Spontaneous Pneumothorax Suspected
Acute onset chest pain, dyspnea; CXR confirms pneumothorax
All Pathways
Pulmonary MedicineEmergency
Spontaneous Pneumothorax Management (BTS 2023)
Spontaneous Pneumothorax Management (BTS 2023): Spontaneous Pneumothorax Suspected → Tension Pneumothorax? → ⚠️ Immediate Decompression → Chest Drain In...
Pathway Overview
15 steps
Algorithm Steps
15 total
01Start 02Decision Tension Pneumothorax?
Clinical emergency - treat before imaging
- Severe respiratory distress
- Tracheal deviation
- Hypotension, tachycardia
- Absent breath sounds
- Distended neck veins
03Warning ⚠️ Immediate Decompression
Do not wait for CXR
- Needle decompression: 2nd ICS MCL or 4th/5th ICS MAL
- Large bore cannula (14G)
- Follow with chest drain insertion
- High-flow oxygen
04Action Chest Drain Insertion
For SSP or failed aspiration
- Small bore (10-14Fr) preferred
- Safe triangle: 4th-5th ICS, anterior to MAL
- Ultrasound guidance recommended
- Connect to underwater seal
- Consider suction if persistent air leak
05Decision Resolution at 48h?
Assess for lung expansion and air leak
- Resolved: No air leak, lung expanded
- Persistent: Ongoing bubbling, incomplete expansion
06Action Remove Drain & Discharge
Air leak resolved, lung expanded
- Clamp for 4h, repeat CXR
- If stable, remove drain
- Discharge with safety-net
- Follow-up in 2-4 weeks
- Discuss recurrence risk
07Outcome Surgical Referral (VATS)
For persistent or recurrent pneumothorax
- Persistent air leak >5-7 days
- Second ipsilateral pneumothorax
- First contralateral pneumothorax
- Bilateral pneumothorax
- High-risk occupations (pilots, divers)
08Decision Primary or Secondary?
Classify pneumothorax type
- Primary (PSP): No underlying lung disease, typically age <50, minimal smoking
- Secondary (SSP): Known lung disease (COPD, ILD, CF) OR age >50 with significant smoking history
09Decision Symptom Severity?
2023 BTS: Symptoms guide management, not just size
- Significant symptoms: Breathlessness, pain, hypoxia
- Minimal symptoms: Comfortable at rest, SpO2 normal
- High-risk features: Bilateral, hemopneumothorax, tension
10Action Conservative Management (PSP)
For asymptomatic/minimally symptomatic PSP
- Discharge with safety-net advice
- Avoid air travel until resolved
- Return if worsening symptoms
- Repeat CXR in 2-4 weeks
- Advise smoking cessation
11Outcome Discharge (Conservative)
With follow-up plan
- Written safety-net advice
- Return if worsening symptoms
- CXR in 2-4 weeks
- Smoking cessation advice
- Avoid flying until resolved
12Action Ambulatory Management
Small-bore drain with one-way valve
- Small-bore chest drain (8-14Fr)
- Ambulatory device (Heimlich valve/flutter valve)
- Outpatient management if stable
- Daily review until resolved
- Avoid suction initially
- Path rejoins step 05Shared downstream outcome
13Action Active Intervention Required
For symptomatic patients or SSP
- Options: Needle aspiration OR chest drain
- Needle aspiration: 16-18G, 2nd ICS MCL
- Aspirate up to 2.5L, stop if resistance
- If fails: Chest drain insertion
14Action Needle Aspiration
First-line for PSP with significant symptoms
- 16-18G cannula, 2nd ICS MCL
- Aspirate with 50mL syringe via 3-way tap
- Stop if: >2.5L aspirated or resistance felt
- Repeat CXR post-procedure
15Decision Aspiration Successful?
Lung re-expanded, symptoms improved
- Success: <2cm rim on CXR, symptoms resolved
- Failure: Persistent >2cm or ongoing air leak
- Path rejoins step 11Shared downstream outcome
- Path rejoins step 04Shared downstream outcome
- Path rejoins step 04Shared downstream outcome
Guideline Source
British Thoracic Society Guideline for Pleural Disease 2023
Clinical Safety Information
Clinical Decision Support — Not a Substitute for Clinical Judgment
Individual patient factors may require deviation from these recommendations.
Known Limitations
- Does not cover traumatic pneumothorax
- Does not address catamenial pneumothorax specifically
- Ambulatory device availability varies by institution
- Surgical intervention criteria may vary locally
Applicable Regions
UKEUGlobal
UK: BTS guideline; ambulatory devices increasingly available
Global: Principles applicable globally; device availability varies
Version 1Next review: 2027-01-01
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Frequently Asked Questions
What is the Spontaneous Pneumothorax Management (BTS 2023)?
The Spontaneous Pneumothorax Management (BTS 2023) is a emergency clinical algorithm for Pulmonary Medicine. It provides a structured decision tree to guide clinical decision-making, based on British Thoracic Society Guideline for Pleural Disease 2023.
What guideline is the Spontaneous Pneumothorax Management (BTS 2023) based on?
This algorithm is based on British Thoracic Society Guideline for Pleural Disease 2023 (DOI: 10.1136/thorax-2023-220304).
What are the limitations of the Spontaneous Pneumothorax Management (BTS 2023)?
Known limitations include: Does not cover traumatic pneumothorax; Does not address catamenial pneumothorax specifically; Ambulatory device availability varies by institution; Surgical intervention criteria may vary locally. Individual patient factors may require deviation from these recommendations.
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