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101 Cards in this Set

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4 Reasons for using Pre-anesthetics?

-To calm or sedate.


-Reduce adverse effects of anesthesia.


-Reduce amt of anesthesia needed.


-To decrease pain,

2 Sections the Autonomic Nervous System is divided into?

Parasympathetic and sympathetic.

What does the Parasympathetic system do?

Rest and digest.

Synapse?

Space between nerve ending and receptor.

Neurotransmitter?

Chemical that is released from nerve ending and travels across synapse, stimulating receptor.

Parasympathetic responses?

Saliva & tears increase.


Pupils contract.


BP lowers.


Bronchi constrict.


Gastro increases.


VAGUS NERVE.

Parasympathetic Neurotransmitter?

Acetylcholine.

Sympathetic Neurotransmitter?

Norepinephrine.

Sympathetic responses?

Saliva and tear decrease.


Pupils dilate.


HR and BP increases.


Bronchi dilate.


Gastro decreases.


BLOOD GOES TO SKELETAL MUSCLE.

What controls the involuntary body functions?

Autonomic nervous system.

-ergic?

does the work of. Stimulates

-mimetic?

Mimics, has a similar effect.

-lytic?

Prevents, tears down the effect of.

What are Anticholinergics used for?

They treat parasympathetic responses produced by anesthesia drugs. Prevent hypersalivation. Prevent bradycardia.

Atropine class?

Anticholinergic.

Onset and duration of Atropine?

20mins SC onset. 10-15 min IM onset. Duration 60mins.

Precautions of Atropine?

Reduces tear secretion. Avoid using in animal with rapid heart rates. Produces thick secretions. Reduces GI activity. CROSSES PLACENTAL BARRIER.

Signs of Atropine overdose?

Tachycardia. Vasodilation. Dry MM. Hyperthermia. Excitement. Dilated pupils.

Glycopyrrolate class?

Anticholinergic.

Difference from Atropine and Glycopyyolate?

Glycopyrrolate last 2-3 hours and does not cross placental barrier.

Use of Sedatives and Tranquilizers?

Calming effect. Smooth induction. Reduce amount of anesthetics needed. Prevent excitatory.

Phenothiazine class?

Sedatives/ Tranquilizers.

Drugs in the Phenothiazines class?

Acepromazine.

Advantage of Acepromazine?

Not controlled. Lasts 2-8hours IV. Antiemetic. Antiarrythmic.

Precautions of Acepromazine?

Vasodilation- avoid in hypotensive patients.No analgesic. Lowers seizure threshold. 3rd eyelid prolapse. Antihistamine. Paraphimosis in horses.

Onset of Acepromazine?

15mins IM.

Benzodiazepines class?

Sedation/ Tranquilizers.

Drugs in Benzodiazepines class?

Diazepam.


Midazolam.


Zolazepam.


Alprazolam.


Flumazenil.

Advantages of Benzodiazepines?

Mild calming effect. Excellent muscle relaxation. Prevent seizures. Minimal cardiac and resp depression.

Precautions of Benzodiazepines?

May cause excitement when used alone.

Diazepam class, and traits?

Benzodiazepam. Often mixed with Ketamine. Poorly absorbed IM.

Another name for Diazepam?

Valium.

Another name for Midazolam?

Versed

Trait of Midazolam?

Water soluble.

Class of Midazolam?

Benzodiazepines/ Sedation.

Class of Zolazepam?

Benzodiazepines/ Sedative.

Traits of Zolazepam?

Combined with Tiletamine. Comes as powder. 2 weeks shelf life. IM

Another name for Alprazolam?

Xanax

Class of Alprazolam?

Benzodiazepines/ Sedative.

Traits of Alprazolam?

Oral used for anxiety.

Class of Flumazenil?

Benzodiazepine/ sedative.

Traits of Flumazenil?

Antagonist-reversal agent for diazepam and midazolam.

Advantages of Alpha-2 Agonists?

Potent sedative.


Good muscle relaxation.


Analgesic.


Reversible.


Not controlled.

What are the Classes of Pre-Anesthetics?

Anticholinergics.


Sedatives/Tranq.


----


Phenothiazines.


Benzodiazepines.


---


Alpha-2 Agonist.


Opiods.


Pure agonists.


Mixed ant/agonists.


Partial agonist.


Pure agonist.

Precautions of Alpha-2 Agonists?

Can have Cardiovasular effects. 2nd degree AV block. Causes vasocontriction. Use with Atropine. Absorbed skin and MM. Analgesic wears off before sedation. Possible bloat.

What Class of drugs cause Emesis in 50% of dogs and 90% of cats?

Alpha-2 Agonists.

Contraindications of Alpha-2 Agonists?

Pedoatric, geriatric. Cardio or resp disease. Diabetes. Gastro obstructions.

