Chest Drain Insertion

Question 1

What anatomical area is recommended for chest drain insertion?

Answer 1

The safe triangle in the mid-axillary line of the 5th intercostal space.

Question 2

What are the borders of the safe triangle for chest drain insertion?

Answer 2

Anterior border of latissimus dorsi, lateral border of pectoralis major, a line superior to the nipple level, and apex below the axilla.

Question 3

What is the triangle of auscultation and why is it relevant?

Answer 3

A scapular-based triangle bordered by trapezius, latissimus dorsi, and vertebral border of scapula; folding arms forward exposes 6th–7th ribs for auscultation.

Question 4

What is a chest drain?

Answer 4

A tube inserted into the pleural cavity creating a one-way valve allowing air or fluid to exit.

Question 5

What are the main indications for chest drain insertion?

Answer 5

Pleural effusion, pneumothorax not suitable for conservative/aspiration management, empyema, haemothorax, haemopneumothorax, chylothorax, and some penetrating chest injuries in ventilated patients.

Question 6

What are the relative contraindications to chest drain insertion?

Answer 6

INR >1.3, platelet count <75, pulmonary bullae, pleural adhesions.

Question 7

How should a patient be positioned for chest drain insertion?

Answer 7

Supine or 45°, with arm placed behind the head to expose the axilla.

Question 8

What is the recommended intercostal space and line for chest drain insertion?

Answer 8

5th intercostal space, mid-axillary line.

Question 9

What technique is most commonly used to insert a chest drain?

Answer 9

Seldinger technique.

Question 10

What does BTS guidance recommend regarding ultrasound use for chest drains?

Answer 10

Strongly recommends ultrasound guidance for all cases involving pleural fluid.

Question 11

What local anaesthetic dose limit applies when inserting a chest drain?

Answer 11

Lidocaine up to 3 mg/kg.

Question 12

How can correct chest drain position be confirmed?

Answer 12

Aspiration of pleural fluid, swinging of drainage tubing, or chest X-ray.

Question 13

What complication may indicate malposition of a chest drain?

Answer 13

Failure of insertion due to tube abutting apical pleura, subcutaneous placement, or entering the abdomen.

Question 14

What are common complications of chest drain insertion?

Answer 14

Bleeding, infection, lung penetration, failure of insertion, and re-expansion pulmonary oedema.

Question 15

What symptoms may precede re-expansion pulmonary oedema?

Answer 15

Sudden cough and/or shortness of breath.

Question 16

How is suspected re-expansion pulmonary oedema managed?

Answer 16

Clamp the drain and obtain an urgent chest X-ray.

Question 17

What drainage rate increases the risk of re-expansion pulmonary oedema?

Answer 17

Rapid drainage >1 litre within a short period (e.g., <6 hours).

Question 18

When should a chest drain for pleural effusion be removed?

Answer 18

When no drainage has occurred for >24 hours and imaging shows resolution.

Question 19

When should a chest drain for pneumothorax be removed?

Answer 19

When bubbling stops spontaneously or on coughing, ideally with radiological resolution.

Question 20

Who should advise on chest drain removal in penetrating chest injuries?

Answer 20

The specialist managing the trauma case.