ALI

Question 1

What is Acute limbischemia(ALI)?

Answer 1

is a vascular emergency in which the arterial blood supply to one or more extremities is critically reduced.

Question 2

What is responsible for the majority of cases of acute limb ischemia?

Answer 2

Arterialthrombosisandcardiac emboliare responsible for the majority of cases.

Question 3

What does limb hypoperfusion leads to?

Answer 3

Limb hypoperfusion leads to systemic acid base and electrolytes abnormalities that impair cardiopulmonary and renal function.

Question 4

What are the clinical features of acute limb ischemia?

Answer 4

Clinical features: “ 6 Ps”

• Pain: Restpainthat worsens on passive movement of the limb and is most severe in thedistalaspects of theischemiclimb.
• Pallor: Skin over theischemiclimb initially appears pale and then becomes mottled andpurple-blue.
• Paralysis: Initial muscle weakness progresses to profound irreversibleparalysis.
• Pulselessness: Absent peripheral pulsesdistalto the site of occlusion.
• Paresthesia: Initialparesthesia(e.g., decreased fine touch sensation) progresses to anesthesia.
• Poikolothermia: Theischemiclimb is typically cold to touch but may be warm in hot environments (i.e., it takes on the ambient temperature).

Question 5

What is used to categorize the limb?

Answer 5

Clinical findings in combination with Doppler studies are then used to categorize the limb as viable, threatened, or nonviable.