Exam 3 Flashcards

1
Q

xfFunctional Histamine Antagonists

A

Epinephrine
Cromolyn Sodium

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2
Q

First Generation Antihistamines

A

Diphenhydramine
Meclizine
Promethazine

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3
Q

Second Generation Antihistamines

A

Cetirizine
Fexofenadine

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4
Q

Decongestants

A

Phenylephrine

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5
Q

Antihistamine Drug General Mechanism

A

H1 Receptor Antagonist

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6
Q

Histamine Receptors

A

H1, 2, 3, 4
H1 Is the Most Clinically Relevant

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7
Q

Immune Cells That Release Histamine

A

Mast Cells in Tissues
Basophils in Blood

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8
Q

Mast Cell Priming

A

Ig E release from immune response binds to mast cells
Antigen binds to IgE upon subsequent exposure and causes mast cells to degranulate

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9
Q

GI Cells That Release Histamine

A

Enterochromaffin Like Cells or G Cells
Release histamine that acts on H2 receptors

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10
Q

Histamine Receptor Affinity

A

10 fold preference for H1

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11
Q

Three Components of Histamine Reaction

A

Vascular Smooth Muscle Dilation
Increased Vascular Permeability
Peripheral Sensory Nerve Excitation

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12
Q

General Role of Histamine in Asthma

A

Bronchiole hypersensitivity to histamine

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13
Q

Epinephrine alpha1 Receptor Activation

A

Vasoconstriction

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14
Q

Epinephrine beta2 Receptor Activation

A

Bronchodilation

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15
Q

Cromolyn Sodium Mechanism of Action

A

Inhibits lung mast cells release

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16
Q

Cromolyn Sodium Usage

A

Prophylactic use in asthma and hay fever

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17
Q

First Gen Antihistamine Adverse Effects

A

Enter the CNS
Anticholinergic Effects
GI Problems

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18
Q

Second Gen Antihistamine Adverse Effects

A

Mostly do not enter CNS
Less sedating than first gen
Less muscarinic action than first gen
More drug interactions through CYP 3A4 metabolism

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19
Q

First Gen Antihistamine Pharmacokinetic

A

Orally Available
Half life 4 to 6 hours

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20
Q

Second Gen Antihistamine Pharmacokinetics

A

Orally available
Half life 12 to 24 hours

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21
Q

Antihistamine Excretion

A

Urine
Feces for Fexofenadine

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22
Q

Antihistamine Therapeutic Usage

A

Relief of seasonal allergy symptoms
Best used prophylactically
Does not reduce edema once it has formed

