Spontaneous Pneumothorax · Observe/Drain vs Surgery

Step-by-step decision

Choose step by step as prompted; reaching an endpoint gives the management recommendation. You can go back a step or restart anytime.

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Full pathway

1. [Decision] Stability + size/symptoms + recurrence/high-risk
   Stable? Size/symptoms? Recurrence or high-risk features?
   • Tension pneumothorax/hemodynamically unstable/bilateral → Tension/unstable → decompression + drain
   • Stable, small (<2 cm rim / <3 cm apex), mild symptoms → Stable small → observe ± oxygen
   • Stable, large or significantly symptomatic (first episode) → Large/symptomatic → aspiration or drain
   • Recurrence (second ipsilateral/first contralateral)/persistent leak >3–5 d/hemopneumothorax/high-risk occupation (pilot-diver)/blebs on CT → Recurrence/high-risk → VATS + pleurodesis
2. [End] Tension/unstable → decompression + drain
   Tension → immediate needle decompression + chest drain; unstable/bilateral → chest drain + admit and resuscitate.
3. [End] Stable small → observe ± oxygen
   Stable small pneumothorax, mild symptoms → observe ± high-concentration oxygen (speeds resorption), outpatient repeat chest X-ray; conservative management of some large pneumothoraces is also non-inferior (selected).
4. [End] Large/symptomatic → aspiration or drain
   Stable, large or significantly symptomatic (first episode) → needle aspiration or small-bore chest drain; failure → drain/surgical assessment.
5. [End] Recurrence/high-risk → VATS + pleurodesis
   Recurrence/persistent leak/hemopneumothorax/high-risk occupation/blebs on CT → VATS bullectomy + pleurodesis (mechanical abrasion/chemical), markedly lowers recurrence (~1–2%).

Source guidelines & references

• Spontaneous pneumothorax management (BTS 2023; ACCP)

This pathway is our own synthesis of the decision logic in the guidelines above (not the guideline verbatim); thresholds and workflows change as guidelines update — in practice follow the latest guideline, your institution's protocol and the individual patient.

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