis.

Fungal causes of sinusitis are discussed in Allergic Fungal Sinusitis and Sinusitis, Fungal.

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Contributor Information and Disclosures
Author

Steven E Sobol, MD, FRCSC, MSc, FAAP  Assistant Professor, Director of Pediatric Otolaryngology, Department of Otolaryngology Head and Neck Surgery, Emory University School of Medicine; Otolaryngologist-In-Chief, Children's Healthcare of Atlanta at Egleston

Steven E Sobol, MD, FRCSC, MSc, FAAP is a member of the following medical societies: American Academy of Otolaryngology-Head and Neck Surgery

Disclosure: Nothing to disclose.

Coauthor(s)

Melvin D Schloss, MD, FRCSC  Director of Pediatric Otolaryngology, Professor, Department of Otolaryngology, McGill University, Canada

Melvin D Schloss, MD, FRCSC is a member of the following medical societies: American Academy of Otolaryngology-Head and Neck Surgery, American Academy of Pediatrics, Quebec Medical Association, and Royal College of Physicians and Surgeons of Canada

Disclosure: Nothing to disclose.

Ted L Tewfik, MD, FRCS(C)  Professor, Department of Otolaryngology, Director of Continuing Medical Education of Otolaryngology, McGill University Medical School; Director, Director of Professional Affairs of Otolaryngology, Department of Otolaryngology, Montreal Children's Hospital; Senior Staff, Montreal General Hospital and Royal Victoria Hospital

Ted L Tewfik, MD, FRCS(C) is a member of the following medical societies: American Academy of Otolaryngology-Head and Neck Surgery, American College of Surgeons, American Society of Pediatric Otolaryngology, Canadian Medical Association, Canadian Society of Otolaryngology-Head & Neck Surgery, Quebec Medical Association, and Royal College of Physicians and Surgeons of Canada

Disclosure: Nothing to disclose.

Specialty Editor Board

Jack A Coleman, MD  Consulting Staff, Franklin Surgical Associates

Jack A Coleman, MD is a member of the following medical societies: American Academy of Facial Plastic and Reconstructive Surgery, American Academy of Otolaryngic Allergy, American Academy of Otolaryngology-Head and Neck Surgery, American Academy of Sleep Medicine, American Bronchoesophagological Association, American College of Surgeons, American Laryngological Rhinological and Otological Society, American Society for Laser Medicine and Surgery, and Association of Military Surgeons of the US

Disclosure: accarent, inc Honoraria Speaking and teaching

Francisco Talavera, PharmD, PhD  Senior Pharmacy Editor, eMedicine

Disclosure: eMedicine Salary Employment

Stephen G Batuello, MD  Consulting Staff, Colorado ENT Specialists

Stephen G Batuello, MD is a member of the following medical societies: American Academy of Otolaryngology-Head and Neck Surgery, American College of Physician Executives, American Medical Association, and Colorado Medical Society

Disclosure: Nothing to disclose.

Christopher L Slack, MD  Otolaryngology-Facial Plastic Surgery, Private Practice, Associated Coastal ENT; Medical Director, Treasure Coast Sleep Disorders

Christopher L Slack, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Facial Plastic and Reconstructive Surgery, American Academy of Otolaryngology-Head and Neck Surgery, and American Medical Association

Disclosure: Nothing to disclose.

Chief Editor

Arlen D Meyers, MD, MBA  Professor, Department of Otolaryngology-Head and Neck Surgery, University of Colorado School of Medicine

Arlen D Meyers, MD, MBA is a member of the following medical societies: American Academy of Facial Plastic and Reconstructive Surgery, American Academy of Otolaryngology-Head and Neck Surgery, and American Head and Neck Society

Disclosure: Covidien Corp Consulting fee Consulting; US Tobacco Corporation unstricted gift unknown; Axis Three Corporation Ownership interest Consulting; Omni Biosciences Ownership interest Consulting; Sentegra Ownership interest Board membership; Syndicom Ownership interest Consulting; Oxlo Consulting; Medvoy Ownership interest Management position

References

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Air-fluid level (arrow) in the maxillary sinus suggests sinusitis.
Table 1. Dosage, Route, and Spectrum of Activity of Commonly Used First-Line Antibiotics*
Antibiotic Dosage Streptococcus pneumoniaeHaemophilus influenzaeMoraxella catarrhalisAnaerobic bacteria
SensitiveIntermediateResistant
Amoxicillin500 mg PO tid++++++++++
Clarithromycin250-500 mg PO bid+++++++++++
Azithromycin500 mg PO first day, then



250 mg/d PO for 4 days



+++++++++++
Table 2. Dosage, Route, and Spectrum of Activity of Commonly Used Second-Line Antibiotics*
Antibiotic Dosage Streptococcus pneumoniaeHaemophilus influenzaeMoraxella catarrhalisAnaerobic bacteria
SensitiveIntermediateResistant
Amoxicillin/clavulanate500 mg PO tid+++++++++++++++
Cefuroxime250-500 mg PO bid+++++++++++++
Cefpodoxime



+



cefixime



200 mg PO bid



400 mg/d PO



-



++



+++



-



++



-



+



+++



+++



+++



+++



-



Ciprofloxacin500-750 mg PO bid++++++++++
Levofloxacin500 mg/d PO++++++++++++++++++
Trovafloxacin200 mg/d PO++++++++++++++++++
Clindamycin300 mg PO tid+++++++++--+++
Metronidazole500 mg PO tid-----+++
Table 3. Dosage, Route, and Spectrum of Activity of Commonly Used Intravenous Antibiotics*
Antibiotic Dosage Streptococcus pneumoniaeHaemophilus influenzaeMoraxella catarrhalisGram-negative Anaerobic bacteria
Piperacillin3-4 g IV q4-6h++++-++++++
Piperacillin/tazobactam3.375 g IV q6h++++++++++++++
Ticarcillin3 g IV q4h+++--+++++
Ticarcillin/clavulanate3.1 g IV q4h++++++-+++++
Imipenem500 mg IV q6h+++++++++++++++
Meropenem1 g IV q8h++++++++++++++
Cefuroxime1 g IV q8h+++++++++++++
Ceftriaxone2 g IV bid++++++++++++++
Cefotaxime2 g IV q4-6h++++++++++++++
Ceftazidime2 g IV q8h++++++++++++++
Gentamicin1.7 mg/kg IV q8h-++++++++-
Tobramycin1.7 mg/kg IV q8h-++++++++-
Vancomycin1 g IV q6-12h+++---++
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