Is milking and stripping chest tubes really necessary?

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Critical Care Medicine

Background:

• Chest tubes are commonly used post-cardiac surgery to drain fluid and air.
• Routine interventions like milking or stripping are often performed to maintain chest tube patency.
• Evidence supporting the necessity of these interventions is limited.

Purpose of the Study:

• To investigate whether chest tubes not milked or stripped occlude more frequently than those that are.
• To determine if chest tube drainage volume differs based on milking or stripping protocols.
• To evaluate the impact of chest tube management on patient outcomes.

Main Methods:

• A randomized controlled trial involving 49 male subjects post-coronary artery bypass graft (CABG) procedures.
• Three groups were compared: routine milking, routine stripping, and no intervention (control).
• Data on drainage volume, tube patency, heart rate, and arrhythmias were collected and analyzed using ANOVA.

Main Results:

• No significant differences were observed in total drainage volume, hourly zero drainage, heart rate, or arrhythmias among the groups.
• A significantly higher drainage volume was noted in the stripped group between 4-16 hours postoperatively, leading to a discouragement of stripping during this period.
• Chest tubes remained patent in all groups, irrespective of milking or stripping interventions.

Conclusions:

• Neither routine milking nor stripping of chest tubes is necessary for maintaining patency after CABG surgery.
• Chest tube patency is maintained without these interventions, simplifying postoperative care.
• Optimal chest tube positioning to promote continuous drainage is recommended over manual manipulation.