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23
Q

Antihistamines for Use in Vestibular Disorders

A

Promethazine
Diphenhydramine
Meclizine

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24
Q

Antihistamines for Use as an Antiemetic

A

Promethazine

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25
Antihistamines for Use as a Sedative
Diphenhydramine Promethazine
26
Antihistamine Contraindications
Narrow angle glaucoma
27
Diphenhydramine Use
Allergic Rhinitis Dermatological Pain and Itching Insomnia Motion Sickness
28
Diphenhydramine Adverse Effects
Sedation Paradoxical Excitation in Children Reduced Lactation and ENTERS BREASTMILK Avoid in Narrow Angle Glaucoma
29
Promethazine Uses
Antiemetic Sedative
30
Promethazine Adverse Effects
Similar to other first gens Photosensitivity RESPIRATORY DEPRESSION IN CHILDREN TISSUE INJURY WITH INJECTION
31
Meclizine Uses
Vertigo Prevents motion sickness
32
Meclizine Adverse Effects
Sedation
33
First Pass Effect of Second Generation Antihistamines
Increased relative to first gens
34
Cetirizine Uses
Allergic Rhinitis Dermatologic Pain and Itch
35
Cetirizine Adverse Effects
Some sedation Weak antimuscarinic effects like dry mouth Drug interactions through CYP 3A4 metabolism
36
Fexofenadine Uses
Allergic Rhinitis Better prophylaxis for skin pain and itch
37
Fexofenadine Adverse Effects
NOT Sedating Dysmenorrhea Enters breast milk DO NOT TAKE WITH FRUIT JUICE because it inhibits OAT transport of drug
38
Phenylephrine Mechanism of Action
Alpha 1 Receptor Agonist
39
Phenylephrine Uses
Nasal decongestant Mydriatic Detumescence
40
Phenylephrine Adverse Effects
Reflex bradycardia Excitability Restlessness Cardiac irritation in overdose
41
Bronchodilator Agents
Albuterol Salmeterol Theophylline Ipratropium
42
Anti inflammatory Agents
Fluticasone Prednisone Montelukast Zileuton Cromolyn Omalizumab
43
Two Phases of Asthma
Early Phase of Acute Bronchoconstriction Late Phase Influx of Inflammatory Cells and a Second Wave of Mediator Release
44
Anatomical Feature of COPD
Destruction of alveolar spaces
45
Optimal Particle Size for Inhaled Agents
1 to 5 microns
46
Metered Dose Inhaler Drawbacks
Difficult to use Only 10% of drug reaches the lungs even if used correctly
47
Beta 2 Agonist Mechanism
Stimulate Beta 2 receptor on bronchiole smooth muscle which elevates cAMP and dilates smooth muscle overall
48
Epinephrine Specific Mechanism
Nonselective adrenergic agonist
49
Albuterol Specific Mechanism of Action
Short acting Beta agonist
50
Albuterol Usage
First line therapy to relieve asthma attack 1 to 5 minute onset and 4 hr duration Taken 10 to 20 minutes before excercise
51
Salmeterol Specific Mechanism of Action
Long acting beta agonist
52
Salmeterol Usage
Scheduled asthma prophylaxis ALWAYS used with glucocorticoids Lasts 10 to 12 hours
53
Mechanism of Salmeterol Extended Action
Lipophilic tail anchors drug in cell membrane
54
Can COPD patients take long acting Beta agonists alone?
YES! This is different than asthma treatment
55
Antimuscarinic Agents for Asthma Treatment
Ipratropium
56
Ipratropium Mechanism of Action
Blocks Muscarinic M3 receptor to prevent parasympathetic bronchoconstriction
57
Ipratropium Usage
Slower acting and less intense than Beta 2 Agonists Good in patients intolerant of Beta 2 Agonists Can be used in combination with Beta 2 Agonists
58
Methylxanthines
Theophylline
59
Theophylline Mechanism of Action
Inhibits Phosphodiesterase Inhibits Adenosine Receptors
60
Theophylline Usage
Taken orally Good for asthma and COPD prophylaxis
61
Theophylline Adverse Effects
Narrow Therapeutic Index Large Variability in Metabolism Drug Interactions
62
Theophylline Metabolism
Metabolized by CYP 1A2 Increased metabolism in infants and smokers
63
Anti Inflammatory Agents
Fluticasone
64
Fluticasone Mechanism of Action
Gene Related Bind to glucocorticoid receptors to inhibit inflammation Increases response to Beta 2 Agonists
65
Fluticasone Usage
First line therapy for chronic asthma prophylaxis
66
Advair Drug Combination
Salmeterol and Fluticasone
67
Fluticasone Adverse Effects
Oropharyngeal candidiasis Steroid issues with high prolonged dosage
68
Leukotriene Modifiers
Zileuton Montelukast
69
Zileuton Specific Mechanism of Action
