Questão 1
Questão
1. MUSCLE RELAXANTS: True or false: guaifenesin selectively depresses transmission at internuncial neurons in the spinal cord, brainstem, and subcortical areas
Questão 2
Questão
Which is not an effect of guaifenesin?
Responda
-
Depresses CNS giving sedation and muscle relaxation
-
Decrease BP which then returns to normal
-
High doses can cause respiratory depression
-
Analgesia
Questão 3
Questão
Which of the following is false regarding guaifenesin?
Responda
-
It has hepatic metabolism to a glucuronide and is excreted in urine
-
You should avoid using it with physostigmine
-
It lasts longer in female ponies than males
-
It can cause hemolysis in cows
Questão 4
Questão
Which muscle relaxant requires artificial ventilation with use?
Responda
-
Guaifenesin
-
Neuromuscular blockers
-
That’s it…
Questão 5
Questão
Which type of neuromuscular block are agonists at the ACh receptor?
Responda
-
Depolarizing
-
Non-depolarizing
Questão 6
Questão
Which non-depolarizing neuromuscular blockers are incorrectly matched with their duration
Responda
-
Mivacurium—short
-
Tubocurarine, doxacurium, pancuronium, pipecuronium—long
-
Atracurium, rocurium, vecuronium—intermediate
-
All of the above are correct!
Questão 7
Questão
Which of the following causes initial muscle fasciculation?
Questão 8
Questão
Which of the following are competitive antagonists at the ACh nicotinic receptor?
Questão 9
Questão
Which of the following is not a depolarizing neuromuscular blocker?
Responda
-
Decamethonium
-
Suxamethonium
-
Mivacurium
Questão 10
Questão
On which of the following can you use anticholinesterase drugs to remove the effect?
Questão 11
Questão
True or false: the amount of fasciculation correlates with the post-operative muscle pain
Questão 12
Questão
Which of the following is not an effect of suxamethonium?
Questão 13
Questão
Which of the following does not influence the effect of muscle relaxants?
Responda
-
Other neuromuscular agents
-
Cholinesterase inhibitors
-
Aminoglycoside antibiotics
-
None of the above
Questão 14
Questão
Which of the following is the most sensitive to neuromuscular blockers?
Questão 15
Questão
In which species do you most commonly use neuromuscular blockers?
Responda
-
Pigs and cats
-
Dogs and horses
-
Cattle and sheep
-
Horses and cats
Questão 16
Questão
HEMOSTATIC AND ANTICOAGULANTS: Which of the following hemostatics can cause extensive intravascular clotting when administered intravenously?
Responda
-
Fibrinogen
-
Thromboplastin
-
Thrombin
-
Fibrin
Questão 17
Questão
What’s a good characteristic of a topical hemostatic?
Responda
-
Minimal tissue reactivity
-
Easy to sterilize and handle
-
Consist of either thrombin or collagen
-
All of the above
Questão 18
Questão
Which is used in measurement of prothrombin time during anticoagulant therapy?
Responda
-
Fibrinogen
-
Thromboplastin
-
Thrombin
-
Fibrin
Questão 19
Questão
Which topical hemostatic converts endogenous fibrinogen to fibrin for clot formation?
Responda
-
Fibrinogen
-
Thromboplastin
-
Thrombin
-
Fibrin
Questão 20
Questão
Which topical hemostatic can be used for bleeding from denuded mucous membranes, as an adhesive in skin grafts, and for massive blood loss?
Responda
-
Fibrinogen
-
Thromboplastin
-
Thrombin
-
Fibrin
Questão 21
Questão
Which topical hemostatic is used for bleeding from parenchymatous tissue, cancellous bone, dental sockets, laryngeal/nasal surgery, reconstructive surgery, and as an adhesive agent for fixation of skin grafts?
Responda
-
Fibrinogen
-
Thromboplastin
-
Thrombin
-
Fibrin
Questão 22
Questão
Is fibrin foam soluble?
Questão 23
Questão
What do you use absorbable gelatin sponge/gelfoam for?
Responda
-
Oozing from the surface area
-
Massive blood loss
-
Capillary/venous bleeding
-
Surgery of the liver and spleen
Questão 24
Questão
Which of the following should only be used temporarily because otherwise you’d get fractures and cysts?
Questão 25
Questão
Which are clinical uses of microcrystalline collagen?
