1What is an aneurysm?
Bulges in blood vessels caused by a weakness in the blood vessel wall
2What does the central nervous system consist of?
The brain and the spinal cord
3What does the peripheral nervous system consist of?
Spinal and cranial nerves as well as the autonomic nervous system and the somatic nervous system
4What is the autonomic nervous system?
Consists of the sympathetic, parasympathic, and enteric nervous systems
5What does the somatic nervous system consist of?
Sensory: afferent (sending signals to the brain)
Motor: efferent (sending signals from the brain)
*Controls the body's movement and sensation
6What is the frontal lobe?
One of the four lobes of the cerebrum, responsible for cognitive processes, language, and motor function
7What is the temporal lobe?
One of the four lobes of the cerebrum, responsible for understanding language, and sensory information processing
8What is the parietal lobe?
One of the four lobes of the cerebrum, responsible for interpreting sensory information
9What is the occipital lobe?
One of the four lobes of the cerebrum, responsible for interpreting visual information
10What is the cerebrum?
It is responsible for intellectual activities. It is divided into a left and right hemisphere and four lobes (frontal, temporal, parietal, and occipital)
11What is the cerebellum?
Contains roughly 80% of all the brain's neurons and regulates voluntary motor movement and balance
-Constantly receives information about the body's joints, tendons, and muscles, which allows voluntary movement of extremities and completion of skilled movements
12What is the brain stem?
Connects the cerebrum to the cerebellum and spinal cord and is responsible for the body's vital functions.
-Consists of the midbrain, pons, and medulla oblongata
-Most of the cranial nerves emerge from the brainstem
13What is the medulla oblongata?
Located at the bottom of the brain stem and responsible for all autonomic functions
14What is the spinal cord?
Located within the vertebral column and is responsible for sending commands and sensory information between the brain and peripheral body
15What is the enteric nervous system?
Part of the nervous system responsible for the digestive system
16What happens when the sympathetic nervous system is stimulated?
"fight or flight" response
-Increase heart rate and blood pressure, halt gastrointestinal peristalsis, and induction of glycogenolysis
-Regulation of the immune system by innervating the thymus, spleen, and lymph nodes
17What is a migraine?
A primary headache that is recurrent, presents unilaterally and usually with throbbing or pulsing pain, vomiting, nausea, and photosensitivity
18What is the pathophysiology of seizures?
-Occur because of abnormal and unregulated electrical impulses in the brain's gray matter which interrupts the normal function of the brain
-The unregulated electrical impulses are a result of the excitation of some cerebral neurons and then spread to larger groups of neurons
-The number of neurons affected determines how intense or widespread the seizure is
19What is epilepsy?
A chronic condition that consists of recurrent seizures
20What are the three types of seizures?
-Generalized: also called grand mal or tonic-clonic; characterized by two stages, loss of consciousness followed by violent muscle contractions
-Focal: Odd experiences where awareness is maintained
-Unknown
21What is the etiology of seizures?
-Structural abnormalities: may be genetic and present from birth or may be acquired from conditions such as stroke, trauma, or cancer
-Genetic etiology: chromosomal or gene abnormalities
-Infection: one of the most common causes of seizures; more common with meningitis and encephalitis, but can occur with any infection
22What are the four stages of seizures?
-Podromal
-Early ictal or aura
-Ictal
-Postictal
23What is the prodromal phase of a seizure?
-First phase
Client may experience anxiety, mood changes, and difficulty sleeping
24What is the early ictal/aura phase of a seizure?
-Second stage
Client may experience strange tastes, smells, or feelings, such as deja vu or excitement
25What is the ictal phase of a seizure?
-Third phase spanning from the time of the first manifestation until seizure activity ends
26What are tonic movements?
Muscle contractions during seizure activity
27What are clonic movements?
Alternating muscle contraction and relaxation during seizure activity
28What are atonic seizures?
Present with a loss of muscle tone and consciousness, which can result in the client falling if they are standing
29What are myoclonic seizures?
Maintains consciousness and partial awareness and brief muscle contractions or jerks
-May experience only one or a series
30What medications are used as first-line treatment for clients experiencing a first seizure or status epilepticus?
Benzodiazepines such as lorazepam, diazepam, and midazolam
31What medications are used if a seizure does not respond to benzodiazepines?
Levetiracetam or barbiturates
32What is a transient ischemic attack (TIA)?
-Often called a mini stroke
-A neurological dysfunction that occurs when the flow of blood to the brain is temporarily blocked
33What is the clinical presentation of a transient ischemic attack (TIA)?
-Slurred speech
-Dizziness
-Headache
-Blurred or double vision
-One-sided weakness
-Aphasia
-FAST
34What is the FAST acronym?
F: Facial drooping - weakness or asymmetry of face
A: Arm weakness - numbness or weakness in one arm
S: Speech disturbance - slurring of speech
T: Time to call 911/activate stroke protocol - if one or more of these three manifestations are present
35What is hemiparesis?
Muscle weakness on one side of the body
36What is hemianopsia?
