anaesthetic Flashcards

1
Q

what is the definition of anaesthetic?

A

loss of sensation. medicine that cause anaesthetia are called anesthetic

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2
Q

the moa of anesthetic .

A

stop the nerves from passing signals to the brain . this mean is do not feel anything

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3
Q

type of anaesthetic.

A
  • general anaesthetic
  • local anaesthetic
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4
Q

different between general and local anaesthetic.

A

general
- numb to whole body
- total unconscious
- no memory
- for major operation
- inject into vein or inhale gas

local
- numb at small part of body
- conscious but free from pain
- memory not affected
- for teeth removal , eye operation, c section , minor operation
- applied to topically or by injection

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5
Q

what to prepare before general anaesthetic?

A
  • fasting for 8 hours before surgery . this is because general anaesthetic will relax the muscles which can cause food from stomach to get into lungs
  • stop taking medication that may increase bleeding ( warfarin , aspirin )
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6
Q

what medication that need to take before surgery ?

A
  • H2 blocker to reduce gastric acidity
  • benzodiazepines to relieve anxiety and facilitate sleep
  • opioid for analgesic
  • antiemetic to prevent nausea
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7
Q

what is the stage of general anaesthetic?

A
  • stage 1 : induction
    stage from when you first take anesthetic until you go to sleep . you calm but able to talk for a while . you’re breathing is slow but regular and lose ability to feel pain .
  • stage 2 : excitement
    this stage can be dangerous due to uncontrolled movement, fast heartbeat and irregular breathing. to shorten this stage , give opioid or short acting BZD bfr administered anesthetic.
  • stage 3 : surgical anesthetic
    this stage , surgery can take place where eye stop moving and muscle completely relax
  • stage 4 : medullary paralysis
    occur due to overdose, severe respiratory depression and it’s rare but can be fatal
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8
Q

what is example of IV anesthetic drugs ?

A
  • propofol
  • thiopental sodium
  • etomidate
  • ketamine
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9
Q

what is example of inhaled anesthetic?

A
  • isoflurance and sevoflurance
  • desflurance
  • nitrous oxide
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10
Q

what is the side effect of general anaesthetic drugs ?

A
  • nausea and vomiting
  • feeling cold and shivering
  • confusion and memory loss
  • dizzines
  • sore throat
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11
Q

what is the complication that can occur ?

A
  • anesthetic awareness
  • breathing problem
  • nerve damage
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12
Q

what is example of local anaesthetic drugs ?

A
  • benzocaines
  • lidocaine
  • novocaine
  • tetracaine
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13
Q

what is formulation for local anesthetic?

A
  • creams
  • gels
  • injections
  • spray
  • ointment
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14
Q

how local anaesthetic works ?

A
  • nerve block
    inject to nerves supply at particular part of body such as hand , arm or leg
  • epidural
    inject given to area of lower back called epidural space to numb lower part of body for labor
  • spinal anesthetic
    inject given within spinal to numb lower part of body for c section
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15
Q

what is the side effect for local anesthetic?

A
  • some discomfort when injection
  • tingling sensation as medication wears off
  • possible minor bruising , bleeding or soreness
  • dizziness
  • headache
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16
Q

what is the side effect for local anesthetic?

A
  • some discomfort when injection
  • tingling sensation as medication wears off
  • possible minor bruising , bleeding or soreness
  • dizziness
  • headache