T1 Flashcards
Depot Medication - Advantage
Drug bypasses gastrointestinal absorption
No first-pass metabolism effect
Lower rates of relapse
Depot Medications - Disadvantages
Need to be administered deep into muscle tissue
Can irritate the skin and cause pain at injection site
Hold risk of severe and long lasting side effects if not screened properly
All depot medication should be administered as a deep ____
Intramuscular injection
Preferred sites for depot medications? (unless package indicates differently)
Gluteal sites
T/F - Dosage for short-acting injectable antipsychotic medication differs from therapeutic dosage of a depot medication
True
How can you know the difference between depot vs. other injections (?)
Label
Dosage
Thickness (depot will be thicker)
Nervous System Side Effects
EPS
Tardive dyskinesia
Anticholinergic side effects
Neuroleptic malignant syndrome
Sedation
Confusion
Headaches
Seizures
Sleep disturbances
EPS
Group of motor disturbances caused by dopamine being blocked in the nigrostriatal pathway
Typical antipsychotics are mostly to cause EPS
Some can be controlled with Antiparkinsonian medication
EPS - akathisia
Most common EPS
Motor-restlessness or inability to sit still
Condition is completely outside voluntary control (different from agitation)
Improves with benzodiazepine or propranolol
EPS - bradykinesia
“without movement or slowed movements”
Immobility or weakness
Complaints of fatigue
Lack of muscle movement
Can be confused w/ negative symptoms of schizophrenia
Increased dose of medication will increase symptoms
EPS - Pseudo-parkinsonism
Onset - first week of drug therapy
Loss in muscle movement (akinesia)
Mask like facial expression
Stooped posture
Muscle rigidity (COGHWEEL)
Tremors
EPS - Acute Dystonic Reactions
Sudden, uncoordinated prolonged abnormal tonic contractions of muscle groups
ADR - Torticollis or Retrocollis
Spasm of sternocleidomastoid muscle (muscles in neck)
Retrocollis - straight and constricted
Opisthotonos or Pleurthotonus (Pisa Sign)
Spasm of all muscles surrounding spine
Oculogyric crisis
Eyes roll upwards, severe muscle spasms, thick tongue, protrusion of tongue
Thickening or protrusion of tongue
Difficult to swallow
What do acute dystonic reactions respond well with?
Anticholinergics
Tardive Dyskinesia
Prominent with high potency and high doses of typical antipsychotics
Irreversible and no effective treatment
Caused by: chronic exposure to dopamine receptor blocking agents in nigrostriatal pathway
Can be monitored using Abnormal Involuntary Movement Scales
When is the best time to use AIMS?
After patient’s done sleeping
Signs of Tardive Dyskinesia
Constant chewing, facial grimacing, facial and tongue movement, limb movements
Anticholinergic Side Effects
In nigrostriatal pathway - dopamine blocks cholinergic receptors
Peripheral Anticholinergic Side Effects - dry mouth, constipation, urinary retention, blurred vision
Central Anticholinergic Side Effects - impaired concentration, confusion, attention deficit
Neuroleptic Malignant Syndrome
Hypodopaminergic state (severe low dopamine)
1% can be fatal
Risk
increase of antipsychotic medication
dehydration, physical exhaustion, malnutrition
Symptoms the NMS
EPS (muscle rigidity)
Increased body temperature (diaphoresis)
Change in consciousness
Fluctuating BP, tachycardia, decrease respirations
Treatment of NMS
Immediate discontinuation of drug
dopamine AGONIST bromocriptine
Fluids, electrolytes
Endocrine System
Metabolism
Sexual Hormone Dysregulation
Metabolism
Antipsychotics can cause weight gain, increased appetite
Risk for diabetes and metabolic syndrome
Which two drugs have the highest metabolic side effects?
Olanzapine and Clozapine
Sexual Hormone Dysregulation
Blocking dopamine in the Tuberoinfundibular dopamine pathway - increase in prolactin concentrations = leading to hyperprolactinemia
Side effects of SHD
Disturbances in menstruation
Lactation in women
Gynecomastia (male breast enlargement)
Rapid demineralization of bones
Sexual dysfunction
Cardiovascular System
Orthostatic Hypotension
OT interval
Agranulocytosis
Orthostatic Hypotension
Blocking adrenergic receptors
Sudden drop of BP from lying to sitting, lying to standing, or sitting to standing
QT Intervals
Antipsychotics and prolong QT Intervals
Marker for arrhythmic risk
Lead to cardiac arrest or transient loss of consciousness
Agranulocytosis
SERIOUS side effect
Failure of bone marrow to make enough granulocytes (neutrophils)
Sx include
Fatigue
Sore throat
Ulcers in mouth or throat
Fever and severe chills
Treatment of agranulocytosis
Blood tests to determine WBC count
Clozaril: Double Edged Sword
Benefits:
Good effectiveness compared to other antipsychotics
Effective in decreasing hallucinations and delusions
Treatment for recurring suicidal behaviour
Risks:
May cause agranulocytosis
Can interact with other drugs that decrease WBC count
Weight gain and metabolic issues
Cause constipation
Clozapine Protocol
Titrated up slowly
If client is non-compliant for a period of time, titration needs to restarted
Requires weekly WBC levels within first 6 months - after this period, it will be biweekly
Exocrine System
Photosensitivity
Dermatological/Temperature Regulation Effects
Photosensitivity
Sensitivity to the sun
Redness, blisters, and abnormal skin pigmentation
Dermatological/Treatment Regulation Effects
Hyperthermia
Polydipsia - water intoxication
Dermatitis
Steven Johnson Syndrome