Blocks 5 lipoxygenase to inhibit leukotriene synthesis
70
Montelukast Specific Mechanism of Action
LTD4 Leukotiene Receptor Antagonist
71
Leukotriene Modifier Usage
Alternatives to inhaled steroids Good in ASPIRIN SENSATIVE ASTHMA
72
Mast Cell Stabilizers
Cromolyn
73
Cromolyn Specific Mechanism of Action
Stabilize membrane of mast cells
74
Cromolyn Usage
Blocks BOTH early and late phase asthma
75
IgE Antagonists
Omalizumab
76
Omalizumab Specific Mechanism of Action
Monoclonal Antibody Against IgE Allergens then cannot bind to mast cells
77
Omalizumab Usage
SubQ Dosed based on degree of allergic response
78
Omalizumab Adverse Effects
Injection Site Reaction Viral Infections URIs Anaphylaxis
79
Only Muscarinic Receptor on the Heart
M2
80
M2 Receptor Response on the Heart
Decrease in heart rate, conduction velocity, and contractility
81
Neurotransmitter of Sweat Gland Stimulation
Acetylcholine, though STILL SYMPATHETIC!
82
Location of M3 Receptors on Blood Vessels
Endothelium
83
Action of M3 Vascular Endothelial Stimulation
Releases of Nitric Oxide, which relaxes smooth muscle
84
Receptor of Iris Sphincter Muscles
M3
85
Receptor of Iris Radial Muscles
Alpha 1
86
Mecamilamine Activity
Blocks nicotinic receptor in the postsynaptic ganglionic neuron
87
Mecamilamine Broad Effects
Reverts tissues activity to intrinsic tone Most resembles blocking muscarinic receptors
88
Mecamilamine Clinical Uses
Antihypertensive agent through peripheral vasodilation Tobacco smoking cessation Not used much anymore due to many side effects
89
Presynaptic Drugs
Atropine Cocaine Methyldopa Muscarine Nicotine Onabotulinumtoxin A Tubocurarine Tyramine
90
Rate Limiting Step of Acetylcholine Synthesis
Transport of choline into presynaptic neurons
91
Onabotulinumtoxin A Mechanism
Endocytosis into cholinergic nerves Inactivates SNAP 25 which prevents docking of acetylcholine vesicles to presynaptic neuron membrane Yields flaccid paralysis of muscles
92
Onabotulinumtoxin A Clinical Use
Relaxes muscle spasms Softens facial wrinkles Inactivates sweat glands Lasts 3 to 4 months
93
Onabotulinumtoxin A Administration
Injected directly into target muscle or gland
94
Onabotulinumtoxin A Adverse Effects
Breathing difficulties Muscle weakness Urinary Retention Pain Allergic Reaction
95
Location of M3 Receptors
Smooth muscle, glands, and endothelium
96
Muscarine General Function
Selectively activates all M subtypes
97
Atropine General Function
Blocks activation of all M subtypes
98
Nicotine General Function
High affinity agonist for N receptors on postsynaptic ganglionic neurons and the adrenal medulla Stimulation is followed my desensitization Low affinity agonist for N receptors on skeletal muscle
99
Prototype Antagonist of Skeletal Muscle N Receptors
D tubocurarine
100
D Tubocurarine Mechanism
Competitive inhibition of skeletal muscle N receptors Produces non depolarizing neuromuscular blockade
101
Speed of Acetylcholinesterase Activity
FAST
102
Butyrylcholinesterase Location
Plasma and liver
103
Butyrylcholinesterase Function
Metabolizes choline ester drugs Activity can be slower in some patients
104
Catecholamine Neurotransmitters
Dopamine Norepinephrine Epinephrine
105
Location of Dopamine Synthesis Termination
CNS Basal Ganglia Renal Vasculature
106
Location of Norepinephrine Synthesis Termination
Adrenergic neurons
107
Location of Epinephrine Synthesis Termination
Adrenal medulla
108
Presynaptic alpha 2 Receptor Action
Stimulated by norepinephrine to decrease secretion of norepinephrine NEGATIVE FEEDBACK
109
VMAT 2 Function
Actively transports catecholamines back into their storage vesicles
110
Mitochondrial Monoamine Oxidase Function
Degrades Catecholamines that are not stored in vesicles
111
Tyramine Action
Found in diet and stimulates norepinephrine release Metabolizes by monoamine oxidases in the liver
112
Tyramine Cellular Action
Displaces norepinephrine from storage vesicles Norepinephrine then leaves the cell backwards through its reuptake channel
113
Methyldopa Action
Alpha 2 Receptor Agonist Decreases sympathetic outflow from brainstem
114
Methyldopa Use
Occasionally used for hypertension of pregnancy
115
Methyldopa Adverse Effects
Sedation Dry Mouth Hemolytic Anemia in Long Term Use
