Cancer Toxicities Flashcards
metabolic causes of N/V
hyperglycemia
hypercalcemia
hypoadernalism
uremia
hyponatremia
anticipatory
learned response from previous emetic reactions
provoked by sight, sound, or smell
acute N/V
within 24 hours of chemo
delayed N/V
after 24 hours
substance P and NK1 binding
breakthrough N/V
N/V despite being treated with anti-emetics before
refractory N/V
N/V that persists despite anti-emetics
failed other therapies
patho of N/V
GI tract is disrupted by chemo
enterochomaffin cells release large stores of serotonin
chemoreceptor trigger zone stimulates vomiting center
input to vomiting center from what sources
higher cortical centers
pharynx
GI tract
wretching is what
labored movement before vomiting
neurotransmitters involved in N/V
dopamine, histamine, acetylcholine, serotonin, substance P
chemo induced N/V most common drug
cisplatin
highly emetogenic percentage and level
> 90% level 5
moderately emetogenic percentages and level
> 30-90% level 3-4
low emetic risk percentage and level
10-30% level 2
minimal emetic risk percentage
<10% level 1
level 1 and 2 effect on emetogenicity
do not effect when combined
when combining with a level 3/4 agent how much do we increase emetogenicity
1 level per drug added
N/V prophylaxis required when
moderate-high emetic risk agents
>30%
CINV risk factors
women
younger
hx motion sick, morning sick, CINV
anxious
what is protective of CINV
chronic alcohol use
highly emetogenic classes that need to be given CINV
5HT3 antagonist
steroid
options for highly emetogenic regimen
4 - NK-1 antagonist, steroid, 5HT3, antipsych
3- dexamethasone, palonosetron, olanzapin
3 - NK-1 antagonist, steroid, 5-HT3 antag
options for moderately emetogenic regimen
3- dexamethasone, palonosetron, olanzapin
3 - NK-1 antagonist, steroid, 5-HT3 antag
2 - steroid and 5HT3 antagonist
low emetogenic regimen and drugs
pick a drug
5HT3 antagonists
dexamethasone
metoclopramide
prochorperazine
what can be added to CINV regimens if needed for toxicities
H2RA/PPI
benzo (lorazepam)
agents that could be used for breakthrough nausea and vomiting
lorazepam
dronabinol
nabilone
5HT3s
dexamethasone
scopalamine
haloperidol
metoclopramide
prochlorperazine
promethazine
olanzapine
drug of choice in elderly pateints
prochlorperazine
delayed N/V treatments
NK-1 antagonists
dexamethasone
olanzapine
anticipatory N/V treatments
behavioral - hypnosis, music, yoga
accupuncture
LORAZEPAM
drug of choice for anticipatory N/V
benzos (lorazepam)
drug of choice initially for oral agents with high-moderate risk
5-HT3 antagonists
radiation in head /neck /GI N/V treatment
5-HT3 antagonists
drug of choice for radioactive treatments (Leutitium)
5-HT3s or NK-1s
which drug would be poor option in radiopharmaceuticals
steroids
side effects of 5HT3 antagonists?
headache
constipation
EKG changes
if 5HT has headache can we switch within the class?
