Related Experiment Video
Updated: May 23, 2025

Efficient Nucleic Acid Extraction and 16S rRNA Gene Sequencing for Bacterial Community Characterization
Published on: April 14, 2016
Throat Swabs- Do They Tell the Entire Story
Ajaykumar Prabakar1, Thirunavukarasu Palanisamy1, Eileen Benny Kuriakose1
1Department of ENT, Head and Neck Surgery, Sri Ramachandra Institute of Higher Edcuation and Research, Chennai, Tamil Nadu India.
Insights
Microbial cultures from tonsil and adenoid tissues in children with recurrent adenotonsillitis reveal significant bacterial presence, differing from surface swabs. Streptococcus and Enterococcus species were most common, with Ciprofloxacin showing high susceptibility.
Area of Science:
- Otolaryngology
- Microbiology
- Pediatric Infectious Diseases
Background:
- Recurrent adenotonsillitis is a common pediatric condition.
- Understanding the microbial landscape within tonsillar and adenoid tissues is crucial for effective management.
Purpose of the Study:
- To compare microbial profiles from tonsil surface, tonsil core, and adenoid core cultures in pediatric patients with recurrent adenotonsillitis.
- To identify prevalent microorganisms and their antibiotic susceptibility patterns in these tissues.
Main Methods:
- Prospective study involving 91 pediatric patients (5-18 years) undergoing tonsillectomy/adenoidectomy.
- Collection and aerobic culture/sensitivity analysis of throat swabs, tonsil cores, and adenoid cores.
- Preoperative antibiotic administration (Amoxicillin with Clavulanic acid) noted.
Main Results:
- Throat swabs yielded no pathogenic organisms; tonsil and adenoid cores showed 91% and 80% growth, respectively.
- Predominant organisms were Streptococcus and Enterococcus species.
- Ciprofloxacin demonstrated the highest susceptibility among tested antibiotics.
Conclusions:
- Microbial colonization is significantly higher within tonsil and adenoid tissues compared to the surface in recurrent adenotonsillitis.
- Identified pathogens and their sensitivities can inform targeted antibiotic strategies.
- Further research into tissue-specific microbial profiles may optimize treatment outcomes.
Abstract:
This study compares the microbial profiles obtained from tonsil surface culture, tonsil core culture, and adenoid core culture in pediatric patients with recurrent adenotonsillitis. Conducted at a tertiary care center in Chennai, Tamil Nadu over two years, the study enrolled pediatric patients (5-18 years) diagnosed with recurrent adenotonsillitis undergoing tonsillectomy with or without adenoidectomy. Throat swabs were collected preoperatively for culture and sensitivity, and a preoperative dose of Inj. Amoxicillin with Clavulanic acid was administered. Tissue samples obtained during surgery were subjected to aerobic culture and sensitivity analysis. A total of 91 patients were included in the study. None of the throat swabs yielded pathogenic organisms, while 91% and 80% of the tonsil and adenoid cores yielded growth on culture, respectively. The most common organisms isolated from tonsil and adenoid core cultures were Streptococcus species and Enterococcus. In 62% of cases, the same organism was obtained from both tonsil and adenoid cores, while it differed in 11% of cases. No growth was observed in 10% of cases. The antibiotic sensitivity profile showed that Ciprofloxacin was the drug to which most organisms were susceptible. This study highlights the microbial diversity within tonsillar and adenoidal tissues in pediatric patients with recurrent adenotonsillitis. Understanding these patterns can aid in optimizing the management strategies and improving patient outcomes.
Related Concept Videos
Acute Pharyngitis
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Sputum Studies II: Culture and Sensitivity
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
The test can identify various pathogens responsible for respiratory infections, including Streptococcus,...
Chronic Pharyngitis
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Tonsillitis I: Introduction
Etiology
Three primary contributing factors have been identified.
Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture
Gram Stain
The Gram Stain is an integral part of sputum studies. It involves the staining of sputum, which permits...