116
Methyldopa Specific Mechanism of Action
Prodrug converted to an active from that negative feedbacks release of catecholamines
117
Beta 1 Adrenergic Receptor Mechanism
Gs which increases cAMP, then increases PKA, which opens Ca2+ channels Ultimately excitatory which increases smooth muscle contraction
118
Beta 2 Receptor General Function
Relaxation of smooth muscle
119
Atropine Mechanism of Action
Competitive antagonist of ALL M SUBTYPES
120
Atropine Low Dose Effects
Suppresses salivary and bronchial secretions
121
Atropine Low Dose Response
Mydriasis, blurred vision, and tachycardia
122
Atropine Medium Dose Response
Constipation and urinary retention
123
Atropine High Dose Response
Suppresses gastric acid secretion
124
Atropine CNS Effects
Mild excitation at low doses Hallucinations and delirium at high doses Decreased cognition in the elderly
125
Atropine Cardiac Effects
Tachycardia from SA node M2 blockade
126
Atropine Vascular Effects
NO EFFECT ON VASCULAR TONE Flushing reaction of unclear mechanism
127
Atropine Respiratory Effects
Dries secretions Dilated bronchioles
128
Atropine Uses
Dry secretions Reverse sinus bradycardia Induce mydriasis Relieve Muscarinic side effects of other drugs Antidote to nerve gas poisoning
129
Atropine Contraindications
BPH Narrow angle glaucoma
130
Atropine Drug Interactions
Antihistamines, antidepressants, antipsychotics and other drugs that have anticholinergic side effects
131
Atropine Antidote
Physostigmine
132
Scopolamine Main Use
Motion sickness antidote
133
Scopolamine Mechanism of Action
Blocks M3 receptors in inner ear
134
Ipratropium Bromide Use
Bronchodilator Positive charge does not let it cross membranes Administered by inhalation
135
Tropicamide Use
Ophthalmic solution dilates pupils Also causes cycloplegia
136
Tolterodine Usage
Treats urge incontinence
137
Tolterodine Mechanism of Action
Blocking effects of acetylcholine released during bladder filling
138
Cholinesterase Inhibitor Drugs
Neostigmine Donepezil Malathion Physostigmine Pralidoxime
139
Most Common General Effects of Acetylcholinesterase Inhibition
Increased muscarinic stimulation Increased response at neuromuscular junction
140
Muscarinic Receptors in the CNS
M1 and M3
141
Donepezil Use
Improves cognition in Alzheimer’s
142
Donepezil Mechanism of Action
Lipid soluble and crosses BBB Inhibits M receptors in the brain
143
Neostigmine Mechanism of Acetylcholinesterase Inhibition
Covalent but REVERSIBLE bonding at active site
144
Neostigmine Unique Effect
Can also act as a direct agonist of Nm nicotinic neuromuscular receptors
145
Neostigmine Pharmacokinetics
Cleared by butyrylcholinesterase Duration of about 2 hours DOES NOT CROSS BBB
146
Neostigmine Uses
Reverse competitive neuromuscular blockers Elevates acetylcholine at neuromuscular junction to treat myasthenia gravis
147
Neostigmine Adverse Effects
Nm receptors can become desensitized which causes neuromuscular blockade Excessive muscarinic stimulation
148
Physostigmine Usage
Antidote for atropine drugs because it CROSSES BBB
149
Organophosphate General Mechanism
Forms an IRREVERSIBLE covalent bond with Acetylcholinesterase
150
Malathion Pharmacokinetics
Absorbed over ALL ROUTES OF EXPOSURE Prodrug converted to toxic metabolite by mammalian and insect CYP complexes
151
Malathion Therapeutic Use
Topic treatment for head lice and ova
152
Pralidoxime General Mechanism of Action
Reactivates Acetylcholinesterase at neuromuscular junction by clearing off covalently bound substances Must be administered before irreversible bonding occurs
154
Cocaine Specific Mechanism of Action
Blocks norepinephrine reuptake by presynaptic nerves Blocks Na+ channels on sensory nerves
155
Monoamine Oxidase Function
Degrades catecholamines, tyramine, and histamine
156
COMT Function
Methylates catecholamines to clear them from circulation Found in the liver and kidneys
157
Cholinergic Agonists
Acetylcholine Bethanechol Pilocarpine Cevimeline
158
Cholinergic Antagonists
Atropine Scopolamine Ipratropium Bromide Tolterodine Tropicamide
159
Acetylcholine Pharmacokinetics
Permanent positive charge makes it unable to cross membranes Does not cross BBB Short duration of action
160
Acetylcholine Vascular Effects
