The Impacts of Intermittent Chest Tube Clamping on Chest Tube Drainage Duration and Postoperative Hospital Stay After Lung Cancer Surgery

Study Overview
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Brief Summary
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All patients undergo lateral thoracotomy or video-assisted thoracoscopic surgery (VATS) and are operated on by the same thoracic surgical team. All patients are managed with gravity drainage (water seal only, without suction) on the day of operation. Eligible patients are randomized to control group or clamping group at a 1:1 ratio before 3pm on the postoperative day. Patients in control group and those in clamping group are managed with different protocols after 3pm on the postoperative day.

Detailed Description
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All patients undergo lateral thoracotomy or video-assisted thoracoscopic surgery (VATS) and are operated on by the same thoracic surgical team. At the end of operation, the lung parenchyma is submerged in sterile saline to test for air leakage, and a single 24-Fr chest tube is placed in each patient. All patients are managed with gravity drainage (water seal only, without suction) on the day of operation. Once a radiograph is confirmed re-expansion of the lung on the morning of the first postoperative day and no air leak is detected, the patient is a candidate for inclusion in the trial. Eligible patients are randomized to control group or clamping group before 3pm on the postoperative day. Patients in control group are managed with gravity drainage unchangeably, while patients in clamping group are managed with clamping protocol after 3pm on the postoperative day as follow: the chest tube will be clamped, and the nurses will check the patient every 6 h. If the patient has no problems with compliance, the clamp will be removed for half an hour in the morning to record the drainage volume every 24 h. If patients develops intolerable abnormal symptoms, such as dyspnea, pneumothorax, and severe subcutaneous emphysema after chest tube clamping, the clamp will be removed for 30 min and be reapplied after the symptoms have been resolved. Such patients will be placed under more rigorous surveillance after re-clamping, which requires the medical staff to check on the patients every 2-4 hours in order to promptly detect abnormal symptoms. If abnormal symptoms occur frequently, this clamping protocol will be continued until another radiograph excluded the presence of pneumothorax. The daily output of pleural fluid was recorded. The criteria for chest tube removal were as follows: (a) drainage volume≤250 mL in 24 h, (b) absence of air leakage and intrathoracic hemorrhage, and (c) absence of signs of purulent pleural effusion and atelectasis.

Official Title
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The Impacts of Intermittent Chest Tube Clamping on Chest Tube Drainage Duration and Postoperative Hospital Stay After Lung Cancer Surgery: A Prospective Study

Conditions
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Management of Lung Cancer Patients

Intervention / Treatment
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* Procedure: clamping group


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Pathological diagnosis of lung cancer Treated with lobectomy and systematic mediastinal lymph node dissection/ systematic sampling Managed with gravity drainage (water seal only, without suction) Re-expansion of the lung confirmed on the morning of the first postoperative day Exclusion Criteria: Thoracic cavity infection Prolonged air leakage Reoperation due to chylothorax Atelectasis Liver cirrhosis Renal insufficiency Wound infection

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: clamping group<br>Clamping group are managed with clamping protocol after 3pm on the postoperative day as follow: the chest tube will be clamped, and the nurses will check the patient every 6 h. If the patient has no problems with compliance, the clamp will be removed for half an hour in the morning to record the drainage volume every 24 h. | Procedure: clamping group<br>* Clamping group are managed with clamping protocol after 3pm on the postoperative day as follow: the chest tube will be clamped, and the nurses will check the patient every 6 h. If the patient has no problems with compliance, the clamp will be removed for half an hour in the morning to record the drainage volume every 24 h.<br>|
| No Intervention: control group<br>Patients in control group are managed with gravity drainage (water seal only, without suction) all the time after operation. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| chest tube drainage duration | time from operation day to the day of chest tube removal | From date of operation until the date of chest tube removal, assessed up to 10 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| postoperative hospital stay | time from opertion day to the day of hospital discharge | From date of operation until the date of hospital discharge, assessed up to 2 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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lung cancer, surgery, chest tube clamping, duration of chest tube drainage, postoperative stay