Related Experiment Video
Updated: Jun 3, 2026

11:05
SECONDs Administration Guidelines: A Fast Tool to Assess Consciousness in Brain-injured Patients
Published on: February 6, 2021
[A man with decreased consciousness, weeks after head trauma]
Nathalie E Synhaeve1, Cees C Tijssen
1St. Elisabeth ziekenhuis, afd. Neurologie, Tilburg, the Netherlands. n.synhaeve@elisabeth.nl
Nederlands Tijdschrift Voor Geneeskunde
|March 25, 2011
Summary
A 76-year-old man experienced decreased consciousness following head trauma. Imaging revealed bilateral subdural hematomas, indicating both old and recent bleeding in the brain.
Area of Science:
- Neurology
- Neurosurgery
- Radiology
Background:
- Subdural hematomas are collections of blood between the dura mater and the arachnoid mater.
- Head trauma is a common cause of subdural hematomas, particularly in older adults.
Observation:
- A 76-year-old male patient presented with a 6-week history of decreased consciousness.
- Cerebral computed tomography (CT) scan was performed to investigate the cause of altered mental status.
Findings:
- The CT scan demonstrated bilateral subdural hematomas.
- The hematomas exhibited evidence of both chronic (old) and acute (recent) bleeding.
Implications:
- Bilateral subdural hematomas can lead to significant neurological deficits, including decreased consciousness.
- The presence of mixed-age components suggests a complex or recurrent bleeding process requiring further investigation and management.
Related Concept Videos
Traumatic Brain Injury l: Introduction
DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...
Amnesia
Amnesia is a condition marked by long-term memory loss, which impairs the ability to recall past events or create new memories.
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
Subconsciousness and No Awareness
The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...