Stimulates M3 receptors to cause VASODILATION
161
Acetylcholine Cardiac Effects
Reduces heart rate and contractility Slows SA AV nodal conduction
162
Acetylcholine Effects In Presence of Atropine
Increase of sympathetic effects from acetylcholine action at the ganglia
163
Acetylcholine Clinical Use
Ophthalmic and administered directly into anterior chamber To induce rapid and complete miosis Ciliary muscle contraction to induce aqueous humor outflow
164
Do esters penetrate the BBB?
NO!
165
Do alkaloids penetrate the BBB?
YES!
166
Prototype Choline Ester
Bethanechol
167
Bethanechol Location of Action
Bladder and GI M3 Receptors M3 SELECTIVE
168
Bethanechol Clinical Use
Relieves postoperative and postpartum urinary retention
169
Bethanechol Pharmacokinetics
More resistant to acetylcholinesterase and butyrylcholinesterase breakdown Still has a short half life
170
Prototype Choline Alkaloid
Pilocarpine
171
Pilocarpine Mechanism of Action
Stimulates all muscarinic subtypes
172
Pilocarpine Uses
Oral to treat severe dry mouth Eye drops for glaucoma
173
Other Choline Alkaloid
Cevimeline
174
Cevimeline Mechanism of Action
Selectively stimulates M1 and M3
175
Cevimeline Clinical Use
Same as pilocarpine with fewer side effects
176
Choline Drug Toxicity
Muscarinic effects such as sweating, hypotension, and GI effects
177
Adrenergic Agonists
Clonidine Dopamine Epinephrine Isoproterenol Norepinephrine Phenylephrine Terbutaline
178
Indirect or Mixed Acting Adrenergic Drugs
Amphetamine Ephedrine
179
Adrenergic Antagonists
Atenolol Propranolol Prazosin Tamsulosin
180
Catecholamine Drugs
Dopamine Norepinephrine Epinephrine
181
Catecholamine Drug Pharmacokinetics
Not orally effective so given parenterally or by inhalation Short duration of action DOES NOT CROSS BBB
182
Non Catecholamine Sympathomimetics
Phenylephrine Terbutaline
183
Non Catecholamine Sympathomimetics Pharmacokinetics
Orally effective Long duration of action Produce CNS effects
184
Relationship Between Selectivity and Dose
Inverse
185
Epinephrine Receptor Selectivity
Alpha 1 Alpha 2 Beta 1 Beta 2
186
Norepinephrine Receptor Selectivity
Alpha 1 Alpha 2 Beta 1
187
Phenylephrine Receptor Selectivity
Alpha 1
188
Isoprotenerol Receptor Selectivity
Beta 1 Beta 2
189
Terbutaline Receptor Selectivity
Beta 2
190
Alpha 1 Receptor Stimulation Clinical Applications
Vasoconstriction Hemostatis Nasal decongestion Prolong action of local anesthetics Elevation of blood pressure in hypotension Mydriasis without cycloplegia due to selectivity for radial muscle
191
Alpha 2 Receptor Stimulation Clinical Application
Central activation reduces sympathetic outflow to heart Reduces secretion of aqueous humor in the eye
192
Beta 1 Receptor Stimulation Clinical Applications
Cardiac stimulation Treatment of shock
193
Beta 2 Receptor Stimulation Clinical Applications
Dilation of bronchioles for asthma and COPD Relaxes uterine smooth muscle to stop premature labor
194
Epinephrine Routes of Administration
Parenteral Inhalation Intracardiac Ophthalmic
195
Vascular Effects of Epinephrine
Reduces cutaneous blood flow through alpha 1 stimulation Increased skeletal muscle blood flow at low doses through beta 2 stimulation Decreased skeletal muscle blood flow at high doses through alpha 1 stimulation
196
Adrenergic Receptors Type in Cutaneous Vasculature
Alpha 1
197
Adrenergic Receptor Type in Skeletal Muscle
More alpha 1 than beta 2
198
Epinephrine Receptor Affinity
Greater for beta 2
199
Epinephrine Effects on Coronary Flow
Releases nitric oxide that increases oxygenation of the heart
200
Epinephrine Effects on Renal Blood Flow
Constriction of renal arteries
201
Respiratory Effects of Epinephrine
Dilation of bronchial smooth muscle through beta 2 stimulation Frequent use yields tolerance due to downregulation of receptors
202
Epinephrine Adverse Effects
Hypertensive crisis Cardiac Arrhythmias Angina in patients with coronary artery disease Extravasation induced necrosis if IV line comes out
203
Epinephrine Drug Interactions
Tricyclics and MAOIs prolong cardiac effects of epinephrine General anesthetics sensitize the heart to catecholamines Alpha and beta blocker reduce anaphylactic efficacy of epinephrine
204
Norepinephrine Mechanism of Action
