Pharmacology 2: Pulmonary, Pain, GI, thyroid, Psych Flashcards
NSAID families
1) Carboxylic Acids (ASA)
2) Proprionic Acids (Ibu and naproxen)
3) Acetic Acid Deriv (Indomethacin, diclofenac, ketorolac)
4) Enorlic Acids (piroxicam, meloxicam)
* *pts may respond to one family and not another)
* *HAVE A REVERSIBLE PLATELET EFFECT**
Who shouldn’t get NSAIDs?
- PREGOS
- pts w/ HTN< HF, CKD, asthma, PUD
NSAID interactions
- use warfarin w/ great caution
- increased risk of GI bleed w/ anti-platelet agents, ETOH, and corticosteroids
- interferes w/ anti platelet effect of ASA (stop all NSAIDs indefinitely in AMI pts…except ASA)
NSAID ADR
- GI effects
- Nephrotoxicity
Mild to Moderate Opiod Agonists
1) Phenanthrenes (codeine, hydrocodone)
2) Phenylheptylamines (removed from market)
3) Phenylpiperidines (diphenoxylate and loperamide = antidiarrheals)
Strong Opiod Agonists
1) Phenanthrenes (morphine, oxycodone, oxymorphone, hydromorphone)
2) Phenylheptylamines (methadone…stay away)
What are H2 blockers good for?
PRN use
H2 Class interactions
- decrease absorption of iron, digoxin etc (these need acidic enviro to be absorbed)
- cimetidine has many potential interactions
Cimetidine specific ADRs
- Drug fever
* *Anti-androgen effects (ED, gynocomastia)
When to take PPI?
30-60 min before 1st meal of the day
PPI interactions
- decrease absorption of iron, digoxin etc
- several inhibit CYP2C19 = clopidogrel interaction
PPI ADRs
- anemia
- fractures
- C. dif
- pneumonia
- acid rebound w/ d/c = taper off
Promethazine MOA
-H1 receptor antagonist & D2 receptor antagonist
aka phenergan
Promethazine indications
- antiemetic (not in kids <2y/o= fatal resp depression)
- pain management adjunct (ie migraine)
Promethazine interactions
- Levodopa (may inhibit anti-parkinson effect)
- QTc prolongation w/ concomitant meds (Type IA & III antiarrhythmics, fluoroquinolones)
ADRs of promethazine
- EPS
- may alter cardiac conduction
Dopamine receptor antagonists (list)
- promethazine (also H1 blocker)
- prochloperazine (compazine) same info as promethazine
- metocloprmide (reglan)
Metocloperamide indications
-prevention and tx of chemo induced emesis, post op N/V
-diabetic gastroparesis
(interactions are the same as promethazine)
Metoclopramide ADRs
Acute dystonia (chronic use or high dose) = Black Box Warning (lots of lawsuits)
Serotonin Antagonists for anti-emesis indications
Ondansetron
- Prevention of chemo induced emesis
- nausea related to irradiation
- prevention and treatment of post op N/V
Interaction of Ondansetron
-fairly clean but be careful w/ other QT PROLONGERS
Zofran in pregnancy
reserved for refractory symptoms or hyperemesis gravid
**1st trimester usel inked to 2x increase risk of congenital heart defects and cleft palate
Antihistamine w/ no sedation
Fexofenadine < loratadine < cetirizine
Metformin MOA
Decreases hepatic glucose production (needs insulin to work**)
Metformin ADRs
- Metallic taste and GI upset (N/V/D) minimized by titrating
- No weight gain
- Lactic acidosis (major surgery, IV contrast)
Sulfonylureas (list) & MOA
1st gen = chlopromide (disulfiram like rxn)
2nd gen = glimepride, glipizide, glyburide=worst for hypoglycemia
MOA = stimulation of insulin secretion
Sulfonylureas ADR
weight gain and hypoglycemia
disulfiram-like reaction w/ ETOH possible (chlorpropamide)
TZDs list and MOA
- pioglitazone, rosiglitazone
- increase insulin sensitivity by acting on adipose, muscle and liver to increase glucose utilization and decrease glucose production need insulin to work
TZD ADR
-fluid retention
-weight gain
-heart failure = contraindication if NYHA III or IV
(others)
Levothyroxine products ADRs
- s&s of hyperthyroidism
- cardiac arrhtymias (afib, angina, ami)
- *decrease bone mineral density**
M2 and M3 muscarinic antagonists
Tolerodine (used for incontinence)
“primarily” M3 selective muscarinic antagonists
Oxybutynin (used for incontinence)
MOA & indications of incontinence therapeutics
- mediates bladder contractions = increase bladder capacity and decreases uninhibited contractions, and delayed desire to void
- Overactive bladder and urge incontinence
Incontinence Med Interactions & ADRs
- additive anticholinergic ADRs
- Anticholinergic effects (xerostomia most common)
Nonspecific alpha one antagonists
-zosins (improve voiding sumps)
Specific alpha one antagonists
-tamsulosin
ADRs of BPH therapeutics
selective = retrograde ejaculation
ED therapeutics
Sildenafil, vardenafil, vanafil (4.5hr 1/2 life)
Tadalfil (18hr 1/2 life)
—these are also used for pulmonary htn
ED therapeutics ADRs and interactions
- Nonselective alpha antagonists & nitrates
- ADR: headache, facial flushing, priapism
- sildenafil may cause bluish vision
Triptan drugs MOA
selective serotonin agonist for receptors in cranial arteries
Triptan interactions & ADRs
Avoid concurrent ergots AMI symptoms (careful in vascular patients)
Cholinesterase inhibitors
increase cholinergic transmission!
