Bronchoscope: Types, Uses, and Safety Guide for Airway Examination

Respiratory Device Airway Examination Diagnostic Tool Pediatric Use Therapeutic Bronchoscopy

What Is a Bronchoscope?

A bronchoscope is a long, thin medical instrument used to look directly inside the airways - the trachea (windpipe) and the bronchi (the two main branches of the airway that lead into the lungs). It is one of the most important diagnostic and therapeutic tools in respiratory medicine.

The device is inserted through the nose or mouth, passes through the throat and vocal cords, and travels down into the airways. A small camera at the tip sends live images to a monitor, allowing a clear view of the inside of the airway. Through the bronchoscope, tissue samples can be collected, fluids can be washed in and suctioned out, and small foreign objects can be removed.

Key Fact Bronchoscopy was first performed in the late 19th century. Today it is a routine, well-established procedure done in hospitals worldwide across all age groups, including newborns and young children.

Where Is a Bronchoscope Used?

Bronchoscopes are used in hospitals, usually in bronchoscopy suites, operating theaters, intensive care units (ICUs), or emergency departments. The setting depends on the reason for the procedure and the condition of the patient.

Setting	Common Use
Bronchoscopy Suite / Endoscopy Unit	Routine diagnostic procedures, planned biopsies
Operating Theater	Rigid bronchoscopy, complex foreign body removal, surgical cases
Intensive Care Unit (ICU)	Airway management, mucus plug removal, ventilated patients
Emergency Department	Urgent airway assessment, acute foreign body aspiration
Neonatal / Pediatric ICU	Evaluation of stridor, airway anomalies in infants and children

Purpose and Uses of a Bronchoscope

Bronchoscopes serve two broad functions - diagnostic (finding the problem) and therapeutic (treating the problem).

Diagnostic Uses

Examining the airways for abnormalities such as narrowing (stenosis), inflammation, or growths
Identifying the cause of persistent cough, unexplained wheezing, or repeated chest infections
Collecting tissue samples (biopsy) from the lungs or airway walls for laboratory testing
Performing Bronchoalveolar Lavage (BAL) - washing the airways to collect cells and fluid for infection or inflammation testing
Evaluating bleeding from the lungs (haemoptysis)
Checking the airways before and after surgery or intubation
Assessing congenital airway abnormalities in infants and children (e.g., tracheomalacia, laryngomalacia, subglottic stenosis)

Therapeutic Uses

Removing inhaled foreign bodies (coins, seeds, food pieces) from the airway - particularly in children
Clearing thick mucus plugs that block the airway
Guiding the placement of a breathing tube (endotracheal tube) during difficult intubation
Stopping bleeding from the airway using direct application of medicine or laser
Dilating (widening) a narrowed airway segment
Placing airway stents in patients with structural airway problems
Delivering medicines directly into the lung areas affected by infection

Important Fact: Foreign Body Aspiration in Children One of the most common emergency uses of a bronchoscope in pediatric care is removing an inhaled foreign body. Young children frequently inhale small objects. The rigid bronchoscope is the preferred tool for safe and complete removal.

Types of Bronchoscopes

There are two main types of bronchoscopes, each designed for different situations. Newer digital and ultrasound-integrated versions build upon these core types.

Flexible Bronchoscope

A thin, bendable tube made of fiber-optic or video technology. It can navigate the curved parts of the airway and reach smaller, deeper branches (segmental bronchi). Widely used for diagnostic procedures, BAL, and guided biopsies. Used in conscious or lightly sedated patients. Available in very small sizes for use in newborns and infants.

Rigid Bronchoscope

A straight, hollow metal tube that provides a wider channel. It allows better control of the airway, larger instruments, and bigger suction capacity. Preferred for foreign body removal, laser therapy, and managing airway bleeding. Always performed under general anaesthesia in an operating room.

Video Bronchoscope

A modern flexible bronchoscope with a tiny high-definition camera built into the tip instead of fiber-optic bundles. It produces sharper, clearer images on a high-definition monitor and is now the standard in most advanced centres.

Endobronchial Ultrasound (EBUS) Bronchoscope

A specialized flexible bronchoscope with an ultrasound probe at the tip. It allows real-time imaging of lymph nodes and structures just outside the airway wall, enabling guided needle biopsy (EBUS-TBNA) without open surgery. Used in adult medicine mainly for lung cancer staging.

