41 Neurosurgery

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of nerve injury involves the disruption of axon and myelin sheath, requiring surgery for recovery?

  • Regeneration
  • Neurotmesis (correct)
  • Axonotmesis
  • Neurapraxia

What is the function of the posterior communicating arteries in the circle of Willis?

  • Connect middle cerebral arteries to anterior cerebral arteries
  • Connect middle cerebral arteries to posterior cerebral arteries (correct)
  • Branch off to form anterior cerebral arteries
  • Form the basilar artery

What is the main function of antidiuretic hormone (ADH) in response to high plasma osmolarity?

  • Increases water secretion from the collecting ducts
  • Increases water absorption in distal convoluted tubules
  • Decreases water absorption in collecting ducts
  • Increases water absorption in collecting ducts (correct)

Which artery branches off the middle cerebral arteries and is connected to the other through the anterior communicating artery in the circle of Willis?

<p>Anterior cerebral arteries (A)</p> Signup and view all the answers

What imaging technique is recommended to rule out hemorrhage in a suspected stroke case?

<p>CT scan (C)</p> Signup and view all the answers

At what rate does nerve regeneration occur?

<p>$1 mm/day$ (B)</p> Signup and view all the answers

What is the most common primary brain tumor in adults and overall?

<p>Glioma multiforme (B)</p> Signup and view all the answers

Which type of brain tumor is uniformly fatal?

<p>Glioma multiforme (C)</p> Signup and view all the answers

What is the #1 metastasis to the brain?

<p>Lung cancer (B)</p> Signup and view all the answers

Which symptom is commonly associated with acoustic neuroma?

<p>Hearing loss (A)</p> Signup and view all the answers

What is the main goal of treating subarachnoid hemorrhage due to cerebral aneurysms?

<p>All of the above (D)</p> Signup and view all the answers

Which type of spinal cord injury is most commonly associated with hyperextension of the cervical spine?

<p>Central cord syndrome (A)</p> Signup and view all the answers

Which condition results in bilateral loss of motor, pain, and temperature sensation below the level of lesion?

<p>Anterior spinal artery syndrome (D)</p> Signup and view all the answers

Which type of hematoma is caused by torn bridging veins and has a crescent shape on head CT?

<p>Subdural hematoma (B)</p> Signup and view all the answers

What is the most sensitive test for spinal cord injury?

<p>Magnetic resonance imaging (MRI) (A)</p> Signup and view all the answers

What are the symptoms commonly associated with subarachnoid hemorrhage (nontraumatic)?

<p>Worst headache of their life, stiff neck, neurologic defects (A)</p> Signup and view all the answers

What are the symptoms of increased intracranial pressure (ICP)?

<p>Stupor, headache, nausea and vomiting (A)</p> Signup and view all the answers

What is the first-line treatment for subdural hematoma?

<p>Operate for significant neurologic degeneration or mass effect (thickness &gt;10 mm or midline shift &gt;5 mm) (B)</p> Signup and view all the answers

What is the most common site of occurrence of myelomeningocele?

<p>Lumbar region (C)</p> Signup and view all the answers

Which cranial nerve is responsible for both taste sensation to the anterior two-thirds of the tongue and motor function to the face?

<p>Facial nerve (VII) (B)</p> Signup and view all the answers

What is the function of Broca's area in the brain?

<p>Speech motor function (C)</p> Signup and view all the answers

Which nerve innervates the lateral rectus muscle of the eye?

<p>Abducens nerve (VI) (A)</p> Signup and view all the answers

What is the main symptom of reflex sympathetic dystrophy (causalgia)?

<p>Constant burning pain in the affected area (C)</p> Signup and view all the answers

What is the recommended treatment for a brain abscess if it is larger than 2.5 cm?

<p>Surgical removal (C)</p> Signup and view all the answers

In pediatric neurosurgery, what are the symptoms of intraventricular hemorrhage (subependymal hemorrhage) seen in premature infants?

<p>Bulging fontanelle, neurologic deficits, and decreased BP (B)</p> Signup and view all the answers

For a patient with pituitary adenoma undergoing XRT who presents with shock, what is the most appropriate initial treatment?

<p>Corticosteroids (A)</p> Signup and view all the answers

What are the risk factors for intraventricular hemorrhage (subependymal hemorrhage) in premature infants?

<p>Low birth weight, maternal diabetes, and high oxygen concentration therapy (A)</p> Signup and view all the answers

In cervical nerves roots 3–5 innervate diaphragm, which nerve innervates the diaphragm?

<p>Phrenic nerve (A)</p> Signup and view all the answers

Flashcards

Neurotmesis

A type of nerve injury involving complete severing of the nerve, requiring surgery for repair.

