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CompletedNCT05131945Updated Sep 19, 2024

GRAvity- Versus Wall Suction-drIven Large Volume Thoracentesis: a RAndomized Controlled Study (GRAWITAS Study)

An interventional study of Standard Suction Thoracentesis and Gravity Thoracentesis in Thoracentesis, Pleural Effusions, Chronic and Pulmonary Edema, sponsored by M.D. Anderson Cancer Center. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-09-19.

Sponsored by M.D. Anderson Cancer Center · Not applicable, Interventional, and Other

From the registry’s dates

  • Registered 2 years 10 months after the study started (first participant enrolled Dec 2018, registered Oct 2021).
Phase
Not applicable
Study type
Interventional
Enrollment
79
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The primary objective of this study is to compare gravity-driven versus wall suction-driven large volume therapeutic thoracentesis on the development of chest discomfort during the procedure.

This study is a multicenter, single-blinded, randomized controlled trial designed to compare chest discomfort between gravity-driven and wall suction-driven therapeutic thoracentesis. Patients will be stratified by study centers, and randomly assigned to intervention and control arms; and will remain blinding to their group assignment during the procedure.

Read the detailed description

Aims and Objectives:

The primary objective of this study is to compare gravity-driven versus wall suction-driven large volume therapeutic thoracentesis on the development of chest discomfort during the procedure.

Expected Outcomes:

We anticipate that gravity driven therapeutic thoracentesis will result in improved clinical outcomes compared to wall suction driven thoracentesis, defined by less chest discomfort throughout the procedure as measured at 5 minutes post-procedure (primary endpoint).

Primary endpoint:

The Global Pain Score will be determined at 5 minutes post-procedure using a VAS 0-100 and represents the pain experienced by the patient during the entire procedure from the beginning to the 5-minute post-procedure assessment ("On average, how much discomfort have you felt during the procedure?"). The primary endpoint is defined as the overall procedural chest pain scored 5 minutes following the procedure.

This study is a randomized controlled trial designed to compare the changes of chest pain scores between gravity-driven therapeutic thoracentesis and wall suction-driven thoracentesis. The estimated minimal clinically important difference of the change is 10.

Secondary endpoints:

  1. Duration of procedure timed from the beginning of fluid drainage to catheter removal.
  2. Differences in narcotics used after the procedure.
  3. Incidence of pneumothorax detected on the post procedural CXR
  4. Incidence of clinically apparent re-expansion pulmonary edema
  5. Incidence of radiographically apparent re-expansion pulmonary edema detected on the post procedural CXR
02

Conditions studied

  • Thoracentesis
  • Pleural Effusions, Chronic
  • Pulmonary Edema
03

In context

Pleural Effusion

335 studies on the registry are indexed under Pleural Effusion; 63 are open to participants now.

This study's enrollment of 79 is above the median of 62 across 220 interventional studies indexed under Pleural Effusion.

Browse Pleural Effusion studies →

Lead sponsor

M.D. Anderson Cancer Center is the lead sponsor of 3,044 studies on the registry; 578 are open to participants now.

Of its 608 completed or terminated interventional studies of FDA-regulated products, 407 (67%) have results posted.

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

04

Who can participate

Ages eligible
18 Years and older
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

  1. Referral to pulmonary services for large-volume thoracentesis
  2. Presence of a symptomatic moderate or large free-flowing (non-septated) pleural effusion on the basis of:

    1. Chest radiograph: effusion filling ≥ 1/3 the hemithorax, OR
    2. CT-scan: maximum AP depth of the effusion ≥ 1/3 of the AP dimension on the axial image superior to the hemidiaphragm, including atelectatic lung completely surrounded by effusion, OR Ultrasound: effusion spanning at least three interspaces, with depth of 3 cm or greater in at least one intercostal space, while the patient sits upright.
  3. Age >/= 18

Exclusion criteria

Exclusion criteria:

  1. Inability to provide informed consent
  2. Study subject has any disease or condition that interferes with safe completion of the study including:

    1. Coagulopathy, with criteria left at the discretion of the operator
    2. Hemodynamic instability with systolic blood pressure \<90 mmHg or heart rate > 120 beats/min, unless deemed to be stable with these values by the attending physicians
  3. Pleural effusion is smaller than expected on bedside pre-procedure ultrasound
  4. Referral is for diagnostic thoracentesis only
  5. Presence of more than minimal septations and/or loculations( more than 3) on bedside pre-procedure ultrasound
  6. Inability to sit for the procedure
  7. Pregnancy
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Single group
Masking
Single (Participant)
Enrollment
79 participants (actual)

Study arms

  • Experimental
    Group 1: Standard Suction Thoracentesis

    treatment techniques suction is a standard of care and used for draining fluid around the lung.

    Other: Standard Suction Thoracentesis · Other: Gravity Thoracentesis

  • Experimental
    Group 2: Gravity Thoracentesis.

    treatment techniques (gravity ) is a standard of care and used for draining fluid around the lung.

    Other: Standard Suction Thoracentesis · Other: Gravity Thoracentesis

Interventions

  • OtherStandard Suction Thoracentesis

    a procedure that removes excess fluid from the space in between your lungs and chest wall

  • OtherGravity Thoracentesis

    a procedure that removes excess fluid from the space in between your lungs and chest wall

06

What researchers measure

Primary outcomes

  1. The overall procedural chest pain questionnaire

    The Global Pain Score will be determined at 5 minutes post-procedure using a VAS 0-100 and represents the pain experienced by the patient during the entire procedure from the beginning to the 5-minute post-procedure assessment

    Time frame: through study completion, an average of 1 year

07

Study locations

1 site
  • M D Anderson Cancer Center
    Houston, Texas 77051, United States
08

References and documents

Publications

  • Shojaee S, Pannu J, Yarmus L, Fantin A, MacRosty C, Bassett R Jr, Debiane L, DePew ZS, Faiz SA, Jimenez CA, Avasarala SK, Vakil E, DeMaio A, Bashoura L, Keshava K, Ferguson T, Adachi R, Eapen GA, Ost DE, Bashour S, Khan A, Shannon V, Sheshadri A, Casal RF, Evans SE, Pew K, Castaldo N, Balachandran DD, Patruno V, Lentz R, Pai C, Maldonado F, Roller L, Ma J, Zaveri J, Los J, Vaquero L, Ordonez E, Yermakhanova G, Akulian J, Burks C, Almario RR, Sauve M, Pettee J, Noor LZ, Arain MH, Grosu HB. Gravity- vs Wall Suction-Driven Large-Volume Thoracentesis: A Randomized Controlled Study. Chest. 2024 Dec;166(6):1573-1582. doi: 10.1016/j.chest.2024.05.046. Epub 2024 Jul 18. PubMed 39029784 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Dec 2018 to primary completion in Sep 2024, 69 months.

Of 71 non-industry interventional studies with no phase under Pleural Effusion, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 18 and three quarters within 55. This study's 69 months is above that.

Counting every sponsor, half of 73 studies reached it within 30 months; a quarter within 18 and three quarters within 55.

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

Registered
Oct 27, 2021
First posted
Nov 23, 2021
StartActual
Dec 10, 2018
Primary completionActual
Sep 10, 2024
CompletionActual
Sep 10, 2024
Last update
Sep 19, 2024
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 Sep 19, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05131945
Responsible party
Sponsor
First posted
Nov 23, 2021
Start date
Dec 10, 2018
Primary completion
Sep 10, 2024
Completion
Sep 10, 2024
Last update
Sep 19, 2024

Study contacts

Horianna Grosu, MD
principal investigator · M.D. Anderson Cancer Center

Oversight

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

Not currently enrolling

This study is completed, as verified in Sep 2024. You cannot join it, but the record below documents what was studied.

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