INCREASED INTRACRANIAL PRESSURE Flashcards
(29 cards)
WHAT ARE THE 3 MAJOR INTRACRANIAL COMPONENTS?
- Cerebrospinal fluid (CSF)
- Brain tissue
- Intravascular blood
is a clear fluid
circulating in the intracranial and spinal
compartments
Cerebrospinal fluid (CSF)
The brain produces about ____ ml of CSF per
day,
500 ML
CSF is secreted by ______ in each ventricle.
CHOROID PLEXUS
3 purposes of Cerebrospinal fluid (CSF)
- BUOYANCY
- PROTECTION
- CHEMICAL STABILITY
allows the brain to attain considerable size
without being impaired by its own weight.
BUOYANCY
CSF completely surrounds the brain, this organ floats in the
fluid. CSF protects the brain from striking the cranium when the head is jolted
PROTECTION
– CSF is secreted into each ventricle of the brain and is
ultimately absorbed into the blood stream. It provides a means of rinsing
metabolic wastes from the CNS and homeostically regulating its chemical
environment
CHEMICAL STABILITY
brain tissue has three distinct parts:
the cerebrum, cerebellum, and the brainstem.
. An increased in intracranial bulk
due to an increase in any of the
major intracranial components: 3 KABILOG
BRAIN TISSUE, CSF, BLOOD
ANO TAWAG SA Untreated increased ICP can lead to
displacement of brain tissue
HERNIATION
INFANTS OR CHILDREN:
▪ Tense, bulging fontanel; lack of
normal pulsations -
▪ Separated cranial
sutures
▪ Macewen sign
(cracked-pot sound
on percussion)
▪ Irritability
▪ High-pitched cry
▪ Increased occipitofrontal
circumference
▪ Distended scalp veins
▪ Changes in feeding
▪ Cries when held or rocked
▪ Setting-sun sign
INFANTS
INFANTS OR CHILDREN
▪ Headache
▪ Nausea
▪ Vomiting – often without nausea – projectile
▪ Diplopia, blurred vision
▪ Seizures
CHILDREN
ANO TAWAG SA abnormal
respiratory pattern. Rhythmic waxing and
waning of both rate and depth of respiration
with brief periods of interspersed apnea
CHEYNE STOKES RESPIRATIONS
ANO TAWAG SA - (edema of the optic disc)
PAPILLEDEMA
ANO TAWAG SA MAY MOTOR ABNORMALITIES
Decerebrate or decorticate
posturing
ANO NGA Diagnostic/Laboratory Test ANG GINAHIMO IF MAY INCREASED INTRACRANIAL PRESSURE AND ISA KA TAWO? 7 KABILOG
- Cerebral angiography
- Computed tomography (CT)
scanning - Magnetic resonance imaging (MRI) of the brain
- Positron emission tomography (PET) scan of the brain
- Transcranial Doppler studies
- Skull and spine x-rays
- Electroencephalography (EEG)
ANO KLASE NGA DIAGNOSTIC/LABORATORY TEST INI:
is done
to visualize the cerebral
circulation (carotid and
vertebral arteries). A catheter (long, thin, flexible tube) is inserted into an artery in the
arm or leg. Using the
catheter, a technician injects a special dye into the blood vessels that lead to the brain. It is a way to produce x-ray pictures of the insides of blood vessels.
CEREBRAL ANGIOGRAPHY
ANO KLASE NGA DIAGNOSTIC/LABORATORY TEST INI:
relatively accurate
and is the quickest, easiest, and least expensive method of diagnosing neurologic
problems
COMPUTERED TOMOGRAPHY (CT) SCANNING
ANO KLASE NGA DIAGNOSTIC/LABORATORY TEST INI:
- Produces images considered
superior to the CT scan. It does not use ionizing radiation but instead relies on magnetic fields. - Injection of the gadolinium-based
contrast agent is
performed through a small an intravenous catheter that is placed in a hand vein or an arm
vein of the patient.
MAGNETIC RESONANCE IMAGING (MRI) OF THE BRAIN
ANO KLASE NGA DIAGNOSTIC/LABORATORY TEST INI:
Provides information about the function of the brain, especially glucose and oxygen
metabolism and cerebral blood flow
- The physician injects the client with a molecule deoxyglucose, which is tagged as an isotope.
- The isotope emits
activity in the form of
positrons, which are
scanned and converted
into a color image by a
computer. The more
active a given part of the
brain, the greater the
glucose uptake. - Procedure: 2 to 3 hours
Positron emission
tomography
(PET) scan
ANO KLASE NGA DIAGNOSTIC/LABORATORY TEST INI:
is a noninvasive and
painless ultrasound technique that
uses sound waves to evaluate
blood flow (blood circulation) in
and around the brain
- Valuation in evaluating cerebral
vasospasm.
TRANSCRANIAL DOPPLER STUDIES
ANO GINAGAMIT IN EVALUATING CEREBRAL VASOSPASM?
VALUATION
ANO KLASE NGA DIAGNOSTIC/LABORATORY TEST INI:
- Plain x-rays of the skull
and spine used to
determine bony
fractures, curvatures,
bone erosion, bone
dislocation, and possible
calcification of soft
tissue, which can damage the nervous system.
SKULL AND SPINE X-RAYS