Feature	Flexible Bronchoscope	Rigid Bronchoscope
Shape	Bendable, thin	Straight, hollow metal tube
Anaesthesia	Sedation or local anaesthesia	General anaesthesia always
Depth reached	Smaller, deeper airways	Main airways (trachea, main bronchi)
Best for	Diagnosis, BAL, biopsy, ICU use	Foreign body, laser, bleeding control
Paediatric use	All ages including newborns	All ages, commonly used in children
Working channel	Narrow (limits instrument size)	Wide (larger instruments possible)

How a Bronchoscopy Is Performed - Step by Step

The following is a general overview of how a bronchoscopy procedure is carried out. The exact steps may vary depending on the type of bronchoscope used, the age of the patient, and the reason for the procedure.

Before the Procedure

FastingThe patient is asked to avoid food and fluids for a specific number of hours before the procedure (usually 4-6 hours for solids, 2 hours for clear fluids). This reduces the risk of inhaling stomach contents during the procedure.

Assessment and ConsentA review of the patient's medical history, current medicines, allergies, and blood tests is done. Consent is obtained after explaining the procedure, its purpose, and its risks.

PreparationAn intravenous (IV) line is inserted. Monitoring equipment for oxygen saturation, heart rate, and blood pressure is applied. A numbing spray (local anaesthetic) may be applied to the nose or throat. Sedation medication is given through the IV line, or general anaesthesia is administered for rigid bronchoscopy.

During the Procedure

PositioningThe patient lies flat on their back. Supplemental oxygen is given throughout the procedure.

InsertionThe bronchoscope is gently passed through the nose or mouth, past the vocal cords, and into the trachea. Additional local anaesthetic may be sprayed onto the vocal cords and into the airway as the scope advances.

Airway ExaminationThe bronchoscopist carefully advances the scope and examines the airway walls from the trachea down through both main bronchi and their branches. Live images are viewed on a monitor.

Procedure (if needed)Depending on the reason for bronchoscopy, one or more of the following may be done: BAL fluid collection, biopsy using small forceps, foreign body removal, mucus clearance, or balloon dilation.

WithdrawalOnce the examination and any procedure are complete, the bronchoscope is carefully and slowly withdrawn.

After the Procedure

RecoveryThe patient is moved to a recovery area and monitored until the sedation wears off fully. Oxygen saturation and vital signs are watched closely.

RestrictionsEating and drinking are usually restricted for 1-2 hours after the procedure until the numbing effect of the local anaesthetic has completely worn off. This prevents accidental choking.

ReviewThe bronchoscopist reviews findings, preliminary results, and next steps. Laboratory results from biopsies or BAL fluid may take a few days to return.

Note on Paediatric Bronchoscopy In infants and young children, even flexible bronchoscopy is usually performed under deep sedation or general anaesthesia because cooperation is not possible. The procedure is always carried out by trained specialists with appropriate paediatric equipment and monitoring.

Precautions and Risks

Bronchoscopy is generally considered a safe procedure when performed by trained professionals with appropriate equipment. However, like any medical procedure involving anaesthesia and access to the airway, certain risks and precautions apply.

Common Precautions Before the Procedure

Correct fasting duration must be followed strictly
Blood-thinning medications (anticoagulants) may need to be paused before biopsy procedures
Existing lung conditions such as asthma or low oxygen levels need to be optimised first
The procedure should be performed only by trained bronchoscopists with proper monitoring equipment
Emergency resuscitation equipment must be available at all times
Written informed consent must be obtained from the patient or legal guardian

Possible Risks and Complications

Important: Complications Are Uncommon But Can Occur The risks listed below are recognised complications. The actual risk for any individual depends on age, health status, type of procedure, and the setting. Serious complications are rare when the procedure is done by experienced teams.

Complication	Description	Frequency
Low oxygen (hypoxia)	Temporary drop in blood oxygen during the procedure	Common, monitored and managed in real time
Bleeding	Small amount of blood-streaked sputum after biopsy; significant bleeding is rare	Minor: uncommon; Major: rare
Bronchospasm	Sudden tightening of the airway, causing coughing and breathlessness	Uncommon
Pneumothorax	Air leak causing lung collapse - more likely after certain types of biopsy	Rare (more with transbronchial biopsy)
Fever / Infection	Mild fever after BAL is common and usually short-lived; infection is rare	Mild fever: uncommon; Serious infection: rare
Laryngospasm	Sudden closure of the vocal cords - can be serious if untreated	Rare
Cardiac arrhythmia	Irregular heartbeat, particularly in patients with existing heart conditions	Uncommon
Adverse drug reaction	Reaction to sedative or local anaesthetic agents	Rare

