The aim of the study is to evaluate postoperative pain in patients receiving a small-bore (16F) chest drain compared to those receiving the standard large-bore (24F) chest drain after minimally invasive pulmonary lobectomy and/or segmentectomy.
Lung cancer remains the leading cause of cancer-related death worldwide, and surgical resection remains the treatment of choice for patients with resectable non-small cell lung cancer (NSCLC), particularly in early stages of the disease. Anatomical lung resections such as lobectomy and segmentectomy are commonly performed, increasingly through minimally invasive techniques like video-assisted thoracoscopic surgery (VATS) and robotic-assisted thoracoscopic surgery (RATS). Compared to traditional thoracotomy, VATS and RATS has been associated with better postoperative outcomes, including less pain, shorter hospital stays, faster recovery, and improved quality of life. After lung resections, the standard postoperative management involves the insertion of a chest drain to remove air and fluid from the pleural space and monitor for complications such as air leaks or bleeding. Traditionally, most thoracic surgery centres use a single large-bore chest tube, typically 24F in size, which remains in place at least until the first postoperative day. However, this practice is not based on strong evidence, and there is currently no consensus on the optimal size of the chest drain. In fact, removal of the chest tube has been shown to significantly improve ventilatory function and reduce pain, particularly in the early postoperative period. The Chest Drain 16F vs 24F Study investigates whether the use of a smaller-bore chest drain (16F) leads to less postoperative pain compared to the standard large-bore 24F drain in patients undergoing minimally invasive pulmonary lobectomy and/or segmentectomy. In addition to comparing the tube sizes, the trial explores the safety and feasibility of early chest drain removal, defined as removal within 2 to 6 hours after surgery, provided that specific clinical criteria are met (e.g., minimal air leak and no signs of complications). While retrospective data and small prospective studies suggest that early removal and the use of smaller tubes may be beneficial, high-quality prospective data are lacking. This study aims to provide evidence to potentially change clinical practice by reducing patient discomfort without compromising safety.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
124
Insertion of 16F chest tube
Insertion of 24F chest tube
Removal 2-6h after end of skin closure
University Hospital Basel
Basel, Switzerland
RECRUITINGPostoperative chest pain
Postoperative pain related to the placed chest drain (16F versus 24F), measured on a visual analogue scale (VAS) while coughing at different time points from skin closure until standard chest drain removal. The VAS is a horizontal line (100 mm) labelled from "no pain" on the left (0 mm) to "most extreme pain experienced" on the right (100 mm). Chest pain intensity is measured and recorded at rest and while coughing. For the current pain rating, the patient must be shown their last rating for comparison. The patient marks their information with a vertical line on the horizontal score line of the sheet paper. The evaluation is carried out by measuring the distance from the low anchor point to the marking; the recorded values are expressed in millimetres (0-100).
Time frame: 2, 4 and 6 hours after last suture; twice daily from day 1 to day 3 postoperative or until tube removal; on discharge home, on follow up day 30 and 90
Postoperative acute pain relief while coughing
Postoperative acute pain relief while coughing in the other 5 pairwise comparisons. Pain is measured on a visual analogue scale (VAS) while coughing. The VAS is a horizontal line (100 mm) labelled from "no pain" on the left (0 mm) to "most extreme pain experienced" on the right (100 mm).
Time frame: 2, 4 and 6 hours after last suture; twice daily from day 1 to day 3 postoperative or until tube removal; on discharge home, on follow up day 30 and 90
Postoperative acute pain relief at rest
Postoperative acute pain relief at rest measured by an analgesia consumption adjusted pain intensity on a visual analogue scale at different time points in all subgroup comparisons. Pain is measured on a visual analogue scale (VAS) while coughing. The VAS is a horizontal line (100 mm) labelled from "no pain" on the left (0 mm) to "most extreme pain experienced" on the right (100 mm).
Time frame: 2, 4 and 6 hours after last suture; twice daily from day 1 to day 3 postoperative or until tube removal; on discharge home, on follow up day 30 and 90
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Removal 1day postoperative
Analgesia consumption
Intraoperative and postoperative analgesia consumption at different time points.
Time frame: 2, 4 and 6 hours after last suture; twice daily from day 1 to day 3 postoperative or until tube removal; on discharge home, on average up to 10 days postoperative; on 30- and 90 day follow up
Duration of the thoracic drainage
Duration of the thoracic drainage in hours from skin closure until chest tube removal if the air flow is ≤ 20 ml/min.
Time frame: From 2 until 6 hours post-surgery
Fluid output
Duration of fluid output reported per 24h measured in ml/kg/24h with Medela Thopaz+™ until the chest tube is removed
Time frame: 2, 4 and 6 hours after last suture; twice daily from day 1 until discharge home, on average up to 10 days postoperative
Length of hospital stay
Length of hospital stay in nights from the end of the operation to the time when the patient is fit for discharge
Time frame: Patients are discharged from hospital on the 3rd to 7th day, or stay up to the 10th day in case of prolonged air leak or re-operation
Re-hospitalization
Re-hospitalization due to pleural complications.
Time frame: During hospitalization until 90-day follow-up
Postoperative morbidity
Postoperative morbidity related to the medical device and/or procedure. Respiratory, thoracic, mediastinal and cardiac adverse events (AE). Adverse events are recorded and described according to CTCAE 5.0.
Time frame: During hospitalization until 90-day follow-up
Pleural complications
Pleural complications after early removal of chest tubes.The pleural complications will be graded according to Common Terminology Criteria for Adverse Events (CTCAE 5.0).
Time frame: During hospitalization until 90-day follow-up
Mortality
In-hospital mortality; 30-day and 90-day mortality.
Time frame: During hospitalization, 30 and 90 days after hospital discharge
Chronic pain
Chronic pain intensity and pain quality assessment while coughing and at rest on 30/90-day after hospital discharge.
Time frame: 30 and 90 days after hospital discharge
Quality of life assessment
Quality of life measured by Short Form 12 (SF-12) questionnaire. Score ranges from 0 to 100 while higher scores indicate better health-related quality of life
Time frame: Preoperative, at hospital discharge and at 30/90-day follow-up