Drugs in Alpha-2 Agonist class?

Medetomidine.


Dexmeditomidine.


Xylazine.

Another name for Xylazine?

Rompun.

Traits of Xylazine?

Analgesic for 20mins.


IM or IV.


Sedation up to several hours.


Can have more side effects.

Reversing agent of Xylazine?

Yohimbine. IV.

Another name for Medetomidine?

Domitor.

Another name for Dexmeditomidine?

Dexdomitor.

Dexmeditomidine traits?

IV or IM.


Has a ceiling effect on analgesic.

Reversing agent of Dexmeditomine?

Atipamezole. IM

Another name for Atipamezole?

Antisedan.

Use of Opiods?

Analgesic. Common preanesthetic.

Neuroleptanalgesic?

Opiods mixed with Tranq.

Advantages of Opiods?

Most effective analgesic.


Potent sedation.


Reversible.

Disadvantages of Opiods?

Bradycardia.


Resp depression.


Excitatory in cats and horses.


Can cause histamine release if IV.


GI clearing effect.

Precautions of Opiods?

Used with Tranq in cats and horses. IV with caution in dogs. Avoid in cats.

Actions of Opiods?

Mimic effects of endorphins on brain and spinal cord receptors.

What are the 4 Opiods Receptors?

Mu.


Kappa.


Delta.


Nociceptin.



Mu Opiod Receptor?

Profound analgesic, euporia, resp depression, physical dependence, bradycardia, GI clearing.

Kappa Opiod Receptor?

Lesser analgesic response, miosis, sedation, dysphoria.

Delta Opiod Receptor?

Modulates mu receptor activity, GI motility, cardiovascular regulation.

Nociceptin Opiod Receptor?

Plays a role with endogenous opiods. Non-opiods branch of receptors.

Define Pure Agonists?

Stimulates all 4 receptors.

Define Mixed agonist/ antagonists?

Stimulates some types and blocks others.

Define Partial Agonists?

Binds at one or more receptors, has effect at only one type of receptor.

Define Pure Antagonists?

Blocks all types of receptors.

Signs of Opiod overdose?

Profound resp depression.


Bradycardia.


Extreme sedation/ excitement.


Pinpoint pupils in dogs and Dilated in cats.


Face swelling.

Define Miosis?

Pinpoint eyes.

Define Mydriasis?

Dilated pupils.

List of Pure Agonists?

Morphine.


Oxymorphone.


Hydromorphone.


Fentanyl.


Tramadol.


Meperidine.

List of Mixed Agonists/ Antagonists?

Butorphanol.


Nalbuphine.

List of Partial Agonists?

Buprenorphine.

List of Antagonists?

Nalorphine.


Naloxone.

Morphine Class?

Agonists, Opiod.

Traits of Morphine?

Natural opiate.


Lasts 4 hours.


Vomit and defecation may occur.


Safe for liver disease patients.


Strongest natural analgesic.


IV dogs only.

Oxymorphone Class?

Agonist, Opiods.

Oxymorphone Traits?

Epidural availible.


Longer duration.


More potent sedation and analgesic.


Fewer side effects. Cats only

Hydromorphone Class?

Agonist, Opiods.

Hydromorphone Traits?

Dogs and cats.


More effective analgesic for cats.


No histamine.


Less potent than oxymorphone.


Side effects are panting, vomiting, bradycardia.

Fentanyl Class?

Agonist, Opiods.

Fentanyl Traits?

Transdermal patch lasts for 3 days.


Post-op patch takes 12-24hrs to reach analgesic.

Tramadol Class?

Agonists, Opiods.

Tramadol Traits?

Controlled drug. Anti-anxiety properties. Post-op pain.

Meperidine Class?

Agonist, Opiod.

Meperidine Traits?

Wide safety margin. Weak agonist.

Butorphanol Class?

Mixed agonists/ antagonist, Opiods.

Butorphanol Traits?

Minimal sedation.


1 hr mild Analgesic.


High safety index.


Kappa agonist, Mu antagonist.

Another name for Butorphanol?

Torbugesic- IM,SC Analgesic.


Torbutrol- Oral Cough suppressant.

Nalbuphine Class?

Mixed Agonists/ Antagonist, Opiods.

Nalbuphine Traits?

Can be used in place of butorphanol.

Buprenorphine Class?

Partial Agonists, Opiods.

Buprenorphine Traits?

Transmucosal for cats. High affinity for Mu receptors. Delayed onset. Duration of 6-12hrs. Ceiling effect with Analgesic.

Nalorphine Class?

Antagonist, Opiods.

Nalorphine Traits?

90% antagonistic.

Naloxone Class?

Antagonists, Opiods.

Naloxone Traits?

100% antagonistic.