Part 13 Flashcards
What are some reasons patients are using complementary/alternative medicine? (3)
- Medical professionals do NOT relate to patients as individuals but rather as diseases
- biomedicine has not had success with many chronic illness
- high costs of medical care in the US
Top 3 conditions that prompt patients to use complemetnary/alternative therapies
- Back pain
- neck pain
- joint pain
The principle of homeopathic medicine
Like cures like
Osteopathic medicine
A type of western medicine that alongside traditional allopathic training are also trained to focus on the relationship of the body and its function, alignment, and physical manipulation
Naturopathic Medicine
An ND, different states have different requirements, seeks to restore and maintain optimum health by emphasizing natures inherent self healing process without physical manipulation
Traditional Chinese Medicine
Focused on the balanced flow of qi thru the body, and goal is to balance thru various herbal therapies such as acupuncture or tai chi to treat health problems
Ayurvedic medicine (where did it originate?)***
Originated in India, idea that there is universal interconnectedness among people and their health and the universe, uses herbs and supplements to treat diseases
Eye movement desensitization and reprocessing (EMDR) therapy
A type of mind body medicine using accelerated info processing method using alternating stimuli either eye movements or sound to desensitize and reprocess emotional wounds, helpful in traumatic processing and recovery
a1 adrenergic antagonists therapeutic uses (5)
- essential hypertension
- pheochromocytoma
- raynauds
- bph
- reversal of toxicity brought on by a1 agonists
a1 adrenergic antagonists ADR’s (5)
- orthostatic hypotension
- reflex tachycardia
- nasal congestion
- inhibition of ejaculation or impotence
- Na+ retention and increased blood volume (increase renin)
Prazosin (minipress) drug class and therapeutic uses (2)
- selective a1 blockade adrenergic antagonist
- produces vasodilation treating hypertension and BPH
Prazosin (minipress) ADR 1st dose effect
Refers to tendency for about 1% of patients to lose consciousness 30-60 min after receiving first dosage, to minimize effect initial dose must be small then gradually increased, or for administration of initial dose at bedtime
Tamsulosin (flomax)
selectively blocks a1 blockers on smooth muscle of bladder neck and prostatic capsule, only indicated for BPH and NOT effective at treating Htn
phentolamine (regitine) blocks ___ and ___ receptors and is often used in the IV treatment of ______
a1 and a2, pheochromocytoma
B adrenergic antagonists therapeutic uses (4)
(result primarily from blockading B1 receptors in heart)
- hypertension
- angina pectoris
- cardiac arrhythmias
- heart failure (cardioprotective by improving cardiac contractility)
B adrenergic antagonists therapeutic uses (4)
(result primarily from blockading B1 receptors in heart)
- hypertension
- angina pectoris
- cardiac arrhythmias
- heart failure (cardioprotective by improving cardiac contractility)
B1 blockade ADRs (4)
- bradycardia
- reduced cardiac output
- AV heart block
- rebound cardiac excitation
Rebound cardiac excitation
Refers to how long term use of B1 blockades can sensitize the heart to catecholamines, and abrupt cessation of it can result in anginal pain and ventricular arrhythmias (medication must be tapered off) - DO NOT SUDDENLY STOP BETA BLOCKERS
B2 blockade ADRs (3)
- bronchoconstriction
- inhibit glycogenolysis (hypoglycemia)
- CNS effects
3rd generation B adrenergic antagonist agents and 2 examples
- Agents that block a adrenergic receptors in addition to B receptors
- carvedilol, labetolol
High lipid solubility and the blood brain barrier
…allows for penetration of BBB easily
Propranol (inderal LA) drug class and therapuetic uses (4) and administration
-nonselective B adrenergic antagonist (B1 and B2)
- HTN
- Angina pectoris
- Cardiac arrhythmias
- stage fright (can easily cross BBB as highly lipid soluble)
- can also make people less racist.
Available PO or IV
To avoid Na+ retention and increased blood volume when a patient is on an a adrenergic antagonist, they are often also treeated with…
…a diuretic
2 categories of indirect acting adrenergic agents and what is the net result of these drugs?
