title: Use of hand-held Doppler to identify difficult forearm veins for cannulation.
mesh_terms: D002406:Catheterization, Peripheral / Q000009:adverse effects*; D005542:Forearm / Q000098:blood supply*; D006801:Humans; D006435:Renal Dialysis; D013927:Thrombosis / Q000209:etiology*; D018608:Ultrasonography, Doppler; D018084:Ultrasonography, Interventional