A bronchoscopy is a diagnostic procedure where the doctor uses a thin, flexible scope with a camera on the end to look directly inside your airways — your trachea and bronchi. It is used when simpler tests can't figure out the cause of a persistent respiratory problem, or when a direct look inside the airways is needed to confirm a diagnosis.

At Kim Joo-in Internal Medicine Clinic in Seomyeon, Busan, bronchoscopy is available in an English-speaking setting, making it accessible to foreigners who would otherwise have to navigate a Korean-language university hospital for the same procedure.

When is a bronchoscopy needed?

Bronchoscopy is usually ordered when you have symptoms that don't have a clear explanation from history, physical exam, and basic tests. The most common reasons include:

• Unexplained chronic cough that has not responded to standard treatment
• Persistent hoarse voice without a clear cause
• Blood in the sputum (hemoptysis) — one of the most important reasons to investigate the airways directly
• Suspected lung cancer — bronchoscopy allows the doctor to both see the suspected area and take a tissue biopsy
• Unexplained shortness of breath
• Obtaining samples to diagnose pneumonia, tuberculosis, or other infections when sputum tests are not conclusive
• Evaluating bronchiectasis, lung abscess, or other chronic lung conditions
• Removing mucus plugs or foreign objects stuck in an airway

In short, it is done when the doctor needs to know what is happening inside the airways, not just what can be seen from outside.

How to prepare

Bronchoscopy requires a few simple but important preparations:

• Eat a light dinner the night before your procedure.
• Fast after 10 PM the night before — no food or drink until after the procedure. This is to reduce the risk of stomach contents coming up during the procedure.
• Tell the doctor about all medications you take, especially blood thinners (aspirin, warfarin, etc.).
• Mention any known medication allergies, particularly to anesthetics.
• Arrange for someone to accompany you home if possible. You should not drive for the rest of the day because of residual anesthesia effects.

What the procedure involves

Bronchoscopy is a short procedure, but the preparation makes it feel longer than it actually is. Here is what happens step by step:

1. Instructions and positioning

Before starting, the technician or doctor will explain a few simple signals you will use during the test — for example, raising your hand if you need to pause. You will lie back on an exam table.

2. Throat anesthesia

Because the bronchoscope passes through your mouth and throat, the throat needs to be numbed first. This is done in two steps:

1. You gargle a local anesthetic for about 10 minutes and then spit it out.
2. The doctor sprays more anesthetic into the back of your throat.

The numbing process takes about 20-30 minutes. Your throat will feel numb and slightly odd — some patients describe it as feeling like their throat is "not theirs."

3. The bronchoscopy itself

Once the anesthesia takes effect, the doctor gently guides the flexible bronchoscope through your mouth, past your vocal cords, and into your trachea and bronchi. The scope has a camera and a small channel for passing instruments if a biopsy or sample is needed.

The actual bronchoscopy usually takes under 10 minutes for a standard diagnostic exam. If a biopsy, sampling, or therapeutic intervention (like removing mucus) is needed, it may take longer.

4. Total visit time

From arrival through anesthesia, procedure, and initial recovery, the total visit is usually 30 minutes to 1 hour.

What you might feel during the procedure

The most common sensations patients report are:

• Urge to cough or gag — especially when the scope first passes the back of the throat. The throat anesthesia reduces this but does not eliminate it completely. A sedative may be given to help you stay comfortable.
• Mild pressure in the chest as the scope moves through the airways.
• Numbness and odd sensation in the throat for about 1-2 hours after.

The procedure is generally well tolerated, but the first minute or so is the hardest part for most patients. After that it gets much easier.

After the procedure: what to do

Recovery instructions are simple but important:

1. Rest sitting upright for about 2 hours while the anesthesia wears off. This reduces the risk of choking if your throat is still numb.
2. Do not eat or drink until your throat is no longer numb. Your cough and swallowing reflexes need to return first.
3. After about 2 hours, try sipping water. If it goes down smoothly without choking or going "down the wrong pipe," you can gradually resume eating.
4. Do not drive or do anything requiring focus for the rest of the day. Residual anesthesia and sedation can impair your judgment.

Are there risks?

Like any internal procedure, bronchoscopy has some potential risks, although complications are uncommon. The main ones to watch for after the procedure include:

• Persistent cough or breathing difficulty — most cough is mild and brief, but anything severe or lasting should be reported immediately
• Bleeding — minor bleeding is common after biopsy, but significant bleeding is uncommon and should prompt immediate medical attention
• Pneumothorax (collapsed lung) — a rare but serious complication that can happen if lung tissue was biopsied. Symptoms include sudden chest pain or worsening shortness of breath.

If you experience any of the following after your bronchoscopy, contact the clinic or go to the emergency department immediately:

• Coughing up significant amounts of blood
• Severe shortness of breath
• Sudden chest pain that did not exist before
• High fever

Why do this with an English-speaking doctor?

Bronchoscopy is an internal procedure where you need to understand the instructions, communicate during the exam, and follow the after-care advice precisely. Doing this in a language you speak fluently makes a big difference for both comfort and safety. Dr. Kim Joo-in at Kim Joo-in Internal Medicine Clinic speaks professional English, trained in respiratory medicine at Busan Paik Hospital for 14 years, and will walk you through the procedure, findings, and next steps in English.

About Kim Joo-in Internal Medicine Clinic

Dr. Kim Joo-in, M.D., Ph.D. is a board-certified internal medicine and pulmonology specialist. Before opening his own practice, he served as a Professor of Internal Medicine at Inje University Busan Paik Hospital for 14 years, specializing in respiratory and allergy medicine. He completed a clinical and research fellowship at Washington University in St. Louis School of Medicine and Barnes-Jewish Hospital in the United States, where he developed professional-level medical English.

Dr. Kim has been recognized as a Best Doctor in Respiratory & Allergy Medicine by Busan Ilbo, and the clinic has received Outstanding Respiratory Disease Hospital recognition for three consecutive years from the National Health Insurance Review.

Clinic information

• Address: 8F Cheongseok Building, 64 Seomyeon-ro, Busanjin-gu, Busan
• Access: 5-minute walk from Seomyeon Station Exit 7 (Busan Metro Line 1 and Line 2)
• Phone: 051-802-7550 / 051-802-7552
• Hours: Weekdays 09:15–18:15 (lunch 12:50–13:50), Saturday 09:15–14:00 (no lunch break)
• Closed Sundays and Korean public holidays
• No appointment necessary — walk in during clinic hours
• English consultations available

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Frequently Asked Questions

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