- adrenergic neuron blocking agents (drugs that act on terminals of synaptic neurons to decrease norepi release)
- centrally acting antiadrenergic agents (drugs that act within CNS to reduce flow of impulses along sympathetic nerves)
-net result is reduction in stimulation of peripheral adrenergic receptors
Clonidine (catapres) drug class and mech of action
-CNS a2 adrenergic agonist
-Centrally acting antiadrenergic agent
whose effects result from stimulating a2 receptors in brain not in periphery, exerts inhibitory influence on regions of brain that regulate sympathetic activity resulting in reduction of sympathetic outflow to blood vessels and heart
Clonidine therapeutic uses (3)
- hypertension
- menopausal flushing
- migraine headache
Clonidine ADR’s (3)
- rebound hypertension (large increase in BP following abrupt withdrawal)
- drowsiness
- dry mouth
Bethanechol (urecholine) drug class and therapeutic uses (3)
-direct acting muscarinic agonist
- urinary retention
- GI paralysis
Bethanechol (urecholine) ADR’s (2)
- very few
- can worsen cardiovascular symptoms in hypotensive patients
- high doses abdominal cramping and involuntary defecation
Bethanechol (urecholine) contraindications (3)
- gastric ulcers
- intestinal obstruction
- recent surgery of bowel
Cevimeline (exovac) function
Derivative of Ach actions similar to bethanechol, relieves xerostomia by allowing and promoting salivation
Pilocarpine function
Topical therapy of glaucoma (outdated) or treatment of dry mouth from sjogren’s syndrome
Acetycholine usage pharmacologically
Restricted due to acetycholiesterase destruction, lacks sensitivity and can stimulate all muscarinic and nicotinic receptors but is also rapidly destroyed by cholinesterases
Symptoms of muscarinic agonist poisoning (6)
- profuse salivation
- lacrimation
- visula disturbances
- bronchospasm
- diarrhea
- bradycardia
Atropine (atropen) drug class and mech of action
- anticholinergic muscarinic antagonist
- Competes to cause blockage of muscarinic receptors, no effect itself but prevents activation of muscarinic receptor by endogenous Ach and at high doses nicotinic receptors as well
Atropine (atropen) therapuetic uses (4)
- preanasthetic meds
- opthalmic inducing mydriasis and parlysis of ciliary muscle
- can accelerate heart rate in bradycardia
- intestinal hypermotility reducing frequency of bowel movements and abdominal cramps
Atropine (atropen) ADR’s (4)
- dry mouth
- blurred vision and photophobia (paralysis of ciliary muscle focuses for far vision)
- elevation of intraocular pressure
- urinary retention
Scopolamine (hysoscine HBr) function
Muscarinic atnagonist like atropine but produces CNS sedation opposed to excitement and suppresses emesis and motion sickness
Neostigmine (prostigmin) mech of action
Binds of AchE but rxn takes place extremely slowly tying up AchE and thus leaving Ach levels higher
This allows for identical muscarinic responses compared to the muscarinic agonists
Neostigmine (prostigmin) therapeutic use and mech of treatment
- myasthenia gravis
- prevents inactivation of Ach thereby intensifying effect of Ach at motor end plates, provides symptomatic relief with small dosage titrated upward until optimal level of muscle functioning has been produced
Neostigmine (prostigmin ADR’s (3)
- excess salivation
- increased gastric secretion
- miosis
Cholinergic crisis
Excessive activity of acetycholine causing respiratoyr suppression and urination and defececation and possibly death
Treatment of cholinergic crisis (2)
- IV atropine
- mechanical ventilation
3 common cholinesterase inhibitors used in alzheimer’s disease
- donepezil
- rivastigmine
- galantamine
Myasthenia gravis pathophys
disease characterized by muscle weakness and predisposition to rapid fatigue, common see difficulty swallowing, ptosis, and severe trouble breathing due to paralysis of respiratory muscles due to autoimmune antibodies against nicotinic II receptors on skeletal muscle, results in muscle weakness
Myasthenia crisis
-patient may experience if inadequately medicated, characterized by extreme weakness caused by insufficient ach at the NMJ and will lead to death by paralysis of respiratory muscles unless cholinesterase inhibitor used
Determining cholinergic from myasthenia criss
- History of meds can provide diff diagnosis
- If inadequate, use ultra short acting cholinesterase agent and if symptoms alleviated then myasthenic, if intesnivides then cholinergic
what is the only direct oral anticoagulant approved for dvt prophylaxis in hospitalized patients?
Betrixaban
frequent repositioning for decubitus ulcers
minimum of every 2 hours
do noninfected decubital ulcers require antibiotics?
NO