Basics 3 (Dressings and VAC) Flashcards

1
Q

Mechanism of VAC (5)

A
  • Prolifération cellulaire en réponse au stress mécanique des tissus
  • Macrostrain: rapprochement des berges par la pression négative
  • Microstrain: stimulation de l’angiogenèse et la croissance des tissus (via pression négative qui entraine microdéformations cellulaire
  • Diminue le load bactérien
  • Élimine l’excès de liquide interstitiel et les toxines
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2
Q

Contraindications to VAC

A

Exposed vessels, nerves and organs
Malignancy
Untreated OM
Unexplored fistula
Fresh anastomotic site
Necrotic/eschar tissue

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3
Q

Complications of VAC

A

Edge erythema, maceration, ulceration
Mechanical malfunction
Retained sponge
Bleeding
Infection

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4
Q

Nommer 4 classes d’agents antimicrobien topique

A

Savons
Halogénure oxydant (Dakin, iode)
Acide acétique
Ions d’argents

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5
Q

Mécanisme d’action des ions d’argent

A

Se lie aux protéines et enzymes et endommage leur ADN

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6
Q

Pansements actifs contre le pseudo (5)

A

Acide acétique
Silver sulfadiazine
Sulfamylon
Mupurocin
Dakin (sodium hypochloride)

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7
Q

What ingredient is in Acticoat making it a good dressing

A

Nanocrystalline silver

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8
Q

What type of organisms to silver based dressings useful against

A

gram +
gram -
fungi
some viruses

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9
Q

Name 3 biological dressings

A
  • Cadaveric allograft
  • Xenograft
  • Amnion
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10
Q

Which dressing should you avoid in a potential face transplant candidate

A

Allograft

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11
Q

Couverture antimicrobienne de la bacitracine + effet secondaire

A

gram +
Néphrotoxique

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12
Q

Couverture antimicrobienne du nitrate d’argent

A

staph species
aérobe gram - (donc pseudo)

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13
Q

Spectre antimicrobien du dakin (hypochlorite de sodium)

A

broad spectrum
*à utiliser en dilution 1/4 (concentration 0,025% pour effet bactéricide sans dommages aux fibroblastes et kératinocytes)

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14
Q

Spectre antimicrobien du polysporin

A

gram + et -

crée une résistance aux gram - à long terme

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15
Q

Quoi faire si fungus colonisé dans une brûlure?

A

Mélanger du nystatin à autre agent antimicrobien

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16
Q

Pourquoi ne pas utiliser la flamazine chez les nouveaux-nés

A

Risque de Kernictère

17
Q

Pourquoi la flamazine (silver sulfadiazine) rend l’évaluation des brûlures difficiles + 1 inconvénient

A
  • car crée un pseudo-eschar jaune-gris
  • inconvénient: retarde l’épithélisalisation

C-I chez les nouveaux-nés (risque Kernictère) et so allergie aux Sulfa