Loss of one-half of one's visual field, caused by a disruption in the central nervous system
37What is the primary treatment of TIA?
-Prevent stroke or another TIA
-Initiating antiplatelet medication therapy
38What is an ischemic stroke?
Occur when embolisms or plaques block arteries that supply the brain
39What is a hemorrhagic stroke?
Occurs when a blood vessel in the brain leaks or ruptures causing increased pressure on the brain
40What are common deficits with a right hemisphere stroke?
-Left hemiparesis and hemisensory loss
-Right visual field loss (hemianopsia)
-Aphasia
41What are common deficits with a left hemisphere stroke?
-Right hemiparesis and hemisensory loss
-Left visual field loss (hemianopsia)
42What is a pseudobulbar affect?
A neurological condition that causes involuntary, inappropriate crying or laughing
43What are fibrinolytic medications?
Medications administered to break up or dissolve blood clots and improve blood through arteries or veins; also called thrombolytic
44What is hydrocephalus?
A build-up of cerebrospinal fluid within the brain which may cause increased pressure within the head
45How are TBIs classified?
Mild, moderate, or severe
-GCS score 13-15=mild injury (sometimes referred to as a concussion)
-GCS score 9-12=moderate injury
-GCS score less than 8=severe injury
46What is a primary TBI?
Injury occurs at the moment of the initial injury because of contact with the head or brain by a blunt or penetrating force
47What is a secondary TBI?
-Occurs hours or even days after initial injury
-Results from inflammation, vasospasm, and ischemia within the tissues
48What is a concussion?
A mild head injury that may or may not cause temporary loss of consciousness and has manifestations including headache, blurred vision, fatigue, and amnesia of the event that caused the injury
49What is parkinson's disease?
A degenerative, progressive condition primarily caused by the gradual loss of cells in the substantia nigra of the brain. Manifestations include tremors, slow movement, stiffness, and problems with balance
50What is the mechanism of action of triptans?
Example: sumatriptan (imatrex)
-Causes vasoconstriction in large intracranial arteries
-Relieves migraines but does not prevent them
51What are adverse effects of triptans?
Example: sumatriptan (imatrex)
-May cause dizziness or drowsiness
-Notify provider immediately if chest tightness occurs during use
-Do not break or crush PO tablets
52What are contraindications for triptans?
Example: sumatriptan (imatrex)
-Latex allergy (subcut route only)
-Patients with ischemic heart disease
-Uncontrolled hypertension
-Stroke or TIA
53What is the mechanism of action of ergotamine?
-Usually used for patients with migraines who have not responded to NSAIDs or other treatments
-Promotes prolonged vasoconstriction by stimulating alpha-adrenergic and serotonergic receptors
54What are contraindications for ergotamine?
-Pregnancy/lactation
55What are signs and symptoms of ergotamine toxicity?
Chest pain, abdominal pain, paresthesia in extremities, gangrene
56What is the BEFAST acronym?
-Balance loss
-Eyesight changes
-Face drooping
-Arm weakness
-Speech difficulty
-Time to call 911
57What is hemiplegia?
Total paralysis
58What is hemiparesis?
Decreased sensation and spasticity (muscle stiffness)
59What is prosopagnosia?
-Right side
-Inability to recognize faces
60What is the pseudobulbar effect?
-Right side
-Uncontrolled emotional outbursts
61What is aphagia?
-Left side
-Language deficit which may be expressive or receptive
62What is dysphagia?
-Left side
-Difficulty swallowing
63What is the mechanism of action of warfarin?
-Caumadin
-Interferes with synthesis of vitamin K-dependent clotting factors
64What are considerations for warfarin?
Caumadin
-Contraindicated in pregnancy
-Effective levels reached within 3-5 days
-Assess for signs of bleeding
-Educate the patient about vitamin K rich foods (green foods, eggs)
65What needs to be monitored for patients taking warfarin?
PT and INR
66What happens with a cervical spinal cord injury?
-Paralysis in arms, trunk, and legs
-May be unable to breathe, cough, control bowel and bladder without assistance
-Requires 24-hour care
67What happens with a thoracic spinal cord injury?
-Usually impacts trunk and lower extremities
-Little to no control of bowel and bladder but can manage voiding with equipment
68What happens with a lumbar or sacral spinal cord injury?
-Impact to hips and legs
-Little to no control of bowel and bladder but can manage voiding with equipment
-Patients with sacral injuries can most likely walk
69What is the difference between a partial and a complete spinal cord injury?
-Partial: some feeling or sensation below the level of injury
-Complete: all feeling and movement below the level of the injury is lost
70What is paraplegia?
Paralysis of the legs and lower body
71What is tetraplegia/quadriplegia?
Paralysis below the neck that affects the arms and legs
72What is treatment for Parkinson's disease focused on?
Increasing the amount of dopamine or decreasing the amount of acetylcholine in the brain
73What are manifestations of Parkinson's disease?