Responda
-
Clotting factor deficiencies
-
Thrombocytopenia
-
Surgery of the liver and spleen
-
Clotting factor deficiencies and Thrombocytopenia
-
Clotting factor deficiencies and Surgery of the liver and spleen
-
Thrombocytopenia and Surgery of the liver and spleen
Questão 26
Questão
Which topical hemostatic produces immediate vasoconstriction and controls bleeding from small vessels?
Questão 27
Questão
What’s the problem with high concentrations of styptics?
Questão 28
Questão
Which systemic hemostatic is used for emergency treatment of acute hemorrhagic syndromes with deficiency of clotting factors/platelets?
Responda
-
Vitamin K
-
Blood
-
Desmopressin acetate
-
Protamine sulfate
Questão 29
Questão
Which systemic hemostatic releases stored vWf from endothelial cell and macrophages and controls capillary bleeding from wounds?
Responda
-
Vitamin K
-
Blood
-
Desmopressin acetate
-
Protamine sulfate
Questão 30
Questão
Which systemic hemostatic is made from fish sperm?
Responda
-
Vitamin K
-
Blood
-
Desmopressin acetate
-
Protamine sulfate
Questão 31
Questão
Which systemic hemostatic is used to antagonize heparin-induced hemorrhagic action (since it’s basic and combines with the acidic heparin to prevent it from acting as an anticoagulant)?
Responda
-
Vitamin K
-
Blood
-
Desmopressin acetate
-
Protamine sulfate
Questão 32
Questão
Which systemic hemostatic aids in the production of clotting factors II, VII, IX, and X and should not be given IM or IV?
Responda
-
Vitamin K
-
Blood
-
Desmopressin acetate
-
Protamine sulfate
Questão 33
Questão
Repeated administration of which drug reduces its effectiveness?
Responda
-
Vitamin K
-
Blood
-
Desmopressin acetate
-
Protamine sulfate
Questão 34
Questão
Which anticoagulant should you not use for laboratory diagnostic purposes?
Responda
-
Sodium oxalate
-
Acid citrate dextrose
-
Sodium citrate
-
Edetate disodium
Questão 35
Questão
Which is not part of the mechanism of heparin?
Responda
-
Binds reversibly to antithrombin III to produce conformational changes to it, thereby inhibiting thrombin and activated factor Xa
-
Binds to endothelial walls, imparts negative charge, inhibits platelet adhesion and aggregation
-
Inhibits hepatic synthesis of prothrombin and factors II, VII, IX, and X
-
Increases plasminogen activator and tissue factor inhibitor
Questão 36
Questão
Which of these describes the action of heparin?
Responda
-
Antithrombotic
-
Anticoagulatory
-
Neither
-
Both
Questão 37
Questão
Which of the following statements is false regarding heparin?
Responda
-
It’s used to prevent venous thrombosis and pulmonary embolism, and to treat thromboemboli, as well as to treat DIC and to decrease risk factors in heartworm
adulticide treatment
-
It prevents serosal post-operative adhesions
-
It’s metabolized by the liver and reticulo endothelial system
-
Its antidotes are protamine and fresh blood
Questão 38
Questão
Which of the following is false regarding vitamin K antagonists?
Responda
-
It is stored in adipose tissue
-
Undergoes metabolism in the liver and is excreted in urine
-
It’s used for prophylaxis and treatment of venous thrombosis
-
Its side effect is hemorrhage
Questão 39
Questão
Which of the following is false regarding fibrinolytic agents?
Responda
-
Streptokinase can cause systemic fibrinolysis
-
Tissue plasminogen activator is used for lysis of aortic thromboemboli in cats
-
Fibrinolysin is an activator of plasminogen
-
Urokinase is isolated from pee and prevents serosal post-operative adhesions in dogs
Questão 40
Questão
Which of the following irreversibly binds COX in order to inhibit thromboxane A2 and prostaglandins?
Responda
-
Aspirin
-
Clopidogrel
-
Dipyrimadole
-
Ticlopridine
Questão 41
Questão
Which of the following inhibits phosphodiesterase, increasing cAMP levels in platelets, which inhibits aggregation?
Responda
-
Aspirin
-
Clopidogrel
-
Dipyrimadole
-
Ticlopidine
Questão 42
Questão
Which of the following is a P2Y12 receptor inhibitor, resulting in more cAMP and less aggregation of platelets?