yes, switch agents within class
max dose of 5HT3 antagonists
16 mg
corticosteroids side effects
hyperglycemia
increased appetite
insomnia
substance P / NK1 antags side effects
hiccups
dopamine antagonists side effects (chlorpromazine, haloperidol, metoclopramide
EPS symptoms
metoclopramide side effect
diahrhea
what are the dopamine antagonists
chlorpromazine
haloperidol
metoclopramide
olanzapine side effect
sedation
phenothiazine / promethazine side effect
sedation
dronabinol side effects
hallucinations
increased appetite
scopalamine side effect
cant see cant pee cant spit cant shit
what population would scopalamine be good for
younger
which drugs is EPS a risk
metoclopramide
prochlorperazine
promethazine
when to begin anti emesis therap
5-30 mins before
administer around the clock
when does mucositis occur
5 to 7 days after chemo start
WBCs start to drop
mucositis occurs where
in the mouth
could affect whole GI tract though
which drugs cause mucositis
5-FU
doxorubicin, other anthracyclines
mucositis is more common with what type of IV infusion
continuous
risk factors for mucositis
chemo and radiation combo
pre existing lesions
poor dental hygiene / dentures
diet reccomendations with mucositis
no spice, rough foods, salt, acid
eat bland and soft foods
avoid smoking and alcohol
pre treatment prevention of mucositis
dental screening
baking soda rinse
soft bristle tooth brusht
treatment of mucositis pain: topical anesthetic
topical anesthetic
lidocaine, diphenhydramine
Marys Magic
swish and spit
treatment of mucositis pain
use ice chips 30 mins before
sucralfate - some pts get nausaus
opioid
PCA used for what
moderate to severe mucositis
best thing for mucositis
WBCs going back up
pain meds
what is decreased white blood cells called
neutropenia
normal range WBCs
4.8-10.8
what is decreased platelets called
thrombocytopenia
platelet normal range
140-440
platelet deficiency causes risk of what
bleeding
neutropenia causes what
risk of life threatening infection
red blood cell deficiency is waht
anemia
anemia symptoms
hypoxia, fatigue
RBC normal range
4.6-6.2
what is nadir
lowest value of blood counts during cycle of chemo
to give chemo we need to have what counts
WBC > 3 x 10^3
OR
ANC >1.5 x 10^3 AND platelet >= 100
ANC equation
WBC x % granulocytes
severe neutropenia level
<0.5 x 10^3
febrile neutropenia is what
ANC < 0.5 x 10^3 and 101 temp
OR
100.4 temp for at least an hour
is febrile neutropenia bad
yes pts should go to hospital and get antibiotics
what is primary prophylaxis of neutropenic fever
> 20% chance it will cause neutropenic fever
(there are certain regimens in guidelines)
what is secondary prophylaxis of neutropenic fever
they had neutropenia complications with past chemo
what are the two CSF drugs?
filgrastim
pegfilgrastim
difference in filgrastim and pegfilgrastim
PEG longer 1/2 life, once subq
filgrastim once daily
first CSF biosimilar
filgrastim-sndz
is tbo-filgrastim a biosimilar?
no
which drug has a continuous injector on body
pegfilgrastin
when after chemo do we give filgrastim
3-4 days after chemo
when after chemo do we give pegfilgrastim
24 hours after chemo
adverse effects of CSFs
bone aches, flu like sx, DVT
what drug may help with side effects from CSFs
loratadine
when are platelets given?
sometimes if < 10 x 10^3
prior to surgery
active bleeding
anemia causes
decreased RBCs
decreased erythopoetin
decreased B12 and folic acid
anemia symptoms
fatigue
poor performance status
when should pt be worked up for anemia
HgB <11
>2 drop from baseline
when is pt symotomatic from anemia
fatigued, hard time getting around
blackbox warning of ESAs
increase risk of death and shorten survival time
who should not get ESAs
not on chemo
curative intent
not on myelosupressive chemo
who should get ESAs
if cancer with CKD
palliative chemo
best treatment for anemia
red blood cell transfusion
what does erythropoetin do
stimulates RBC production
goal for erythropoetin therapy
lowest Hgb level
when to reduce erythropoetin dose
if >1 increase in 2 week period
difference in darbopoetin
given every 2-3 weeks, long 1/2 life
what should we have as baseline done before ESA therapy
iron study
what to do if pt has low iron