When Bronchoscopy Should Not Be Done (Contraindications)

Severely unstable airway or uncontrolled very low oxygen levels that cannot be corrected
Uncorrected bleeding disorders (especially before biopsy procedures)
Very recent heart attack (within 4-6 weeks) unless there is a life-threatening indication
Absence of trained personnel or emergency backup

Bronchoscope in Children: Special Considerations

Bronchoscopy in infants and children requires extra precautions compared to adults. The airway in children is smaller, softer, and more reactive. Even a small amount of swelling can significantly reduce airway diameter.

Paediatric bronchoscopes come in very small external diameters (some as small as 2.2 mm for premature newborns)
General anaesthesia is more commonly used in children to ensure safety and cooperation
The team must include personnel experienced in paediatric airway management
Doses of all sedative and anaesthetic drugs are carefully calculated based on weight
Recovery and monitoring are longer in young children and infants
Foreign body aspiration is one of the most common indications in children aged 6 months to 3 years
Evaluation of stridor (noisy breathing) and congenital airway problems are important paediatric uses

Stridor in Infants Stridor is a noisy, high-pitched sound during breathing that may indicate a narrowing or obstruction in the airway. Flexible bronchoscopy is the key diagnostic tool to identify the cause - whether it is laryngomalacia, tracheomalacia, a web, a cyst, or subglottic stenosis.

Frequently Asked Questions

Is a bronchoscopy painful?

The procedure itself is not painful. Local anaesthetic is used to numb the throat and airway, and sedation is given to keep the patient comfortable and relaxed. Some discomfort such as a cough or a feeling of pressure may be experienced. In children, general anaesthesia is used so they are fully asleep and feel nothing during the procedure.

How long does a bronchoscopy take?

The actual examination usually takes between 15 and 45 minutes. More complex procedures such as foreign body removal or laser therapy may take longer. Total time including preparation and recovery is usually 2 to 4 hours.

Is bronchoscopy safe for newborns and young infants?

Yes, when performed by an experienced paediatric bronchoscopist with appropriate equipment and monitoring. Ultra-thin bronchoscopes are designed for use in very small patients. Safety depends heavily on the skill of the team and the availability of proper paediatric facilities.

What can be seen during bronchoscopy that an X-ray or CT scan cannot show?

Bronchoscopy provides direct, real-time visual information about the inner surface of the airway - including subtle mucosal changes, dynamic airway collapse during breathing, small foreign bodies, and areas of bleeding that imaging scans cannot reliably detect. It also allows direct tissue sampling.

Can a bronchoscopy remove a foreign body completely?

Yes. Rigid bronchoscopy under general anaesthesia is the standard and most effective method for removing foreign bodies from the airway. Success rates are very high when performed by experienced teams in appropriate settings.

Can the procedure be done in the ICU on a patient who is on a ventilator?

Yes. Flexible bronchoscopy can be performed through an endotracheal tube or tracheostomy in ventilated patients in the ICU. It is used to clear mucus plugs, collect BAL samples, and assess the airway in critically ill patients.

How long does recovery take after bronchoscopy?

Most patients recover within a few hours after a routine flexible bronchoscopy. There may be a mild sore throat, hoarse voice, or small amount of blood-streaked sputum, all of which usually resolve within 24 hours. After general anaesthesia for rigid bronchoscopy, recovery may take longer and usually requires overnight observation in children.

What is Bronchoalveolar Lavage (BAL)?

BAL is a technique performed during bronchoscopy where a small volume of sterile saline is passed through the bronchoscope into a section of the lung and then suctioned back. The recovered fluid contains cells and organisms from the lower airway and is sent to a laboratory for analysis. It is widely used to diagnose infections, inflammation, and interstitial lung diseases.

What is the difference between bronchoscopy and laryngoscopy?

Laryngoscopy examines the larynx (voice box) and the area above the vocal cords. Bronchoscopy goes further down - past the vocal cords and into the trachea and bronchi (the lungs' airways). Flexible bronchoscopy actually begins with a laryngoscopic view and then continues deeper.

Are there alternatives to bronchoscopy?

Chest X-ray and CT scan provide structural imaging but cannot directly visualise the airway interior or allow sample collection. For certain diagnoses, sputum analysis or non-bronchoscopic lavage may be considered. However, for direct airway visualisation and therapeutic procedures, bronchoscopy has no equivalent substitute.

