The Clinical Dilemma of Adult Airway Obstruction

Tracheobronchial aspiration represents an uncommon yet dangerous emergency in adult medicine. In routine outpatient care, clinicians frequently encounter patients presenting with chronic cough, wheezing, or recurrent lower respiratory tract infections. Because these symptoms mirror asthma or chronic obstructive pulmonary disease, occult aspiration often escapes timely recognition. Consequently, utilizing flexible bronchoscopy foreign body retrieval techniques plays an essential role in reaching an accurate diagnosis. Because adult patients seldom recall choking events, diagnosis often faces substantial delay. Therefore, prompt endoscopic evaluation remains critical to restore airway patency and avert irreversible lung destruction.

Furthermore, prolonged airway obstruction produces recurrent post-obstructive pneumonia, bronchiectasis, and localized atelectasis. While neuromuscular disorders and sedative use heighten risk in older adults, dental procedures and oral habits also predispose younger adults. When unilateral wheezing or focal infiltrates fail to resolve after standard antimicrobial therapy, physicians must consider mechanical obstruction. In addition, timely endoscopic inspection clarifies etiology while preventing secondary inflammatory damage, thereby safeguarding long-term pulmonary function.

Epidemiologic Patterns and Diagnostic Yield

A recent retrospective study examined adult bronchoscopies performed between January 2022 and December 2025. Among 1679 flexible bronchoscopies performed during this interval, operators evaluated twelve adult cases for suspected foreign body aspiration, representing 0.71% of all procedures. Notably, flexible bronchoscopy verified a foreign body in ten patients, achieving an impressive 83.33% diagnostic yield. Furthermore, proceduralists successfully extracted the aspirated object using a flexible bronchoscope in 80% of confirmed cases without surgical intervention. These findings emphasize that flexible bronchoscopy provides excellent diagnostic accuracy and therapeutic efficacy in suspected adult aspiration.

Moreover, demographic analysis revealed a mean age of 48.38 years and an unexpected female preponderance of 62.5%. While international series often report male predominance due to occupational factors, local cultural habits significantly influence regional risk. Specifically, domestic multitasking and customary practices contribute to aspiration among adult women. Consequently, clinicians must recognize that foreign body aspiration does not spare younger, active females without conventional neurological deficits.

Radiological Clues and Flexible Bronchoscopy Foreign Body Detection

Radiological imaging provides vital clues, yet normal radiographs cannot rule out tracheobronchial aspiration. In the retrospective cohort, atelectasis served as the most common radiological finding, highlighting downstream lobar collapse caused by endobronchial occlusion. In addition, direct visualization of the foreign body on initial chest radiographs occurred in five cases, representing 62.5% of confirmed patients. However, radiolucent organic materials frequently escape detection on standard plain radiographs. Consequently, clinicians should obtain high-resolution computed tomography when clinical suspicion persists despite negative baseline films.

Furthermore, computed tomography reveals air trapping, downstream bronchiectasis, and subtle endobronchial lesions. Direct visualization via flexible bronchoscopy foreign body evaluation resolves remaining diagnostic uncertainties. Endoscopy enables clinicians to assess mucosal ulceration, localized granulation tissue, and purulent secretions surrounding the obstruction. Because chronic foreign bodies often provoke exuberant inflammatory pseudotumors that simulate bronchogenic carcinoma, direct endoscopic inspection and biopsy prevent unnecessary radical lung resections.

Organic Foreign Bodies and Retrieval Modalities

The physical nature of the aspirate dictates the procedural strategy and instrument selection. In this study, organic foreign bodies constituted 87.5% of confirmed cases, with betel nut identified as the most frequent offending agent. Organic substances absorb moisture within the bronchial tree, which causes progressive swelling and marked friability. Consequently, inappropriate traction can easily fragment the object, scattering smaller pieces into distal segmental bronchi. Therefore, pulmonologists must plan extraction cautiously, matching appropriate retrieval accessories to the object's physical dimensions.

