Table 1.
Mean and SD of Retinal Blood Flow after Various Cervical Arterial Ligations and the Unobstructed Paths to the Eye in Rats
| Combination Number | Vessels Ligated | N | Retinal Blood Flow (μL/min) | Unobstructed Paths to Eye | Unobstructed Paths Group | |
|---|---|---|---|---|---|---|
| Mean | SD | |||||
| 1 | CCAc, dICA | 3 | 8.5 | 1.9 | A, B, G, H, I | 1 |
| 2 | CCA, pPPA | 4 | 7.2 | 2.4 | C, D, F, G, H, I | 3 |
| 3 | dICA, pICA | 2 | 7.2 | 1.6 | B, C, D, G, H, I | 2 |
| 4 | pPPA | 10 | 6.6 | 2.9 | B, C, D, F, G, H, I | 2 |
| 5 | CCAc, pPPA | 4 | 5.3 | 1.8 | B, F, G, H, I | 2 |
| 6 | CCA | 3 | 4.8 | 0.0 | C, D, E, F, G, H, I | 3 |
| 7 | CCA, dICA | 2 | 4.3 | 0.5 | C, D, G, H, I | 3 |
| 8 | CCA, dICA, pPPA | 2 | 2.9 | 0.8 | C, D, G, H, I | 3 |
| 9 | CCA, dICA, ECA, pPPA | 4 | 2.8 | 0.5 | C, D, G, H, I | 3 |
| 10 | CCA, CCAc | 11* | 2.2 | 1.4 | E, F, G, H, I | 4 |
| 11 | dICA, ECA, pPPA | 2 | 1.8 | 1.4 | C, D, G, H, I | 3 |
| 12 | CCA, CCAc, dICA | 6 | 0.0 | 0.0 | G, H, I | 5 |
| 13 | CCA, CCAc, pPPA | 3 | 0.0 | 0.0 | F, G, H, I | 5 |
Column 1 contains the Combination Number (Combination is the abbreviation for [combination of cervical arterial ligations]) that was assigned after arranging the rows in descending order according to the values for Mean Retinal Blood Flow (RBF) in Column 4. The abbreviations in column 2 correspond to the blood vessels as shown in Figure 1. Column 3 indicates the number of runs. RBF was measured once, that is, there was one run, in a given eye for each of several Combinations. Thus, RBF values of runs obtained from an individual eye appear in several rows, but each row contains no more than one run from a given eye. Column 6 displays the RBF paths (according to Figure 2) that contain no ligated vessels and therefore can contribute to the blood supply of the eye. Column 7 presents the unobstructed paths group (Group) in which the Combination in the same row belongs. Combinations were consolidated retrospectively into Groups based on the capacity of the unobstructed paths (indicated in Column 6) to supply the eye according to Figure 2 after ligation of the cervical arteries. Group 1 consisted of any combination of unobstructed paths that included Path A. Group 2 included any combination of unobstructed paths containing Path B, but not A. Group 3 comprised any combination of unobstructed paths having Path C or D, but not Paths A or B. Group 4 included any combination of unobstructed paths with Path E, but not A, B, C or D. Group 5 contained any combination of unobstructed paths which excluded Paths A, B, C, D or E but included F, G, H or I.
indicates that 10 runs having ligation of CCA and CCAc (Combination 10) are included from Karamian et al.(Karamian et al., 2019) In 13 additional Combinations there was only one run. Since the value when there is only one run is a poor indicator of the true mean of a Combination, these values were not included in this Table. Thus, the total of runs in this Table is 56.