Bonus Material-24_CHEST Pulmonary Board Review-Combined Talk-Wahidi-2025

Pdf Summary

This comprehensive document by Dr. Momen M. Wahidi covers diagnostic bronchoscopy focusing on patient evaluation, procedural considerations, complications, and large airway disorders.

<strong>Pre-Procedure Evaluation</strong>: Bronchoscopy is generally safe but requires thorough patient assessment including airway difficulty, comorbidities, and current medications. The ASA physical status classification (I-V) aids in risk stratification. The Mallampati score helps predict difficult intubation. Special considerations apply to COPD, asthma (nebulized bronchodilators pre-procedure recommended), and morbid obesity (anticipate difficult airway, consider anesthesia support).

<strong>Sedation and Topical Anesthesia</strong>: Lidocaine is preferred for topical anesthesia due to safety over benzocaine or tetracaine. The total lidocaine dose must be monitored (<7 mg/kg) to prevent toxicity. Anticholinergics like atropine show no significant benefit. Aspirin need not be stopped before bronchoscopy; Clopidogrel should be withheld 5-7 days prior.

<strong>Morbidity and Mortality</strong>: Bronchoscopy has low complication (0.1-0.3%) and mortality rates (0.01-0.04%), but transbronchial biopsies carry higher risks such as pneumothorax and hemorrhage. Bleeding risk assessment is important; active coagulation disorders or organ dysfunction warrant testing.

<strong>Large Airway Disorders</strong>: The document distinguishes tracheobronchomalacia (TBM, cartilage weakening) and excessive dynamic airway collapse (EDAC, membranous wall laxity), both causing airway collapse and symptoms like dyspnea and chronic cough. Diagnosis relies on dynamic CT and flexible bronchoscopy during breathing maneuvers. Management starts conservatively addressing comorbidities, pulmonary rehab, and CPAP. Surgical options like tracheobronchoplasty are reserved for severe, selected cases.

<strong>Central Airway Obstruction</strong>: Caused by malignant tumors, benign strictures, or inflammatory diseases, with bronchoscopic evaluation guiding surgical or nonsurgical treatment including stenting and dilation. Therapeutic bronchoscopy in malignant obstruction improves airway patency, symptoms, and may reduce ventilator dependence.

<strong>Foreign Body Aspiration</strong>: Primarily affects children but also adults with risk factors like neurological disorders or sedation. Symptoms include cough, wheeze, and chest pain; imaging and bronchoscopy (flexible first-line; rigid if needed) are diagnostic and therapeutic. Prompt airway control and removal techniques are critical.

<strong>Key Clinical Points</strong>:
- Careful pre-bronchoscopy evaluation is essential.
- Pre-procedure bronchodilators are advised in asthma.
- Monitor lidocaine dose to avoid toxicity.
- Aspirin can be continued; stop Clopidogrel before biopsy.
- Use dynamic imaging and bronchoscopy to diagnose TBM/EDAC.
- Surgical treatment is limited by lesion location and patient status.
- Maintain high suspicion of foreign body aspiration in unexplained airway symptoms.

This resource emphasizes a multidisciplinary, evidence-based approach for safe, effective bronchoscopy and management of complex airway disorders.

Meta Tag

Concept Bronchoscopy

Concept Preprocedural Assessment

Concept Bronchoscopy-related bleeding

Concept Large Airway Disorder

Concept Tracheobronchomalacia

Keywords

bronchoscopy

pre-procedure evaluation

lidocaine toxicity

tracheobronchomalacia

excessive dynamic airway collapse

central airway obstruction

transbronchial biopsy

foreign body aspiration

airway stenting

dynamic bronchoscopy

Bronchoscopy

Preprocedural Assessment

Bronchoscopy-related bleeding

Large Airway Disorder

Tracheobronchomalacia