Responda
-
Aspirin
-
Dipyrimadole
-
Ticlopidine
Questão 43
Questão
ANTICONVULSANTS: True or false: seizures are associated with episodic high frequency discharge of impulses by a group of neurons
Questão 44
Questão
Which of the following neurotransmitters is not involved in epileptogenesis?
Responda
-
Glutamate
-
Aspartate
-
Glycine
-
GABA
Questão 45
Questão
Which of the following is a problem associated with seizures?
Questão 46
Questão
Which is not a drug used in emergency treatment of seizures that stimulates GABA?
Responda
-
Phenytoin
-
Barbiturates
-
Benzodiazepines
-
Valproate
Questão 47
Questão
Which of the following drugs is mismatched with its mechanism of action?
Responda
-
Carbamazepine—inhibition of Na channels
-
Zonisamide—inhibition of Ca channels
-
Propofol—inhibition of Ca channels
-
Phenytoin—inhibition of Na channels
Questão 48
Questão
Which of the following drugs is a GABA agonist?
Responda
-
Zonisamide
-
Carbemazepine
-
Lamotrigrine
-
Etomidate
Questão 49
Questão
True or false: benzodiazepines decrease frequency of opening of GABA receptors.
Questão 50
Questão
Which route should you not use for lorazepam or midazolam?
Responda
-
IV
-
IM
-
Intranasal
-
Intrarectal
Questão 51
Questão
Which benzodiazepine inhibits T-type calcium channels?
Responda
-
Diazepam
-
Clonazepam
-
Midazolam
-
Lorazepam
Questão 52
Questão
What is not a side effect of barbiturates?
Responda
-
Hepatotoxicity
-
Autoinduction of CYP450
-
Sedation
-
Anorexia
Questão 53
Questão
True or false: barbiturates enhance GABA A by increasing the frequency of opening of the chloride channel.
Questão 54
Questão
Which of the following drugs works by competing with chloride, hyperpolarizing the neuronal membranes?
Responda
-
Gabapentin
-
Midazolam
-
Potassium bromide
-
Phenobarbital
Questão 55
Questão
Which of the following can potassium bromide be used for?
Responda
-
Only emergencies
-
Only add on
-
Both
-
Neither
Questão 56
Questão
Which is not a mechanism of action of felbamate?
Responda
-
Blocking NMDA-mediated neuronal excitation
-
Potentiation of GABA-mediated neuronal inhibition
-
Inhibition of voltage sensitive neuronal Cl channels
-
Protects neurons from hypoxic or ischemic damage
Questão 57
Questão
True or false: felbamate is well absorbed from oral administration and has a wide safety margin
Questão 58
Questão
Which of the following drugs has absorption depending on an L-amino acid carrier, making the process saturable?
Responda
-
Levetiracetam
-
Gabapentin
-
Felbamate
-
Phenobarbital
Questão 59
Questão
True or false: pregabalin has a long half life
Questão 60
Questão
Which of the following drugs works by binding to SV2A?
Responda
-
Zonisamide
-
Gabapentin
-
Felbamate
-
Levetiracetam
Questão 61
Questão
Which of the following drugs is partially excreted unchanged and partly glucuronidated?
Responda
-
Zonisamide
-
Gabapentin
-
Felbamate
-
Levetiracetam
Questão 62
Questão
Which of the following drugs weakly inhibits GABA transaminase and has some effect on sodium and T-type calcium channels?
Responda
-
Phenytoin
-
Valproate
-
Vigabatrin
-
Carbamazepine
Questão 63
Questão
Which of the following drugs is metabolized by mixed function oxidases and is well absorbed orally?
Responda
-
Phenytoin
-
Valproate
-
Vigabatrin
-
Carbamazepine
Questão 64
Questão
Which of the following drugs inhibits GABA transaminase by forming an irreversible covalent bond, resulting in increased GABA?
Responda
-
Phenytoin
-
Valproate
-
Vigabatrin
-
Carbamazepine
Questão 65
Questão
Which of the following is a tricyclic antidepressant with hepatic metabolism that is a strong inducer of hepatic enzymes?
Responda
-
Phenytoin
-
Valproate
-
Vigabatrin
-
Carbamazepine
Questão 66
Questão
BEHAVIOR MODIFIERS: Which of the following is not an indication of psychotropic drugs in vetmed?
