pharm Flashcards
What is the classification of Acetaminiphen?
Analgesic
Antipyretic (ALS)
Contraindication for acetaminophen? (4)
-hypersensitivity
-alcoholic hepatitis or liver dysfunction
-acute liver injury
-acetaminophen induced liver disease
Adult dose acetaminophen
500- 1 g
repeat after 4 hours to a
max dose of 3g in 24 hours
Acetaminophen Pediatric dose for under 30 kg
15mg/kg PO
Acetaminophen Pediatric dose for 30-50 kg:
500 mg PO
Acetaminophen Pediatric dose for over 50 kg
500-1g, to make 24 hour dose of 75 mg/kg (do not exceed 5 doses in 24 hrs in ped under 12 years)
Acetaminophen liquid formula?
80mg/ml
Mechanism of action of acetaminophen?
inhibits prostaglanding synthetase in the CNS reducing pain and pyrexia
Pharmocokinetics of Acetaminophen PO?
Onset:
Peak:
Duration:
onset: 30 min
Peak: 1-3 hours
duration: 4 hours
Pharmocokinetics of Acetaminophen IV?
Onset:
Peak:
Duration:
Onset: 15 minutes
peak: 1 hour
duration: 4-6 hours (analgesia) and over 6 hours of antipyresis
what is a toxic dose of acetaminophen
after a single dose of more than 7.5 g in adults of 150mg/kg pediatrics
Classification of ASA
Antiplatelet and antithrombotic
mechanism of action for ASA
it inhibits the formation of thromboxane A2, which is a potent platelet aggregator and vasoconstrictor. The platelet effects are irreversible and last for the life of the platelet (7-10 days)
Adenosine classification
antiarrhythmic and endogenous nucleoside
Indications for Adenosine
Conversion of SVT
Contraindicated (3 things)
1-Hypersensitivity
2- second/third degree heart block
3- sick sinus syndrome (print rhythm) in patients without artificial pacemaker
Adenosine dosage:
inital dose of 6 mg, followed by 12 mg rapid IV push
Mechanism of action for adenosine
slows the conduction of the electrical impulses through the AV node
Pharmocokinetics of adenosine
onset: rapid
peak: rapid
duration: 10 seconds or less
adverse effects of Adenosine
lightheadedness, flushing, SOB, chest pressure and nausea- usually self limiting
Warnings/precautions for Adenosine (2 things)
- rare cases of VF associated with adenosine in patients taking digoxin, or digoxin and verapamil- consider clinicall to discuss
-may worsem bronchoconstriction in pts with COPD/Asthma
Amiodarone classification
anti-arrhythmic
Amiodarone indications
1- VFIB
2- pulseless vtac
3- unstable vtac
4- recurrent VTAC following cardioversion
Amiodarone dosages for VFIB/VTAC
300 mg IV push, followed by 150 mg IV after 10 minutes if VF/pVT persists
Amiodarone dosage for unstable vtac and recurrant vtac following cardioversion?
150mg IV over 10 minutes
Amiodarone used in stable monomorphic WCT or symptomatic runs of WCT?
Yes, 150 mg over 10 minutes- BUT YOU MUST CALL CLINICALL