DONEPEZIL, rivastigmine, galantamine,»_space; tacrine=hepatotoxic
1st line for Parkinsons
- Levodopa plus carbidopa +/- entacopone
- dopamine agonists (prmipexole, ropinirole)
2nd Line for Parkinsons
- Anticholinergics (trihexyphenidyl, benztropine)
- Selective MAOB inhibitors ( selegiline, rasagiline)
- NMDA antagonists (amantidine)
Levodopa, Carbidopa, Entacapone MOA
- Levodopa = crosses BBB and becomes dopamine
- Carbidopa = blocks dopa decarboxylase (no metab in periph)
- Entacapone = blocks COMT
Phenytoin clinical uses
-prevention of seizures following head trauma/ neurosurgery
Phenytoin Interactions
potent CYP INDUCER
monitor blood levels
Common Phenytoin ADRs
- *gingival hyperplasia
- *teratogenicity
- rash
- vitamin D deficiency (osteomalacia)
Special Phenytoin ADRs
**nysatgmus leading to death because of high phenytoin levels
Clinical uses of Carbamazepine
- Treatment of bipolar
- Treatment of chronic pain syndromes
Carbamazepine Interactions
CYP INDUCER
Carbamazepine ADRs
- bone marrow suppression
- drug fever
- *rash (subtle to severe = SJS)
- Vitamin D defiicency (osteomalacia)
- Tearatogenicity***
Valproic Acid Clinical Uses
- Mania associated w/ bipolar
- Migraine prophylaxis
Valproic Acid ADRs
- Hepatotoxicity
* *Teratogenicity- NTD (avoid all together in women of childbearing age)
Fluoxetine and Paroxetine Interactions
- inhibitors of CYP2d6 (remember metoprolol)
* **can’t degrade the metoprolol
SSRI interaction
SSRI plus serotonergic drug
linezolid, St. Johns Wort
Common SSRI ADRs
- Sexual (delayed ejaculation, anorgasmia, decreased libido)
- Long QT syndrome (mostly larger doses of citalopram/escitalopram)
Special SSRI ADRs
- FDA warning about antidepressants and suicide
- Discontinuation Syndrome (N,V,D, HA, anxiety, anorexia, insomnia, flu-like illness) need to taper off
- Serotonin Syndrome (agitation, altered mental status, fever, resting tremor, myoclonic jerks, hyperreflexia, ataxia)
SNRIs =
- Venlafaxine
- Duloxetine (frequently used for pain)
SNRI ADRS
- similar to SSRIs
- Associated w/ dose dependent BP increase
TCAs =
- Amitriptyline
- Nortriptyline
TCA Interactions
- Anticholinergic agents
- QTc prolonging agents
- SSRI plus other sertonergic drugs (linezolid, st johns wort)
TCA ADRS
Common = anti-cholinergics Special = -Quinidine like cardiac effects **get baseline EKG** -Discontinuation syndrome **taper** -TCA overdaose
1st generation antipsychotics
- Haloperidol
- Chlorpromazine
2nd generation antipsychotics
- Risperidone
- Olanzapine
- Quetiapine
- Ziprasidone
- Aripiprazole
Antipsychotic Black Box warning
all have BB warning regarding mortality risk in dementia related psychosis and suicidality if indicated for depression
1st generation antipyschotic ADRs
- postural hypotension
- sedation
- EPS
- NMS think these + anesthesia
- QTc prolongation
- Increase prolactin (lactation, gynecomastia, amenorrhea)
2nd Generation antipsychotic ADRs
- weight gain
- diabetes
- hyperlipidemia
Clozapine ADRS
(2nd generation used for very refractory)
-granulocytopenia
Isotretinoin Precautions
2 forms of contraception
Need to monitor multiple labs
Need to be on registry
only prescribed by derm
Isotretinoin Interactions
- Avoid concomitant tetracycline (increased risk of pseudo tumor cerebri)
- Vaoid concomitant ETOH intake
Isotretinoin ADRs
- alopecia
- hepatitis/pancreatitis
- pseudotumor cerebri
- photosensitivity
- TERATOGENICITY
- psychosis/suicidal ideation