Optimal Suction Strategy After Pulmonary Resection Using a Digital Drainage System With a Single Blake Drain: A...

Area of Science:

• Thoracic Surgery
• Pulmonary Medicine
• Critical Care Medicine

Background:

• Chest tube management post-pulmonary resection lacks standardization.
• Practices vary in suction levels, drain type, and removal criteria.

Purpose of the Study:

• To compare standard suction (SS) with low suction (LS) for chest tube management after minimally invasive lung resection.
• To evaluate the primary outcome of air leak duration and secondary outcomes including chest tube duration and length of stay.

Main Methods:

• A randomized study compared SS (-20 cmH2O) to LS (-8 cmH2O) in patients undergoing minimally invasive lung resection.
• Chest tubes were removed based on drainage volume (≤450 mL/24 h) and air leak (≤20 mL/min over 6 h).

Main Results:

• No significant differences were observed in air leak duration, chest tube duration, or hospital stay between SS and LS groups.
• The incidence of prolonged air leak was similar (8% SS vs. 11% LS).
• Low suction was associated with more pleural interventions (11% vs. 3%) and a trend towards increased subcutaneous emphysema.

Conclusions:

• A single 24 Fr Blake drain and a 450 cc/24 h drainage threshold are safe and effective for chest tube removal.
• Low suction offers no advantage over standard suction for air leak duration.
• Standard suction may be preferable due to a higher requirement for pleural interventions and a trend for increased subcutaneous emphysema with low suction.