Respiratory tract surgery (Yr4) Flashcards

1
Q

what are contraindications for draining the thorax?

A

if patient isn’t stable
ongoing haemothorax
clinically insignificant volumes

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2
Q

what is atelectasis?

A

lung collapse

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3
Q

how will lung sounds change if you have a pleural effusion?

A

they will be decreased ventrally but increased dorsally depending on where the fluid line is

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4
Q

what are the two methods of draining the thoracic cavity?

A

needle thoracocentesis (one off drainage/sample)
trocar thoracostomy tube or small bore multi-fenestrated thoracotomy (repeat drainage)

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5
Q

where is the needle placed for needle thoracocentesis?

A

7th-9th intercostal space (dorsal third if air, ventral third if fluid, mid third if combination)

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6
Q

on which side of the rib should you place the butterfly needle for needle thoracocentesis?

A

cranial aspect (avoid the vessels/nerves)

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7
Q

what equipment is required for needle thoracocentesis?

A

aseptic preparation and local
butterfly needle
3 way tap
syringes
EDTA tube (cytology) and plain tube (culture)

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8
Q

where do the intercostal arteries, veins and nerves run in relation to the ribs?

A

on caudal aspect (always place needles on cranial aspect)

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9
Q

where is a thoracostomy tube placed?

A

7th or 8th rib space (on cranial border of rib)

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10
Q

how long should a thoracostomy tube be?

A

run from 2nd rib to 7th/8th/9th rib

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11
Q

where should the skin be incised for trocar-type chest drains?

A

10th/11th intercostal space to then tunnel cranially and enter though 7th/8th intercostal space

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12
Q

what should be done post-placement of a thoracostomy tube?

A

x-ray to check position
analgesia, body vest, elizabethan collar, monitor respiratory rate/effort and insertion site

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13
Q

when would it be appropriate to remove a thoracostomy tube?

A

when draining <2ml/kg/day fluid
when draining no air
(based on patient status and disease process)

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14
Q

when is a temporary tracheostomy tube indicated?

A

for life-threatening upper airway obstruction (BOAS, laryngeal paralysis, laryngeal foreign body, neoplasia)

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15
Q

how is a permanent tracheostomy done?

A

suture tracheal mucosa for the skin

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16
Q

when is a permanent tracheostomy indicated?

A

salvage procedure for unresolved upper airway obstruction

17
Q

what dogs are predisposed to tracheal collapse?

A

middle aged small/toy breeds

18
Q

what is the typical clinical sign of tracheal collapse?

A

goose-honk cough (along with others such as exercise intolerance and cyanosis)

19
Q

what are the grades of tracheal collapse?

A
  1. laxity of dorsal tracheal membranes causing 25% luminal collapse
  2. loss of cartilage rigidity and further laxity causing 50% luminal collapse
  3. flattening of cartilage rings causing 75% collapse
  4. 100% loss of luminal integrity
20
Q

how can tracheal collapse be managed medically?

A

corticosteroids
anti-tussives
bronchodilators
antimicrobials
weight loss
harness (not collar)

21
Q

what is the surgical treatment for tracheal collapse?

A

extraluminal prosthetic tracheal ring placement
intraluminal stenting