Pharm Flashcards
What abx causes methemoglobinemia?
Prilocaine
What drugs can be used to tx HTN? Give examples
Diuretics such as high ceiling or loop acting: Furosemide
Beta blockers: Propanolol
Cardio selective beta blockers: Metoprolol atenolol
Alpha-1 blockers: prazosin
Centrally acting adrenergic: Methyldopa, clonidine
Neuronal blockers: Guanethidine (for severe HTN)
ACE inhibitors: Lisinopril captopril
Drugs to treat angina?
Nitroglycerin
Ca2+ channel blockers: verapamil propanolol
What treats ventricular arrhythmias?
Lidocaine
What treats supraventricular tachyarrhythmias and a-fib?
Quinidine
digitalis
Verapamil
What treats a-fib?
Verapamil, digitalis, quinidine
What treats congestive heart failure?
Glycosides such as digitalis and digoxin
ACE inhibitors such as captopril
How does nitroglycerin work?
Increase O2 supply to heart by a direct vasodilatory action on smooth muscle to the coronary arteries
How do Ca2+ channel blockers work?
Decrease O2 demand by reducing afterload by reducing peripheral resistance via vasodilation
For antihypertensive drugs, most have the ultimate effect of__?
Reducing peripheral resistance via vasodilation
How do diuretics work?
Decrease renal absorption of sodium=fluid loss and reduction of blood volume. This decreases the work the heart has to pump.
Examples of diuretics
Thiazides: Chlorothiazide
High-ceiling or loop acting: furosemide
Potassium sparing: spironolactone
Aspirin mechanism of action
Analgesic effect: Inhibits synthesis of prostaglandins
Antipyretic effect: Inhibits prostaglandin synth in hypothalamic temp regulation center
Bleeding time: Inhibits synthesis of thromboxane A2 preventing platelet synthesis
Therapeutic effects of aspirin?
Pain relief, anti-inflammatory, antipyretic, antiheumatic
Adverse/toxic effects of aspirin?
GI bleeding
tinnitus,nausea, vomiting, metabolic acidosis and more
How is acetaminophen different from aspirin?
Acetaminophen lacks anti-inflammatory activity, is hepatotoxic, and does not cause GI upset
Acetaminophen causes ___ toxicity, especially when combined with ___ in __grams/day
liver toxicity
alcohol
4grams/day
What drug should be avoided in a feverish child? What can it cause?
Aspirin
Reye’s syndrome
What is the drug of choice for a feverish child?
acetaminophen
What are the effects of morphine?
respiratory depression, euphoria, sedation, dysphoria, analgesia, and constipation and urinary retention
Signs of morphine overdose?
Miosis (pupil constriction/pin point pupils), coma, respiratory depression. Miosis is the most distinct.
Opioid overdose antidote?
Naloxone (narcan)
Examples of cholinergic drugs that are sometimes used to control salivary secretions?
Atropine
Scopolamine
Atropine and Scopolamine are what type of receptor blockers?
Competitive muscarinic receptor blockers
Atropine also blocks ____ resulting in ____
Vagal reflexive control of heart rate
tachycardia
What can be used to treat xerostomia?
Pilocarpine, methacholine, neostigmine etc
these are direct acting cholinergic agonists
Anticholinergic agents ___ salivation
reduce
Cholinergic agents __ salivation
increase
In the presence of an alpha blocker, epinephrine causes __.
decrease in BP
Beta BLOCKER causes __
decreased HR (B1) Bronchoconstriction (B2)
Drug to tx parkinsons?
Levadopa (type of dopamine that crosses the bbb easily)
Alpha and beta blockers are types of ___ drugs
adrenergic
What drug competitively blocks the action of norepinephrine at beta-adrenergic receptors?
Propanolol
Albuterol is what type of drug?
Beta-2 agonist
What drug best reverses the effects of benzos?
Flumazenil
Drug of choice for status epilepticus
diazepam (valium)
White area that disappears when pulling or stretching the mucosa
Leukodema
Epstein-barr virus can cause
oral hairy leukoplakia
__is seen in immunocompromised (commonly HIV) patients
oral hair leukoplakia
Wickham’s striae: interlacing white lines in what oral pathology?
Lichen planus (reticular pattern)
____ and lidocaine are contraindicated because it can keep lido in the blood longer and cause toxicity
propanolol
What abx can cause GI upset and pseudomonas colitis?
clindamycin
What abx is associated with aplastic anemia?
Chloramphenicol
What abx is associated with liver damage or hepatotoxicity?
tetracycline
___ and ___ abx’s cancel each other out due to opposing mechanisms of action
penicillin and tetracycline
Why is erythromycin responsible for numerous drug interactions that can be fatal?
Decreases cytochrome P-450 metabolism of other drugs
contractions of lateral pterygoid moves articular disk in which direction?
anterior and medially
What signs indicate severe CNS oxygen deprivation?
Dilated (medriasis) pupils with absence of light reflex
What drug is used to correct a condition of atropine poisoning evidence by rapid heart rate, dry mouth and GI inactivity?
Physostigmine
Tender swelling in the soft tissue of the submandibular triangle is most likely caused by__.
Lymphadenopathy
What is least helpful in determining the anatomical integrity of the tmj?
Pano films
Chronic osteomyelitis has ___ appearance
moth eaten
Therapeutic index indicates___
safetey
Optimal flap design for palatal tori removal?
“double-Y”
Which abx has been implicated in the vast majority of cases of oral contraceptive failure during abx use?
Rifampin
Most serious result of digoxin intoxication?
ventricular fibrillation
Definition of transparency
The depth of light penetration into the tooth
Definition of value
Lightness/darkness of color