Monitoring Flashcards

1
Q

Give 3 reasons why we monitor patients during anaesthesia

A
  1. Preventing the patient from responding to the surgery (e.g. pain)
  2. To detect abnormalities before they turn into major complications
  3. To maintain tissue perfusion and oxygenation => improve patient outcome
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2
Q

What 3 undesirable changes can anaesthetic drugs cause

A

Cardiac depression
Respiration depression
Decreased homeostasis

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3
Q

What organ is severely affected by decreased tissue perfusion

A

Kidney

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4
Q

Name 4 causes of compromised blood flow

A

Decreased BP
Reduced HR
Haemorrhaging
Anaemia

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5
Q

Name 5 causes of decreased oxygen in a patient

A

Reduced RR
Low HR
Pulmonary disease
Equipment failure
Obese patient on its back - too much pressure of diaphragm

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6
Q

Which area of the brain do we not want to suppress functions of during anaesthesia

A

Hindbrain

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7
Q

Which 3 “hypos” do we want to avoid during anaesthesia

A

Hypotension
Hypothermia
Hypoventilation

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8
Q

Name 4 ways we can establish the depth of anaesthesia

A

Jaw tone
Eye position
Palpebral reflex
Capnography

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9
Q

Which drug causes eye position to be an unhelpful tool of assessing depth of anaesthesia and why

A

Ketamine
Increases muscle tone so eye position often doesn’t change

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10
Q

Name 2 methods of monitoring temperature of an animal

A

Rectal temperature
Oesophageal temperature probe

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11
Q

Give 3 ways to monitor the cardiovascular system

A

HR and rhythm
MM colour and CRT
Bleeding from the surgical site

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12
Q

Why is it good to listen to the heart whilst palpating a pulse at the same time

A

Can help you to detect any deficits
e.g. pulse rate is less than the HR, peripheral pulse has an irregular rhythm

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13
Q

What does capillary refill time allow you to assess

A

Peripheral perfusion and oxygenation

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14
Q

What do very pink/red mucous membranes suggest

A

Sepsis
Anaesthetic drugs
Low MAP (mean arterial pressure)

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15
Q

What do very pales pink/white mucous membranes suggest

A

Anaemia
Inadequate blood flow
Alpha 2 agonists

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16
Q

What is cyanosis, what does it suggest and what animal is it normal in

A

Bluish/purple discolouration of the MM or skin
Suggests low O2 saturation and severe hypoxia
Chow chow this is normal

17
Q

Name 2 methods of monitoring blood pressure

A

Doppler
Oscillometer

18
Q

How to choose a correctly sized cuff

A

The width of the cuff should be 40% of the circumference of the limb

19
Q

What measurement does a doppler tell us in dogs and cats

A

Dogs = systolic BP
Cats = Mean arterial pressure

20
Q

What does pulse oximetry tell use

A

Sp02 =% of haemoglobin that is saturated with oxygen (healthy patient should be >95%
Detects hypoxaemia

21
Q

What are the limitations of pulse oximetry

A

A patient may not be hypoxaemic (pulse ox reading less < 95%) but may still be hypoxic, e.g. poor circulation.

22
Q

How to assess amount of blood lost from surgical site

A

1ml of blood = 1g

23
Q

Aside from respiratory rate, what else is important to consider when monitoring the respiratory system

A

Respiratory rhythm and effort

24
Q

What does capnography allow us to assess in regards to respiratory system monitoring

A

Measures inhaled and exhaled CO2

25
Q

What 3 things does capnography tell us about the patient

A

Tissue metabolism
Perfusion
Ventilation

26
Q

What is the normal ETCO2 range for dogs and cats

A

Dogs = 35-40 mmHg
Cats = 28-45 mmHg

27
Q

What does blood gas analysis allow us to measure

A

PaCO2 (partial pressure of carbon dioxide in the blood)
PaO2 (partial pressure of oxygen in the blood)
Blood pH
Electrolytes
Lactate

28
Q

How many % of damage does a kidney have to sustain for it to show on blood work

A

65-70% damage