Chief complaint

Prolonged Pallor of the Hand

Hand Ischemia Following Radial Artery Puncture or Cannulation

🎬Video coming Sept 2026
Allen Test
aka Modified Allen test
Rule in:VHInadequate Hand Collateral Circulation (Incomplete Palmar Arch), IEHand Ischemia Following Radial Artery Puncture or Cannulation, IERadial or Ulnar Arterial Occlusion (E.g., Thromboangiitis Obliterans, Post-cannulation Occlusion)
Rule out:SHInadequate Hand Collateral Circulation (Incomplete Palmar Arch), IEHand Ischemia Following Radial Artery Puncture or Cannulation, IERadial or Ulnar Arterial Occlusion (E.g., Thromboangiitis Obliterans, Post-cannulation Occlusion)

Inadequate Hand Collateral Circulation (Incomplete Palmar Arch)

🎬Video coming Sept 2026
Allen Test
aka Modified Allen test
Rule in:VHInadequate Hand Collateral Circulation (Incomplete Palmar Arch), IEHand Ischemia Following Radial Artery Puncture or Cannulation, IERadial or Ulnar Arterial Occlusion (E.g., Thromboangiitis Obliterans, Post-cannulation Occlusion)
Rule out:SHInadequate Hand Collateral Circulation (Incomplete Palmar Arch), IEHand Ischemia Following Radial Artery Puncture or Cannulation, IERadial or Ulnar Arterial Occlusion (E.g., Thromboangiitis Obliterans, Post-cannulation Occlusion)

Radial or Ulnar Arterial Occlusion (E.g., Thromboangiitis Obliterans, Post-cannulation Occlusion)

🎬Video coming Sept 2026
Allen Test
aka Modified Allen test
Rule in:VHInadequate Hand Collateral Circulation (Incomplete Palmar Arch), IEHand Ischemia Following Radial Artery Puncture or Cannulation, IERadial or Ulnar Arterial Occlusion (E.g., Thromboangiitis Obliterans, Post-cannulation Occlusion)
Rule out:SHInadequate Hand Collateral Circulation (Incomplete Palmar Arch), IEHand Ischemia Following Radial Artery Puncture or Cannulation, IERadial or Ulnar Arterial Occlusion (E.g., Thromboangiitis Obliterans, Post-cannulation Occlusion)