Specifically, grasping forceps and Dormia baskets served as the primary extraction tools with high procedural success and zero complications. Dormia baskets prove especially effective for capturing smooth, oval objects like betel nuts without crushing them during transit. In contrast, rat-tooth or alligator grasping forceps provide firm traction for irregular fragments. Furthermore, modern interventionists increasingly employ cryoprobes to remove friable or moisture-rich organic debris through cryoadhesion. Equipping modern bronchoscopy suites with diverse extraction instruments ensures consistently high procedural success.

Procedural Safety and Clinical Recommendations

Flexible bronchoscopy demonstrates remarkable procedural safety when performed by experienced pulmonary teams. In the analyzed adult cohort, physicians achieved successful retrieval without any major complications, such as severe hemorrhage, pneumothorax, or laryngeal spasm. While rigid bronchoscopy historically served as the gold standard, flexible instruments easily access peripheral and lower lobe bronchi that rigid barrels cannot reach. Consequently, flexible bronchoscopy represents the preferred first-line diagnostic and therapeutic modality in hemodynamically stable patients facing suspected aspiration.

Nonetheless, clinicians must follow strict safety protocols during every intervention. Pulmonologists should always secure immediate backup access to rigid bronchoscopy equipment and thoracic surgery support. In addition, using an endotracheal tube or laryngeal mask airway prevents accidental loss of the retrieved object in the vocal cords during withdrawal. Finally, operators should perform careful post-retrieval inspection to remove distal secretions and verify mucosal integrity. Meticulous execution safeguards patient stability throughout the procedure.

Frequently Asked Questions

How does foreign body aspiration present differently in adults compared to children?

Children usually present with sudden coughing paroxysms, acute cyanosis, or audible stridor after unobserved choking episodes. In contrast, adults rarely report a clear choking history. Adult patients typically present with non-specific, insidious symptoms such as chronic cough, localized wheezing, hemoptysis, or unresolving focal pneumonia. Consequently, clinicians frequently misdiagnose these cases as adult-onset asthma or chronic obstructive pulmonary disease, delaying definitive endoscopic evaluation for weeks or months.

Why is betel nut aspiration especially common and challenging to manage?

Betel nut chewing is a prevalent cultural habit across India, creating substantial aspiration risks among habitual users. Clinically, betel nut represents an organic foreign body that absorbs airway moisture, expanding within the bronchial lumen and causing complete lobar obstruction. Furthermore, betel nut fragments can elicit intense local chemical bronchitis and friable granulation tissue. Pulmonologists must employ Dormia baskets or specialized grasping forceps to extract the nut without shattering it into distal branches.

When should clinicians prefer rigid bronchoscopy over flexible bronchoscopy?

Although flexible bronchoscopy serves as the initial diagnostic and therapeutic choice for most stable adults, rigid bronchoscopy remains the gold standard in specific critical scenarios. Clinicians prefer rigid bronchoscopy when addressing asphyxiating central airway obstructions, massive hemoptysis, or large, sharp, and firmly impacted metallic foreign bodies. Furthermore, rigid bronchoscopy provides superior airway control, continuous ventilation, and allows the passage of heavy-duty extraction instruments whenever flexible techniques fail or complications arise.

Disclaimer: This content is for informational and educational purposes only and does not constitute medical advice. While we strive to present accurate and evidence-based clinical insights, clinicians and trainees must always verify guidelines, dosages, contraindications, and procedures independently. Medical management must be individualized, considering specific patient needs, institutional protocols, and current medical standards. Healthcare professionals should consult relevant specialist literature and primary sources to confirm findings. The authors and publishers disclaim any liability for adverse outcomes or damages resulting from the application of this information. Refer to the latest local and national guidelines for clinical practice.

References

Kuwal A et al. A retrospective study of flexible bronchoscopic retrieval of airway foreign bodies in adults. Monaldi Arch Chest Dis. 2026 Oct 16. doi: 10.4081/monaldi.2026.4251. PMID: 42886159.

Chi J, Bai Y. Bronchoscopic management of airway foreign bodies in adults: a narrative educational review. Front Med (Lausanne). 2026;13:1779715.

Sehgal IS, Dhooria S, Ram B, et al. Foreign body aspiration in adult airways: therapeutic approach. J Thorac Dis. 2017;9(9):3398-409.