Posterior Communicating Arteries

Connect the middle cerebral arteries (supply blood to the lateral brain) to the posterior cerebral arteries (supply blood to the back of the brain).

Antidiuretic Hormone (ADH) Function

Increases water reabsorption in the collecting ducts of the kidneys, concentrating urine and reducing water loss.

Anterior Cerebral Arteries

Arteries branching from the middle cerebral artery, supplying blood to the frontal and parietal lobes, and connected via the anterior communicating artery.

Signup and view all the flashcards

CT Scan for Stroke

Imaging technique used to quickly identify bleeding in the brain, crucial for diagnosing stroke.

Signup and view all the flashcards

Nerve Regeneration Rate

A nerve's ability to regrow after injury, approximately 1 millimeter per day.

Signup and view all the flashcards

Glioma Multiforme

The most prevalent primary brain tumor in adults, aggressive and fast-growing.

Signup and view all the flashcards

Glioma Multiforme (Fatal)

A type of brain tumor with a high mortality rate, lacking effective treatments.

Signup and view all the flashcards

Lung Cancer Metastasis to Brain

Cancer that frequently spreads to the brain, usually originating from the lungs.

Signup and view all the flashcards

Acoustic Neuroma

A tumor affecting the eighth cranial nerve (vestibulocochlear nerve), often causing hearing loss and balance problems.

Signup and view all the flashcards

Treating Subarachnoid Hemorrhage

The primary aim of treating subarachnoid hemorrhage due to aneurysms is to prevent re-bleeding and reduce the risk of complications by controlling pressure, surgically repairing the aneurysm, and addressing any neurological deficits.

Signup and view all the flashcards

Central Cord Syndrome

This type of spinal cord injury is caused by hyperextension of the neck, leading to damage to the cervical spinal cord.

Signup and view all the flashcards

Anterior Spinal Artery Syndrome

Condition where damage to the anterior spinal artery results in loss of motor function, pain, and temperature sensation below the injury level.

Signup and view all the flashcards

Subdural Hematoma

A hematoma caused by torn veins bridging the brain and dura mater, appearing crescent-shaped on a CT scan.

Signup and view all the flashcards

MRI for Spinal Cord Injury

The most sensitive imaging technique for diagnosing spinal cord injuries, providing detailed information about the extent of the injury.

Signup and view all the flashcards

Subarachnoid Hemorrhage Symptoms

The classic symptoms of subarachnoid hemorrhage include a sudden, severe headache, often described as 'the worst headache of their life,' accompanied by neck stiffness and potential neurological deficits.

Signup and view all the flashcards

Increased Intracranial Pressure (ICP)

Elevated pressure within the skull caused by swelling or fluid buildup, resulting in symptoms like stupor, headache, nausea, and vomiting.

Signup and view all the flashcards

Treating Subdural Hematoma

The first-line treatment for subdural hematoma is surgical intervention for significant neurological decline or mass effects, typically when the hematoma thickness exceeds 10 millimeters or midline shift exceeds 5 millimeters.

Signup and view all the flashcards

Myelomeningocele Location

The most common location for myelomeningocele, a birth defect where the spinal cord doesn't close properly.

Signup and view all the flashcards

Facial Nerve Function

The facial nerve (VII) controls both taste sensation for the anterior two-thirds of the tongue and facial muscle movement.

Signup and view all the flashcards

Broca's Area Function

An area in the brain responsible for producing speech by controlling the muscles involved in articulation.

Signup and view all the flashcards

Abducens Nerve Function

The abducens nerve (VI) innervates the lateral rectus muscle, which helps move the eye outward.

Signup and view all the flashcards

Reflex Sympathetic Dystrophy (Causalgia)

A condition characterized by persistent burning pain in an affected area, often following an injury or nerve damage. It's also known as causalgia.

Signup and view all the flashcards

Treating Brain Abscess

Surgical removal is the preferred treatment for brain abscesses larger than 2.5 centimeters, aimed at eliminating the infection and preventing complications.

Signup and view all the flashcards

Intraventricular Hemorrhage (Subependymal Hemorrhage) Symptoms

Symptoms in premature infants include bulging fontanelle, neurological deficits, and decreased blood pressure, suggesting bleeding in the brain's ventricles.

Signup and view all the flashcards

Intraventricular Hemorrhage Risk Factors

Premature infants with low birth weight, maternal diabetes, and those receiving high oxygen concentration therapy are at higher risk of developing intraventricular hemorrhage.

Signup and view all the flashcards

Phrenic Nerve Function

The phrenic nerve, originating from the cervical nerve roots 3–5, controls the diaphragm, the primary muscle for breathing.

Signup and view all the flashcards

More Like This

Use Quizgecko on...
Browser
Browser