Similar to epinephrine but DOES NOT STIMULATE BETA 2
205
Norepinephrine Clinical Uses
Severe hypotensive states Preferred vasopressor for septic shock
206
Isoproterenol Mechanism of Action
Potent stimulation for beta 1 and beta 2
207
Isoproterenol Therapeutic Uses
AV block and cardiac arrest Bronchospasms during anesthesia
208
Dopamine Mechanism of Action
Stimulates D1 special dopamine receptor more than beta 1, and beta 1 more than alpha 1
209
Dopamine Low Dose Effect
D1 stimulation dilates renal arteries to keep kidney perfused D1 stimulation also dilates coronary arteries
210
Dopamine Medium Dose Effect
Beta 1 stimulation increase stroke volume with no increase in heart rate
211
Dopamine High Dose Effect
Alpha 1 stimulation reduces cardiac output by increasing cardiac afterload
212
Phenylephrine Mechanism of Action
VERY SELECTIVE for alpha 1
213
Phenylephrine Uses
Nasal decongestion Vasopressor agent Mydriatic without cycloplegia
214
Phenylephrine Adverse Effects
Reflex bradycardia Excitability Restlessness Hypertension Arrhythmias in overdose
215
Clonidine Mechanism of Action
VERY SELECTIVE for alpha 2 presynaptic autoreceptor Negative feedbacks norepinephrine release from presynaptic ganglionic neurons Unlike Methyldopa not a prodrug OVERALL decreases sympathetic outflow from brainstem
216
Clonidine Clinical Use
Severe pain ADHD Vasomotor symptoms of menopause
217
Terbutaline Mechanism of Action
VERY SELECTIVE for Beta 2
218
Terbutaline Uses
Suppresses premature labor by relaxing uterine smooth muscle
219
Terbutaline Adverse Effects
Reflex tachycardia Tremor Hyperglycemia
220
Ephedrine Mechanism of Action
Mixed nonselective adrenergic agonist Promotes release of norepinephrine Crosses BBB
221
Ephedrine Uses
Decongestant Reverses anesthesia induced hypotension
222
Ephedrine Adverse Effects
Hypertension Insomnia
223
Amphetamine Mechanism of Action
Promotes release of norepinephrine and dopamine Inhibits reuptake of dopamine and norepinephrine
224
Amphetamine Uses
ADHD Narcolepsy
225
Amphetamine Adverse Effects
Insomnia and appetite suppression Tolerance and physical dependence
226
Clinical Applications of Alpha Blockade
Hypertension Antidote for alpha 1 agonist overdose Benign Prostatic Hyperplasia Pheochromocytoma Reynaud’s Disease
227
Clinical Application of Beta 1 Blockade
Hypertension Angina and MI CHF and Cardiac Arrhythmia Hyperthyroidism Glaucoma Stage Fright Migraine Prophylaxis
228
Prazosin Mechanism
Selective alpha 1 antagonist Produces dilation of blood vessels Relaxes smooth muscle of the bladder neck and prostate capsule
229
Prazosin Uses
Hypertension
230
Prazosin Adverse Effects
First dose orthostatic hypotension Inhibits ejaculation Nasal congestion
231
Tamsulosin Mechanism
Selectively blocks alpha 1 receptors in the prostate and bladder Does not effect systemic blood pressure Reduces smooth muscle tone in prostate
232
Tamsulosin Uses
Shrinks prostate in combination with 5a reductase inhibitors
233
Tamsulosin Adverse Effects
Abnormal Ejaculations
234
Tamsulosin Drug Interactions
Can cause dangerous hypotension when taken with ED meds
235
Propranolol Mechanism
Blocks Both Beta 1 and Beta 2
236
Propranolol Cardiovascular Effects
Decreases HR and contractility which is enhanced with exercise Suppresses AV node conduction Initial BP increase through blockage of vascular smooth muscle beta 2 receptors Long term usage reduces blood pressure by action at the kidneys
237
Propranolol Renal Effects
Suppresses release of renin through beta 1 blockade
238
Propranolol Respiratory Effects
Promotes bronchoconstriction
239
Propranolol Metabolic Effects
Suppresses glycogenolysis in the liver
240
Propranolol Adverse Effects
Fatigue, lethargy, and exercise intolerance Cold extremities Sexual disfunction Bradycardia Rebound tachycardia with abrupt withdrawal
241
Propranolol Contraindications
Diabetes Can acutely worsen heart failure symptoms Asthma and COPD
242
Atenolol Mechanism of Action
Selective for beta 1 blockage at therapeutic dosage
243
Atenolol Uses
Hypertension and heart disease Less likely to cause beta 2 side effects
244
Partial Beta Receptor Agonist
Pindolol Useful to maintain resting heart rate
245
Choline Drug Contraindications
Asthma Peptic Ulcers Hyperthyroidism