Lilley Reading Flashcards
Adrenergics
Drugs that stimulate the sympathetic nerve fibers of the autonomic nervos system which use epinephrine or epinephrine-like substancees as neurotransmitters
Antagonist
A drug that exerts an action opposite of another drug
Anticholinergics (parasympatholytics)
Drugs that block the action of acetylcholine
Antihistamine
Substances capable of reducing the physiologic and pharmacologic effects of histamine H1 receptor blocker
Antitussive
A drug that reduces coughing
Corticosteroids
Any o the hormones secreted by the adrenal cortex, either in natural or synthetic. These drugs will influence or control CHO and protein metabolism, the maintenance of serum glucose levels, electrolyte or water balance, function of respiratory cardiac and skeletal muscle
Expectorants
drugs that increase the flow of fluid in the respiratory tract by reducing the viscocity of the snot so you cough it out
Histamine antagonist
compete for histamine receptors on cells
Nonsedating antihistamine
newer meds that work peripherally(doesnt cross blood-brain barrier of CNS) and block the actions of histamine
What is histamine involved in?
involed in nerve impulse transmission in CNS, dilates caps, contracts smooth muscles, gastric secretion, ^ HR
There are 2 types of histamine receptors, tell me what they are.
H1: Smooth muscle contraction, dilation of caps,
H2: raise HR, and raise gastric secretion
So what will a high amount of histamine do to the body?
It will create an allergic reaction by constriction of smooth muscle in stomach and lungs, increase body secretions, vasodilate and increase capillary permeability resulting in movement of fluids out of blood vessels and into tissue causing low bp and edema
Wht is the relationship of antihistamines and histamines?
Antihistamines compete with histamine in attaching to receptors on the cell. When antihistamine attaches it revents histamine from doing its thang
Antigens enter the body causing an allergic reaction what is released?
histamine and other stuff is released from mast cells and basophils
What is the most common indication for antihistamine administration?
nasal allergies, seasonal allergies