supplement with oral iron (can be hard)
what drugs cause myalgias
taxanes
aromatase inhibitors
treatment for myalgias
NSAIDs
opioids
drug causing hemmoragic cystitis
cyclophosphamide
hemorrhagic cystitis treatment
hydration
mesna
heart failure drugs that cause
rubicins (anthracyyclines)
cyclophosphamide
trastuzumab
drugs causing peripheral neuropathy
taxanes
vinca alkaloids
platinums
drug causing pulmonary toxicities
bleomycin
what binds acrolein
mesna
mesna is taken to decrease what
risk of hemorrhagic cystitis
how does cardiac toxicity happen from anthracyclines
iron dependent free radicals
lower level of enzymes capable of detoxing the free radicals
acute cardiac tox from anthracyclines looks like what
occurs immediately after they take
not cumulative dose related
ECG findings (like pt having heart attack)
what is type 1 cardiac tox
anthracyclines
what is chronic cardiac tox type 1
more common
onset within a year
cumulative dose related
tachycardia, exercise intolerant,
Looks like chronic HF
what is late onset cardiac dysfunction type 1 and who does it occur in
years after therapy
pediatric population
CHF, arrythmias
doxorubicin cumulative dose when risk really goes up
450 mg/m2
7-8 cycles
what is type II cardiac dysfunction
HER2 therapies
(trastuzumab)
is Type II cardiac tox dose dependent
no not dose dependent
EGFR pathway
is Type II cardiac tox reversible or irreversible
reversible
is Type I cardiac tox reversible or irreversible
irreversible
highest risk of cardiac tox from which two drugs together
trastuzumab and antrhacycline
OPQRSTU
onset
provokes
quality
radiate
severity
time
understanding
pain scale 1-3 options
non -opioids
acetaminophen
ibuprofen
aspirin
pain scale 4-6 options
combo products
hydrocodone/acetaminophen
tramadol
any combo with acet / ibuprofen
pain scale 7-10 options
pure opioids
morphine caution in which pts
renal failure
hydromorphone vs morphine which is more potent
hydrophormone
hydromorphone excreted how
renally
oxycodone metabolized how
CYP2D6
oxycodone has casued what in renal failure pts
sedation and CNS toxicity
oxycodone isnt available in what dosage form
IV
fentanyl metabolized where
liver
which drug safe in renal dysfunction and liver dysfunction
fentanyl
what patients could use fentanyl as alternative
refractory N/V
cant take PO
(Patch)
Duragesic brand for wht
fentanyl
box warnings for fentanyl
risk addiction
respiratory depression
monitor closely
accidental exposure
avoid direct heat sources (after shower)
who shouldnt use fentanyl patch
opioid naive
who should use methadone
true morphine allergy
opioid induced ADRs
refractory to other opioids
neuropathic pain
long acting at low cost
who should avoid methadone
if many drug interactions
risks scyncope or arrythmia
adhernece issues
poor cognition
is stomach upset a morphine allergy
not a true allergy
is methadone an option for renal failure
yes , no adverse events
should we use methadone in liver failure
NO, not advised in liver dysfunction
which opioid causes QTC prolongation
methadone
when switching agents what can we do
decrease dose by 25%
perferred dosage form for opioids
oral
which opioid side effect do pts not develop tolerance to?
constipation, alwasy need a regimen
what to use for constipation regimen
stimulant laxative +/- stool softner
pruritis seen mostly with what drug
morphine
myclonic jerking is a sign of what
opioid toxicity
what to do if respiratory depression on opioid for chronic pain
give low dose Narcan, dilute with NaCl
caution with PCAs in what disease state
sleep apnea
PCA to oral how to convert
calculate 24 hour dose
convert to desired agent
reduce 25%
divide into appropriate
use PRN 10-20% of total dose every 3-4 hrsc
celiac plexus used in which pts
pancreatic caner pts where other meds arent working
intrathecal pump used for who
refractory to other opioids or increased toxicities
what doses are used in intrathecal?
lower doses
intrathecal meds (7)
morphine
hydromorphone
fentanyl
clonidine
baclofen
ziconotide
bupivacaine
radiation used in what
bony and brain metastates
what two drug help with bone metastasis
NSAIDs
dexamethasone
ECOG scale 0 = what
5 = what
0 = gets around just fine
5 = dead
RECIST used for what
scans