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CompletedNCT07137507Updated Aug 22, 2025

Comparison of Lung Expansion After Uniportal and Multiportal Video Assisted Thoracic Surgery for Stage II Post Pneumonic Bacterial Empyema Thoracis

An interventional study of Uniportal VATS and Multi-portal VATS in Empyema, Pleural and Thoracic Empyema, sponsored by University of Health Sciences Lahore. Completed at 1 site in Pakistan. Open to participants aged 18 Years to 73 Years. Per ClinicalTrials.gov, last updated 2025-08-22.

Sponsored by University of Health Sciences Lahore · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 4 months after the study started (first participant enrolled Apr 2023, registered Aug 2025).
Phase
Not applicable
Study type
Interventional
Enrollment
160
Allocation
Randomized
Ages
18 Years to 73 Years
Sex
All
01

Study summary

It was a parallel-armed randomized control study in which 160 participants admitted to the Thoracic Surgery Department, Services Hospital, Lahore were included. The participants were divided into two equal groups (80 in each group). Uniportal Group participants underwent uniportal video assisted thoracic surgery (VATS), while multiportal Group participants were treated with multiportal video assisted thoracic surgery(VATS). Simple consecutive sampling was carried out. Expansion of lung was evaluated postoperatively at the 1st, 3rd, 7th and 15th postoperative day by chest radiograph after uniportal and multiportal VATS.

Read the detailed description

Empyema is a problem that thoracic surgeons deal in everyday practice. The main goal of treatment is evacuating the pus and fibrin deposits in the thoracic cavity for complete lung expansion. Traditionally, the surgical approach was open thoracotomy; then the multiportal video assisted thoracic surgery (VATS) approach became more common. Recently, more surgeons are adopting the uniportal VATS approach, which has become a powerful surgical tool, for the treatment of stage II empyema.

Uniportal and multiportal VATS are a feasible technique in all patients with pleural empyema requiring surgery. In this study, the investigators observed comparable postoperative success rates, no need for conversion, and successful completion of decortication via both multiportal and uniportal approaches. This transition to a single-incision technique was associated with fewer chest tubes, minimal surgical trauma, and no compromise in clinical outcomes.

02

Conditions studied

  • Empyema, Pleural
  • Thoracic Empyema

Keywords

  • empyema thoracis
  • uniportal VATS
  • Multiportal VATS
  • Decortication
  • thoracotomy
03

In context

Empyema, Pleural

33 studies on the registry are indexed under Empyema, Pleural; 11 are open to participants now.

This study's enrollment of 160 is above the median of 77 across 26 interventional studies indexed under Empyema, Pleural.

Browse Empyema, Pleural studies →

Lead sponsor

University of Health Sciences Lahore is the lead sponsor of 83 studies on the registry; 52 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 73 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients with stage II empyema
  • More than 18 years old patients deemed fit for intervention.
  • Both genders
  • Unintubated patients

Exclusion criteria

Exclusion Criteria:

  • Patients with stages I and III empyema
  • Patient with TB empyema
  • Patient with Fungal empyema
  • Patients unfit for general anesthesia.
  • Unwilling to participate
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Investigator)
Enrollment
160 participants (actual)

Study arms

  • Experimental
    Uniportal Group

    Uniportal Video Assisted Thoracic Surgery group

    Procedure: Uniportal VATS

  • Experimental
    Multiportal Group

    Multi-portal Video Assisted Thoracic Surgery group

    Procedure: Multi-portal VATS

Interventions

  • ProcedureUniportal VATS

    Decortication of pleural empyema is done using single-port VATS

  • ProcedureMulti-portal VATS

    Decortication of pleural empyema is done using two or more ports with VATS

06

What researchers measure

Primary outcomes

  1. complete lung expansion after decortication

    Complete expansion of lung after Uniportal or Multiportal VATS was defined as, no residual pneumothorax or fluid collection on the chest radiograph, post - operatively. Lung expansion after surgery will be measured in percentages by calculating percentage of residual pneumothorax or fluid collection and was assessed using chest X-ray. Chest x-rays were performed on post-operative day 1, 3, 7 and 15. Physiologically normal and completely expanded lung is the set parameter for checking and comparing the expansion of operated lung after decortication.

    Time frame: 15 days

Secondary outcomes

  1. post-operative thoracotomy site pain

    Recording of post-operative thoracotomy pain at the site of uniportal or multiportal VATS was also assessed on post-operative day 1, 3 and 7. The Visual Analogue Scale (VAS) is a simple, widely used tool for measuring pain intensity. It consists of a straight line, usually 10 cm in length, with two endpoints: "0" = no pain "10" (or 100) = worst imaginable pain The patient marks a point on the line that best represents their perceived pain level. The score is then measured in millimeters or centimeters from the "no pain" end, giving a numerical value for pain intensity.

    Time frame: 07 days

07

Study locations

1 site
  • Services Institute Of Medical Sciences, Services Hospital
    Lahore, Punjab Province, Pakistan
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Apr 2023 to primary completion in Mar 2025, 23 months.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 12, 2025
First posted
Aug 22, 2025
StartActual
Apr 1, 2023
Primary completionActual
Mar 31, 2025
CompletionActual
May 31, 2025
Last update
Aug 22, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 22, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07137507
Lead sponsor
University of Health Sciences Lahore
Responsible party
Zeeshan Sarwar (Principal Investigator, University of Health Sciences Lahore) — Principal investigator
First posted
Aug 22, 2025
Start date
Apr 1, 2023
Primary completion
Mar 31, 2025
Completion
May 31, 2025
Last update
Aug 22, 2025

Study contacts

Muhammad Shoaib Nabi
study chair · SIMS, Services Hospital, Lahore

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2025. You cannot join it, but the record below documents what was studied.

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