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CompletedNCT04203550FINISHUpdated May 21, 2024

The Finnish Study of Intraoperative Irrigation Versus Drain Alone After Evacuation of Chronic Subdural Hematoma (FINISH)

An interventional study of Intraoperative irrigation and No irrigation in Chronic Subdural Hematoma, sponsored by Helsinki University Central Hospital. Completed at 1 site in Finland. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-05-21.

Sponsored by Helsinki University Central Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
587
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

FINISH-trial is a prospective, randomized, controlled, parallel group non-inferiority trial comparing single burr-hole evacuation of chronic subdural hematoma (CSDH) with intraoperative irrigation (IR) and evacuation of CSDH without irrigation (N-IR).

Read the detailed description

FINISH-trial is a prospective, randomized, controlled, parallel group non-inferiority trial comparing single burr-hole evacuation of chronic subdural hematoma (CSDH) with intraoperative irrigation (IR) and evacuation of CSDH without irrigation (N-IR). In both groups, a passive subdural drain is used for 48 hours as a standard of treatment. The study will be conducted in all five neurosurgical departments in Finland. To determine whether operation without irrigation results in non-inferior outcome to operation with irrigation, we will randomize 426 patients into two groups and follow them up for 6 months using recurrence rates as the primary outcome. Secondary outcomes in our study include mortality, neurological outcome and complications.

02

Conditions studied

  • Chronic Subdural Hematoma

Keywords

  • Chronic Subdural hematoma
  • Surgical evacuation
  • Recurrence
  • Irrigation fluid
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 enrollment of 587 is above the median of 185 across 86 interventional studies indexed under Hematoma, Subdural, Chronic.

Browse Hematoma, Subdural, Chronic studies →

Lead sponsor

Helsinki University Central Hospital is the lead sponsor of 311 studies on the registry; 61 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

  • Patients with a symptomatic unilateral or bilateral CSDH requiring burr-hole evacuation

    o Predominantly hypodense or isodense on imaging (CT/MRI).

  • Clinical symptoms correlating with the CSDH
  • Patients with bilaterally operated CSDHs will be treated with the same protocol on both sides and analyzed as a single study participant

Exclusion criteria

Exclusion Criteria:

  • CSDH requiring surgical treatment other that burr-hole evacuation (e.g. craniotomy)
  • CSDH in a patient who has a cerebrospinal fluid shunt
  • Patients who have undergone any intracranial surgery before
  • Comatose patients (GCS 8 or lower) with absent motor responses to painful stimuli; decerebrate or decorticate posturing
  • Patient's postoperative cooperation is suspected to be insufficient for drain usage, i.e. disoriented or semiconscious patient
  • Patient has a hematogenic that has obtained active treatment within the previous five years
  • Patient has a central nervous system tumor or malignancy
  • Patient has acute infection with fever and requires antibiotic treatment at the moment
  • Patient has a high risk of life-threatening thrombosis (e.g. recent coronary stent, recent pulmonary embolism, low cardiac valve replacement) and discontinuation of antithrombotic medication is not recommended
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.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
587 participants (actual)

Study arms

  • Active comparator
    Irrigation group (IR)

    A burr-hole craniostomy is performed and the dura is opened sharply and 10 ml of subdural exudate is aspired with blunt aspiration needle for a CSDH sample to be stored in -70℃ to be used for later analysis. Subdural space is irrigated by repeated rinsing with body temperature saline solution with a syringe and blunt needle until surgeon considers exudate to be clear. Minimum volume of irrigation will be 200 ml per operated side. The subdural drain is inserted 3-5 cm underneath the skull and parallel to it. The total volume of irrigation as well as the duration of operation is recorded.

    Procedure: Intraoperative irrigation

  • Experimental
    No-Irrigation group (N-IR)

    A burr-hole craniostomy is performed and a small incision to the dura is made and 10 ml of subdural exudate is aspired with blunt aspiration needle for a CSDH sample to be stored in -70℃ to be used for later analysis. The subdural drain is inserted approximately 3-5 cm underneath the skull and parallel to it. The duration of operation is recorded.

    Procedure: No irrigation

Interventions

  • ProcedureIntraoperative irrigation

    Operation with irrigation

  • ProcedureNo irrigation

    Operation without irrigation

06

What researchers measure

Primary outcomes

  1. Rate of re-operations of ipsilateral chronic subdural hematoma

    Rate of reoperations between groups

    Time frame: From operation up to 6 months after postoperatively

Secondary outcomes

  1. Change of Modified Rankin Scale (MRS) from baseline to 6 months after operation

    Modified Rankin scale ranges from 1 to 6, where 1 indicates normal daily functionality and 6 indicates death

    Time frame: At baseline, and at 2 and 6 months after operation

  2. Rate of mortality between intervention groups

    Rate of mortality between intervention groups

    Time frame: From operation up to 6 months postoperatively

  3. Duration of the operation between groups

    Time (minutes) used to complete the operation, from incision to last suture

    Time frame: Intraoperative measure

  4. Hospital length of stay between groups

    The duration of the stay in hospital (days)

    Time frame: From operation up to six months

  5. Change in the volume of CSDH in the CT or MRI image between baseline and 2 months post-operatively

    The volume of CSDH will be measured from preoperative CT or MRI and at 2 months after operation CT or MRI

    Time frame: Immediate preoperative and 2 months postoperatively

  6. Rate of complications and adverse events within 6 months

    Rate of complication rate between groups

    Time frame: within 6 months after operation

07

Study locations

1 site
  • Helsinki University Hospital
    Helsinki, Finland
08

References and documents

Publications

  • Tommiska P, Raj R, Schwartz C, Kivisaari R, Luostarinen T, Satopaa J, Taimela S, Jarvinen T, Ranstam J, Frantzen J, Posti J, Luoto TM, Leinonen V, Tetri S, Koivisto T, Lonnrot K. Finnish study of intraoperative irrigation versus drain alone after evacuation of chronic subdural haematoma (FINISH): a study protocol for a multicentre randomised controlled trial. BMJ Open. 2020 Jun 21;10(6):e038275. doi: 10.1136/bmjopen-2020-038275. PubMed 32565480 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — Individual participant data (IPD) is available upon request when General Data Protection Regulation (GDPR) and guiding legislation regulations are fulfilled.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report

Time frame: Study protocol and Statistical Analysis Plan (SAP) will be published after the study has started. Other document will be available as study proceeds and after study is completed.

Access criteria: Data access request will be reviewed by FINISH-trial steering group. Requestors will be required to sign a Data Access Agreement.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 21, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04203550
Responsible party
Kimmo Lonnrot (Principal Investigator, Helsinki University Central Hospital) — Principal investigator
First posted
Dec 18, 2019
Start date
Jan 1, 2020
Primary completion
Feb 14, 2023
Completion
Feb 14, 2023
Last update
May 21, 2024

Study contacts

Kimmo Lönnrot, MD, Ph.D
principal investigator · Helsinki University Central Hospital

Oversight

Data monitoring committee
Yes
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 May 2024. You cannot join it, but the record below documents what was studied.

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