Orbital Artery Doppler Ultrasound in Brain Death

Korgün Ökmen

Status: Completed

Conditions: Brain Death

Treatments: Diagnostic Test: Orbital Doppler ultrasonography; Diagnostic Test: Transcranial Doppler ultrasonography; Diagnostic Test: Computed Tomography Angiography

Study type: Interventional

Funder types: Other

Identifiers

NCT06229782

2017-15 /33

Details and patient eligibility

About

Brain death is the irreversible loss of all activity in the brain, brainstem, and cerebellum, the part of the central nervous system that remains inside the skull.

The clinical diagnosis of brain death should be supported by ancillary tests that provide information about cerebral blood flow or electrical activity in the brain. Some of the ancillary tests that evaluate cerebral blood flow include transcranial Doppler ultrasonography (TDUS), computed tomography (CT) angiography (CTA), and catheter-based cerebral angiography.

This study hypothesized that Orbital Doppler ultrasonography (ODUS) alone is more effective than TDUS in detecting intracranial blood flow in diagnosing brain death. To this end, the investigators examined the results of ODUS in patients diagnosed as brain dead who underwent CT angiography.

Enrollment: 66 patients

Sex: All

Ages: 18 to 90 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• suspected brain death

Exclusion criteria

• eye surgery,
• uncontrolled diabetes mellitus,
• facial trauma,
• hypothermia,
• hypotension (systolic pressure < 100 mm Hg)
• endocrine-metabolic coma

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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66 participants in 1 patient group

ODUS

Other group

Description:

Orbital Doppler ultrasonography (ODUS) Patients in whom brain death was suspected and the diagnostic procedure was initiated underwent ODUS .ODUS were performed during the apnoea test and the first neurological examination. At the second neurological examination at 12 hours, ODUS were repeated.

Treatment:

Diagnostic Test: Computed Tomography Angiography

Diagnostic Test: Transcranial Doppler ultrasonography

Diagnostic Test: Orbital Doppler ultrasonography