Pharmacology Flashcards
Define Pharmacodynamics
The study of how a medication alters a function or process within the body
Define pharmacokinetics
The action of the body on a medication.
Endogenous chemicals
Produced from within the body
Exogenous chemicals
Produced outside the body
Agonist medications
Initiate or alter a cellular activity by attaching to receptor sites, prompting a cell response
Antagonist medications
Prevent endogenous or exogenous agonist chemicals from reaching cell receptor sites and initiating or altering a particular cellular activity.
Affinity
The ability of a medication to bind with a particular receptor site
LR
Other name
Hartmann
LR
Mechanism
Replace water and electrolytes
LR
Indicate
Hypovolemic shock
TKO line
Hypoperfusion
LR
Contra
Don’t use in pt w renal failure or heart failure
LR
Side affects
Rare
LR
Drug interactions
Few in emergency setting
LR
Adult dose
Hypovolemic shock- titrate to CTC response
Hypoperfusion- 20ml/kg over 15 min
LR
Pediatric dose
Hypovolemic shock- titrate to CTC response
Hypoperfusion- 20ml/kg over 15 min (neonate- 10ml/kg over 5-10 min)
LR
Duration
Short term therapy
0.9% Sodium Chloride
Other names
Normal Saline
NS
NS
Class
Isotonic crystalloid solution
NS
Mechanism
Replace water and electrolytes
LR
Class
Isotonic crystalloid sol
NS
Indication
Hypovolemia
TKO line
Heat problems
DKA
Fresh water drowning
NS
Contra
Do not use in pt with renal and heart failure
NS
Side effects
Rare
NS
Drug interactions
Few in emergency setting
NS
Adult and Ped dose
Situational
NS
Duration
Short term therapy
Nitroglycerin
Other names
Nitrostat
Nitrobid
Tridil
Nitro
Class
Vasodilator
Nitro
Mechanism
Relax the smooth muscle of the vessels, bronchial, uterine, and intestine
Dilate peripheral vessels
Decrease preload/ after load which decreases the myocardial ox demand
Nitro
Indication
Acute angina pectoris
Ischemic angina
HTN
Heart failure
Pulmonary edema
Nitro
Contra
Hypotension
Hypovolemia
ICH
Pericardial tamponade
Severe Brady or tachycardia
RV infarct
ED meds within 24 hours
Nitro
Side effects
Headache
Dizziness
Weakness
Reflex tachycardia
Syncope
Hypotension
N/v
Dry mouth
Muscle twitch
Diaphoresis
Nitro
Drug interactions
Additive effect with other vasodilation meds
Incompatible with other IV drugs
Nitro
Adult dose
0.4 SL q 3-5 min up to 3 doses
IV infusion: begin at 10mcg/min, increase by 10 mcg q 3-5 min. Titrate prn up to 200mcg/min
Nitro
Ped doses
Not recommended