Care and Storage of the Bronchoscope

Bronchoscopes are precision medical instruments that require careful handling, cleaning, and storage after each use. Improper handling can damage the scope and - most critically - lead to cross-infection between patients.

After Each Use - Reprocessing Steps

Pre-cleaning at BedsideImmediately after the procedure, the outer surface of the bronchoscope is wiped and channels are flushed with water and detergent at the point of use to prevent organic matter from drying inside.

Leak TestingBefore full cleaning, a leak test is performed to check if the bronchoscope has any damage to its protective covering. A damaged scope must not be submerged and must be sent for repair immediately.

Manual CleaningThe scope is submerged in an approved enzymatic detergent solution and all accessible channels are brushed and flushed thoroughly to remove all organic debris. This step is the most critical for effective disinfection.

High-Level Disinfection (HLD)After manual cleaning, the bronchoscope undergoes high-level disinfection using an approved chemical (such as glutaraldehyde, ortho-phthalaldehyde, or peracetic acid) for the required contact time. This eliminates bacteria, viruses, and fungi. Automated endoscope reprocessors (AERs) are commonly used for this step in larger centres.

Rinsing and DryingThe bronchoscope is thoroughly rinsed with sterile or filtered water to remove all disinfectant residues. It is then dried completely - particularly inside the channels - using compressed air. Residual moisture promotes bacterial growth during storage.

StorageThe bronchoscope is stored hanging vertically in a dedicated drying/storage cabinet with adequate airflow. It must never be stored coiled tightly, in a sealed pouch while damp, or in a non-ventilated space. Accessories and biopsy forceps require sterilisation (not just disinfection) between uses.

Infection Prevention is Critical Inadequate cleaning and disinfection of bronchoscopes has been the documented cause of hospital outbreaks of infections including drug-resistant bacteria. Strict adherence to reprocessing guidelines from recognised bodies (such as ESGE, BSG, SGNA, and local health authority guidelines) is essential.

General Handling and Maintenance Tips

Bronchoscopes should never be dropped or have the insertion tube bent at sharp angles
The tip of the scope must be handled gently - the camera and working channel exit are delicate
Regular preventive maintenance checks should be scheduled as per the manufacturer's recommendations
Any crack, discolouration of the insertion tube, failure of angulation, or poor image quality should be reported and the scope taken out of service for inspection
Single-use components (certain biopsy forceps, brushes, and sheaths) must not be reused between patients

Key Technical Components of a Bronchoscope

Component	Function
Control Body (Handle)	Held by the operator; contains the angulation knob, suction button, and working channel port
Insertion Tube	The long, flexible shaft that enters the airway; available in various diameters depending on patient size
Bending Section (Distal Tip)	The steerable end of the scope that can be angulated up/down and left/right to navigate the airway
Working Channel	A hollow channel running the length of the scope for suction, fluid instillation, and passing instruments
Light Source / Camera	Provides illumination and captures images; fiber-optic in older models, digital chip (CCD/CMOS) in video bronchoscopes
Monitor / Processor	Displays and records the live video feed from the camera at the tip
Suction Connector	Connects the scope to external suction for clearing secretions

Suggested References and Learning Resources

The following authoritative sources provide detailed clinical and technical information on bronchoscopy:

Books: Kendig and Wilmott's Disorders of the Respiratory Tract in Children; Taussig and Landau - Pediatric Respiratory Medicine; Murray and Nadel's Textbook of Respiratory Medicine; Fleisher and Ludwig's Textbook of Pediatric Emergency Medicine
Guidelines: European Respiratory Society (ERS) guidelines on flexible bronchoscopy; British Thoracic Society (BTS) guidelines on diagnostic flexible bronchoscopy in adults and children
Websites: www.ers.org (European Respiratory Society); www.brit-thoracic.org.uk (British Thoracic Society); www.thoracic.org (American Thoracic Society); www.who.int for infection prevention resources

Medical Disclaimer The information on this page is intended for general educational purposes only. It does not replace professional medical advice, clinical judgment, or individual assessment by a qualified healthcare professional. Bronchoscopy is a medical procedure that must be performed only by appropriately trained specialists in a suitable clinical setting with proper monitoring and emergency support. Do not use this information to make clinical decisions or to perform or request any medical procedure independently. If there are concerns about a respiratory condition, consult a qualified healthcare provider.

Reviewed and verified by a Pediatrician | PediaDevices

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