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RecruitingNCT06911736POTHeRUpdated Apr 22, 2025

Effect of the Postoperative Trendelenburg Position on Chronic Subdural Hematoma Recurrence

An interventional study of Trendelenburg position in Chronic Subdural Hematoma, Trendelenburg and Recurrence, sponsored by Universidad de Antioquia. Recruiting at 3 sites in Colombia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-04-22.

Sponsored by Universidad de Antioquia · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 9 months after the study started (first participant enrolled Jun 2024, registered Mar 2025).
  • Started Jun 2024; still recruiting 2 years 5 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
254
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Objective: Determine the effect of the postoperative trendelenburg position on the recurrence of chronic subdural hematoma (CSH) in patients undergoing surgery.

Materials and Methods: An open-label, randomized, controlled clinical trial was conducted in three hospitals in Medellín. Patients with CSH were enrolled and assigned to the trendelenburg position (30° leg elevation and 10° head tilt) or a flat bed for 24 hours postoperatively. CSH recurrence was measured at 3 months, along with functional outcome (modified Rankin scale), adverse events, and comfort (Likert scale).

Read the detailed description

Objective: Determine the effect of the postoperative trendelenburg position on the recurrence of chronic subdural hematoma (CSH) in patients undergoing surgery.

Materials and Methods: An open-label, randomized, controlled clinical trial was conducted in three hospitals in Medellín. Patients with CSH were enrolled and assigned to the trendelenburg position (30° leg elevation and 10° head tilt) or a flat bed for 24 hours postoperatively. CSH recurrence was measured at 3 months, along with functional outcome (modified Rankin scale), adverse events, and comfort (Likert scale).

02

Conditions studied

  • Chronic Subdural Hematoma
  • Trendelenburg
  • Recurrence
  • Mortality
  • Prognosis
  • Clinical Trials
03

In context

Hematoma, Subdural, Chronic

112 studies on the registry are indexed under Hematoma, Subdural, Chronic; 49 are open to participants now.

This study's planned enrollment of 254 is above the median of 185 across 86 interventional studies indexed under Hematoma, Subdural, Chronic.

Browse Hematoma, Subdural, Chronic studies →

Lead sponsor

Universidad de Antioquia is the lead sponsor of 80 studies on the registry; 9 are open to participants now.

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

  • The study included patients aged 18 years or older who required surgical management of symptomatic CSH confirmed by CT scan and whose was given by the patient or responsible family member to participate in the study

Exclusion criteria

Exclusion Criteria:

  • Pregnant or breastfeeding
  • Conditions in which the trendelenburg position might not be safe, such as intracranial hypertension without a drain to allow evacuation of the hematoma, cardiovascular instability (severe heart failure, unstable angina, cardiogenic pulmonary edema), acute respiratory distress syndrome without a secure airway, glaucoma, spinal cord trauma not stabilized with surgery, peripheral vascular disease,
  • History of ipsilateral chronic subdural hematoma drainage, intracranial hypotension syndrome, ventriculoperitoneal shunting
  • Simultaneous participation in any other clinical trial.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

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05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
254 participants (estimated)

Study arms

  • No intervention
    Control

    Control group received the usual postoperative care for patients with CSH, which consisted of strict neurological monitoring for at least 24 hours in an inpatient ward or a more complex setting depending on the patient's clinical condition. The head of the patient was positioned neutral (0°), as were the lower limbs, according to institutional care guidelines. The drain (a latex-gloved reservoir or Hemovac drain) was positioned inferior to the head to promote drainage of any subdural debris. Negative pressure was not used except in patients with Hemovac and a subgaleal drain. Typically, after 24 hours of clinical monitoring and symptom improvement, the drain was removed, and the patient was sent home with recommendations and warning signs, if the patient's clinical condition permitted. Postoperative follow-up imaging was not routinely performed as there was no evidence of clinical benefit.

  • Experimental
    Trendelenburg

    In addition to the management described above, the postoperative position was modified in the intervention group (trendelenburg). After admission to the hospital unit (general ward, special care, or intensive care unit), the patient's position was adjusted with a 30° leg elevation and a 10° downward head tilt. Proper positioning was verified with a goniometer. This position was maintained until the drains were removed, and the patient was then positioned according to usual care. If the patient decided to get out of bed, the nurse occluded the drains and reopened them when the patient returned to the position described for each group.

    Other: Trendelenburg position

Interventions

  • OtherTrendelenburg position

    In addition to the management described above, the postoperative position was modified in the intervention group (trendelenburg). After admission to the hospital unit (general ward, special care, or intensive care unit), the patient's position was adjusted with a 30° leg elevation and a 10° downward head tilt. Proper positioning was verified with a goniometer. This position was maintained until the drains were removed, and the patient was then positioned according to usual care. If the patient decided to get out of bed, the nurse occluded the drains and reopened them when the patient returned to the position described for each group.

06

What researchers measure

Primary outcomes

  1. Recurrence

    Proportion of patients who experienced recurrence of chronic subdural hematoma at 3 months of follow-up and required repeat surgery

    Time frame: 3 months

Secondary outcomes

  1. proportion of patients with favorable functional outcome at 3 months, as measured by the modified Rankin Scale.

    Secondary outcomes were the proportion of patients with favorable functional outcome at three months, as measured by the modified Rankin Scale (mRS). The validated scale has seven categories: no symptoms (0), no clinically significant disability despite symptoms (1), mild disability (2), moderate disability (3), moderately severe disability (4), severe disability (5), and death (6); in this trial, a score of 0 to 2 was considered a favorable outcome, as it is associated with functional independence.

    Time frame: 3 months

07

Study locations

3 of 3 sites recruiting
  • Clinica CES
    Medellin, Antioquia 050001, Colombia
    Recruiting
  • Hospital San Vicente Fundación
    Medellin, Antioquia 050001, Colombia
    Recruiting
  • Instituto Neurologico de Colombia
    Medellin, Antioquia 050001, Colombia
    Recruiting
08

References and documents

Publications

  • Hamou H, Alzaiyani M, Pjontek R, Kremer B, Albanna W, Ridwan H, Clusmann H, Hoellig A, Veldeman M. Risk factors of recurrence in chronic subdural hematoma and a proposed extended classification of internal architecture as a predictor of recurrence. Neurosurg Rev. 2022 Aug;45(4):2777-2786. doi: 10.1007/s10143-022-01790-8. Epub 2022 Apr 23. PubMed 35461433 ↗

Individual participant data

Plan to share: Undecided — It's not clear to me

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 22, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06911736
Lead sponsor
Universidad de Antioquia
Responsible party
Ignacio Alberto Gonzalez Borrero (Neurosurgeon, Universidad de Antioquia) — Principal investigator
First posted
Apr 4, 2025
Start date
Jun 1, 2024
Primary completion
Feb 28, 2025
Completion
Apr 30, 2027 (estimated)
Last update
Apr 22, 2025

Study contacts

Jorge H Montenegro, Neurosurgery resident
Contact
montenegromjh@gmail.com
+573117727801

Oversight

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

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