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Related Concept Videos

Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

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Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this...
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Increased Intracranial Pressure ll: Pathophysiology01:29

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Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins...
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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
Cranial Meninges
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Cerebral Edema l: Introduction01:19

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Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Aneurysm I: Introduction01:30

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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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Accessing the Subdural Space of the Rodent Spinal Cord for Treatment Delivery
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Published on: August 8, 2025

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Dural ectasia.

Neha Gupta1, Veena Gupta1, Abhishake Kumar1

  • 1Department of Anaesthesia, M. L. B. Medical College, Jhansi, Uttar Pradesh, India.

Indian Journal of Anaesthesia
|June 26, 2014
PubMed
Summary
This summary is machine-generated.

Dural ectasia can cause failed spinal anesthesia by increasing cerebrospinal fluid volume, restricting anesthetic spread. Successful epidural anesthesia was achieved in a patient with this condition.

Keywords:
Causes of spinal anaesthesia failuredural ectasiafailed spinal anaesthesia

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Area of Science:

  • Anesthesiology
  • Neurosurgery
  • Radiology

Background:

  • Dural ectasia, an expansion of the dural sac, is a potential but often overlooked cause of spinal anesthesia failure.
  • Conditions associated with dural ectasia include Marfan syndrome, neurofibromatosis, and trauma.
  • Increased cerebrospinal fluid volume in dural ectasia may impede the spread of intrathecal local anesthetics.

Purpose of the Study:

  • To highlight dural ectasia as a cause of failed spinal anesthesia.
  • To report a case of failed spinal anesthesia with successful epidural anesthesia in a patient with dural ectasia.

Main Methods:

  • Case report detailing a patient experiencing failed spinal anesthesia.
  • Review of potential causes for inadequate spinal anesthesia, focusing on dural ectasia.
  • Subsequent successful epidural anesthesia administration.

Main Results:

  • The patient presented with failed spinal anesthesia.
  • Dural ectasia was identified as the likely underlying cause.
  • Epidural anesthesia was successfully administered in a later setting.

Conclusions:

  • Dural ectasia should be considered in cases of incomplete or failed spinal anesthesia.
  • Understanding the pathophysiology of dural ectasia is crucial for anesthetic management.
  • Alternative anesthetic techniques, such as epidural anesthesia, may be successful when spinal anesthesia fails due to dural ectasia.