Questão 67
Questão
Which of the following is false regarding MAOIs?
Responda
-
MAOIs inhibit the breakdown of serotonin, norepinephrine, and dopamine
-
MAO-A has only central effects
-
MAO-B has only central effects
-
MAO-B’s substrates are norepinephrine and dopamine
-
MAO-A’s substrates are serotonin, norepinephrine, and epinephrine
Questão 68
Questão
Which of the following is not associated with serotonin syndrome?
Responda
-
Hypertension
-
Hyperthermia
-
Metabolic alkalosis
-
Rhabdomyolysis
Questão 69
Questão
Which of the following is an example of an MAOI?
Responda
-
Selegiline
-
Amitriptyline
-
Clomipramine
-
Fluoxetine
-
Alprazolam
Questão 70
Questão
Which of the following is not an adverse effect of selegiline?
Responda
-
Hyperactivity
-
Stereotypic behavior
-
Phobias
Questão 71
Questão
Which of the following drugs is incorrectly matched with its indication?
Responda
-
Selegiline—dementia in dogs
-
Clomipramine—separation anxiety
-
Fluoxetine—aggression in male dogs
-
FFP—urine spraying in cats
Questão 72
Questão
7. True or false: SNRIs are metabolized via CYP450
Questão 73
Questão
What isn’t an adverse effect of SNRIs?
Responda
-
Hypertension
-
Tachycardia
-
Arrhythmia
-
Salivation
-
Constipation
Questão 74
Questão
Which of the following is true about SNRIs according to slide 11 (e.g. generally)?
Responda
-
They have antihistamine effects
-
They have anticholinergic effects
-
They’re alpha-1 antagonists
-
These are all true!
Questão 75
Questão
Which of the following is not an indication for SNRI use in dogs?
Questão 76
Questão
Which SNRI has analgesic properties?
Responda
-
Amitriptyline
-
Imipramine
-
Clomipramine
Questão 77
Questão
Which SNRI has equal effects on serotonin and norepinephrine?
Responda
-
Amitriptyline
-
Imipramine
-
Clomipramine
Questão 78
Questão
Which SNRI is used for separation anxiety and canine compulsive disorders?
Responda
-
Amitriptyline
-
Imipramine
-
Clomipramine
Questão 79
Questão
Which is an indication for SSRIs in cats?
Responda
-
Separation anxiety
-
Impulse aggression
-
Compulsive behavior
-
Dominance
Questão 80
Questão
Which is not an adverse effect of fluoxetine?
Responda
-
GI effects
-
Lethargy
-
Depression
-
Polyphagia
Questão 81
Questão
True or false: the metabolites of benzodiazepines are not active.
Questão 82
Questão
True or false: in a dopaminergic synapse the enzyme beta-dopamine hydroxyls is missing
Questão 83
Questão
Neuroleptics block which of the following?
Responda
-
ACH-M receptors
-
Alpha-adenoreceptors
-
Histamine receptors
-
Serotonin receptors
-
All of the above
Questão 84
Questão
Which of the following is an incorrect example of receptor cross talk?
Responda
-
Adrenergic a2-receptor stimulation increases the release of dopamine and serotonin
-
Adrenergic B-receptor stimulation inhibits release of serotonin
-
Dopamine down-regulates serotonin auto-receptors
-
All of the above are true!
Questão 85
Questão
True or false: progestins and estrogen suppress the excitatory effects of glutamate.
Questão 86
Questão
True or false: it’s totally fine to combine MAOIs and TCAs.
Questão 87
Questão
SEDATIVES AND TRANQUILLIZERS: Which is not a therapeutic target for these?
Questão 88
Questão
Which is not a mechanism of action of phenothiazines?
Responda
-
Block D2 receptors in the CNS
-
Block alpha adrenoceptors in the CNS
-
Block D receptors in the periphery
-
Block alpha receptors in the periphery
Questão 89
Questão
What is not an effect of phenothiazines?
Responda
-
CNS depression
-
Peripheral vasodilation
-
Good muscle relaxation
-
Analgesia
Questão 90
Questão
True or false: phenothiazines have extensive hepatic metabolism and metabolites are excreted in bile
Questão 91
Questão
Which of the following is false?
