Characteristics of dye dispersion in all studies
| Correct plane | Brachial plexus staining | SSN staining | Phrenic staining | ||||||||||
| Vertical (mm) | Horizontal (mm) | Branches | Intensity | Pattern | Intensity | Length (mm) | Pattern | Intensity | Length (mm) | Pattern | Distance to stain (mm) | ||
| 1 left | No | – | – | – | – | – | – | – | – | – | – | – | |
| 1 right | Yes | 67 | 60 | ST, MT | 2, 2 | L, U | 3 | 29 | C | 1 | 25 | U | – |
| 2 left | Yes | 41 | 53 | ST, MT | 2, 2 | L, U | 2 | 17 | C | 0 | – | – | 16 |
| 2 right | Yes | 67 | 47 | ST | 2, 2 | L, U | 3 | 16 | C | 0 | – | – | 20 |
| 3 left | Yes | 50 | 50 | ST, MT | 3, 2 | L, U | 3 | 30 | C | 0 | – | – | 12 |
| 3 right | Yes | 60 | 50 | ST, MT | 2, 2 | L, U | 3 | 30 | C | 0 | – | – | 17 |
| 4 left | Yes | 40 | 34 | ST, MT | 3, 3 | L, U | 3 | 21 | C | 1 | 11 | U | – |
| 4 right | Yes | 50 | 60 | ST, MT | 1, 1 | L, U | 1 | 33 | C | 0 | – | – | 3 |
| 5 left | Yes | 34 | 27 | ST, MT, IT | 1, 2, 2 | LU, LU, LU | 3 | 19 | C | 0 | – | – | 20 |
| 5 right | Yes | 39 | 33 | ST, MT, IT | 1, 2, 2 | LU, C, C | 3 | 19 | C | 0 | – | – | 12 |
Four-point staining grade: 0=no staining; 1=weak staining; 2=moderate staining; 3=strong staining.
C, circumferential; IT, inferior trunk; L, lateral surface; MT, middle trunk; SSN, suprascapular nerve; ST, superior trunk; U, upper surface.