-Stooped posture
-Slow, shuffling, and propulsive gait
-Tremors/pill-rolling tremor of the fingers
-Muscle rigidity (rhythmic interruption, mildly restrictive, total resistance to movement)
-Bradykinesia/akinesia
-Masklike expression
-Autonomic findings (orthostatic hypotension, flushing, diaphoresis)
-Difficulty chewing and swallowing
74What are examples of dopaminergic medications?
Carbidopa/Levodopa (sinemet)
75What is the mechanism of action of dopaminergic medications?
Examples: Carbidopa/Levodopa (sinemet)
-Levodopa converts dopamine in the CNS
-Carbidopa prevents destruction of levodopa
-Onset within 10-15 minutes
76What are contraindications and adverse effects of dopaminergic medications?
Examples: Carbidopa/Levodopa (sinemet)
-Do not use with non-selective MAO inhibitors
-High-protein meals impair medication effects
-Monitor for GI upset, behavioral changes, impulsivity
-"wearing off effect" may occur after dose wears off
77What is an example of a dopamine agonist medication?
Pramipexole (mirapax)
78What is the mechanism of action of dopamine agonist medications?
Example: Pramipexole (mirapax)
-Decreases tremor and rigidity by stimulating dopamine receptors in the brain
79What are considerations and adverse effects of dopamine agonist medication?
Example: Pramipexole (mirapax)
-May be taken with dopaminergic medications
-May induce drowsiness or sleep attacks
-Orthostatic hypotension may occur; teach patient to change positions slowly
-Monitor for new or increasing compulsive behavior or signs of psychosis
80What is vascular dementia?
Changes to the brain vasculature disrupts oxygen supply to brain cells
81What is Lewy Body dementia?
Deposits of protein block communication between neurons
82What is frontotemporal dementia?
-Rare form seen in clients who are less than 60
-Increase in proteins, causing loss of neurons
-Affecting frontal and temporal lobes with changes in behavior, language, and emotions
83What is the mechanism of action of donepezil (aricept)?
Inhibits acetylcholinesterase and makes more acetylcholine available
-Enhances cognition but does not cure Alzheimer's disease
84What are adverse effects are associated with donepezil (aricept)?
-Takes weeks for efficacy to become apparent
-May cause dizziness
-Notify provider if nausea, vomiting, diarrhea, or changes in stool color occur
85What is the mechanism of action for memantine (Namenda)?
Binds to N-methyl-D-aspartate (NMDA) receptor sites, preventing the binging of glutamate, and excitatory neurotransmitter
-Increase in cognitive functioning may take months
86What are considerations for memantine (Namenda) use?
-May cause dizziness
-Decrease dose in patients with kidney impairment
87What is the mechanism of action for rivastigmine (exelon)?
Enhances cognitive ability by inhibiting cholinesterase (reversible)
88What are considerations for rivastigmine (exelon) use?
-Monitor for contact dermatitis after transdermal use, if observed switch to oral route
-May cause dizziness
-Notify health care professional of medication regimen before treatment or surgery
89What is the mechanism of action of pimavanserin (nuplazid)?
Manages hallucinations and delusions associated with Parkinson's disease psychosis
90What are considerations for pimavanserin (nuplazid) use?
-Increased risk for mortality in older adults treated for psychosis related to dementia
-Risk for QT interval prolongation
-Two tablets once daily with or without food
91What is Sheehan syndrome?
A rare condition that occurs when the pituitary gland located at the base of the brain, is damaged due to severe blood loss during or after childbirth
92What are symptoms of sheehan syndrome?
-Inability to breastfeed
-Absense of menstrual periods
-Fatigue
-Low blood pressure
-Growth hormone deficiency
-Adrenal insufficiency
93What is a cesarean delivery?
A surgical procedure that involves delivering a baby through an abdominal incision (laparotomy) and a uterine incision (hysterotomy)
94What risks are associated with a cesarean delivery?
-Infection
-Bleeding
-Longer recovery times compared to vaginal births
95What are common indications for cesarean delivery?
-Labor dystocia
-Fetal distress
-Abnormal fetal positioning
-Placental complications
96How does preoperative management of anesthesia in children differ from that in adults?
-Employing cognitive and age-appropriate language
-Understanding the dynamics of the patient's family
-Assessing the patient's development stage
97What are important age-specific considerations for pediatric clients age 0-6 months?
Patients are completely unaware of their surroundings, and it is a time of maximal parental anxiety
98What are important age-specific considerations for pediatric clients age 6 months to 4 years?
-Patients experience maximum stranger and separation anxiety
-Children in this age group are unable to understand processes and explanations
-They may exhibit significant postoperative emotional upset and behavior regression
-These patients are also vulnerable to magical thinking
99What are important age-specific considerations for pediatric patients age 4-8 years?
Patients begin to understand processes and explanations however, their fear of separation remains, and they are concerned about body integrity
100What are important age-specific considerations for pediatric patients age 8 years to adolescence?
-Patients tolerate separation and understand processes and explanations
-May interpret everything in a literal sense
-May fear waking up during surgery or not waking up at all
-Adolescent patients are independent
-May have issues regarding self-esteem and body image
-As they are developing sexual characteristics, they may fear the loss of dignity and have a fear of the unknown