Responda
-
You should use chlorpromazine in horses
-
Some boxers have an exaggerated reaction to acepromazine
-
Acepromazine prevents occurrence of halothane induced malignant hyperthermia in pigs
-
Phenothiazines can be used to treat feline lower urinary tract disease
Questão 92
Questão
Which is false about the mechanism of action of benzodiazepines?
Responda
-
They bind to and activate the benzodiazepine binding site on the GABA-A receptor
-
They decrease the opening frequency of the Cl channel
-
They hyperpolarize the post-synaptic membrane
-
All of the above are true
Questão 93
Questão
Which GABA receptor subunit, when mutated, prevents binding of volatile and injectable agents?
Questão 94
Questão
Which of the following is not an effect of benzodiazepines?
Responda
-
Dose dependent muscle relaxation
-
Biphasic cardiovascular response
-
Mild respiratory repression
-
Dose dependent CNS depression
-
Analgesia
Questão 95
Questão
True or false: benzodiazepines are reduced or glucuronidated and either excreted via the kidneys (diazepam) or both in the kidney and bile (lorazepam)
Questão 96
Questão
Which benzodiazepine has active metabolites?
Responda
-
Midazolam
-
Zolazepam
-
Diazepam
-
Lorazepam
Questão 97
Questão
In which patients should you not use benzodiazepines?
Responda
-
Those with fear-induced aggression
-
Those with hypersensitivity to benzodiazepines
-
Those with hepatic dysfunction
-
All of the above
Questão 98
Questão
True or false: flumazenil is a benzodiazepine antagonist that has a high affinity for the BZ-binding sites.
Questão 99
Questão
Which of the following is false regarding a2 agonists?
Responda
-
They target GPCRs Gi and Go
-
Their target has 7 transmembrane domains
-
A2B is the most important type of receptor for analgesia and anesthesia
-
They’re used for sedation, chemical restraint, and analgesia, as well as for emesis
in cats
Questão 100
Questão
Which of the following is not an effect of a2 agonists?
Responda
-
Depressive on the CNS, reduces blood flow and O2 consumption
-
Mild, dose dependent respiratory depression
-
Poor muscle relaxation
-
Analgesia
-
Biphasic cardiovascular response
Questão 101
Questão
Which of the following is false regarding a2 agonists?
Responda
-
It can be administered parenterally, orally, or epidurally
-
It’s synergistic with opioids, local anesthetics, and NMDA antagonists
-
Medetomidine has a strong correlation between the effect and plasma concentration
-
Bioavailability of medetomidine is 100% in dogs and cats
Questão 102
Questão
In which animal can a2 agonists cause hypercapnia?
Questão 103
Questão
In which animal does xylazine cause activation of pulmonary intravascular macrophages, resulting in acute lung injury?
Questão 104
Questão
Which animal has an a2D receptor, making them more susceptible to the effects of sedatives?
Questão 105
Questão
In whom can you use a2 agonists?
Questão 106
Questão
Which of the following regarding a2 antagonists is true?
Responda
-
They’re competitive antagonists at the a1 receptor
-
They have varying effects on the a2 receptor
-
They have varying effects at the a1 receptor
-
All of the above are false
Questão 107
Questão
Which of the following is a non-selective a-adrenergic antagonist?
Responda
-
Tolazoline
-
Yohimbine
-
Atipamezole
-
Romifidine
Questão 108
Questão
True or false: the answer to the previous question also has histaminergic and cholinergic effects
Questão 109
Questão
Butyrophenone derivatives work via all of the following except:
Responda
-
Antagonism of the D2 receptor
-
Antagonism of the a2 receptor
-
Some antihistaminergic properties
-
All of the above are true
Questão 110
Questão
Which of the following is not an effect of butyrophenones?
Questão 111
Questão
ANESTHESIA & ANALGESIA: Which is not a post-synaptic target for these drugs?
Questão 112
Questão
Which receptor type is incorrectly matched with its number of subunits?
Questão 113
Questão
Which ion blocks NMDA receptors?
Questão 114
Questão
Activation of glutamate receptors requires the binding of which of the following?
Responda
-
Glutamate
-
Glycine
-
Both
-
Neither
Questão 115
Questão
Where do almost all anesthetics potentiate the action of GABA?
Responda
-
GABA-A
-
GABA-B
-
GABA-C
-
Somewhere else entirely
Questão 116
Questão
Which ion passes through the channel in the GABA receptors?
Questão 117
Questão
Generally how many subunits are present in GABA receptors?
Questão 118
Questão
True or false: tyrosine hydroxylase (TH) is the rate limiting step in dopamine neurotransmission
Questão 119
Questão
Which of the following dopamine receptors increase adenylate cyclase activity (thereby increasing cAMP)?
Questão 120
Questão
True or false: presynaptic receptors are the clinically relevant ones in the a2 adrenergic synapse (on the slide from the review…)
Questão 121
Questão
HISTAMINE & SEROTONIN: Which is false regarding autacoids?
Responda
-
They’re local hormones
-
They’re long-lived
-
They include histamine, serotonin, nitric oxide
-
They include angiotensin and eicosanoids
Questão 122
Questão
Which of the following is not mediated by H1?
Responda
-
Inflammation
-
Allergies
-
Gastric acid secretion
-
Anaphylaxis
Questão 123
Questão
Which of the following is an H3 effect?
Responda
-
Smooth muscle contraction
-
Relaxing small arterioles
-
Gastric acid secretion
-
Modulating neurotransmitter release in the CNS
Questão 124
Questão
Where do you not have H4 receptors?
Responda
-
Dendritic cells
-
Mast cells
-
Basophils
-
Eosinophils
Questão 125
Questão
Which of the following is false regarding the production of histamine?
Responda
-
You start with histidine
-
Histidine decarboxylase is the enzyme
-
The group removed to form histamine is CO2
-
All of the above are true!
Questão 126
Questão
Which of the following is true regarding histamine stores?
Responda
-
The mast cell pool synthesizes histamine more quickly than the non-mast cell pool
-
The non-mast cell pool occurs in basophils
-
The mast cell pool continuously synthesizes and releases histamine
-
The mast cell pool plays a key role in drug reactions
Questão 127
Questão
In order to release histamine from mast cells, the cells must become more permeable to which ion?
Questão 128
Questão
Which of the following is not a role of histamine?
Responda
-
Stimulate sensory nerve endings
-
Relax arterioles
-
Decrease capillary permeability
-
All of the above are roles of histamine!
Questão 129
Questão
Which is not an effect of histamine on the cardiovascular system?
Responda
-
Dilation of terminal arterioles
-
Decrease in blood pressure briefly
-
Dilation of large arteries and veins
-
Edema from increased capillary permeability
Questão 130
Questão
Which of the following is true regarding histamine-mediated vasodilation?
Questão 131
Questão
In which group of animals does histamine relax bronchial smooth muscle?
Responda
-
Rabbits and dogs
-
Calves and pigs
-
Cats and sheep
-
Humans and guinea pigs
Questão 132
Questão
Which other smooth muscles are contracted by histamine?
Responda
-
Intestinal muscle
-
Uterine smooth muscle
-
Neither
-
Both
Questão 133
Questão
Which of the following is true?
Responda
-
H1 is Gi while H2 is Gq
-
H1 is Gq while H2 is Gs
-
H1 is Gs, H2 is Gq
-
H1 is Gs, H2 is Gi
Questão 134
Questão
Which of these other receptors has the same pathway as endothelial H1 receptors?
Questão 135
Questão
True or false: histamine is poorly absorbed from parenteral administration
Questão 136
Questão
Which is NOT part of the the metabolism of histamine:
Responda
-
Methylation and oxidation
-
Histamine N-methyltransferase enzyme acts on histamine to form methyl histamine (further acted upon by MAO)
-
Histaminase enzyme cleaves histamine into inactive metabolites
-
All of them are part of histamine metabolism
Questão 137
Questão
Which of the following is false regarding histamine agonists?
Responda
-
Histamine phosphate is used to test for achlorhydria
-
So is betazole
-
Betazole is more selective
-
Histamine phosphate is more selective
Questão 138
Questão
Which of the following will give you CNS sedation?
Responda
-
Cetirizine
-
Trimeprazine
-
Loratadine
-
Fexofenadine
Questão 139
Questão
Which of the following lacks antimuscarinic effects?
Responda
-
Chlorpheniramine
-
Clemastine
-
Dimenhydrinate
-
Desloratidine
Questão 140
Questão
Which of the following is false regarding the pharmacokinetics of antihistamines?
Responda
-
You can use them IV in emergencies (acute anaphylaxis)
-
You can use them topically
-
They don’t bind to plasma proteins
-
They’re excreted in urine and feces
Questão 141
Questão
Which is not a pharmacologic effect of antihistamines?
Responda
-
Vasodilation
-
Relaxation of bronchiolar smooth muscle
-
Relaxation of intestinal smooth muscle
-
Local anesthetic action
-
Anti-inflammatory response
-
Inhibits arterial hypertension
-
Anti-motion sickness
Questão 142
Questão
What is not a therapeutic use of antihistamines in bovines?
Responda
-
Bloat
-
Acetonemia
-
Mastitis
-
Gut edema
-
Metritis
-
Pregnancy toxemia
-
Pulmonary emphysema
-
Retained placenta
Questão 143
Questão
Which of the following is not a therapeutic use of antihistamines?
Responda
-
Myoglobinuria
-
Periodic opthalmia
-
Gastric stasis
-
Laminitis
Questão 144
Questão
Which antihistamine can cause polyphagia, sedation, increased vocalization, and vomiting in cats?
Responda
-
Cyproheptadine
-
Trimeprazine
-
Chlorpheniramine
-
Diphenhydramine
Questão 145
Questão
True or false: antihistamines can cause hyperexcitability and convulsions at high doses
Questão 146
Questão
Which is false regarding cromolyn sodium?
Responda
-
It inhibits the release of histamine from mast cells
-
It closes Cl- channels
-
It’s used for nasal allergies in horses
-
It’s used for conjunctivitis
Questão 147
Questão
True or false: serotonin is derived from tryptophan
Questão 148
Questão
Which of the following serotonin receptors is mismatched with their mechanism?
Responda
-
5-HT1—Gi
-
5-HT3—Gs
-
5-HT5—Gi
-
5-HT4--Gs
-
5-HT2—Gq
-
5-HT6—Gs
-
5-HT7—Gs
Questão 149
Questão
Which of the following is false regarding the triphasic response to rapid IV injection of serotonin?
Responda
-
The Bezold-Jarisch reflex involves an initial fall in systemic arterial pressure with accompanying reflex tachycardia
-
The second phase is a short period of a pressor effect
-
The third phase is a prolonged fall in systemic BP
-
All of the above are correct!
Questão 150
Questão
Which of the following is not caused by serotonin?
Responda
-
Contraction of smooth muscles
-
Increased GIT motility
-
Decreased pulmonary pressure
-
Relaxation of bronchiolar smooth muscle
Questão 151
Questão
Which of the following is not an SSRI?
Responda
-
Sertraline
-
Fluoxetine
-
Paroxetine
-
Fluvoxamine
-
Buspirone
Questão 152
Questão
Which of the following serotonin agonists would you use to control postpartum hemorrhage and for uterine involution? (Hint: it’s an agonist of the 5-HT2 receptor!)
Responda
-
Cisapride
-
Ergometrine
-
Metoclopramide
-
Cyproheptadine
Questão 153
Questão
Which drug is used for constipation and megacolon in cats? (But let’s be honest here, all I care about is its use for stasis in rabbits.)
Responda
-
Cisapride
-
Ergometrine
-
Metoclopramide
-
Cyproheptadine
Questão 154
Questão
Which drug is an agonist of the 5-HT4 receptor and a D2 antagonist that, while being useful for gastric stasis and anti-emesis, can also change your mood/behavior?
Responda
-
Cisapride
-
Ergometrine
-
Metoclopramide
-
Cyproheptadine
Questão 155
Questão
Which antagonist of the 5-HT1 receptor (and first gen antihistamine) is used for head shaking in horses and feline asthma?
Responda
-
Ketaserin
-
Cyproheptadine
-
Methysergide
-
Ondansetron
Questão 156
Questão
Which of the following is an antagonist of the 5-HT2 receptor and alpha adrenergic receptor, antihistamine, and is used for glaucoma?
Responda
-
Ketaserin
-
Cyproheptadine
-
Methysergide
-
Ondansetron
Questão 157
Questão
Which drug (that sounds like a transformer) is used as an antiemetic during chemotherapy?
Responda
-
Ketaserin
-
Cyproheptadine
-
Methysergide
-
Ondansetron
Questão 158
Questão
Which 5-HT2 antagonist is used for carcinoid syndrome (cancerous tissues producing too much serotonin)?
Responda
-
Ketaserin
-
Cyproheptadine
-
Methysergide
-
Ondansetron